diff --git a/.github/workflows/typescript.yml b/.github/workflows/typescript.yml
index 2df0f42c..daecccb7 100644
--- a/.github/workflows/typescript.yml
+++ b/.github/workflows/typescript.yml
@@ -16,7 +16,7 @@ jobs:
 
     - uses: actions/setup-node@v3
       with:
-        node-version: 16
+        node-version: 18
         cache: 'npm'
         cache-dependency-path: js/package-lock.json
 
diff --git a/.gitignore b/.gitignore
index 74f458c1..85002940 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ test-ledger/
 result
 .direnv
 .blacklist
+logs
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95f59ec8..d49ce64f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,13 +2,24 @@ Race Protocol: A multi-chain infrastructure for asymmetric competitive games
 
 # Master(Unreleased)
 
+## Breaking Changes
+- Facade: Argument format updated. Now it receives `-g` for game, and `-b` for bundle.
+
+### Replace addr with id in games
+- Now we use `id: u64` instead of `addr: string` in games. The value of `id` is taken from the `access_version` which is incremental and unique in game. This update helps us to improve the performance and reduce the sizes of checkpoints and states.
+- API: `Effect::count_players` and `Effect::count_servers` has been removed, use `Effect::count_nodes` to count how many nodes are involved in the randomization.
+- SDK: `AppClient.getProfiles` now receives both `addr: string` and `id: bigint`.
+- TestKit: Add `TestClient::join`.
+
 ## Enhancements
 - SDK: Remove dependency `crypto` to support NodeJS runtime.
 - CLI: Print `checkpoint` in hex format in command `game-info`.
+- TestKit: Add `handle_dispatch_until_no_events` to TestHandler.
 
 ## Features
 - CLI: Update `publish` command. Now it receives the path to the WASM bundle instead of the Arweave URL to solana metadata.
 - Add optional `createProfileIfNeeded` to join options.
+- SDK: Add `recipientClaim` and its solana implementation.
 
 ## Fixes
 - Transactor: Improve the retry mechanism for settle.
diff --git a/Cargo.lock b/Cargo.lock
index c3bbfed1..8b80e687 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -29,25 +29,14 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "aead"
-version = "0.4.3"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b613b8e1e3cf911a086f53f03bf286f52fd7a7258e4fa606f0ef220d39d8877"
+checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
 dependencies = [
+ "crypto-common",
  "generic-array",
 ]
 
-[[package]]
-name = "aes"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e8b47f52ea9bae42228d07ec09eb676433d7c4ed1ebdf0f1d1c29ed446f1ab8"
-dependencies = [
- "cfg-if",
- "cipher 0.3.0",
- "cpufeatures",
- "opaque-debug",
-]
-
 [[package]]
 name = "aes"
 version = "0.8.2"
@@ -55,19 +44,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "433cfd6710c9986c576a25ca913c39d66a6474107b406f34f91d4a8923395241"
 dependencies = [
  "cfg-if",
- "cipher 0.4.4",
+ "cipher",
  "cpufeatures",
 ]
 
 [[package]]
 name = "aes-gcm-siv"
-version = "0.10.3"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589c637f0e68c877bbd59a4599bbe849cac8e5f3e4b5a3ebae8f528cd218dcdc"
+checksum = "ae0784134ba9375416d469ec31e7c5f9fa94405049cf08c5ce5b4698be673e0d"
 dependencies = [
  "aead",
- "aes 0.7.5",
- "cipher 0.3.0",
+ "aes",
+ "cipher",
  "ctr",
  "polyval",
  "subtle",
@@ -85,6 +74,18 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "ahash"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.20"
@@ -118,6 +119,12 @@ dependencies = [
  "alloc-no-stdlib",
 ]
 
+[[package]]
+name = "android-tzdata"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -127,15 +134,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "ansi_term"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "anstream"
 version = "0.3.1"
@@ -187,15 +185,15 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.71"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c7d0618f0e0b7e8ff11427422b64564d5fb0be1940354bfe2e0529b18a9d9b8"
+checksum = "b3d1d046238990b9cf5bcde22a3fb3584ee5cf65fb2765f454ed428c7a0063da"
 
 [[package]]
 name = "ark-bn254"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea691771ebbb28aea556c044e2e5c5227398d840cee0c34d4d20fa8eb2689e8c"
+checksum = "a22f4561524cd949590d78d7d4c5df8f592430d221f7f3c9497bbafd8972120f"
 dependencies = [
  "ark-ec",
  "ark-ff",
@@ -204,95 +202,121 @@ dependencies = [
 
 [[package]]
 name = "ark-ec"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dea978406c4b1ca13c2db2373b05cc55429c3575b8b21f1b9ee859aa5b03dd42"
+checksum = "defd9a439d56ac24968cca0571f598a61bc8c55f71d50a89cda591cb750670ba"
 dependencies = [
  "ark-ff",
+ "ark-poly",
  "ark-serialize",
  "ark-std",
  "derivative",
+ "hashbrown 0.13.2",
+ "itertools 0.10.5",
  "num-traits",
  "zeroize",
 ]
 
 [[package]]
 name = "ark-ff"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b3235cc41ee7a12aaaf2c575a2ad7b46713a8a50bda2fc3b003a04845c05dd6"
+checksum = "ec847af850f44ad29048935519032c33da8aa03340876d351dfab5660d2966ba"
 dependencies = [
  "ark-ff-asm",
  "ark-ff-macros",
  "ark-serialize",
  "ark-std",
  "derivative",
- "num-bigint 0.4.3",
+ "digest 0.10.7",
+ "itertools 0.10.5",
+ "num-bigint 0.4.6",
  "num-traits",
  "paste",
- "rustc_version 0.3.3",
+ "rustc_version",
  "zeroize",
 ]
 
 [[package]]
 name = "ark-ff-asm"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db02d390bf6643fb404d3d22d31aee1c4bc4459600aef9113833d17e786c6e44"
+checksum = "3ed4aa4fe255d0bc6d79373f7e31d2ea147bcf486cba1be5ba7ea85abdb92348"
 dependencies = [
- "quote 1.0.26",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "ark-ff-macros"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db2fd794a08ccb318058009eefdf15bcaaaaf6f8161eb3345f907222bac38b20"
+checksum = "7abe79b0e4288889c4574159ab790824d0033b9fdcb2a112a3182fac2e514565"
 dependencies = [
- "num-bigint 0.4.3",
+ "num-bigint 0.4.6",
  "num-traits",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "ark-poly"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d320bfc44ee185d899ccbadfa8bc31aab923ce1558716e1997a1e74057fe86bf"
+dependencies = [
+ "ark-ff",
+ "ark-serialize",
+ "ark-std",
+ "derivative",
+ "hashbrown 0.13.2",
+]
+
 [[package]]
 name = "ark-serialize"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d6c2b318ee6e10f8c2853e73a83adc0ccb88995aa978d8a3408d492ab2ee671"
+checksum = "adb7b85a02b83d2f22f89bd5cac66c9c89474240cb6207cb1efc16d098e822a5"
 dependencies = [
+ "ark-serialize-derive",
  "ark-std",
- "digest 0.9.0",
+ "digest 0.10.7",
+ "num-bigint 0.4.6",
 ]
 
 [[package]]
-name = "ark-std"
-version = "0.3.0"
+name = "ark-serialize-derive"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1df2c09229cbc5a028b1d70e00fdb2acee28b1055dfb5ca73eea49c5a25c4e7c"
+checksum = "ae3281bc6d0fd7e549af32b52511e1302185bd688fd3359fa36423346ff682ea"
 dependencies = [
- "num-traits",
- "rand 0.8.5",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
 ]
 
 [[package]]
-name = "array-bytes"
-version = "1.4.1"
+name = "ark-std"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ad284aeb45c13f2fb4f084de4a420ebf447423bdf9386c0540ce33cb3ef4b8c"
+checksum = "94893f1e0c6eeab764ade8dc4c0db24caf4fe7cbbaafc0eba0a9030f447b5185"
+dependencies = [
+ "num-traits",
+ "rand 0.8.5",
+]
 
 [[package]]
 name = "arrayref"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b4930d2cb77ce62f89ee5d5289b4ac049559b1c45539271f5ed4fdc7db34545"
+checksum = "9d151e35f61089500b617991b791fc8bfd237ae50cd5950803758a179b41e67a"
 
 [[package]]
 name = "arrayvec"
-version = "0.7.2"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
 [[package]]
 name = "ascii"
@@ -300,45 +324,6 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eab1c04a571841102f5345a8fc0f6bb3d31c315dec879b5c6e42e40ce7ffa34e"
 
-[[package]]
-name = "asn1-rs"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f6fd5ddaf0351dff5b8da21b2fb4ff8e08ddd02857f0bf69c47639106c0fff0"
-dependencies = [
- "asn1-rs-derive",
- "asn1-rs-impl",
- "displaydoc",
- "nom",
- "num-traits",
- "rusticata-macros",
- "thiserror",
- "time 0.3.20",
-]
-
-[[package]]
-name = "asn1-rs-derive"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "726535892e8eae7e70657b4c8ea93d26b8553afb1ce617caee529ef96d7dee6c"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
- "synstructure",
-]
-
-[[package]]
-name = "asn1-rs-impl"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2777730b2039ac0f95f093556e61b6d26cebed5393ca6f152717777cec3a42ed"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "assert_matches"
 version = "1.5.0"
@@ -347,9 +332,9 @@ checksum = "9b34d609dfbaf33d6889b2b7106d3ca345eacad44200913df5ba02bfd31d2ba9"
 
 [[package]]
 name = "async-compression"
-version = "0.3.15"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "942c7cd7ae39e91bde4820d74132e9862e62c2f386c3aa90ccf55949f5bad63a"
+checksum = "cd066d0b4ef8ecb03a55319dc13aa6910616d0f44008a045bb1835af830abff5"
 dependencies = [
  "brotli",
  "flate2",
@@ -357,6 +342,8 @@ dependencies = [
  "memchr",
  "pin-project-lite",
  "tokio",
+ "zstd 0.13.0",
+ "zstd-safe 7.0.0",
 ]
 
 [[package]]
@@ -368,15 +355,6 @@ dependencies = [
  "event-listener",
 ]
 
-[[package]]
-name = "async-mutex"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "479db852db25d9dbf6204e6cb6253698f175c15726470f78af0d918e99d6156e"
-dependencies = [
- "event-listener",
-]
-
 [[package]]
 name = "async-stream"
 version = "0.3.5"
@@ -394,31 +372,20 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "async-trait"
-version = "0.1.68"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
-]
-
-[[package]]
-name = "atty"
-version = "0.2.14"
+version = "0.1.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+checksum = "a27b8a3a6e1a44fa4c8baf1f653e4172e81486d4941f2237e20dc2d0cf4ddff1"
 dependencies = [
- "hermit-abi 0.1.19",
- "libc",
- "winapi",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -456,15 +423,15 @@ checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
 [[package]]
 name = "base64"
-version = "0.21.0"
+version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4a4ddaa51a5bc52a6948f74c06d20aaaddb71924eab79b8c97a8c556e942d6a"
+checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
 [[package]]
-name = "base64ct"
-version = "1.1.1"
+name = "base64"
+version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6b4d9b1225d28d360ec6a231d65af1fd99a2a095154c8040689617290569c5c"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
 [[package]]
 name = "beef"
@@ -491,26 +458,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
-name = "bitmaps"
-version = "2.1.0"
+name = "bitflags"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "031043d04099746d8db04daf1fa424b2bc8bd69d92b25962dcde24da39ab64a2"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 dependencies = [
- "typenum",
+ "serde",
 ]
 
 [[package]]
 name = "blake3"
-version = "1.3.3"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42ae2468a89544a466886840aa467a25b766499f4f04bf7d9fcd10ecee9fccef"
+checksum = "30cca6d3674597c30ddf2c587bf8d9d65c9a84d2326d941cc79c9842dfe0ef52"
 dependencies = [
  "arrayref",
  "arrayvec",
  "cc",
  "cfg-if",
  "constant_time_eq",
- "digest 0.10.6",
+ "digest 0.10.7",
 ]
 
 [[package]]
@@ -540,54 +507,78 @@ checksum = "8d696c370c750c948ada61c69a0ee2cbbb9c50b1019ddb86d9317157a99c2cae"
 
 [[package]]
 name = "borsh"
-version = "0.9.3"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4114279215a005bc675e386011e594e1d9b800918cea18fcadadcce864a2046b"
+dependencies = [
+ "borsh-derive 0.10.3",
+ "hashbrown 0.13.2",
+]
+
+[[package]]
+name = "borsh"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15bf3650200d8bffa99015595e10f1fbd17de07abbc25bb067da79e769939bfa"
+checksum = "a6362ed55def622cddc70a4746a68554d7b687713770de539e59a739b249f8ed"
 dependencies = [
- "borsh-derive",
- "hashbrown 0.11.2",
+ "borsh-derive 1.5.1",
+ "cfg_aliases",
 ]
 
 [[package]]
 name = "borsh-derive"
-version = "0.9.3"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6441c552f230375d18e3cc377677914d2ca2b0d36e52129fe15450a2dce46775"
+checksum = "0754613691538d51f329cce9af41d7b7ca150bc973056f1156611489475f54f7"
 dependencies = [
  "borsh-derive-internal",
  "borsh-schema-derive-internal",
  "proc-macro-crate 0.1.5",
- "proc-macro2 1.0.56",
+ "proc-macro2",
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "borsh-derive"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3ef8005764f53cd4dca619f5bf64cafd4664dada50ece25e4d81de54c80cc0b"
+dependencies = [
+ "once_cell",
+ "proc-macro-crate 3.2.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
+ "syn_derive",
+]
+
 [[package]]
 name = "borsh-derive-internal"
-version = "0.9.3"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5449c28a7b352f2d1e592a8a28bf139bc71afb0764a14f3c02500935d8c44065"
+checksum = "afb438156919598d2c7bad7e1c0adf3d26ed3840dbc010db1a882a65583ca2fb"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "borsh-schema-derive-internal"
-version = "0.9.3"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdbd5696d8bfa21d53d9fe39a714a18538bad11492a42d066dbbc395fb1951c0"
+checksum = "634205cc43f74a1b9046ef87c4540ebda95696ec0f315024860cad7c5b0f5ccd"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "brotli"
-version = "3.3.4"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1a0b1dbcc8ae29329621f8d4f0d835787c1c38bb1401979b49d13b0b305ff68"
+checksum = "74f7971dbd9326d58187408ab83117d8ac1bb9c17b085fdacd1cf2f598719b6b"
 dependencies = [
  "alloc-no-stdlib",
  "alloc-stdlib",
@@ -596,9 +587,9 @@ dependencies = [
 
 [[package]]
 name = "brotli-decompressor"
-version = "2.3.4"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b6561fd3f895a11e8f72af2cb7d22e08366bebc2b6b57f7744c4bda27034744"
+checksum = "9a45bd2e4095a8b518033b128020dd4a55aab1c0a381ba4404a472630f4bc362"
 dependencies = [
  "alloc-no-stdlib",
  "alloc-stdlib",
@@ -606,9 +597,12 @@ dependencies = [
 
 [[package]]
 name = "bs58"
-version = "0.4.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "771fe0050b883fcc3ea2359b1a96bcfbc090b7116eae7c3c512c7a083fdf23d3"
+checksum = "bf88ba1141d185c399bee5288d850d63b8369520c1eafc32a0430b5b6c287bf4"
+dependencies = [
+ "tinyvec",
+]
 
 [[package]]
 name = "bstr"
@@ -653,61 +647,52 @@ version = "0.6.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e31225543cb46f81a7e224762764f4a6a0f097b1db0b175f69e8065efaa42de5"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "bytemuck"
-version = "1.13.1"
+version = "1.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17febce684fd15d89027105661fec94afb475cb995fbc59d2865198446ba2eea"
+checksum = "773d90827bc3feecfb67fab12e24de0749aad83c74b9504ecde46237b5cd24e2"
 dependencies = [
  "bytemuck_derive",
 ]
 
 [[package]]
 name = "bytemuck_derive"
-version = "1.4.1"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdde5c9cd29ebd706ce1b35600920a33550e402fc998a2e53ad3b42c3c47a192"
+checksum = "0cc8b54b395f2fcfbb3d90c47b01c7f444d94d05bdeb775811dec868ac3bbc26"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "byteorder"
-version = "1.4.3"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
-
-[[package]]
-name = "caps"
-version = "0.5.5"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "190baaad529bcfbde9e1a19022c42781bdb6ff9de25721abdb8fd98c0807730b"
-dependencies = [
- "libc",
- "thiserror",
-]
+checksum = "8318a53db07bb3f8dca91a600466bdb3f2eaadeedfdbcf02e1accbad9271ba50"
 
 [[package]]
 name = "cc"
-version = "1.0.83"
+version = "1.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
+checksum = "812acba72f0a070b003d3697490d2b55b837230ae7c6c6497f05cc2ddbb8d938"
 dependencies = [
  "jobserver",
  "libc",
+ "shlex",
 ]
 
 [[package]]
@@ -727,6 +712,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "chacha20"
 version = "0.9.1"
@@ -734,33 +725,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3613f74bd2eac03dad61bd53dbe620703d4371614fe0bc3b9f04dd36fe4e818"
 dependencies = [
  "cfg-if",
- "cipher 0.4.4",
+ "cipher",
  "cpufeatures",
 ]
 
 [[package]]
 name = "chrono"
-version = "0.4.24"
+version = "0.4.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e3c5919066adf22df73762e50cffcde3a758f2a848b113b586d1f86728b673b"
+checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
 dependencies = [
+ "android-tzdata",
  "iana-time-zone",
  "js-sys",
- "num-integer",
  "num-traits",
  "serde",
- "time 0.1.45",
  "wasm-bindgen",
- "winapi",
-]
-
-[[package]]
-name = "cipher"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ee52072ec15386f770805afd189a01c8841be8696bed250fa2f13c4c0d6dfb7"
-dependencies = [
- "generic-array",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -773,37 +754,6 @@ dependencies = [
  "inout",
 ]
 
-[[package]]
-name = "clap"
-version = "2.34.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
-dependencies = [
- "ansi_term",
- "atty",
- "bitflags",
- "strsim 0.8.0",
- "textwrap 0.11.0",
- "unicode-width",
- "vec_map",
-]
-
-[[package]]
-name = "clap"
-version = "3.2.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ea181bf566f71cb9a5d17a59e1871af638180a18fb0035c92ae62b705207123"
-dependencies = [
- "atty",
- "bitflags",
- "clap_lex 0.2.4",
- "indexmap",
- "once_cell",
- "strsim 0.10.0",
- "termcolor",
- "textwrap 0.16.0",
-]
-
 [[package]]
 name = "clap"
 version = "4.2.5"
@@ -823,9 +773,9 @@ checksum = "0fdc5d93c358224b4d6867ef1356d740de2303e9892edc06c5340daeccd96bab"
 dependencies = [
  "anstream",
  "anstyle",
- "bitflags",
- "clap_lex 0.4.1",
- "strsim 0.10.0",
+ "bitflags 1.3.2",
+ "clap_lex",
+ "strsim",
 ]
 
 [[package]]
@@ -835,18 +785,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9644cd56d6b87dbe899ef8b053e331c0637664e9e21a33dfcdc36093f5c5c4"
 dependencies = [
  "heck",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
-]
-
-[[package]]
-name = "clap_lex"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"
-dependencies = [
- "os_str_bytes",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -886,15 +827,15 @@ dependencies = [
 
 [[package]]
 name = "console"
-version = "0.15.5"
+version = "0.15.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d79fbe8970a77e3e34151cc13d3b3e248aa0faaecb9f6091fa07ebefe5ad60"
+checksum = "0e1f83fc076bd6dd27517eacdf25fef6c4dfe5f1d7448bafaaf3a26f13b5e4eb"
 dependencies = [
  "encode_unicode 0.3.6",
  "lazy_static",
  "libc",
  "unicode-width",
- "windows-sys 0.42.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -917,23 +858,11 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "const-oid"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e4c78c047431fee22c1a7bb92e00ad095a02a983affe4d8a72e2a2c62c1b94f3"
-
-[[package]]
-name = "const-oid"
-version = "0.9.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "520fbf3c07483f94e3e3ca9d0cfd913d7718ef2483d2cfd91c0d9e91474ab913"
-
 [[package]]
 name = "constant_time_eq"
-version = "0.2.5"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13418e745008f7349ec7e449155f419a61b92b58a99cc3616942b926825ec76b"
+checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
 
 [[package]]
 name = "core-foundation"
@@ -1027,7 +956,7 @@ dependencies = [
  "cranelift-entity",
  "fxhash",
  "hashbrown 0.12.3",
- "indexmap",
+ "indexmap 1.9.3",
  "log",
  "smallvec",
 ]
@@ -1067,11 +996,10 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.8"
+version = "0.5.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a33c2bf77f2df06183c3aa30d1e96c0695a313d4f9c453cc3762a6db39f99200"
+checksum = "33480d6946193aa8033910124896ca395333cae7e2d1113d1fef6c3272217df2"
 dependencies = [
- "cfg-if",
  "crossbeam-utils",
 ]
 
@@ -1101,12 +1029,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.15"
+version = "0.8.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c063cd8cc95f5c377ed0d4b49a4b21f632396ff690e8470c29b3359b346984b"
-dependencies = [
- "cfg-if",
-]
+checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
 
 [[package]]
 name = "crunchy"
@@ -1121,6 +1046,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
 dependencies = [
  "generic-array",
+ "rand_core 0.6.4",
  "typenum",
 ]
 
@@ -1157,11 +1083,11 @@ dependencies = [
 
 [[package]]
 name = "ctr"
-version = "0.8.0"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "049bb91fb4aaf0e3c7efa6cd5ef877dbbbd15b39dad06d9948de4ec8a75761ea"
+checksum = "0369ee1ad671834580515889b80f2ea915f23b8be8d0daa4bbaf2ac5c7590835"
 dependencies = [
- "cipher 0.3.0",
+ "cipher",
 ]
 
 [[package]]
@@ -1199,10 +1125,10 @@ dependencies = [
  "cc",
  "codespan-reporting",
  "once_cell",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "scratch",
- "syn 2.0.15",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -1217,9 +1143,9 @@ version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2345488264226bf682893e25de0769f3360aac9957980ec49361b083ddaa5bc5"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -1250,8 +1176,8 @@ checksum = "109c1ca6e6b7f82cc233a97004ea8ed7ca123a9af07a8230878fcfda9b158bf0"
 dependencies = [
  "fnv",
  "ident_case",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -1263,10 +1189,10 @@ checksum = "2ea05d2fcb27b53f7a98faddaf5f2914760330ab7703adfc9df13332b42189f9"
 dependencies = [
  "fnv",
  "ident_case",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "strsim 0.10.0",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -1276,7 +1202,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4aab4dbc9f7611d8b55048a3a16d2d010c2c8334e46304b40ac1cc14bf3b48e"
 dependencies = [
  "darling_core 0.14.4",
- "quote 1.0.26",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -1287,18 +1213,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7bfb82b62b1b8a2a9808fb4caf844ede819a76cfc23b2827d7f94eefb49551eb"
 dependencies = [
  "darling_core 0.20.0",
- "quote 1.0.26",
- "syn 2.0.15",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "dashmap"
-version = "5.4.0"
+version = "5.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "907076dfda823b0b36d2a1bb5f90c96660a5bbcd7729e10727f07858f22c4edc"
+checksum = "978747c1d849a7d2ee5e8adc0159961c48fb7e5db2f06af6723b80123bb53856"
 dependencies = [
  "cfg-if",
- "hashbrown 0.12.3",
+ "hashbrown 0.14.5",
  "lock_api",
  "once_cell",
  "parking_lot_core",
@@ -1306,32 +1232,9 @@ dependencies = [
 
 [[package]]
 name = "data-encoding"
-version = "2.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23d8666cb01533c39dde32bcbab8e227b4ed6679b2c925eba05feabea39508fb"
-
-[[package]]
-name = "der"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6919815d73839e7ad218de758883aae3a257ba6759ce7a9992501efbb53d705c"
-dependencies = [
- "const-oid 0.7.1",
-]
-
-[[package]]
-name = "der-parser"
-version = "8.2.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbd676fbbab537128ef0278adb5576cf363cff6aa22a7b24effe97347cfab61e"
-dependencies = [
- "asn1-rs",
- "displaydoc",
- "nom",
- "num-bigint 0.4.3",
- "num-traits",
- "rusticata-macros",
-]
+checksum = "e8566979429cf69b49a5c740c60791108e86440e8be149bbea4fe54d2c32d6e2"
 
 [[package]]
 name = "derivation-path"
@@ -1345,23 +1248,11 @@ version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
-[[package]]
-name = "dialoguer"
-version = "0.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59c6f2989294b9a498d3ad5491a79c6deb604617378e1cdc4bfc1c1361fe2f87"
-dependencies = [
- "console",
- "shell-words",
- "tempfile",
- "zeroize",
-]
-
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -1373,12 +1264,11 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.10.6"
+version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer 0.10.4",
- "const-oid 0.9.2",
  "crypto-common",
  "subtle",
 ]
@@ -1424,40 +1314,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "displaydoc"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bf95dc3f046b9da4f2d51833c0d3547d8564ef6910f5c1ed130306a75b92886"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "dlopen"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71e80ad39f814a9abe68583cd50a2d45c8a67561c3361ab8da240587dda80937"
-dependencies = [
- "dlopen_derive",
- "lazy_static",
- "libc",
- "winapi",
-]
-
-[[package]]
-name = "dlopen_derive"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f236d9e1b1fbd81cea0f9cbdc8dcc7e8ebcd80e6659cd7cb2ad5f6c05946c581"
-dependencies = [
- "libc",
- "quote 0.6.13",
- "syn 0.15.44",
-]
-
 [[package]]
 name = "eager"
 version = "0.1.0"
@@ -1496,7 +1352,7 @@ dependencies = [
  "derivation-path",
  "ed25519-dalek",
  "hmac 0.12.1",
- "sha2 0.10.6",
+ "sha2 0.10.8",
 ]
 
 [[package]]
@@ -1537,11 +1393,11 @@ dependencies = [
 
 [[package]]
 name = "enum-iterator"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "706d9e7cf1c7664859d79cd524e4e53ea2b67ea03c98cc2870c5e539695d597e"
+checksum = "9fd242f399be1da0a5354aa462d57b4ab2b4ee0683cc552f7c007d2d12d36e94"
 dependencies = [
- "enum-iterator-derive 1.2.0",
+ "enum-iterator-derive 1.4.0",
 ]
 
 [[package]]
@@ -1550,32 +1406,20 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c134c37760b27a871ba422106eedbb8247da973a09e82558bf26d619c882b159"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "enum-iterator-derive"
-version = "1.2.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "355f93763ef7b0ae1c43c4d8eccc9d5848d84ad1a1d8ce61c421d1ac85a19d05"
+checksum = "a1ab991c1362ac86c61ab6f556cff143daa22e5a15e4e189df818b2fd19fe65b"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "enum_dispatch"
-version = "0.3.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11f36e95862220b211a6e2aa5eca09b4fa391b13cd52ceb8035a24bf65a79de2"
-dependencies = [
- "once_cell",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -1594,23 +1438,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "03e7b551eba279bf0fa88b83a46330168c1560a52a94f5126f892f0b364ab3e0"
 dependencies = [
  "darling 0.14.4",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
-name = "env_logger"
-version = "0.9.3"
+name = "equivalent"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a12e6657c4c97ebab115a42dcee77225f7f482cdd841cf7088c657a42e9e00e7"
-dependencies = [
- "atty",
- "humantime",
- "log",
- "regex",
- "termcolor",
-]
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
 [[package]]
 name = "errno"
@@ -1645,6 +1482,18 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4443176a9f2c162692bd3d352d745ef9413eec5782a80d8fd6f8a1ac692a07f7"
 
+[[package]]
+name = "fallible-iterator"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2acce4a10f12dc2fb14a218589d4f1f62ef011b2d0cc4b3cb1bba8e94da14649"
+
+[[package]]
+name = "fallible-streaming-iterator"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
+
 [[package]]
 name = "fastrand"
 version = "1.9.0"
@@ -1693,18 +1542,18 @@ checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
 [[package]]
 name = "form_urlencoded"
-version = "1.1.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9c384f161156f5260c24a097c56119f9be8c798586aecc13afbcbe7b7e26bf8"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
 dependencies = [
  "percent-encoding",
 ]
 
 [[package]]
 name = "futures"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
+checksum = "645c6916888f6cb6350d2550b80fb63e734897a8498abe35cfb732b6487804b0"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1717,9 +1566,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "955518d47e09b25bbebc7a18df10b81f0c766eaf4c4f1cccef2fca5f2a4fb5f2"
+checksum = "eac8f7d7865dcb88bd4373ab671c8cf4508703796caa2b1985a9ca867b3fcb78"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -1727,15 +1576,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
+checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+checksum = "a576fc72ae164fca6b9db127eaa9a9dda0d61316034f33a0a0d4eda41f02b01d"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -1744,32 +1593,32 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
+checksum = "a44623e20b9681a318efdd71c299b6b222ed6f231972bfe2f224ebad6311f0c1"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
+checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f43be4fe21a13b9781a69afa4985b0f6ee0e1afab2c6f454a8cf30e2b2237b6e"
+checksum = "9fb8e00e87438d937621c1c6269e53f536c14d3fbd6a042bb24879e57d474fb5"
 
 [[package]]
 name = "futures-task"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76d3d132be6c0e6aa1534069c705a74a5997a356c0dc2f86a47765e5617c5b65"
+checksum = "38d84fa142264698cdce1a9f9172cf383a0c82de1bddcf3092901442c4097004"
 
 [[package]]
 name = "futures-timer"
@@ -1783,9 +1632,9 @@ dependencies = [
 
 [[package]]
 name = "futures-util"
-version = "0.3.28"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26b01e40b772d54cf6c6d721c1d1abd0647a0106a12ecaa1c186273392a69533"
+checksum = "3d6401deb83407ab3da39eba7e33987a73c3df0c82b4bb5813ee871c19c41d48"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1861,8 +1710,8 @@ version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22030e2c5a68ec659fde1e949a745124b48e6fa8b045b7ed5bd1fe4ccc5c4e5d"
 dependencies = [
- "fallible-iterator",
- "indexmap",
+ "fallible-iterator 0.2.0",
+ "indexmap 1.9.3",
  "stable_deref_trait",
 ]
 
@@ -1953,7 +1802,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http",
- "indexmap",
+ "indexmap 1.9.3",
  "slab",
  "tokio",
  "tokio-util",
@@ -1971,55 +1820,55 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.11.2"
+version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 dependencies = [
- "ahash",
+ "ahash 0.7.6",
 ]
 
 [[package]]
 name = "hashbrown"
-version = "0.12.3"
+version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
 dependencies = [
- "ahash",
+ "ahash 0.8.11",
 ]
 
 [[package]]
-name = "hdrhistogram"
-version = "7.5.2"
+name = "hashbrown"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f19b9f54f7c7f55e31401bb647626ce0cf0f67b0004982ce815b3ee72a02aa8"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 dependencies = [
- "byteorder",
- "num-traits",
+ "ahash 0.8.11",
 ]
 
 [[package]]
-name = "heck"
-version = "0.4.1"
+name = "hashlink"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+checksum = "6ba4ff7128dee98c7dc9794b6a411377e1404dba1c97deb8d1a55297bd25d8af"
+dependencies = [
+ "hashbrown 0.14.5",
+]
 
 [[package]]
-name = "hermit-abi"
-version = "0.1.19"
+name = "hdrhistogram"
+version = "7.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+checksum = "7f19b9f54f7c7f55e31401bb647626ce0cf0f67b0004982ce815b3ee72a02aa8"
 dependencies = [
- "libc",
+ "byteorder",
+ "num-traits",
 ]
 
 [[package]]
-name = "hermit-abi"
-version = "0.2.6"
+name = "heck"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
-dependencies = [
- "libc",
-]
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
 [[package]]
 name = "hermit-abi"
@@ -2028,10 +1877,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
 
 [[package]]
-name = "histogram"
-version = "0.6.9"
+name = "hex"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12cb882ccb290b8646e554b157ab0b71e64e8d5bef775cd66b6531e52d302669"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
 name = "hmac"
@@ -2049,7 +1898,7 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
 dependencies = [
- "digest 0.10.6",
+ "digest 0.10.7",
 ]
 
 [[package]]
@@ -2087,9 +1936,9 @@ dependencies = [
 
 [[package]]
 name = "http-range-header"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bfe8eed0a9285ef776bb792479ea3834e8b94e13d615c2f66d03dd50a435a29"
+checksum = "add0ab9360ddbd88cfeb3bd9574a1d85cfdfa14db10b3e21d3700dbc4328758f"
 
 [[package]]
 name = "httparse"
@@ -2103,12 +1952,6 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
 
-[[package]]
-name = "humantime"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
-
 [[package]]
 name = "hyper"
 version = "0.14.26"
@@ -2135,10 +1978,11 @@ dependencies = [
 
 [[package]]
 name = "hyper-rustls"
-version = "0.23.2"
+version = "0.24.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1788965e61b367cd03a62950836d5cd41560c3577d90e40e0819373194d1661c"
+checksum = "ec3efd23720e2049821a693cbc7e65ea87c72f1c58ff2f9522ff332b1491e590"
 dependencies = [
+ "futures-util",
  "http",
  "hyper",
  "log",
@@ -2146,7 +1990,6 @@ dependencies = [
  "rustls-native-certs",
  "tokio",
  "tokio-rustls",
- "webpki-roots",
 ]
 
 [[package]]
@@ -2194,47 +2037,42 @@ checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
 [[package]]
 name = "idna"
-version = "0.3.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
 dependencies = [
  "unicode-bidi",
  "unicode-normalization",
 ]
 
 [[package]]
-name = "im"
-version = "15.1.0"
+name = "indexmap"
+version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0acd33ff0285af998aaf9b57342af478078f53492322fafc47450e09397e0e9"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
- "bitmaps",
- "rand_core 0.6.4",
- "rand_xoshiro",
- "rayon",
- "serde",
- "sized-chunks",
- "typenum",
- "version_check",
+ "autocfg",
+ "hashbrown 0.12.3",
 ]
 
 [[package]]
 name = "indexmap"
-version = "1.9.3"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+checksum = "68b900aa2f7301e21c36462b170ee99994de34dff39a4a6a528e80e7376d07e5"
 dependencies = [
- "autocfg",
- "hashbrown 0.12.3",
+ "equivalent",
+ "hashbrown 0.14.5",
 ]
 
 [[package]]
 name = "indicatif"
-version = "0.17.3"
+version = "0.17.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cef509aa9bc73864d6756f0d34d35504af3cf0844373afe9b8669a5b8005a729"
+checksum = "763a5a8f45087d6bcea4222e7b72c291a054edf80e4ef6efd2a4979878c7bea3"
 dependencies = [
  "console",
+ "instant",
  "number_prefix",
  "portable-atomic",
  "unicode-width",
@@ -2273,7 +2111,7 @@ version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c66c74d2ae7e79a5a8f7ac924adbe38ee42a859c6539ad869eb51f0b52dc220"
 dependencies = [
- "hermit-abi 0.3.1",
+ "hermit-abi",
  "libc",
  "windows-sys 0.48.0",
 ]
@@ -2286,11 +2124,12 @@ checksum = "12b6ee2129af8d4fb011108c73d99a1b83a85977f23b82460c0ae2e25bb4b57f"
 
 [[package]]
 name = "iri-string"
-version = "0.4.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f0f7638c1e223529f1bfdc48c8b133b9e0b434094d1d28473161ee48b235f78"
+checksum = "7f5f6c2df22c009ac44f6f1499308e7a3ac7ba42cd2378475cc691510e1eef1b"
 dependencies = [
- "nom",
+ "memchr",
+ "serde",
 ]
 
 [[package]]
@@ -2299,7 +2138,7 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adcf93614601c8129ddf72e2d5633df827ba6551541c6d8c59520a371475be1f"
 dependencies = [
- "hermit-abi 0.3.1",
+ "hermit-abi",
  "io-lifetimes",
  "rustix",
  "windows-sys 0.48.0",
@@ -2314,6 +2153,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.6"
@@ -2322,18 +2170,18 @@ checksum = "453ad9f582a441959e5f0d088b02ce04cfe8d51a8eaf077f12ac6d3e94164ca6"
 
 [[package]]
 name = "jobserver"
-version = "0.1.26"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "936cfd212a0155903bcbc060e316fb6cc7cbf2e1907329391ebadc1fe0ce77c2"
+checksum = "48d1dbcbbeb6a7fec7e059840aa538bd62aaccf972c7346c4d9d2059312853d0"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "js-sys"
-version = "0.3.61"
+version = "0.3.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "445dde2150c55e483f3d8416706b97ec8e8237c307e5b7b4b8dd15e6af2a0730"
+checksum = "1868808506b929d7b0cfa8f75951347aa71bb21144b7791bae35d9bccfcfe37a"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -2355,9 +2203,9 @@ dependencies = [
 
 [[package]]
 name = "jsonrpsee"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d291e3a5818a2384645fd9756362e6d89cf0541b0b916fa7702ea4a9833608e"
+checksum = "8b971ce0f6cd1521ede485afc564b95b2c8e7079b9da41d4273bd9b55140a55d"
 dependencies = [
  "jsonrpsee-client-transport",
  "jsonrpsee-core",
@@ -2372,18 +2220,15 @@ dependencies = [
 
 [[package]]
 name = "jsonrpsee-client-transport"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "965de52763f2004bc91ac5bcec504192440f0b568a5d621c59d9dbd6f886c3fb"
+checksum = "7ca00d975eda834826b04ad57d4e690c67439bb51b02eb0f8b7e4c30fcef8ab9"
 dependencies = [
- "anyhow",
  "futures-channel",
- "futures-timer",
  "futures-util",
  "gloo-net",
  "http",
  "jsonrpsee-core",
- "jsonrpsee-types",
  "pin-project",
  "rustls-native-certs",
  "soketto",
@@ -2392,21 +2237,19 @@ dependencies = [
  "tokio-rustls",
  "tokio-util",
  "tracing",
- "webpki-roots",
+ "webpki-roots 0.23.1",
 ]
 
 [[package]]
 name = "jsonrpsee-core"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4e70b4439a751a5de7dd5ed55eacff78ebf4ffe0fc009cb1ebb11417f5b536b"
+checksum = "b83cca7a5a7899eed8b2935d5f755c8c4052ad66ab5b328bd34ac2b3ffd3515f"
 dependencies = [
  "anyhow",
- "arrayvec",
  "async-lock",
  "async-trait",
  "beef",
- "futures-channel",
  "futures-timer",
  "futures-util",
  "globset",
@@ -2420,51 +2263,50 @@ dependencies = [
  "soketto",
  "thiserror",
  "tokio",
+ "tokio-stream",
  "tracing",
  "wasm-bindgen-futures",
 ]
 
 [[package]]
 name = "jsonrpsee-http-client"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc345b0a43c6bc49b947ebeb936e886a419ee3d894421790c969cc56040542ad"
+checksum = "6483fea826f62260a88a132fa750a47b40d4218d41e3391936579533c6c67509"
 dependencies = [
  "async-trait",
  "hyper",
  "hyper-rustls",
  "jsonrpsee-core",
  "jsonrpsee-types",
- "rustc-hash",
  "serde",
  "serde_json",
  "thiserror",
  "tokio",
+ "tower",
  "tracing",
 ]
 
 [[package]]
 name = "jsonrpsee-proc-macros"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baa6da1e4199c10d7b1d0a6e5e8bd8e55f351163b6f4b3cbb044672a69bd4c1c"
+checksum = "d814a21d9a819f8de1a41b819a263ffd68e4bb5f043d936db1c49b54684bde0a"
 dependencies = [
  "heck",
  "proc-macro-crate 1.3.1",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "jsonrpsee-server"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fb69dad85df79527c019659a992498d03f8495390496da2f07e6c24c2b356fc"
+checksum = "4cf8b28bb9b0248d1ece5923c97355a4defc81c06b4b7a0097c61e412c716ca1"
 dependencies = [
- "futures-channel",
  "futures-util",
- "http",
  "hyper",
  "jsonrpsee-core",
  "jsonrpsee-types",
@@ -2480,9 +2322,9 @@ dependencies = [
 
 [[package]]
 name = "jsonrpsee-types"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd522fe1ce3702fd94812965d7bb7a3364b1c9aba743944c5a00529aae80f8c"
+checksum = "dd301ccc3e08718393432d1961539d78c4580dcca86014dfe6769c308b2c08b2"
 dependencies = [
  "anyhow",
  "beef",
@@ -2494,9 +2336,9 @@ dependencies = [
 
 [[package]]
 name = "jsonrpsee-wasm-client"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a77310456f43c6c89bcba1f6b2fc2a28300da7c341f320f5128f8c83cc63232d"
+checksum = "85dc3aea8bbb844dacc45cd98d01f624e4485184149a045761888c2e5fa5a0c6"
 dependencies = [
  "jsonrpsee-client-transport",
  "jsonrpsee-core",
@@ -2505,9 +2347,9 @@ dependencies = [
 
 [[package]]
 name = "jsonrpsee-ws-client"
-version = "0.16.2"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b83daeecfc6517cfe210df24e570fb06213533dfb990318fae781f4c7119dd9"
+checksum = "89a69852133d549b07cb37ff2d0ec540eae0d20abb75ae923f5d39bc7536d987"
 dependencies = [
  "http",
  "jsonrpsee-client-transport",
@@ -2517,9 +2359,9 @@ dependencies = [
 
 [[package]]
 name = "keccak"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3afef3b6eff9ce9d8ff9b3601125eec7f0c8cbac7abd14f355d053fa56c98768"
+checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
 dependencies = [
  "cpufeatures",
 ]
@@ -2538,19 +2380,9 @@ checksum = "884e2677b40cc8c339eaefcb701c32ef1fd2493d71118dc0ca4b6a736c93bd67"
 
 [[package]]
 name = "libc"
-version = "0.2.150"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
-
-[[package]]
-name = "libloading"
-version = "0.7.4"
+version = "0.2.158"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b67380fd3b2fbe7527a606e18729d21c6f3951633d0500574c4dc22d2d638b9f"
-dependencies = [
- "cfg-if",
- "winapi",
-]
+checksum = "d8adc4bb1803a324070e64a98ae98f38934d91957a99cfb3a43dcbc01bc56439"
 
 [[package]]
 name = "libsecp256k1"
@@ -2600,6 +2432,17 @@ dependencies = [
  "libsecp256k1-core",
 ]
 
+[[package]]
+name = "libsqlite3-sys"
+version = "0.30.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e99fb7a497b1e3339bc746195567ed8d3e24945ecd636e3619d20b9de9e9149"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "link-cplusplus"
 version = "1.0.8"
@@ -2617,9 +2460,9 @@ checksum = "b64f40e5e03e0d54f03845c8197d0291253cdbedfb1cb46b13c2c117554a9f4c"
 
 [[package]]
 name = "lock_api"
-version = "0.4.9"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
+checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
 dependencies = [
  "autocfg",
  "scopeguard",
@@ -2627,12 +2470,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.17"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
-dependencies = [
- "cfg-if",
-]
+checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
 [[package]]
 name = "mach"
@@ -2669,18 +2509,18 @@ dependencies = [
 
 [[package]]
 name = "memoffset"
-version = "0.6.5"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
+checksum = "d61c719bcfbcf5d62b3a09efa6088de8c54bc0bfcd3ea7ae39fcc186108b8de1"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
 name = "memoffset"
-version = "0.8.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d61c719bcfbcf5d62b3a09efa6088de8c54bc0bfcd3ea7ae39fcc186108b8de1"
+checksum = "488016bfae457b036d996092f6cb448677611ce4449e970ceaf42695203f218a"
 dependencies = [
  "autocfg",
 ]
@@ -2713,12 +2553,6 @@ dependencies = [
  "unicase",
 ]
 
-[[package]]
-name = "minimal-lexical"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
-
 [[package]]
 name = "miniz_oxide"
 version = "0.6.2"
@@ -2755,66 +2589,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7843ec2de400bcbc6a6328c958dc38e5359da6e93e72e37bc5246bf1ae776389"
 
-[[package]]
-name = "mpl-token-auth-rules"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24dcb2b0ec0e9246f6f035e0336ba3359c21f6928dfd90281999e2c8e8ab53eb"
-dependencies = [
- "borsh",
- "mpl-token-metadata-context-derive",
- "num-derive",
- "num-traits",
- "rmp-serde",
- "serde",
- "shank",
- "solana-program",
- "solana-zk-token-sdk",
- "thiserror",
-]
-
-[[package]]
-name = "mpl-token-metadata"
-version = "1.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "803d414222c1b648d14559d6d1aaa5fa6f7dfdde3a26c76c331a87d6124aeb5e"
-dependencies = [
- "arrayref",
- "borsh",
- "mpl-token-auth-rules",
- "mpl-token-metadata-context-derive",
- "mpl-utils",
- "num-derive",
- "num-traits",
- "shank",
- "solana-program",
- "spl-associated-token-account",
- "spl-token",
- "thiserror",
-]
-
-[[package]]
-name = "mpl-token-metadata-context-derive"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12989bc45715b0ee91944855130131479f9c772e198a910c3eb0ea327d5bffc3"
-dependencies = [
- "quote 1.0.26",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "mpl-utils"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "822133b6cba8f9a43e5e0e189813be63dd795858f54155c729833be472ffdb51"
-dependencies = [
- "arrayref",
- "borsh",
- "solana-program",
- "spl-token",
-]
-
 [[package]]
 name = "native-tls"
 version = "0.2.11"
@@ -2833,30 +2607,6 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "nix"
-version = "0.25.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f346ff70e7dbfd675fe90590b92d59ef2de15a8779ae305ebcbfd3f0caf59be4"
-dependencies = [
- "autocfg",
- "bitflags",
- "cfg-if",
- "libc",
- "memoffset 0.6.5",
- "pin-utils",
-]
-
-[[package]]
-name = "nom"
-version = "7.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
-dependencies = [
- "memchr",
- "minimal-lexical",
-]
-
 [[package]]
 name = "nu-ansi-term"
 version = "0.46.0"
@@ -2894,11 +2644,10 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.4.3"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f93ab6289c7b344a8a9f60f88d80aa20032336fe78da341afc91c8a2341fc75f"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
 dependencies = [
- "autocfg",
  "num-integer",
  "num-traits",
 ]
@@ -2915,30 +2664,29 @@ dependencies = [
 
 [[package]]
 name = "num-derive"
-version = "0.3.3"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "876a53fff98e03a936a674b29568b0e605f06b29372c2489ff4de23f1949743d"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "num-integer"
-version = "0.1.45"
+version = "0.1.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
 dependencies = [
- "autocfg",
  "num-traits",
 ]
 
 [[package]]
 name = "num-iter"
-version = "0.1.43"
+version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d03e6c028c5dc5cac6e2dec0efda81fc887605bb3d884578bb6d6bf7514e252"
+checksum = "d869c01cc0c455284163fd0092f1f93835385ccab5a98a0dcc497b2f8bf055a9"
 dependencies = [
  "autocfg",
  "num-integer",
@@ -2959,42 +2707,42 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.15"
+version = "0.2.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
 name = "num_cpus"
-version = "1.15.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
+checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
 dependencies = [
- "hermit-abi 0.2.6",
+ "hermit-abi",
  "libc",
 ]
 
 [[package]]
 name = "num_enum"
-version = "0.5.11"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f646caf906c20226733ed5b1374287eb97e3c2a5c227ce668c1f2ce20ae57c9"
+checksum = "4e613fc340b2220f734a8595782c551f1250e969d87d3be1ae0579e8d4065179"
 dependencies = [
  "num_enum_derive",
 ]
 
 [[package]]
 name = "num_enum_derive"
-version = "0.5.11"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcbff9bc912032c62bf65ef1d5aea88983b420f4f839db1e9b0c281a25c9c799"
+checksum = "af1844ef2428cc3e1cb900be36181049ef3d3193c63e43026cfe202983b27a56"
 dependencies = [
- "proc-macro-crate 1.3.1",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
+ "proc-macro-crate 3.2.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -3012,20 +2760,11 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "oid-registry"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9bedf36ffb6ba96c2eb7144ef6270557b52e54b20c0a8e1eb2ff99a6c6959bff"
-dependencies = [
- "asn1-rs",
-]
-
 [[package]]
 name = "once_cell"
-version = "1.17.1"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "opaque-debug"
@@ -3039,7 +2778,7 @@ version = "0.10.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "01b8574602df80f7b85fdfc5392fa884a4e3b3f4f35402c070ab34c3d3f78d56"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -3054,9 +2793,9 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -3077,12 +2816,6 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "os_str_bytes"
-version = "6.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ceedf44fb00f2d1984b0bc98102627ce622e083e49a5bacdb3e514fa4238e267"
-
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -3101,15 +2834,15 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.9.7"
+version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9069cbb9f99e3a5083476ccb29ceb1de18b9118cafa53e90c9551235de2b9521"
+checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall 0.2.16",
+ "redox_syscall 0.5.3",
  "smallvec",
- "windows-sys 0.45.0",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -3118,38 +2851,20 @@ version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f746c4065a8fa3fe23974dd82f15431cc8d40779821001404d10d2e79ca7d79"
 
-[[package]]
-name = "pbkdf2"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "216eaa586a190f0a738f2f918511eecfa90f13295abec0e457cdebcceda80cbd"
-dependencies = [
- "crypto-mac",
-]
-
 [[package]]
 name = "pbkdf2"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "83a0692ec44e4cf1ef28ca317f14f8f07da2d95ec3fa01f86e4467b725e60917"
 dependencies = [
- "digest 0.10.6",
-]
-
-[[package]]
-name = "pem"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8835c273a76a90455d7344889b0964598e3316e2a79ede8e36f16bdcf2228b8"
-dependencies = [
- "base64 0.13.1",
+ "digest 0.10.7",
 ]
 
 [[package]]
 name = "percent-encoding"
-version = "2.2.0"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "percentage"
@@ -3160,16 +2875,6 @@ dependencies = [
  "num",
 ]
 
-[[package]]
-name = "pest"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e68e84bfb01f0507134eac1e9b410a12ba379d064eab48c50ba4ce329a527b70"
-dependencies = [
- "thiserror",
- "ucd-trie",
-]
-
 [[package]]
 name = "pin-project"
 version = "1.0.12"
@@ -3185,16 +2890,16 @@ version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
 name = "pin-project-lite"
-version = "0.2.9"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
+checksum = "bda66fc9667c18cb2758a2ac84d1167245054bcf85d5d1aaa6923f45801bdd02"
 
 [[package]]
 name = "pin-utils"
@@ -3202,17 +2907,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
-[[package]]
-name = "pkcs8"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cabda3fb821068a9a4fab19a683eac3af12edf0f34b94a8be53c4972b8149d0"
-dependencies = [
- "der",
- "spki",
- "zeroize",
-]
-
 [[package]]
 name = "pkg-config"
 version = "0.3.26"
@@ -3227,9 +2921,9 @@ checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
 [[package]]
 name = "polyval"
-version = "0.5.3"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8419d2b623c7c0896ff2d5d96e2cb4ede590fed28fcc34934f4c33c036e620a1"
+checksum = "9d1fe60d06143b2430aa532c94cfe9e29783047f06c0d7fd359a9a51b729fa25"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -3239,9 +2933,9 @@ dependencies = [
 
 [[package]]
 name = "portable-atomic"
-version = "0.3.19"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26f6a7b87c2e435a3241addceeeff740ff8b7e76b74c13bf9acb17fa454ea00b"
+checksum = "da544ee218f0d287a911e9c99a39a8c9bc8fcad3cb8db5959940044ecfc67265"
 
 [[package]]
 name = "ppv-lite86"
@@ -3279,7 +2973,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f4c021e1093a56626774e81216a4ce732a735e5bad4868a03f3ed65ca0c3919"
 dependencies = [
  "once_cell",
- "toml_edit",
+ "toml_edit 0.19.8",
+]
+
+[[package]]
+name = "proc-macro-crate"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecf48c7ca261d60b74ab1a7b20da18bede46776b2e55535cb958eb595c5fa7b"
+dependencies = [
+ "toml_edit 0.22.20",
 ]
 
 [[package]]
@@ -3289,8 +2992,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
 dependencies = [
  "proc-macro-error-attr",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
  "version_check",
 ]
@@ -3301,27 +3004,18 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "version_check",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "0.4.30"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
 dependencies = [
- "unicode-xid 0.1.0",
-]
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.56"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
-dependencies = [
- "unicode-ident",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -3345,8 +3039,8 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "16b845dbfca988fa33db069c0e230574d15a3088f147a87b64c7589eb662c9ac"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -3359,72 +3053,13 @@ dependencies = [
  "percent-encoding",
 ]
 
-[[package]]
-name = "quinn"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "445cbfe2382fa023c4f2f3c7e1c95c03dcc1df2bf23cebcb2b13e1402c4394d1"
-dependencies = [
- "bytes",
- "pin-project-lite",
- "quinn-proto",
- "quinn-udp",
- "rustc-hash",
- "rustls",
- "thiserror",
- "tokio",
- "tracing",
- "webpki",
-]
-
-[[package]]
-name = "quinn-proto"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67c10f662eee9c94ddd7135043e544f3c82fa839a1e7b865911331961b53186c"
-dependencies = [
- "bytes",
- "rand 0.8.5",
- "ring",
- "rustc-hash",
- "rustls",
- "rustls-native-certs",
- "slab",
- "thiserror",
- "tinyvec",
- "tracing",
- "webpki",
-]
-
-[[package]]
-name = "quinn-udp"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "641538578b21f5e5c8ea733b736895576d0fe329bb883b937db6f4d163dbaaf4"
-dependencies = [
- "libc",
- "quinn-proto",
- "socket2",
- "tracing",
- "windows-sys 0.42.0",
-]
-
-[[package]]
-name = "quote"
-version = "0.6.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
-dependencies = [
- "proc-macro2 0.4.30",
-]
-
 [[package]]
 name = "quote"
-version = "1.0.26"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
- "proc-macro2 1.0.56",
+ "proc-macro2",
 ]
 
 [[package]]
@@ -3433,7 +3068,7 @@ version = "0.2.6"
 dependencies = [
  "anyhow",
  "async-trait",
- "borsh",
+ "borsh 1.5.1",
  "serde",
  "serde_json",
  "thiserror",
@@ -3444,8 +3079,8 @@ name = "race-cli"
 version = "0.2.6"
 dependencies = [
  "anyhow",
- "base64 0.21.0",
- "clap 4.2.5",
+ "base64 0.21.7",
+ "clap",
  "jsonrpsee",
  "prettytable-rs",
  "race-core",
@@ -3474,10 +3109,13 @@ version = "0.2.6"
 dependencies = [
  "anyhow",
  "async-trait",
- "borsh",
+ "borsh 1.5.1",
+ "futures",
  "race-api",
+ "rs_merkle",
  "serde",
  "serde_json",
+ "sha256",
  "thiserror",
 ]
 
@@ -3485,17 +3123,17 @@ dependencies = [
 name = "race-encryptor"
 version = "0.2.6"
 dependencies = [
- "aes 0.8.2",
+ "aes",
  "anyhow",
  "arrayref",
- "base64 0.21.0",
+ "base64 0.21.7",
  "chacha20",
  "chrono",
  "openssl",
  "race-api",
  "race-core",
  "rand 0.8.5",
- "sha1",
+ "sha2 0.10.8",
  "thiserror",
 ]
 
@@ -3515,7 +3153,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "arrayref",
- "borsh",
+ "borsh 1.5.1",
  "race-api",
  "race-proc-macro",
  "race-test",
@@ -3525,7 +3163,7 @@ dependencies = [
 name = "race-example-minimal"
 version = "0.1.0"
 dependencies = [
- "borsh",
+ "borsh 1.5.1",
  "race-api",
  "race-proc-macro",
  "race-test",
@@ -3535,17 +3173,7 @@ dependencies = [
 name = "race-example-raffle"
 version = "0.1.0"
 dependencies = [
- "borsh",
- "race-api",
- "race-proc-macro",
- "race-test",
-]
-
-[[package]]
-name = "race-example-simple-settle"
-version = "0.1.0"
-dependencies = [
- "borsh",
+ "borsh 1.5.1",
  "race-api",
  "race-proc-macro",
  "race-test",
@@ -3557,9 +3185,9 @@ version = "0.2.6"
 dependencies = [
  "anyhow",
  "async-trait",
- "base64 0.21.0",
- "borsh",
- "clap 4.2.5",
+ "base64 0.21.7",
+ "borsh 1.5.1",
+ "clap",
  "futures",
  "getrandom 0.2.11",
  "hyper",
@@ -3577,12 +3205,31 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "race-local-db"
+version = "0.2.6"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "borsh 1.5.1",
+ "race-api",
+ "race-core",
+ "race-env",
+ "race-transport",
+ "rusqlite",
+ "serde",
+ "serde_json",
+ "sha256",
+ "thiserror",
+ "tokio",
+]
+
 [[package]]
 name = "race-proc-macro"
 version = "0.2.6"
 dependencies = [
- "borsh",
- "quote 1.0.26",
+ "borsh 1.5.1",
+ "quote",
  "race-api",
  "syn 1.0.109",
 ]
@@ -3592,9 +3239,9 @@ name = "race-storage"
 version = "0.2.6"
 dependencies = [
  "anyhow",
- "base64 0.21.0",
- "borsh",
- "clap 4.2.5",
+ "base64 0.21.7",
+ "borsh 1.5.1",
+ "clap",
  "infer",
  "jsonrpsee",
  "openssl",
@@ -3617,9 +3264,11 @@ name = "race-test"
 version = "0.2.6"
 dependencies = [
  "anyhow",
+ "async-stream",
  "async-trait",
- "base64 0.21.0",
- "borsh",
+ "base64 0.21.7",
+ "borsh 1.5.1",
+ "futures",
  "project-root",
  "race-api",
  "race-client",
@@ -3639,9 +3288,9 @@ dependencies = [
  "arrayref",
  "async-stream",
  "async-trait",
- "base64 0.21.0",
- "borsh",
- "clap 4.2.5",
+ "base64 0.21.7",
+ "borsh 1.5.1",
+ "clap",
  "futures",
  "hyper",
  "jsonrpsee",
@@ -3651,16 +3300,19 @@ dependencies = [
  "race-core",
  "race-encryptor",
  "race-env",
+ "race-local-db",
  "race-test",
  "race-transport",
  "serde",
  "serde_json",
+ "sha256",
  "thiserror",
  "tokio",
  "tokio-stream",
  "tower",
  "tower-http",
  "tracing",
+ "tracing-appender",
  "tracing-subscriber",
  "uuid",
  "wasmer",
@@ -3671,10 +3323,11 @@ name = "race-transport"
 version = "0.2.6"
 dependencies = [
  "anyhow",
+ "async-stream",
  "async-trait",
- "borsh",
+ "borsh 1.5.1",
+ "futures",
  "jsonrpsee",
- "mpl-token-metadata",
  "project-root",
  "race-api",
  "race-core",
@@ -3683,9 +3336,12 @@ dependencies = [
  "serde",
  "serde_json",
  "shellexpand",
- "solana-client",
+ "solana-account-decoder",
+ "solana-pubsub-client",
+ "solana-rpc-client",
+ "solana-rpc-client-api",
  "solana-sdk",
- "spl-associated-token-account",
+ "spl-associated-token-account 5.0.0",
  "spl-token",
  "thiserror",
  "tokio",
@@ -3763,20 +3419,11 @@ dependencies = [
  "rand_core 0.5.1",
 ]
 
-[[package]]
-name = "rand_xoshiro"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f97cdb2a36ed4183de61b2f824cc45c9f1037f28afe0a322e9fff4c108b5aaa"
-dependencies = [
- "rand_core 0.6.4",
-]
-
 [[package]]
 name = "rayon"
-version = "1.7.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d2df5196e37bcc87abebc0053e20787d73847bb33134a69841207dd0a47f03b"
+checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
 dependencies = [
  "either",
  "rayon-core",
@@ -3784,44 +3431,39 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.11.0"
+version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b8f95bd6966f5c87776639160a66bd8ab9895d9d4ab01ddba9fc60661aebe8d"
+checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
 dependencies = [
- "crossbeam-channel",
  "crossbeam-deque",
  "crossbeam-utils",
- "num_cpus",
 ]
 
 [[package]]
-name = "rcgen"
-version = "0.10.0"
+name = "redox_syscall"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffbe84efe2f38dea12e9bfc1f65377fdf03e53a18cb3b995faedf7934c7e785b"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
- "pem",
- "ring",
- "time 0.3.20",
- "yasna",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.16"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
 name = "redox_syscall"
-version = "0.3.5"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
+checksum = "2a908a6e00f1fdd0dfd9c0eb08ce85126f6d8bbda50017e74bc4a4b7d4a926a4"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 ]
 
 [[package]]
@@ -3885,7 +3527,7 @@ version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "76e189c2369884dce920945e2ddf79b3dff49e071a167dd1817fa9c4c00d512e"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "libc",
  "mach",
  "winapi",
@@ -3902,12 +3544,12 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.17"
+version = "0.11.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13293b639a097af28fc8a90f22add145a9c954e49d77da06263d58cf44d5fb91"
+checksum = "dd67538700a17451e7cba03ac727fb961abb7607553461627b97de0b89cf4a62"
 dependencies = [
  "async-compression",
- "base64 0.21.0",
+ "base64 0.21.7",
  "bytes",
  "encoding_rs",
  "futures-core",
@@ -3922,6 +3564,7 @@ dependencies = [
  "js-sys",
  "log",
  "mime",
+ "mime_guess",
  "native-tls",
  "once_cell",
  "percent-encoding",
@@ -3931,6 +3574,8 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
+ "sync_wrapper",
+ "system-configuration",
  "tokio",
  "tokio-native-tls",
  "tokio-rustls",
@@ -3940,10 +3585,25 @@ dependencies = [
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "webpki-roots",
+ "webpki-roots 0.25.4",
  "winreg",
 ]
 
+[[package]]
+name = "reqwest-middleware"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a735987236a8e238bf0296c7e351b999c188ccc11477f311b82b55c93984216"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "http",
+ "reqwest",
+ "serde",
+ "task-local-extensions",
+ "thiserror",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -3953,12 +3613,27 @@ dependencies = [
  "cc",
  "libc",
  "once_cell",
- "spin",
- "untrusted",
+ "spin 0.5.2",
+ "untrusted 0.7.1",
  "web-sys",
  "winapi",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.11",
+ "libc",
+ "spin 0.9.8",
+ "untrusted 0.9.0",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rkyv"
 version = "0.7.41"
@@ -3967,7 +3642,7 @@ checksum = "21499ed91807f07ae081880aabb2ccc0235e9d88011867d984525e9a4c3cfa3e"
 dependencies = [
  "bytecheck",
  "hashbrown 0.12.3",
- "indexmap",
+ "indexmap 1.9.3",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -3980,52 +3655,32 @@ version = "0.7.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac1c672430eb41556291981f45ca900a0239ad007242d1cb4b4167af842db666"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
 [[package]]
-name = "rmp"
-version = "0.8.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44519172358fd6d58656c86ab8e7fbc9e1490c3e8f14d35ed78ca0dd07403c9f"
-dependencies = [
- "byteorder",
- "num-traits",
- "paste",
-]
-
-[[package]]
-name = "rmp-serde"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5b13be192e0220b8afb7222aa5813cb62cc269ebb5cac346ca6487681d2913e"
-dependencies = [
- "byteorder",
- "rmp",
- "serde",
-]
-
-[[package]]
-name = "rpassword"
-version = "7.2.0"
+name = "rs_merkle"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6678cf63ab3491898c0d021b493c94c9b221d91295294a2a5746eacbe5928322"
+checksum = "3b241d2e59b74ef9e98d94c78c47623d04c8392abaf82014dfd372a16041128f"
 dependencies = [
- "libc",
- "rtoolbox",
- "winapi",
+ "sha2 0.10.8",
 ]
 
 [[package]]
-name = "rtoolbox"
-version = "0.0.1"
+name = "rusqlite"
+version = "0.32.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "034e22c514f5c0cb8a10ff341b9b048b5ceb21591f31c8f44c43b960f9b3524a"
+checksum = "7753b721174eb8ff87a9a0e799e2d7bc3749323e773db92e0984debb00019d6e"
 dependencies = [
- "libc",
- "winapi",
+ "bitflags 2.6.0",
+ "fallible-iterator 0.3.0",
+ "fallible-streaming-iterator",
+ "hashlink",
+ "libsqlite3-sys",
+ "smallvec",
 ]
 
 [[package]]
@@ -4040,31 +3695,13 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "rustc_version"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
-dependencies = [
- "semver 0.11.0",
-]
-
 [[package]]
 name = "rustc_version"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
 dependencies = [
- "semver 1.0.17",
-]
-
-[[package]]
-name = "rusticata-macros"
-version = "4.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "faf0c4a6ece9950b9abdb62b1cfcf2a68b3b67a10ba445b3bb85be2a293d0632"
-dependencies = [
- "nom",
+ "semver",
 ]
 
 [[package]]
@@ -4073,7 +3710,7 @@ version = "0.37.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8bbfc1d1c7c40c01715f47d71444744a81669ca84e8b63e25a55e169b1f86433"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno",
  "io-lifetimes",
  "libc",
@@ -4083,14 +3720,14 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.20.8"
+version = "0.21.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fff78fc74d175294f4e83b28343315ffcfb114b156f0185e9741cb5570f50e2f"
+checksum = "3f56a14d1f48b391359b22f731fd4bd7e43c97f3c50eee276f3aa09c94784d3e"
 dependencies = [
  "log",
- "ring",
+ "ring 0.17.8",
+ "rustls-webpki 0.101.7",
  "sct",
- "webpki",
 ]
 
 [[package]]
@@ -4111,14 +3748,34 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d194b56d58803a43635bdc398cd17e383d6f71f9182b9a192c127ca42494a59b"
 dependencies = [
- "base64 0.21.0",
+ "base64 0.21.7",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.100.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f6a5fc258f1c1276dfe3016516945546e2d5383911efc0fc4f1cdc5df3a4ae3"
+dependencies = [
+ "ring 0.16.20",
+ "untrusted 0.7.1",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.101.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
+dependencies = [
+ "ring 0.17.8",
+ "untrusted 0.9.0",
 ]
 
 [[package]]
 name = "rustversion"
-version = "1.0.12"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f3208ce4d8448b3f3e7d168a73f5e0c43a61e32930de3bceeccedb388b6bf06"
+checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "ryu"
@@ -4162,8 +3819,8 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bdbda6ac5cd1321e724fa9cee216f3a61885889b896f073b8f82322789c5250e"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -4173,8 +3830,8 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d53dcdb7c9f8158937a7981b48accfd39a43af418591a5d008c7b22b5e1b7ca4"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
 ]
 
 [[package]]
@@ -4189,7 +3846,7 @@ version = "2.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a332be01508d814fed64bf28f798a146d73792121129962fdf335bb3c49a4254"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "core-foundation",
  "core-foundation-sys",
  "libc",
@@ -4208,27 +3865,9 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
-dependencies = [
- "semver-parser",
-]
-
-[[package]]
-name = "semver"
-version = "1.0.17"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bebd363326d05ec3e2f532ab7660680f3b02130d780c299bca73469d521bc0ed"
-
-[[package]]
-name = "semver-parser"
-version = "0.10.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00b0bef5b7f9e0df16536d3961cfb6e84331c065b4066afb39768d0e319411f7"
-dependencies = [
- "pest",
-]
+checksum = "61697e0a1c7e512e84a621326239844a24d8207b4669b41bc18b32ea5cbf988b"
 
 [[package]]
 name = "send_wrapper"
@@ -4238,9 +3877,9 @@ checksum = "f638d531eccd6e23b980caf34876660d38e265409d8e99b397ab71eb3612fad0"
 
 [[package]]
 name = "serde"
-version = "1.0.160"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb2f3770c8bce3bcda7e149193a069a0f4365bda1fa5cd88e03bca26afc1216c"
+checksum = "99fce0ffe7310761ca6bf9faf5115afbc19688edd00171d81b1bb1b116c63e09"
 dependencies = [
  "serde_derive",
 ]
@@ -4258,31 +3897,32 @@ dependencies = [
 
 [[package]]
 name = "serde_bytes"
-version = "0.11.9"
+version = "0.11.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "416bda436f9aab92e02c8e10d49a15ddd339cea90b6e340fe51ed97abb548294"
+checksum = "387cc504cb06bb40a96c8e04e951fe01854cf6bc921053c954e4a606d9675c6a"
 dependencies = [
  "serde",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.160"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291a097c63d8497e00160b166a967a4a79c64f3facdd01cbd7502231688d77df"
+checksum = "a5831b979fd7b5439637af1752d535ff49f4860c0f341d1baeb6faf0f4242170"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.96"
+version = "1.0.127"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "057d394a50403bcac12672b2b18fb387ab6d289d957dab67dd201875391e52f1"
+checksum = "8043c06d9f82bd7271361ed64f415fe5e12a77fdb52e573e7f06a516dea329ad"
 dependencies = [
  "itoa",
+ "memchr",
  "ryu",
  "serde",
 ]
@@ -4316,9 +3956,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "881b6f881b17d13214e5d494c939ebab463d01264ce1811e9d4ac3a882e7695f"
 dependencies = [
  "darling 0.20.0",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -4334,17 +3974,6 @@ dependencies = [
  "opaque-debug",
 ]
 
-[[package]]
-name = "sha-1"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5058ada175748e33390e40e872bd0fe59a19f265d0158daa551c5a88a76009c"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest 0.10.6",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.5"
@@ -4353,7 +3982,7 @@ checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.6",
+ "digest 0.10.7",
 ]
 
 [[package]]
@@ -4371,13 +4000,26 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.10.6"
+version = "0.10.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82e6b795fe2e3b1e845bafcb27aa35405c4d47cdfc92af5fc8d3002f76cebdc0"
+checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.6",
+ "digest 0.10.7",
+]
+
+[[package]]
+name = "sha256"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18278f6a914fa3070aa316493f7d2ddfb9ac86ebc06fa3b83bffda487e9065b0"
+dependencies = [
+ "async-trait",
+ "bytes",
+ "hex",
+ "sha2 0.10.8",
+ "tokio",
 ]
 
 [[package]]
@@ -4394,48 +4036,14 @@ dependencies = [
 
 [[package]]
 name = "sha3"
-version = "0.10.7"
+version = "0.10.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54c2bb1a323307527314a36bfb73f24febb08ce2b8a554bf4ffd6f51ad15198c"
+checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
 dependencies = [
- "digest 0.10.6",
+ "digest 0.10.7",
  "keccak",
 ]
 
-[[package]]
-name = "shank"
-version = "0.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b63e565b5e95ad88ab38f312e89444c749360641c509ef2de0093b49f55974a5"
-dependencies = [
- "shank_macro",
-]
-
-[[package]]
-name = "shank_macro"
-version = "0.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63927d22a1e8b74bda98cc6e151fcdf178b7abb0dc6c4f81e0bbf5ffe2fc4ec8"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "shank_macro_impl",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "shank_macro_impl"
-version = "0.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40ce03403df682f80f4dc1efafa87a4d0cb89b03726d0565e6364bdca5b9a441"
-dependencies = [
- "anyhow",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "serde",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "sharded-slab"
 version = "0.1.4"
@@ -4445,12 +4053,6 @@ dependencies = [
  "lazy_static",
 ]
 
-[[package]]
-name = "shell-words"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24188a676b6ae68c3b2cb3a01be17fbf7240ce009799bb56d5b1409051e78fde"
-
 [[package]]
 name = "shellexpand"
 version = "3.1.0"
@@ -4460,6 +4062,12 @@ dependencies = [
  "dirs",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.1"
@@ -4482,14 +4090,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f27f6278552951f1f2b8cf9da965d10969b2efdea95a6ec47987ab46edfe263a"
 
 [[package]]
-name = "sized-chunks"
-version = "0.6.5"
+name = "siphasher"
+version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16d69225bde7a69b235da73377861095455d298f2b970996eec25ddbb42b3d1e"
-dependencies = [
- "bitmaps",
- "typenum",
-]
+checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
 [[package]]
 name = "slab"
@@ -4508,9 +4112,9 @@ checksum = "03b634d87b960ab1a38c4fe143b508576f075e7c978bfad18217645ebfdfa2ec"
 
 [[package]]
 name = "smallvec"
-version = "1.10.0"
+version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
 [[package]]
 name = "socket2"
@@ -4535,17 +4139,17 @@ dependencies = [
  "httparse",
  "log",
  "rand 0.8.5",
- "sha-1 0.9.8",
+ "sha-1",
 ]
 
 [[package]]
 name = "solana-account-decoder"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7e4ac2e5e6474d17f19341df43c62b62ee1e362bae9b06bc30223252dd4a362"
+checksum = "1889be2bdb77224ed1bb726e64983a9ede622da5a22e8fb0619a2ec6885e84f2"
 dependencies = [
  "Inflector",
- "base64 0.13.1",
+ "base64 0.22.1",
  "bincode",
  "bs58",
  "bv",
@@ -4553,186 +4157,69 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "solana-address-lookup-table-program",
  "solana-config-program",
  "solana-sdk",
  "spl-token",
- "spl-token-2022",
+ "spl-token-2022 4.0.0",
+ "spl-token-group-interface 0.3.0",
+ "spl-token-metadata-interface 0.4.0",
  "thiserror",
- "zstd",
+ "zstd 0.11.2+zstd.1.5.2",
+]
+
+[[package]]
+name = "solana-compute-budget"
+version = "2.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1a9d6e202f04a2f57b314ba3494a5230f9708247070393f782a754774b1fbb3"
+dependencies = [
+ "rustc_version",
+ "solana-sdk",
 ]
 
 [[package]]
-name = "solana-address-lookup-table-program"
-version = "1.15.2"
+name = "solana-config-program"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baac6a0dfc38f64e5e5e178e9eeade05ef1a2c644c95062523c6bc21f19f8866"
+checksum = "92bbca6f0351b8bf3de4472a6cdc4e5f94ddd8eb571230eb6c57ed42bda10553"
 dependencies = [
  "bincode",
- "bytemuck",
- "log",
- "num-derive",
- "num-traits",
- "rustc_version 0.4.0",
+ "chrono",
  "serde",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
- "solana-program",
+ "serde_derive",
  "solana-program-runtime",
  "solana-sdk",
- "thiserror",
 ]
 
 [[package]]
-name = "solana-clap-utils"
-version = "1.15.2"
+name = "solana-curve25519"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f0a43f9bcf2405e50190cf3943046663caae557db9eb71a628f359e3f4f3eea"
+checksum = "0aa9209adbba7662a0a6a79ab48b4d09a2cb23a3db3dd817818e1bc28da99a11"
 dependencies = [
- "chrono",
- "clap 2.34.0",
- "rpassword",
- "solana-perf",
- "solana-remote-wallet",
- "solana-sdk",
- "thiserror",
- "tiny-bip39",
- "uriparse",
- "url",
-]
-
-[[package]]
-name = "solana-client"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fe890559c3d8e29123ed0bfba47d5d714acb1db2e4a9a981c9171960ae01425"
-dependencies = [
- "async-trait",
- "bincode",
- "enum_dispatch",
- "futures",
- "futures-util",
- "indexmap",
- "indicatif",
- "log",
- "quinn",
- "rand 0.7.3",
- "rayon",
- "solana-connection-cache",
- "solana-measure",
- "solana-metrics",
- "solana-net-utils",
- "solana-pubsub-client",
- "solana-quic-client",
- "solana-rpc-client",
- "solana-rpc-client-api",
- "solana-rpc-client-nonce-utils",
- "solana-sdk",
- "solana-streamer",
- "solana-thin-client",
- "solana-tpu-client",
- "solana-udp-client",
+ "bytemuck",
+ "bytemuck_derive",
+ "curve25519-dalek",
+ "solana-program",
  "thiserror",
- "tokio",
-]
-
-[[package]]
-name = "solana-config-program"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebb520c573b28060cadd8ae0fa6ae116cf74dac01078bc437d8b3e3ab00efd22"
-dependencies = [
- "bincode",
- "chrono",
- "serde",
- "serde_derive",
- "solana-program-runtime",
- "solana-sdk",
 ]
 
 [[package]]
-name = "solana-connection-cache"
-version = "1.15.2"
+name = "solana-inline-spl"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c913dfcaf847cecd8866e4aeaa440b34c8a5dae6c1c90b7a8cb3265ff9fc775"
+checksum = "9fb9977e0e7769dfef30b1390289a65eb10b9553c4590eecd1fa5abbf2224c30"
 dependencies = [
- "async-trait",
- "bincode",
- "futures-util",
- "indexmap",
- "log",
- "rand 0.7.3",
- "rayon",
- "solana-measure",
- "solana-metrics",
- "solana-net-utils",
+ "bytemuck",
+ "rustc_version",
  "solana-sdk",
- "thiserror",
- "tokio",
-]
-
-[[package]]
-name = "solana-frozen-abi"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48f7051cccdf891ac2603cdd295eb651529fe2b678b6b3af60b82dec9a9b3b06"
-dependencies = [
- "ahash",
- "blake3",
- "block-buffer 0.9.0",
- "bs58",
- "bv",
- "byteorder",
- "cc",
- "either",
- "generic-array",
- "getrandom 0.1.16",
- "hashbrown 0.12.3",
- "im",
- "lazy_static",
- "log",
- "memmap2",
- "once_cell",
- "rand_core 0.6.4",
- "rustc_version 0.4.0",
- "serde",
- "serde_bytes",
- "serde_derive",
- "serde_json",
- "sha2 0.10.6",
- "solana-frozen-abi-macro",
- "subtle",
- "thiserror",
-]
-
-[[package]]
-name = "solana-frozen-abi-macro"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06395428329810ade1d2518a7e75d8a6f02d01fe548aabb60ff1ba6a2eaebbe5"
-dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "rustc_version 0.4.0",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "solana-logger"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "170714ca3612e4df75f57c2c14c8ab74654b3b66f668986aeed456cedcf24446"
-dependencies = [
- "env_logger",
- "lazy_static",
- "log",
 ]
 
 [[package]]
 name = "solana-measure"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52b03528be5a0fbbe4c06a4e1758d155363b51f7c782435b1eb1d4804ab124e3"
+checksum = "2d08a0175bfa4cb16889feeca9d4d5bc144a91cfbe19a3746f1823600a62684b"
 dependencies = [
  "log",
  "solana-sdk",
@@ -4740,9 +4227,9 @@ dependencies = [
 
 [[package]]
 name = "solana-metrics"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc5ff9cbbe50e9918576ff46b4e38d9a946c33fc442982ce7ff397a3b851922a"
+checksum = "d312fb471563f31fee1578ca8c51619458bddf25f36ad10388a2a1812ee27e25"
 dependencies = [
  "crossbeam-channel",
  "gethostname",
@@ -4750,150 +4237,95 @@ dependencies = [
  "log",
  "reqwest",
  "solana-sdk",
-]
-
-[[package]]
-name = "solana-net-utils"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26f35dff5b963ec471514e89bd99c7ac43545756221c99b63c2229cf5f37ebb2"
-dependencies = [
- "bincode",
- "clap 3.2.25",
- "crossbeam-channel",
- "log",
- "nix",
- "rand 0.7.3",
- "serde",
- "serde_derive",
- "socket2",
- "solana-logger",
- "solana-sdk",
- "solana-version",
- "tokio",
- "url",
-]
-
-[[package]]
-name = "solana-perf"
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- "rayon",
- "serde",
- "solana-metrics",
- "solana-rayon-threadlimit",
- "solana-sdk",
- "solana-vote-program",
+ "thiserror",
 ]
 
 [[package]]
 name = "solana-program"
-version = "1.15.2"
+version = "2.0.9"
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-checksum = "1ae9f0fa7db3a4e90fa0df2723ac8cbc042e579cf109cd0380bc5a8c88bed924"
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 dependencies = [
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  "ark-ec",
  "ark-ff",
- "array-bytes",
- "base64 0.13.1",
+ "ark-serialize",
+ "base64 0.22.1",
  "bincode",
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+ "bitflags 2.6.0",
  "blake3",
- "borsh",
- "borsh-derive",
+ "borsh 0.10.3",
+ "borsh 1.5.1",
  "bs58",
  "bv",
  "bytemuck",
- "cc",
+ "bytemuck_derive",
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  "getrandom 0.2.11",
- "itertools",
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  "lazy_static",
- "libc",
  "libsecp256k1",
  "log",
- "memoffset 0.8.0",
- "num-bigint 0.4.3",
+ "memoffset 0.9.1",
+ "num-bigint 0.4.6",
  "num-derive",
  "num-traits",
  "parking_lot",
- "rand 0.7.3",
- "rand_chacha 0.2.2",
- "rustc_version 0.4.0",
+ "rand 0.8.5",
+ "rustc_version",
  "rustversion",
  "serde",
  "serde_bytes",
  "serde_derive",
- "serde_json",
- "sha2 0.10.6",
- "sha3 0.10.7",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
+ "sha2 0.10.8",
+ "sha3 0.10.8",
  "solana-sdk-macro",
  "thiserror",
- "tiny-bip39",
  "wasm-bindgen",
- "zeroize",
 ]
 
 [[package]]
 name = "solana-program-runtime"
-version = "1.15.2"
+version = "2.0.9"
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-checksum = "bbb3250dc9a0abc87693437ae0bb3eb02603396dcf7698c06f77c33b2c0291ca"
+checksum = "f8d2c1801dc17b166db40968ef1ab30f71b319edcaa69efe8c29a66258baff52"
 dependencies = [
- "base64 0.13.1",
+ "base64 0.22.1",
  "bincode",
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- "enum-iterator 1.4.0",
- "itertools",
+ "enum-iterator 1.5.0",
+ "itertools 0.12.1",
  "libc",
- "libloading",
  "log",
  "num-derive",
  "num-traits",
- "rand 0.7.3",
- "rustc_version 0.4.0",
+ "percentage",
+ "rand 0.8.5",
+ "rustc_version",
  "serde",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
+ "solana-compute-budget",
  "solana-measure",
  "solana-metrics",
  "solana-sdk",
+ "solana-type-overrides",
+ "solana-vote",
  "solana_rbpf",
  "thiserror",
 ]
 
 [[package]]
 name = "solana-pubsub-client"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e441892b9a00fdceebb0e7eee3226f2f5985a15d081aab1924a298f24cdadb2"
+checksum = "dfee83758014a114d622926172dc5ba661490bee32b1b6cac5b2fe06d53f3e6e"
 dependencies = [
  "crossbeam-channel",
  "futures-util",
  "log",
  "reqwest",
- "semver 1.0.17",
+ "semver",
  "serde",
  "serde_derive",
  "serde_json",
@@ -4908,77 +4340,21 @@ dependencies = [
  "url",
 ]
 
-[[package]]
-name = "solana-quic-client"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "async-trait",
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- "lazy_static",
- "log",
- "quinn",
- "quinn-proto",
- "quinn-udp",
- "rustls",
- "solana-connection-cache",
- "solana-measure",
- "solana-metrics",
- "solana-net-utils",
- "solana-rpc-client-api",
- "solana-sdk",
- "solana-streamer",
- "solana-tpu-client",
- "thiserror",
- "tokio",
-]
-
-[[package]]
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-version = "1.15.2"
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-dependencies = [
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-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "970f142fbf6bda164847f60977ad56adde32cafb7c798d2e005110410754aa85"
-dependencies = [
- "console",
- "dialoguer",
- "log",
- "num-derive",
- "num-traits",
- "parking_lot",
- "qstring",
- "semver 1.0.17",
- "solana-sdk",
- "thiserror",
- "uriparse",
-]
-
 [[package]]
 name = "solana-rpc-client"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "075485c8ce9300df10b67f01bb9e9ecb79c4c96c58e4b8aacac20e63c6144149"
+checksum = "1940f4fa5dcbffc21c35ac4dc9e63545647b39f24ef92bd60ee4c14373f6c772"
 dependencies = [
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- "base64 0.13.1",
+ "base64 0.22.1",
  "bincode",
  "bs58",
  "indicatif",
  "log",
  "reqwest",
- "semver 1.0.17",
+ "reqwest-middleware",
+ "semver",
  "serde",
  "serde_derive",
  "serde_json",
@@ -4993,85 +4369,70 @@ dependencies = [
 
 [[package]]
 name = "solana-rpc-client-api"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0623112b87c9e65ef00538e27203b6129518d40376a4aa2ddc4fae5bf78a8a2c"
+checksum = "b8045228371e1c8dd9ae7ee5d607640e245c5fb4bcaf74022ce9f7864701d187"
 dependencies = [
- "base64 0.13.1",
+ "anyhow",
+ "base64 0.22.1",
  "bs58",
  "jsonrpc-core",
  "reqwest",
- "semver 1.0.17",
+ "reqwest-middleware",
+ "semver",
  "serde",
  "serde_derive",
  "serde_json",
  "solana-account-decoder",
+ "solana-inline-spl",
  "solana-sdk",
  "solana-transaction-status",
  "solana-version",
- "spl-token-2022",
- "thiserror",
-]
-
-[[package]]
-name = "solana-rpc-client-nonce-utils"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "solana-clap-utils",
- "solana-rpc-client",
- "solana-sdk",
  "thiserror",
 ]
 
 [[package]]
 name = "solana-sdk"
-version = "1.15.2"
+version = "2.0.9"
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-checksum = "bbefda9f9bda78fd9d91ae21c38d9693e94d5979838fb69b70c6addb8dab953f"
+checksum = "da640d96314707ba69feb3c0b1c5fdefb418c5d5e684fe5a9a27b8daae8c18b5"
 dependencies = [
- "assert_matches",
- "base64 0.13.1",
  "bincode",
- "bitflags",
- "borsh",
+ "bitflags 2.6.0",
+ "borsh 1.5.1",
  "bs58",
  "bytemuck",
+ "bytemuck_derive",
  "byteorder",
  "chrono",
  "derivation-path",
- "digest 0.10.6",
+ "digest 0.10.7",
  "ed25519-dalek",
  "ed25519-dalek-bip32",
  "generic-array",
+ "getrandom 0.1.16",
  "hmac 0.12.1",
- "itertools",
+ "itertools 0.12.1",
  "js-sys",
  "lazy_static",
  "libsecp256k1",
  "log",
  "memmap2",
- "num-derive",
- "num-traits",
  "num_enum",
- "pbkdf2 0.11.0",
+ "pbkdf2",
  "qstring",
  "rand 0.7.3",
- "rand_chacha 0.2.2",
- "rustc_version 0.4.0",
+ "rand 0.8.5",
+ "rustc_version",
  "rustversion",
  "serde",
  "serde_bytes",
  "serde_derive",
  "serde_json",
  "serde_with",
- "sha2 0.10.6",
- "sha3 0.10.7",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
- "solana-logger",
+ "sha2 0.10.8",
+ "sha3 0.10.8",
+ "siphasher",
  "solana-program",
  "solana-sdk-macro",
  "thiserror",
@@ -5081,100 +4442,33 @@ dependencies = [
 
 [[package]]
 name = "solana-sdk-macro"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f809319358d5da7c3a0ac08ebf4d87b21170d928dbb7260254e8f3061f7f9e0e"
+checksum = "45b6e930455ef68cf15e5a22a0e0c207e67c3d70978a565e0a64f568c8a24129"
 dependencies = [
  "bs58",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "rustversion",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "solana-streamer"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddd5b3dad02879b083b7218b9f9596d97cee8deda2b625bff67db95d8920f5f7"
-dependencies = [
- "crossbeam-channel",
- "futures-util",
- "histogram",
- "indexmap",
- "itertools",
- "libc",
- "log",
- "nix",
- "pem",
- "percentage",
- "pkcs8",
- "quinn",
- "quinn-proto",
- "quinn-udp",
- "rand 0.7.3",
- "rcgen",
- "rustls",
- "solana-metrics",
- "solana-perf",
- "solana-sdk",
- "thiserror",
- "tokio",
- "x509-parser",
-]
-
-[[package]]
-name = "solana-thin-client"
-version = "1.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b16bdd6347caf841a007952c748cd35c3ec8395aa3816ac59b4a9b4c102237de"
-dependencies = [
- "bincode",
- "log",
- "rayon",
- "solana-connection-cache",
- "solana-rpc-client",
- "solana-rpc-client-api",
- "solana-sdk",
- "solana-tpu-client",
+ "syn 2.0.77",
 ]
 
 [[package]]
-name = "solana-tpu-client"
-version = "1.15.2"
+name = "solana-security-txt"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50a7dfa7a85ba000656d91c8847b61f8fa9b8067443449fab8e4c35fe01dee5c"
-dependencies = [
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- "bincode",
- "futures-util",
- "indexmap",
- "indicatif",
- "log",
- "rand 0.7.3",
- "rayon",
- "solana-connection-cache",
- "solana-measure",
- "solana-metrics",
- "solana-net-utils",
- "solana-pubsub-client",
- "solana-rpc-client",
- "solana-rpc-client-api",
- "solana-sdk",
- "thiserror",
- "tokio",
-]
+checksum = "468aa43b7edb1f9b7b7b686d5c3aeb6630dc1708e86e31343499dd5c4d775183"
 
 [[package]]
 name = "solana-transaction-status"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b803e356fc2de0074866a6da007e721c950e754747e761a263b7f9e4c17edefa"
+checksum = "4e3294eebb17ee6a2bf7f5365a332da714a8c88b92e59121fc32c495d0f7c4d8"
 dependencies = [
  "Inflector",
- "base64 0.13.1",
+ "base64 0.22.1",
  "bincode",
- "borsh",
+ "borsh 1.5.1",
  "bs58",
  "lazy_static",
  "log",
@@ -5182,62 +4476,68 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "solana-account-decoder",
- "solana-address-lookup-table-program",
  "solana-sdk",
- "spl-associated-token-account",
+ "spl-associated-token-account 4.0.0",
  "spl-memo",
  "spl-token",
- "spl-token-2022",
+ "spl-token-2022 4.0.0",
+ "spl-token-group-interface 0.3.0",
+ "spl-token-metadata-interface 0.4.0",
  "thiserror",
 ]
 
 [[package]]
-name = "solana-udp-client"
-version = "1.15.2"
+name = "solana-type-overrides"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1b0d7efeb2cb7dafbf3b085c895e440b8947fe5def6bdad17ebae9badfdecb0"
+checksum = "a4201087a2d944f1fe1a5531d612384a825378339b26c84df4681afb7b52018b"
 dependencies = [
- "async-trait",
- "solana-connection-cache",
- "solana-net-utils",
- "solana-sdk",
- "solana-streamer",
- "solana-tpu-client",
- "thiserror",
- "tokio",
+ "lazy_static",
+ "rand 0.8.5",
 ]
 
 [[package]]
 name = "solana-version"
-version = "1.15.2"
+version = "2.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c5e80bec4215dac4a0bacd3b68be430621adf1a37aba3239032f8c91ab1517a"
+dependencies = [
+ "log",
+ "rustc_version",
+ "semver",
+ "serde",
+ "serde_derive",
+ "solana-sdk",
+]
+
+[[package]]
+name = "solana-vote"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c3df7b4a4dc0a39da78d790845089a8d112fcd6d2d003ae93830387a564cfc5"
+checksum = "7a72891adbea06048965dfd4e0f1897f113d03bafb9e81f895bbe560e0b3a5ec"
 dependencies = [
+ "itertools 0.12.1",
  "log",
- "rustc_version 0.4.0",
- "semver 1.0.17",
+ "rustc_version",
  "serde",
  "serde_derive",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
  "solana-sdk",
+ "thiserror",
 ]
 
 [[package]]
 name = "solana-vote-program"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2439b8c68f000f8c3713eceabb5cabc8528d276e5bc971c694d4103d4be958ff"
+checksum = "cd00cd5515020cb6c0c5167f1d173fddeae5e1f7ffd77909ea43bece86f38cc9"
 dependencies = [
  "bincode",
  "log",
  "num-derive",
  "num-traits",
- "rustc_version 0.4.0",
+ "rustc_version",
  "serde",
  "serde_derive",
- "solana-frozen-abi",
- "solana-frozen-abi-macro",
  "solana-metrics",
  "solana-program",
  "solana-program-runtime",
@@ -5245,30 +4545,59 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "solana-zk-sdk"
+version = "2.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "366951623087ec3221605dfaae7f94e61d7b6593fa3cc62eae1f767bcc9f7d79"
+dependencies = [
+ "aes-gcm-siv",
+ "base64 0.22.1",
+ "bincode",
+ "bytemuck",
+ "bytemuck_derive",
+ "curve25519-dalek",
+ "itertools 0.12.1",
+ "lazy_static",
+ "merlin",
+ "num-derive",
+ "num-traits",
+ "rand 0.7.3",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "sha3 0.9.1",
+ "solana-program",
+ "solana-sdk",
+ "subtle",
+ "thiserror",
+ "zeroize",
+]
+
 [[package]]
 name = "solana-zk-token-sdk"
-version = "1.15.2"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a290aa32014e007b03f952d5b784433d95636c65a3fb08d19dc5658a450941c"
+checksum = "860d780884e7e0eab6bdc909d80ef32b791d1c0963aff8cdfcbd4f00ca640c8a"
 dependencies = [
  "aes-gcm-siv",
- "arrayref",
- "base64 0.13.1",
+ "base64 0.22.1",
  "bincode",
  "bytemuck",
+ "bytemuck_derive",
  "byteorder",
- "cipher 0.4.4",
  "curve25519-dalek",
- "getrandom 0.1.16",
- "itertools",
+ "itertools 0.12.1",
  "lazy_static",
  "merlin",
  "num-derive",
  "num-traits",
  "rand 0.7.3",
  "serde",
+ "serde_derive",
  "serde_json",
  "sha3 0.9.1",
+ "solana-curve25519",
  "solana-program",
  "solana-sdk",
  "subtle",
@@ -5278,9 +4607,9 @@ dependencies = [
 
 [[package]]
 name = "solana_rbpf"
-version = "0.2.38"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4e9e5085099858adba23d0a0b5298da8803f89999cb567ecafab9c916cdf53d"
+checksum = "ff08afd63f70a1ba712fb0017be41e93b017f7e874785b54bb5ec9aa8949781d"
 dependencies = [
  "byteorder",
  "combine",
@@ -5296,77 +4625,381 @@ dependencies = [
 ]
 
 [[package]]
-name = "spin"
-version = "0.5.2"
+name = "spin"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
+
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
+[[package]]
+name = "spl-associated-token-account"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68034596cf4804880d265f834af1ff2f821ad5293e41fa0f8f59086c181fc38e"
+dependencies = [
+ "assert_matches",
+ "borsh 1.5.1",
+ "num-derive",
+ "num-traits",
+ "solana-program",
+ "spl-token",
+ "spl-token-2022 4.0.0",
+ "thiserror",
+]
+
+[[package]]
+name = "spl-associated-token-account"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d78b20903ab0fa951f07eeb4e24ea6a7f6ed91f655c2d75a5675f2ba6c73d64b"
+dependencies = [
+ "borsh 1.5.1",
+ "num-derive",
+ "num-traits",
+ "solana-program",
+ "spl-associated-token-account-client",
+ "spl-token",
+ "spl-token-2022 5.0.1",
+ "thiserror",
+]
+
+[[package]]
+name = "spl-associated-token-account-client"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c5c1e2d53941ea7ebc4be3f86302a3c6c5178baa932bbc038468429e6900d36"
+dependencies = [
+ "solana-program",
+]
+
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- "num_enum",
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+ "spl-pod 0.4.0",
+ "spl-program-error",
+ "spl-tlv-account-resolution 0.8.0",
+ "spl-type-length-value",
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 [[package]]
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- "num-traits",
- "num_enum",
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- "solana-zk-token-sdk",
- "spl-memo",
- "spl-token",
- "thiserror",
+ "spl-discriminator",
+ "spl-pod 0.3.1",
+ "spl-program-error",
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-
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- "quote 0.6.13",
- "unicode-xid 0.1.0",
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
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- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
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 [[package]]
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-version = "2.0.15"
+name = "syn_derive"
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 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "unicode-ident",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
+]
+
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+checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
+
+[[package]]
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+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "system-configuration-sys",
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 [[package]]
-name = "synstructure"
-version = "0.12.6"
+name = "system-configuration-sys"
+version = "0.5.0"
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-checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
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 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
- "unicode-xid 0.2.4",
+ "core-foundation-sys",
+ "libc",
 ]
 
 [[package]]
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 checksum = "fd1ba337640d60c3e96bc6f0638a939b9c9a7f2c316a1598c279828b3d1dc8c5"
 
+[[package]]
+name = "task-local-extensions"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba323866e5d033818e3240feeb9f7db2c4296674e4d9e16b97b7bf8f490434e8"
+dependencies = [
+ "pin-utils",
+]
+
 [[package]]
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 version = "3.5.0"
@@ -5477,39 +5129,24 @@ dependencies = [
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 ]
 
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-
 [[package]]
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-checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
+checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
 dependencies = [
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 ]
 
 [[package]]
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-version = "1.0.40"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
+checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -5522,17 +5159,6 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "0.1.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b797afad3f312d1c66a56d11d0316f916356d11bd158fbc6ca6389ff6bf805a"
-dependencies = [
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- "wasi 0.10.0+wasi-snapshot-preview1",
- "winapi",
-]
-
 [[package]]
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 version = "0.3.20"
@@ -5560,25 +5186,6 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffc59cb9dfc85bb312c3a78fd6aa8a8582e310b0fa885d5bb877f6dcc601839d"
-dependencies = [
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- "hmac 0.8.1",
- "once_cell",
- "pbkdf2 0.4.0",
- "rand 0.7.3",
- "rustc-hash",
- "sha2 0.9.9",
- "thiserror",
- "unicode-normalization",
- "wasm-bindgen",
- "zeroize",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -5596,11 +5203,12 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.28.0"
+version = "1.29.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3c786bf8134e5a3a166db9b29ab8f48134739014a3eca7bc6bfa95d673b136f"
+checksum = "532826ff75199d5833b9d2c5fe410f29235e25704ee5f0ef599fb51c21f4a4da"
 dependencies = [
  "autocfg",
+ "backtrace",
  "bytes",
  "libc",
  "mio",
@@ -5619,9 +5227,9 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -5636,20 +5244,19 @@ dependencies = [
 
 [[package]]
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-version = "0.23.4"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c43ee83903113e03984cb9e5cebe6c04a5116269e900e3ddba8f068a62adda59"
+checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
 dependencies = [
  "rustls",
  "tokio",
- "webpki",
 ]
 
 [[package]]
 name = "tokio-stream"
-version = "0.1.14"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "397c988d37662c7dda6d2208364a706264bf3d6138b11d436cbac0ad38832842"
+checksum = "267ac89e0bec6e691e5813911606935d77c476ff49024f98abcea3e7b15e37af"
 dependencies = [
  "futures-core",
  "pin-project-lite",
@@ -5659,9 +5266,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-tungstenite"
-version = "0.17.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f714dd15bead90401d77e04243611caec13726c2408afd5b31901dfcdcb3b181"
+checksum = "212d5dcb2a1ce06d81107c3d0ffa3121fe974b73f068c8282cb1c32328113b6c"
 dependencies = [
  "futures-util",
  "log",
@@ -5669,8 +5276,7 @@ dependencies = [
  "tokio",
  "tokio-rustls",
  "tungstenite",
- "webpki",
- "webpki-roots",
+ "webpki-roots 0.25.4",
 ]
 
 [[package]]
@@ -5699,9 +5305,9 @@ dependencies = [
 
 [[package]]
 name = "toml_datetime"
-version = "0.6.1"
+version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
+checksum = "0dd7358ecb8fc2f8d014bf86f6f638ce72ba252a2c3a2572f2a795f1d23efb41"
 
 [[package]]
 name = "toml_edit"
@@ -5709,9 +5315,20 @@ version = "0.19.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "239410c8609e8125456927e6707163a3b1fdb40561e4b803bc041f466ccfdc13"
 dependencies = [
- "indexmap",
+ "indexmap 1.9.3",
+ "toml_datetime",
+ "winnow 0.4.4",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "583c44c02ad26b0c3f3066fe629275e50627026c51ac2e595cca4c230ce1ce1d"
+dependencies = [
+ "indexmap 2.5.0",
  "toml_datetime",
- "winnow",
+ "winnow 0.6.18",
 ]
 
 [[package]]
@@ -5723,7 +5340,7 @@ dependencies = [
  "futures-core",
  "futures-util",
  "hdrhistogram",
- "indexmap",
+ "indexmap 1.9.3",
  "pin-project",
  "pin-project-lite",
  "rand 0.8.5",
@@ -5737,13 +5354,13 @@ dependencies = [
 
 [[package]]
 name = "tower-http"
-version = "0.3.5"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f873044bf02dd1e8239e9c1293ea39dad76dc594ec16185d0a1bf31d8dc8d858"
+checksum = "61c5bb1d698276a2443e5ecfabc1008bf15a36c12e6a7176e7bf089ea9131140"
 dependencies = [
  "async-compression",
- "base64 0.13.1",
- "bitflags",
+ "base64 0.21.7",
+ "bitflags 2.6.0",
  "bytes",
  "futures-core",
  "futures-util",
@@ -5790,15 +5407,27 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-appender"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3566e8ce28cc0a3fe42519fc80e6b4c943cc4c8cef275620eb8dac2d3d4e06cf"
+dependencies = [
+ "crossbeam-channel",
+ "thiserror",
+ "time",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0f57e3ca2a01450b1a921183a9c9cbfda207fd822cef4ccb00a65402cbba7a74"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -5813,20 +5442,20 @@ dependencies = [
 
 [[package]]
 name = "tracing-log"
-version = "0.1.3"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78ddad33d2d10b1ed7eb9d1f518a5674713876e97e5bb9b7345a7984fbb4f922"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
 dependencies = [
- "lazy_static",
  "log",
+ "once_cell",
  "tracing-core",
 ]
 
 [[package]]
 name = "tracing-subscriber"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30a651bc37f915e81f087d86e62a18eec5f79550c7faff886f7090b4ea757c77"
+checksum = "ad0f048c97dbd9faa9b7df56362b8ebcaa52adb06b498c050d2f4e32f90a7a8b"
 dependencies = [
  "matchers",
  "nu-ansi-term",
@@ -5848,24 +5477,23 @@ checksum = "3528ecfd12c466c6f163363caf2d02a71161dd5e1cc6ae7b34207ea2d42d81ed"
 
 [[package]]
 name = "tungstenite"
-version = "0.17.3"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e27992fd6a8c29ee7eef28fc78349aa244134e10ad447ce3b9f0ac0ed0fa4ce0"
+checksum = "9e3dac10fd62eaf6617d3a904ae222845979aec67c615d1c842b4002c7666fb9"
 dependencies = [
- "base64 0.13.1",
  "byteorder",
  "bytes",
+ "data-encoding",
  "http",
  "httparse",
  "log",
  "rand 0.8.5",
  "rustls",
- "sha-1 0.10.1",
+ "sha1",
  "thiserror",
  "url",
  "utf-8",
- "webpki",
- "webpki-roots",
+ "webpki-roots 0.24.0",
 ]
 
 [[package]]
@@ -5874,12 +5502,6 @@ version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
-[[package]]
-name = "ucd-trie"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e79c4d996edb816c91e4308506774452e55e95c3c9de07b6729e17e15a5ef81"
-
 [[package]]
 name = "unicase"
 version = "2.6.0"
@@ -5916,25 +5538,13 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
-[[package]]
-name = "unicode-xid"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
-
 [[package]]
 name = "universal-hash"
-version = "0.4.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f214e8f697e925001e66ec2c6e37a4ef93f0f78c2eed7814394e10c62025b05"
+checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
 dependencies = [
- "generic-array",
+ "crypto-common",
  "subtle",
 ]
 
@@ -5953,6 +5563,12 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "uriparse"
 version = "0.6.4"
@@ -5965,9 +5581,9 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "2.3.1"
+version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d68c799ae75762b8c3fe375feb6600ef5602c883c5d21eb51c09f22b83c4643"
+checksum = "22784dbdf76fdde8af1aeda5622b546b422b6fc585325248a2bf9f5e41e94d6c"
 dependencies = [
  "form_urlencoded",
  "idna",
@@ -6008,12 +5624,6 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
-[[package]]
-name = "vec_map"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
-
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -6042,12 +5652,6 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
-[[package]]
-name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -6056,26 +5660,27 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.84"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31f8dcbc21f30d9b8f2ea926ecb58f6b91192c17e9d33594b3df58b2007ca53b"
+checksum = "a82edfc16a6c469f5f44dc7b571814045d60404b55a0ee849f9bcfa2e63dd9b5"
 dependencies = [
  "cfg-if",
+ "once_cell",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.84"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
+checksum = "9de396da306523044d3302746f1208fa71d7532227f15e347e2d93e4145dd77b"
 dependencies = [
  "bumpalo",
  "log",
  "once_cell",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
  "wasm-bindgen-shared",
 ]
 
@@ -6097,8 +5702,8 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c5020cfa87c7cecefef118055d44e3c1fc122c7ec25701d528ee458a0b45f38f"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -6116,32 +5721,32 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.84"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
+checksum = "585c4c91a46b072c92e908d99cb1dcdf95c5218eeb6f3bf1efa991ee7a68cccf"
 dependencies = [
- "quote 1.0.26",
+ "quote",
  "wasm-bindgen-macro-support",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.84"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
+checksum = "afc340c74d9005395cf9dd098506f7f44e38f2b4a21c6aaacf9a105ea5e1e836"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 1.0.109",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.84"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
+checksum = "c62a0a307cb4a311d3a07867860911ca130c3494e8c2719593806c08bc5d0484"
 
 [[package]]
 name = "wasm-encoder"
@@ -6161,7 +5766,7 @@ dependencies = [
  "bytes",
  "cfg-if",
  "derivative",
- "indexmap",
+ "indexmap 1.9.3",
  "js-sys",
  "more-asserts",
  "serde",
@@ -6229,8 +5834,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb6858f330764b1041e68d3c824970064d2fbd8e27704180289fd248ff892c48"
 dependencies = [
  "proc-macro-error",
- "proc-macro2 1.0.56",
- "quote 1.0.26",
+ "proc-macro2",
+ "quote",
  "syn 1.0.109",
 ]
 
@@ -6243,7 +5848,7 @@ dependencies = [
  "bytecheck",
  "enum-iterator 0.7.0",
  "enumset",
- "indexmap",
+ "indexmap 1.9.3",
  "more-asserts",
  "rkyv",
  "target-lexicon",
@@ -6264,7 +5869,7 @@ dependencies = [
  "derivative",
  "enum-iterator 0.7.0",
  "fnv",
- "indexmap",
+ "indexmap 1.9.3",
  "lazy_static",
  "libc",
  "mach",
@@ -6283,7 +5888,7 @@ version = "0.95.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2ea896273ea99b15132414be1da01ab0d8836415083298ecaffbe308eaac87a"
 dependencies = [
- "indexmap",
+ "indexmap 1.9.3",
  "url",
 ]
 
@@ -6319,24 +5924,29 @@ dependencies = [
 ]
 
 [[package]]
-name = "webpki"
-version = "0.22.0"
+name = "webpki-roots"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f095d78192e208183081cc07bc5515ef55216397af48b873e5edcd72637fa1bd"
+checksum = "b03058f88386e5ff5310d9111d53f48b17d732b401aeb83a8d5190f2ac459338"
 dependencies = [
- "ring",
- "untrusted",
+ "rustls-webpki 0.100.3",
 ]
 
 [[package]]
 name = "webpki-roots"
-version = "0.22.6"
+version = "0.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
+checksum = "b291546d5d9d1eab74f069c77749f2cb8504a12caa20f0f2de93ddbf6f411888"
 dependencies = [
- "webpki",
+ "rustls-webpki 0.101.7",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.25.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f20c57d8d7db6d3b86154206ae5d8fba62dd39573114de97c2cb0578251f8e1"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -6423,6 +6033,15 @@ dependencies = [
  "windows-targets 0.48.0",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"
@@ -6453,6 +6072,22 @@ dependencies = [
  "windows_x86_64_msvc 0.48.0",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"
@@ -6465,6 +6100,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.33.0"
@@ -6483,6 +6124,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.33.0"
@@ -6501,6 +6148,18 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.33.0"
@@ -6519,6 +6178,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.33.0"
@@ -6537,6 +6202,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -6549,6 +6220,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.33.0"
@@ -6567,6 +6244,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
 [[package]]
 name = "winnow"
 version = "0.4.4"
@@ -6576,40 +6259,43 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winnow"
+version = "0.6.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68a9bda4691f099d435ad181000724da8e5899daa10713c2d432552b9ccd3a6f"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "winreg"
-version = "0.10.1"
+version = "0.50.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+checksum = "524e57b2c537c0f9b1e69f1965311ec12182b4122e45035b1508cd24d2adadb1"
 dependencies = [
- "winapi",
+ "cfg-if",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
-name = "x509-parser"
-version = "0.14.0"
+name = "zerocopy"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0ecbeb7b67ce215e40e3cc7f2ff902f94a223acf44995934763467e7b1febc8"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
- "asn1-rs",
- "base64 0.13.1",
- "data-encoding",
- "der-parser",
- "lazy_static",
- "nom",
- "oid-registry",
- "rusticata-macros",
- "thiserror",
- "time 0.3.20",
+ "zerocopy-derive",
 ]
 
 [[package]]
-name = "yasna"
-version = "0.5.2"
+name = "zerocopy-derive"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e17bb3549cc1321ae1296b9cdc2698e2b6cb1992adfa19a8c72e5b7a738f44cd"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
- "time 0.3.20",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -6627,9 +6313,9 @@ version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
- "proc-macro2 1.0.56",
- "quote 1.0.26",
- "syn 2.0.15",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -6638,7 +6324,16 @@ version = "0.11.2+zstd.1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20cc960326ece64f010d2d2107537f26dc589a6573a316bd5b1dba685fa5fde4"
 dependencies = [
- "zstd-safe",
+ "zstd-safe 5.0.2+zstd.1.5.2",
+]
+
+[[package]]
+name = "zstd"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bffb3309596d527cfcba7dfc6ed6052f1d39dfbd7c867aa2e865e4a449c10110"
+dependencies = [
+ "zstd-safe 7.0.0",
 ]
 
 [[package]]
@@ -6651,6 +6346,15 @@ dependencies = [
  "zstd-sys",
 ]
 
+[[package]]
+name = "zstd-safe"
+version = "7.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43747c7422e2924c11144d5229878b98180ef8b06cca4ab5af37afc8a8d8ea3e"
+dependencies = [
+ "zstd-sys",
+]
+
 [[package]]
 name = "zstd-sys"
 version = "2.0.8+zstd.1.5.5"
diff --git a/Cargo.toml b/Cargo.toml
index 152cb7e9..a7860665 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,10 +13,11 @@ members = [
   "env",
   "client",
   "test",
-  "examples/draw-card",
-  "examples/simple-settle",
+  "local-db",
   "examples/minimal",
+  "examples/draw-card",
   "examples/raffle",
+  # "examples/simple-settle",
   # "examples/blackjack",
   # "examples/roshambo",
   # "examples/chat",
@@ -24,6 +25,7 @@ members = [
 
 [workspace.dependencies]
 race-api = { path = "api", version = ">=0.2.6" }
+race-local-db = { path = "local-db", version = ">=0.2.6" }
 race-proc-macro = { path = "proc-macro", version = ">=0.2.6" }
 race-core = { path = "core", version = ">=0.2.6" }
 race-client = { path = "client", version = ">=0.2.6" }
@@ -38,13 +40,14 @@ quote = "1.0.23"
 anyhow = "1.0.64"
 tokio = "1.27.0"
 tokio-stream = "0.1.11"
-jsonrpsee = "0.16.1"
-tower-http = "0.3.4"
+jsonrpsee = "0.17.1"
+tower-http = "0.4.4"
 tower = "0.4.13"
 hyper = "0.14.20"
 tracing = "0.1.36"
 tracing-subscriber = "0.3.15"
-borsh = "0.9.3"
+tracing-appender = "0.2.3"
+borsh = { version = "1.5.1", features = ["derive"] }
 serde_json = "1.0.85"
 serde = "1.0.144"
 thiserror = "1.0.35"
@@ -56,28 +59,32 @@ async-stream = "0.3.3"
 async-trait = "0.1.58"
 futures = "0.3.25"
 base64 = "0.21.0"
-solana-program = "1.14.18"
-solana-program-test = "1.14.18"
-solana-client = "1.14.18"
-solana-sdk = "1.14.18"
-spl-token = "3.5.0"
-spl-associated-token-account = "1.1.2"
-mpl-token-metadata = "1.13.0"
+solana-rpc-client = "2.0.8"
+solana-rpc-client-api = "2.0.8"
+solana-pubsub-client = "2.0.8"
+solana-account-decoder = "2.0.8"
+solana-sdk = "2.0.8"
+spl-token = "6.0.0"
+spl-associated-token-account = "5.0.0"
 shellexpand = "3.0.0"
 getrandom = "0.2"
 rand = "0.8.5"
 toml = "0.5.9"
+rusqlite = "0.32.0"
 project-root = "0.2.2"
 reqwest = "0.11.16"
 openssl = { version = "^0.10" }
 prettytable-rs = "^0.10"
-sha1 = { version = "0.10.5", default-features = false, features = ["oid"] }
+# sha1 = { version = "0.10.5", default-features = false, features = ["oid"] }
+sha2 = "0.10.8"
+sha256 = "1.5.0"
 aes = "0.8.2"
 ctr = "0.9.2"
 chrono = "0.4.24"
 chacha20 = "0.9.1"
 regex = "1"
 infer = "0.15.0"
+rs_merkle = "1.4.2"
 
 [workspace.package]
 authors = ["RACE Foundation <race.game.team@gmail.com>"]
diff --git a/Justfile b/Justfile
index 8026d5f2..7740630e 100644
--- a/Justfile
+++ b/Justfile
@@ -73,12 +73,10 @@ dev-facade *ARGS:
 dev-reg-transactor conf:
     cargo run -p race-transactor -- -c {{conf}} reg
 
-dev-transactor conf:
+dev-run-transactor conf:
     cargo run -p race-transactor -- -c {{conf}} run
 
-facade-transactor num:
-    cargo run -p race-transactor -- -c examples/conf/server{{num}}.toml reg
-    cargo run -p race-transactor -- -c examples/conf/server{{num}}.toml run
+dev-transactor conf: (dev-reg-transactor conf) (dev-run-transactor conf)
 
 solana:
     (cd contracts/solana; cargo build-sbf)
diff --git a/README.md b/README.md
index 4bb45e4e..bc6dfd05 100644
--- a/README.md
+++ b/README.md
@@ -33,9 +33,9 @@ Work in progress, not ready to accept contributions yet.
 | Package                     | Version                                                                                                                              | Description                                    |
 |-----------------------------|--------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------|
 | @race-foundation/borsh      | [![NPM](https://img.shields.io/npm/v/@race-foundation/borsh?logo=npm)](https://www.npmjs.com/package/@race-foundation/borsh)         | A borsh implementation with decorators support |
-| @race-fonudation/sdk-core   | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-core)   | SDK for RACE Protocol                          |
-| @race-fonudation/sdk-solana | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-solana) | SDK integration for Solana blockchain          |
-| @race-fonudation/sdk-facade | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-facade) | SDK integration for local facade server        |
+| @race-foundation/sdk-core   | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-core)   | SDK for RACE Protocol                          |
+| @race-foundation/sdk-solana | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-solana) | SDK integration for Solana blockchain          |
+| @race-foundation/sdk-facade | [![NPM](https://img.shields.io/npm/v/@race-foundation/sdk-core?logo=npm)](https://www.npmjs.com/package/@race-foundation/sdk-facade) | SDK integration for local facade server        |
 
 ## Rust
 
diff --git a/api/src/effect.rs b/api/src/effect.rs
index 0f0c9433..f8ea7eb0 100644
--- a/api/src/effect.rs
+++ b/api/src/effect.rs
@@ -7,19 +7,21 @@ use borsh::{BorshDeserialize, BorshSerialize};
 use crate::{
     engine::GameHandler,
     error::{Error, HandleError, Result},
+    event::BridgeEvent,
+    prelude::InitAccount,
     random::RandomSpec,
-    types::{DecisionId, RandomId, Settle, Transfer},
+    types::{DecisionId, GamePlayer, RandomId, Settle, Transfer},
 };
 
 #[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq)]
 pub struct Ask {
-    pub player_addr: String,
+    pub player_id: u64,
 }
 
 #[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq)]
 pub struct Assign {
     pub random_id: RandomId,
-    pub player_addr: String,
+    pub player_id: u64,
     pub indexes: Vec<usize>,
 }
 
@@ -36,10 +38,74 @@ pub struct Release {
 
 #[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq)]
 pub struct ActionTimeout {
-    pub player_addr: String,
+    pub player_id: u64,
     pub timeout: u64,
 }
 
+#[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq, Clone)]
+pub struct SubGame {
+    pub id: usize,
+    pub bundle_addr: String,
+    pub init_account: InitAccount,
+}
+
+#[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq, Clone)]
+pub struct SubGameJoin {
+    pub id: usize,
+    pub players: Vec<GamePlayer>,
+}
+
+#[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq, Clone)]
+pub struct SubGameLeave {
+    pub id: usize,
+    pub player_ids: Vec<u64>,
+}
+
+impl SubGame {
+
+    pub fn try_new<S: BorshSerialize, T: BorshSerialize>(
+        id: usize,
+        bundle_addr: String,
+        max_players: u16,
+        players: Vec<GamePlayer>,
+        init_data: S,
+        checkpoint_state: T,
+    ) -> Result<Self> {
+        Ok(Self {
+            id,
+            bundle_addr,
+            init_account: InitAccount {
+                max_players,
+                entry_type: crate::types::EntryType::Disabled,
+                players,
+                data: borsh::to_vec(&init_data)?,
+                checkpoint: Some(borsh::to_vec(&checkpoint_state)?),
+            },
+        })
+    }
+}
+
+#[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq, Clone)]
+pub struct EmitBridgeEvent {
+    pub dest: usize,
+    pub raw: Vec<u8>,
+    pub join_players: Vec<GamePlayer>,
+}
+
+impl EmitBridgeEvent {
+    pub fn try_new<E: BridgeEvent>(
+        dest: usize,
+        bridge_event: E,
+        join_players: Vec<GamePlayer>,
+    ) -> Result<Self> {
+        Ok(Self {
+            dest,
+            raw: borsh::to_vec(&bridge_event)?,
+            join_players,
+        })
+    }
+}
+
 /// An effect used in game handler provides reading and mutating to
 /// the game context.  An effect can be created from game context,
 /// manipulated by game handler and applied after event processing.
@@ -69,7 +135,7 @@ pub struct ActionTimeout {
 /// ```
 /// # use race_api::effect::Effect;
 /// let mut effect = Effect::default();
-/// effect.assign(1 /* random_id */, "Alice", vec![0, 1, 2] /* indexes */);
+/// effect.assign(1 /* random_id */, 0 /* player_id */, vec![0, 1, 2] /* indexes */);
 /// ```
 /// To reveal some items to the public, use [`Effect::reveal`].
 /// It makes those items visible to everyone, including servers.
@@ -87,7 +153,7 @@ pub struct ActionTimeout {
 /// ```
 /// # use race_api::effect::Effect;
 /// let mut effect = Effect::default();
-/// let decision_id = effect.ask("Alice");
+/// let decision_id = effect.ask(0 /* player_id */);
 /// ```
 ///
 /// To reveal the answer, use [`Effect::reveal_answer`].
@@ -121,15 +187,16 @@ pub struct ActionTimeout {
 /// use race_api::types::Settle;
 /// let mut effect = Effect::default();
 /// // Increase assets
-/// effect.settle(Settle::add("Alice", 100));
+/// effect.settle(Settle::add(0 /* player_id */, 100 /* amount */));
 /// // Decrease assets
-/// effect.settle(Settle::sub("Bob", 200));
+/// effect.settle(Settle::sub(1 /* player_id */, 200 /* amount */));
 /// // Remove player from this game, its assets will be paid out
-/// effect.settle(Settle::eject("Charlie"));
+/// effect.settle(Settle::eject(2 /* player_id*/));
+/// // Make the checkpoint
+/// effect.checkpoint();
 /// ```
 
-#[cfg_attr(test, derive(PartialEq, Eq))]
-#[derive(Default, BorshSerialize, BorshDeserialize, Debug)]
+#[derive(Default, BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq)]
 pub struct Effect {
     pub action_timeout: Option<ActionTimeout>,
     pub wait_timeout: Option<u64>,
@@ -139,8 +206,7 @@ pub struct Effect {
     pub timestamp: u64,
     pub curr_random_id: RandomId,
     pub curr_decision_id: DecisionId,
-    pub players_count: u16,
-    pub servers_count: u16,
+    pub nodes_count: u16,
     pub asks: Vec<Ask>,
     pub assigns: Vec<Assign>,
     pub reveals: Vec<Reveal>,
@@ -149,23 +215,38 @@ pub struct Effect {
     pub revealed: HashMap<RandomId, HashMap<usize, String>>,
     pub answered: HashMap<DecisionId, String>,
     pub is_checkpoint: bool,
-    pub checkpoint: Option<Vec<u8>>,
     pub settles: Vec<Settle>,
     pub handler_state: Option<Vec<u8>>,
     pub error: Option<HandleError>,
     pub allow_exit: bool,
     pub transfers: Vec<Transfer>,
+    pub launch_sub_games: Vec<SubGame>,
+    pub bridge_events: Vec<EmitBridgeEvent>,
+    pub valid_players: Vec<GamePlayer>,
+    pub is_init: bool,
 }
 
 impl Effect {
-    /// Return the number of players, including both the pending and joined.
-    pub fn count_players(&self) -> usize {
-        self.players_count as usize
+    fn assert_player_id(&self, id: u64, reason: &str) -> Result<()> {
+        if self.valid_players.is_empty() {
+            // Skip check
+            return Ok(());
+        }
+
+        if self.valid_players.iter().any(|p| p.id == id) {
+            Ok(())
+        } else {
+            Err(Error::InvalidPlayerId(
+                id,
+                self.valid_players.iter().map(|p| p.id).collect(),
+                reason.to_string(),
+            ))
+        }
     }
 
-    /// Return the number of servers, including both the pending and joined.
-    pub fn count_servers(&self) -> usize {
-        self.servers_count as usize
+    /// Return the number of nodes, including both the pending and joined.
+    pub fn count_nodes(&self) -> usize {
+        self.nodes_count as usize
     }
 
     /// Initialize a random state with random spec, return random id.
@@ -177,17 +258,19 @@ impl Effect {
     }
 
     /// Assign some random items to a specific player.
-    pub fn assign<S: Into<String>>(
+    pub fn assign(
         &mut self,
         random_id: RandomId,
-        player_addr: S,
+        player_id: u64,
         indexes: Vec<usize>,
-    ) {
+    ) -> Result<()> {
+        self.assert_player_id(player_id, "assign random id")?;
         self.assigns.push(Assign {
             random_id,
-            player_addr: player_addr.into(),
+            player_id,
             indexes,
-        })
+        });
+        Ok(())
     }
 
     /// Reveal some random items to the public.
@@ -217,13 +300,12 @@ impl Effect {
     }
 
     /// Ask a player for a decision, return the new decision id.
-    pub fn ask<S: Into<String>>(&mut self, player_addr: S) -> DecisionId {
-        self.asks.push(Ask {
-            player_addr: player_addr.into(),
-        });
+    pub fn ask(&mut self, player_id: u64) -> Result<DecisionId> {
+        self.assert_player_id(player_id, "ask decision")?;
+        self.asks.push(Ask { player_id });
         let decision_id = self.curr_decision_id;
         self.curr_decision_id += 1;
-        decision_id
+        Ok(decision_id)
     }
 
     pub fn release(&mut self, decision_id: DecisionId) {
@@ -231,11 +313,10 @@ impl Effect {
     }
 
     /// Dispatch action timeout event for a player after certain milliseconds.
-    pub fn action_timeout<S: Into<String>>(&mut self, player_addr: S, timeout: u64) {
-        self.action_timeout = Some(ActionTimeout {
-            player_addr: player_addr.into(),
-            timeout,
-        });
+    pub fn action_timeout(&mut self, player_id: u64, timeout: u64) -> Result<()> {
+        self.assert_player_id(player_id, "set action timeout")?;
+        self.action_timeout = Some(ActionTimeout { player_id, timeout });
+        Ok(())
     }
 
     /// Return current timestamp.
@@ -246,6 +327,11 @@ impl Effect {
         self.timestamp
     }
 
+    /// Cancel current dispatched event.
+    pub fn cancel_dispatch(&mut self) {
+        self.cancel_dispatch = true;
+    }
+
     /// Dispatch waiting timeout event after certain milliseconds.
     pub fn wait_timeout(&mut self, timeout: u64) {
         self.wait_timeout = Some(timeout);
@@ -266,21 +352,60 @@ impl Effect {
         self.allow_exit = allow_exit
     }
 
-
+    /// Set current state as the checkpoint.
     pub fn checkpoint(&mut self) {
         self.is_checkpoint = true;
     }
 
+    pub fn is_checkpoint(&self) -> bool {
+        self.is_checkpoint
+    }
+
     /// Submit settlements.
-    pub fn settle(&mut self, settle: Settle) {
+    /// This will set current state as checkpoint automatically.
+    pub fn settle(&mut self, settle: Settle) -> Result<()> {
+        self.checkpoint();
+        self.assert_player_id(settle.id, "create settle")?;
         self.settles.push(settle);
+        Ok(())
     }
 
     /// Transfer the assets to a recipient slot
+    /// This will set current state as checkpoint automatically.
     pub fn transfer(&mut self, slot_id: u8, amount: u64) {
+        self.checkpoint();
         self.transfers.push(Transfer { slot_id, amount });
     }
 
+    /// Launch sub game
+    pub fn launch_sub_game<D: BorshSerialize>(
+        &mut self,
+        id: usize,
+        bundle_addr: String,
+        max_players: u16,
+        players: Vec<GamePlayer>,
+        init_data: D,
+    ) -> Result<()> {
+        for p in players.iter() {
+            self.assert_player_id(p.id, "launch sub game")?;
+        }
+
+        self.launch_sub_games.push(SubGame {
+            id,
+            bundle_addr,
+            init_account: InitAccount {
+                max_players,
+                entry_type: crate::types::EntryType::Disabled,
+                players,
+                data: borsh::to_vec(&init_data)?,
+                // The checkpoint is always None
+                // It represents no checkpoint or we should use the existing one
+                checkpoint: None,
+            },
+        });
+        Ok(())
+    }
+
     /// Get handler state.
     ///
     /// This is an internal function, DO NOT use in game handler.
@@ -295,32 +420,13 @@ impl Effect {
     ///
     /// This is an internal function, DO NOT use in game handler.
     pub fn __set_handler_state<S: BorshSerialize>(&mut self, handler_state: S) {
-        if let Ok(state) = handler_state.try_to_vec() {
+        if let Ok(state) = borsh::to_vec(&handler_state) {
             self.handler_state = Some(state);
         } else {
             self.error = Some(HandleError::SerializationError);
         }
     }
 
-    /// Set checkpoint.
-    ///
-    /// This is an internal function, DO NOT use in game handler.
-    pub fn __set_checkpoint<S: BorshSerialize>(&mut self, checkpoint_state: S) {
-        if let Ok(state) = checkpoint_state.try_to_vec() {
-            self.checkpoint = Some(state);
-        } else {
-            self.error = Some(HandleError::SerializationError);
-        }
-    }
-
-    pub fn __set_checkpoint_raw(&mut self, raw: Vec<u8>) {
-        self.checkpoint = Some(raw);
-    }
-
-    pub fn __checkpoint(&mut self) -> Option<Vec<u8>> {
-        self.checkpoint.take()
-    }
-
     /// Set error.
     ///
     /// This is an internal function, DO NOT use in game handler.
@@ -334,6 +440,25 @@ impl Effect {
     pub fn __take_error(&mut self) -> Option<HandleError> {
         self.error.take()
     }
+
+    /// Emit a bridge event.
+    pub fn bridge_event<E: BridgeEvent>(
+        &mut self,
+        dest: usize,
+        evt: E,
+        join_players: Vec<GamePlayer>,
+    ) -> Result<()> {
+        for p in join_players.iter() {
+            self.assert_player_id(p.id, "emit bridge event")?;
+        }
+        if self.bridge_events.iter().any(|x| x.dest == dest) {
+            return Err(Error::DuplicatedBridgeEventTarget);
+        }
+
+        self.bridge_events
+            .push(EmitBridgeEvent::try_new(dest, evt, join_players)?);
+        Ok(())
+    }
 }
 
 #[cfg(test)]
@@ -341,13 +466,6 @@ mod tests {
 
     use super::*;
 
-    #[test]
-    fn abc() {
-        let data = vec![0,0,0,0,0,195,133,107,4,139,1,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,2,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,103,0,0,0,0,0,0,0,0,0,0,0,16,39,0,0,0,0,0,0,32,78,0,0,0,0,0,0,32,78,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,1,0,43,0,0,0,70,97,105,108,101,100,32,116,111,32,102,105,110,100,32,97,32,112,108,97,121,101,114,32,102,111,114,32,116,104,101,32,110,101,120,116,32,98,117,116,116,111,110,1,0,0,0,0];
-        let effect = Effect::try_from_slice(&data);
-        println!("{:?}", effect);
-    }
-
     #[test]
     fn test_serialization() -> anyhow::Result<()> {
         let mut answered = HashMap::new();
@@ -361,8 +479,9 @@ mod tests {
         }
 
         let effect = Effect {
+            is_init: false,
             action_timeout: Some(ActionTimeout {
-                player_addr: "alice".into(),
+                player_id: 0,
                 timeout: 100,
             }),
             wait_timeout: Some(200),
@@ -372,13 +491,10 @@ mod tests {
             timestamp: 300_000,
             curr_random_id: 1,
             curr_decision_id: 1,
-            players_count: 4,
-            servers_count: 4,
-            asks: vec![Ask {
-                player_addr: "bob".into(),
-            }],
+            nodes_count: 4,
+            asks: vec![Ask { player_id: 1 }],
             assigns: vec![Assign {
-                player_addr: "bob".into(),
+                player_id: 1,
                 random_id: 5,
                 indexes: vec![0, 1, 2],
             }],
@@ -390,15 +506,17 @@ mod tests {
             init_random_states: vec![RandomSpec::shuffled_list(vec!["a".into(), "b".into()])],
             revealed,
             answered,
-            settles: vec![Settle::add("alice", 200), Settle::sub("bob", 200)],
+            settles: vec![Settle::add(0, 200), Settle::sub(1, 200)],
             handler_state: Some(vec![1, 2, 3, 4]),
             error: Some(HandleError::NoEnoughPlayers),
             allow_exit: true,
             transfers: vec![],
             is_checkpoint: false,
-            checkpoint: None,
+            launch_sub_games: vec![],
+            bridge_events: vec![],
+            valid_players: vec![],
         };
-        let bs = effect.try_to_vec()?;
+        let bs = borsh::to_vec(&effect)?;
 
         let parsed = Effect::try_from_slice(&bs)?;
 
diff --git a/api/src/engine.rs b/api/src/engine.rs
index 6b9747a2..55b6ca6e 100644
--- a/api/src/engine.rs
+++ b/api/src/engine.rs
@@ -1,90 +1,12 @@
 use borsh::{BorshDeserialize, BorshSerialize};
 
-use crate::{
-    effect::Effect,
-    error::{HandleError, HandleResult},
-    event::Event,
-    prelude::ServerJoin,
-    types::PlayerJoin,
-};
-
-/// A subset of on-chain account, used for game handler
-/// initialization.  The `access_version` may refer to an old state
-/// when the game is started by transactor.
-#[derive(Debug, Clone, BorshSerialize, BorshDeserialize)]
-pub struct InitAccount {
-    pub addr: String,
-    pub players: Vec<PlayerJoin>,
-    pub servers: Vec<ServerJoin>,
-    pub data: Vec<u8>,
-    pub access_version: u64,
-    pub settle_version: u64,
-    pub max_players: u16,
-    pub checkpoint: Vec<u8>,
-}
-
-impl InitAccount {
-    pub fn data<S: BorshDeserialize>(&self) -> Result<S, HandleError> {
-        S::try_from_slice(&self.data).or(Err(HandleError::MalformedGameAccountData))
-    }
-
-    pub fn checkpoint<S: BorshDeserialize>(&self) -> Result<Option<S>, HandleError> {
-        if self.checkpoint.is_empty() {
-            Ok(None)
-        } else {
-            S::try_from_slice(&self.checkpoint).or(Err(HandleError::MalformedCheckpointData)).map(Some)
-        }
-    }
-
-    /// Add a new player.  This function is only available in tests.
-    /// This function will panic when a duplicated position is
-    /// specified.
-    pub fn add_player<S: Into<String>>(
-        &mut self,
-        addr: S,
-        position: usize,
-        balance: u64,
-        verify_key: String,
-    ) {
-        self.access_version += 1;
-        let access_version = self.access_version;
-        if self.players.iter().any(|p| p.position as usize == position) {
-            panic!("Failed to add player, duplicated position");
-        }
-        self.players.push(PlayerJoin {
-            position: position as _,
-            balance,
-            addr: addr.into(),
-            access_version,
-            verify_key,
-        })
-    }
-}
-
-impl Default for InitAccount {
-    fn default() -> Self {
-        Self {
-            addr: "".into(),
-            players: Vec::new(),
-            servers: Vec::new(),
-            data: Vec::new(),
-            access_version: 0,
-            settle_version: 0,
-            max_players: 10,
-            checkpoint: Vec::new(),
-        }
-    }
-}
+use crate::{effect::Effect, error::HandleResult, event::Event, init_account::InitAccount};
 
 pub trait GameHandler: Sized + BorshSerialize + BorshDeserialize {
-    type Checkpoint: BorshSerialize + BorshDeserialize;
-
-    /// Initialize handler state with on-chain game account data.
+    /// Initialize handler state with on-chain game account data.  The
+    /// initial state must be determined by the `init_account`.
     fn init_state(effect: &mut Effect, init_account: InitAccount) -> HandleResult<Self>;
 
     /// Handle event.
     fn handle_event(&mut self, effect: &mut Effect, event: Event) -> HandleResult<()>;
-
-    /// Create checkpoint from current state.
-    fn into_checkpoint(self) -> HandleResult<Self::Checkpoint>;
 }
diff --git a/api/src/error.rs b/api/src/error.rs
index b8e50c83..20085496 100644
--- a/api/src/error.rs
+++ b/api/src/error.rs
@@ -180,6 +180,9 @@ pub enum Error {
     #[error("Not supported in validator mode")]
     NotSupportedInValidatorMode,
 
+    #[error("Not supported in sub game mode")]
+    NotSupportedInSubGameMode,
+
     #[error("Invalid voter: {0}")]
     InvalidVoter(String),
 
@@ -260,6 +263,51 @@ pub enum Error {
 
     #[error("Settle version mismatch, given: {0}, expected: {1}")]
     SettleVersionMismatch(u64, u64),
+
+    #[error("Duplicated sub game id")]
+    DuplicatedSubGameId,
+
+    #[error("Cannot map id to address: {0}")]
+    CantMapIdToAddr(u64),
+
+    #[error("Cannot map address to id: {0}")]
+    CantMapAddrToId(String),
+
+    #[error("Cannot bump settle version")]
+    CantBumpSettleVersion,
+
+    #[error("Game uninitialized")]
+    GameUninitialized,
+
+    #[error("Invalid bridge event")]
+    InvalidBridgeEvent,
+
+    #[error("Invalid player id found when {2}, id: {0}, availables: {1:?}")]
+    InvalidPlayerId(u64, Vec<u64>, String),
+
+    #[error("Invalid sub game id")]
+    InvalidSubGameId,
+
+    #[error("Duplicated bridge event target")]
+    DuplicatedBridgeEventTarget,
+
+    #[error("Missing init data")]
+    MissingInitData,
+
+    #[error("Checkpoint state sha mismatch")]
+    CheckpointStateShaMismatch,
+
+    #[error("Malformed checkpoint")]
+    MalformedCheckpoint,
+
+    #[error("Add balance error, player: {0}, origin: {1}, amount: {2}")]
+    AddBalanceError(u64, u64, u64), // player_id, from_balance, to_balance
+
+    #[error("Sub balance error, player: {0}, origin: {1}, amount: {2}")]
+    SubBalanceError(u64, u64, u64), // player_id, from_balance, to_balance
+
+    #[error("Missing Checkpoint")]
+    MissingCheckpoint,
 }
 
 #[cfg(feature = "serde")]
@@ -286,6 +334,9 @@ pub enum HandleError {
     #[error("No enough players")]
     NoEnoughPlayers,
 
+    #[error("No enough servers")]
+    NoEnoughServers,
+
     #[error("Invalid player")]
     InvalidPlayer,
 
@@ -304,11 +355,14 @@ pub enum HandleError {
     #[error("Malformed custom event")]
     MalformedCustomEvent,
 
+    #[error("Malformed bridge event")]
+    MalformedBridgeEvent,
+
     #[error("Serialization error")]
     SerializationError,
 
-    #[error("No enough servers")]
-    NoEnoughServers,
+    #[error("Cannot initialize subgame without checkpoint")]
+    SubGameWithoutCheckpoint,
 
     #[error("Internal error: {message:?}")]
     InternalError { message: String },
diff --git a/api/src/event.rs b/api/src/event.rs
index 25b0b718..e5460fb5 100644
--- a/api/src/event.rs
+++ b/api/src/event.rs
@@ -1,6 +1,6 @@
 use crate::{
     error::HandleError,
-    types::{Ciphertext, DecisionId, PlayerJoin, RandomId, SecretDigest, SecretShare, ServerJoin},
+    types::{Ciphertext, DecisionId, GamePlayer, RandomId, SecretDigest, SecretShare},
 };
 use borsh::{BorshDeserialize, BorshSerialize};
 #[cfg(feature = "serde")]
@@ -27,7 +27,7 @@ pub enum Event {
     /// parts is the serialized data from a custom game event which
     /// satisfies [`CustomEvent`].
     Custom {
-        sender: String,
+        sender: u64,
         raw: Vec<u8>,
     },
 
@@ -38,18 +38,18 @@ pub enum Event {
     /// Transactor shares its secert to specific player.
     /// The `secret_data` is encrypted with the receiver's public key.
     ShareSecrets {
-        sender: String,
+        sender: u64,
         shares: Vec<SecretShare>,
     },
 
     OperationTimeout {
-        addrs: Vec<String>,
+        ids: Vec<u64>,
     },
 
     /// Randomize items.
     /// This event is sent by transactors.
     Mask {
-        sender: String,
+        sender: u64,
         random_id: RandomId,
         ciphertexts: Vec<Ciphertext>,
     },
@@ -57,7 +57,7 @@ pub enum Event {
     /// Lock items.
     /// This event is sent by transactors.
     Lock {
-        sender: String,
+        sender: u64,
         random_id: RandomId,
         ciphertexts_and_digests: Vec<(Ciphertext, SecretDigest)>,
     },
@@ -68,14 +68,9 @@ pub enum Event {
         random_id: RandomId,
     },
 
-    /// Sync with on-chain account.  New players/servers will be added frist to
-    /// game context and then to game handler (WASM).
-    /// This event is sent by transactor based on the diff of the account states.
-    Sync {
-        new_players: Vec<PlayerJoin>,
-        new_servers: Vec<ServerJoin>,
-        transactor_addr: String,
-        access_version: u64,
+    /// This event is sent when new players joined game.
+    Join {
+        players: Vec<GamePlayer>,
     },
 
     /// A server left the game.
@@ -83,28 +78,24 @@ pub enum Event {
     ///
     /// NOTE: This event must be handled idempotently.
     ServerLeave {
-        server_addr: String,
-        transactor_addr: String,
+        server_id: u64,
     },
 
     /// Client left game
     /// This event is sent by transactor based on client's connection status.
     Leave {
-        player_addr: String,
+        player_id: u64,
     },
 
     /// Transactor uses this event as the start for each game.
-    /// The `access_version` can be used to filter out which players are included.
-    GameStart {
-        access_version: u64,
-    },
+    GameStart,
 
     /// Timeout when waiting for start
     WaitingTimeout,
 
     /// Random drawer takes random items by indexes.
     DrawRandomItems {
-        sender: String,
+        sender: u64,
         random_id: usize,
         indexes: Vec<usize>,
     },
@@ -115,12 +106,12 @@ pub enum Event {
     /// Timeout when waiting for player's action
     /// Sent by transactor.
     ActionTimeout {
-        player_addr: String,
+        player_id: u64,
     },
 
     /// Answer the decision question with encrypted ciphertext
     AnswerDecision {
-        sender: String,
+        sender: u64,
         decision_id: DecisionId,
         ciphertext: Ciphertext,
         digest: SecretDigest,
@@ -133,12 +124,36 @@ pub enum Event {
 
     /// Shutdown
     Shutdown,
+
+    /// The custom event from bridge
+    Bridge {
+        dest: usize,
+        raw: Vec<u8>,
+        join_players: Vec<GamePlayer>,
+    },
 }
 
 impl std::fmt::Display for Event {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             Event::Custom { sender, raw } => write!(f, "Custom from {}, inner: {:?}", sender, raw),
+            Event::Bridge {
+                dest,
+                raw,
+                join_players,
+            } => {
+                let players = join_players
+                    .iter()
+                    .map(|p| p.id.to_string())
+                    .collect::<Vec<String>>()
+                    .join(",");
+
+                write!(
+                    f,
+                    "Bridge to {}, inner: [{}...], join_players: [{}]",
+                    dest, raw[0], players
+                )
+            }
             Event::Ready => write!(f, "Ready"),
             Event::ShareSecrets { sender, shares } => {
                 let repr = shares
@@ -157,32 +172,18 @@ impl std::fmt::Display for Event {
             Event::RandomnessReady { random_id } => {
                 write!(f, "RandomnessReady, random_id: {}", random_id)
             }
-            Event::Sync {
-                new_players,
-                new_servers,
-                access_version,
-                ..
-            } => {
-                let players = new_players
+            Event::Join { players } => {
+                let players = players
                     .iter()
-                    .map(|p| p.addr.as_str())
-                    .collect::<Vec<&str>>()
+                    .map(|p| p.id.to_string())
+                    .collect::<Vec<String>>()
                     .join(",");
-                let servers = new_servers
-                    .iter()
-                    .map(|s| s.addr.as_str())
-                    .collect::<Vec<&str>>()
-                    .join(", ");
 
-                write!(
-                    f,
-                    "Sync, new_players: [{}], new_servers: [{}], access_version = {}",
-                    players, servers, access_version
-                )
+                write!(f, "Join, players: [{}]", players)
             }
-            Event::Leave { player_addr } => write!(f, "Leave from {}", player_addr),
-            Event::GameStart { access_version } => {
-                write!(f, "GameStart, access_version = {}", access_version)
+            Event::Leave { player_id } => write!(f, "Leave from {}", player_id),
+            Event::GameStart {} => {
+                write!(f, "GameStart")
             }
             Event::WaitingTimeout => write!(f, "WaitTimeout"),
             Event::DrawRandomItems {
@@ -195,23 +196,16 @@ impl std::fmt::Display for Event {
                 sender, random_id, indexes
             ),
             Event::DrawTimeout => write!(f, "DrawTimeout"),
-            Event::ActionTimeout { player_addr } => write!(f, "ActionTimeout for {}", player_addr),
+            Event::ActionTimeout { player_id } => write!(f, "ActionTimeout for {}", player_id),
             Event::SecretsReady { random_ids } => {
                 write!(f, "SecretsReady for {:?}", random_ids)
             }
-            Event::ServerLeave {
-                server_addr,
-                transactor_addr,
-            } => write!(
-                f,
-                "ServerLeave {}, current transactor: {}",
-                server_addr, transactor_addr
-            ),
+            Event::ServerLeave { server_id } => write!(f, "ServerLeave {}", server_id),
             Event::AnswerDecision { decision_id, .. } => {
                 write!(f, "AnswerDecision for {}", decision_id)
             }
-            Event::OperationTimeout { addrs } => {
-                write!(f, "OperationTimeout for {:?}", addrs)
+            Event::OperationTimeout { ids } => {
+                write!(f, "OperationTimeout for {:?}", ids)
             }
             Event::Shutdown => {
                 write!(f, "Shutdown")
@@ -221,10 +215,18 @@ impl std::fmt::Display for Event {
 }
 
 impl Event {
-    pub fn custom<S: Into<String>, E: CustomEvent>(sender: S, e: &E) -> Self {
+    pub fn custom<E: CustomEvent>(sender: u64, e: &E) -> Self {
         Self::Custom {
-            sender: sender.into(),
-            raw: e.try_to_vec().unwrap(),
+            sender,
+            raw: borsh::to_vec(&e).unwrap(),
+        }
+    }
+
+    pub fn bridge<E: BridgeEvent>(dest: usize, e: &E, join_players: Vec<GamePlayer>) -> Self {
+        Self::Bridge {
+            dest,
+            raw: borsh::to_vec(&e).unwrap(),
+            join_players,
         }
     }
 }
@@ -234,3 +236,9 @@ pub trait CustomEvent: Sized + BorshSerialize + BorshDeserialize {
         Self::try_from_slice(slice).or(Err(HandleError::MalformedCustomEvent))
     }
 }
+
+pub trait BridgeEvent: Sized + BorshSerialize + BorshDeserialize {
+    fn try_parse(slice: &[u8]) -> Result<Self, HandleError> {
+        Self::try_from_slice(slice).or(Err(HandleError::MalformedBridgeEvent))
+    }
+}
diff --git a/api/src/init_account.rs b/api/src/init_account.rs
new file mode 100644
index 00000000..2b60910f
--- /dev/null
+++ b/api/src/init_account.rs
@@ -0,0 +1,56 @@
+use borsh::{BorshDeserialize, BorshSerialize};
+
+use crate::{
+    error::{HandleError, HandleResult},
+    types::{EntryType, GamePlayer},
+};
+
+/// A set of arguments for game handler initialization.
+#[derive(Debug, Clone, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
+pub struct InitAccount {
+    pub max_players: u16,
+    pub entry_type: EntryType,
+    pub players: Vec<GamePlayer>,
+    pub data: Vec<u8>,
+    pub checkpoint: Option<Vec<u8>>,
+}
+
+impl InitAccount {
+    pub fn data<S: BorshDeserialize>(&self) -> Result<S, HandleError> {
+        S::try_from_slice(&self.data).or(Err(HandleError::MalformedGameAccountData))
+    }
+
+    /// Add a new player.  This function is only available in tests.
+    /// This function will panic when a duplicated position is
+    /// specified.
+    pub fn add_player(&mut self, id: u64, position: usize, balance: u64) {
+        if self.players.iter().any(|p| p.position as usize == position) {
+            panic!("Failed to add player, duplicated position");
+        }
+        self.players.push(GamePlayer {
+            position: position as _,
+            balance,
+            id,
+        })
+    }
+
+    /// Get deserialized checkpoint, return None if not available.
+    pub fn checkpoint<T: BorshDeserialize>(&self) -> HandleResult<Option<T>> {
+        self.checkpoint
+            .as_ref()
+            .map(|c| T::try_from_slice(c).map_err(|_| HandleError::MalformedCheckpointData))
+            .transpose()
+    }
+}
+
+impl Default for InitAccount {
+    fn default() -> Self {
+        Self {
+            max_players: 0,
+            entry_type: EntryType::Disabled,
+            players: Vec::new(),
+            data: Vec::new(),
+            checkpoint: None,
+        }
+    }
+}
diff --git a/api/src/lib.rs b/api/src/lib.rs
index 9f828249..c5c80de1 100644
--- a/api/src/lib.rs
+++ b/api/src/lib.rs
@@ -5,6 +5,7 @@
 
 pub mod decision;
 pub mod effect;
+pub mod init_account;
 pub mod engine;
 pub mod error;
 pub mod event;
diff --git a/api/src/prelude.rs b/api/src/prelude.rs
index 10262eef..3552cd04 100644
--- a/api/src/prelude.rs
+++ b/api/src/prelude.rs
@@ -1,7 +1,8 @@
-pub use crate::effect::Effect;
-pub use crate::engine::{GameHandler, InitAccount};
+pub use crate::effect::{Effect, SubGame};
+pub use crate::init_account::InitAccount;
+pub use crate::engine::GameHandler;
 pub use crate::error::{HandleError, HandleResult};
-pub use crate::event::{CustomEvent, Event};
+pub use crate::event::{CustomEvent, Event, BridgeEvent};
 pub use crate::random::{RandomStatus, RandomSpec};
-pub use crate::types::{Addr, Amount, DecisionId, PlayerJoin, RandomId, ServerJoin, Settle, GameStatus};
+pub use crate::types::{Addr, Amount, DecisionId, PlayerJoin, RandomId, ServerJoin, Settle, GameStatus, GamePlayer};
 pub use borsh::{BorshDeserialize, BorshSerialize};
diff --git a/api/src/random.rs b/api/src/random.rs
index 12b12f2d..7342edef 100644
--- a/api/src/random.rs
+++ b/api/src/random.rs
@@ -59,6 +59,9 @@ pub enum Error {
     #[error("No enough servers")]
     NoEnoughServer,
 
+    #[error("No server")]
+    NoServer,
+
     #[error("Invalid reveal operation")]
     InvalidRevealOperation,
 
@@ -343,7 +346,7 @@ impl RandomState {
         let status = if let Some(owner) = owners.first() {
             RandomStatus::Masking(owner.clone())
         } else {
-            return Err(Error::NoEnoughServer);
+            return Err(Error::NoServer);
         };
 
         Ok(Self {
@@ -719,7 +722,7 @@ mod tests {
     #[test]
     fn test_mask_serialize() {
         let mask = Mask::new("hello");
-        let encoded = mask.try_to_vec().unwrap();
+        let encoded = borsh::to_vec(&mask).unwrap();
         let decoded = Mask::try_from_slice(&encoded).unwrap();
         assert_eq!(mask, decoded);
     }
diff --git a/api/src/types.rs b/api/src/types.rs
index e5429ff0..2f8e08b5 100644
--- a/api/src/types.rs
+++ b/api/src/types.rs
@@ -1,8 +1,8 @@
 mod common;
 
 pub use common::{
-    Addr, Amount, Ciphertext, DecisionId, EntryType, GameStatus, PlayerDeposit, PlayerJoin,
-    RandomId, RecipientSlot, RecipientSlotOwner, RecipientSlotShare, RecipientSlotType,
+    Addr, Amount, Ciphertext, DecisionId, EntryType, GamePlayer, GameStatus, PlayerDeposit,
+    PlayerJoin, RandomId, RecipientSlot, RecipientSlotOwner, RecipientSlotShare, RecipientSlotType,
     SecretDigest, SecretIdent, SecretKey, SecretShare, ServerJoin, Settle, SettleOp, Signature,
-    Transfer, VoteType,
+    Transfer, VoteType
 };
diff --git a/api/src/types/common.rs b/api/src/types/common.rs
index 4da05376..49f69b3d 100644
--- a/api/src/types/common.rs
+++ b/api/src/types/common.rs
@@ -16,32 +16,32 @@ pub enum SettleOp {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct Settle {
-    pub addr: String,
+    pub id: u64,
     pub op: SettleOp,
 }
 
 impl Settle {
-    pub fn add<S: Into<String>>(addr: S, amount: u64) -> Self {
+    pub fn add(id: u64, amount: u64) -> Self {
         Self {
-            addr: addr.into(),
+            id,
             op: SettleOp::Add(amount),
         }
     }
-    pub fn sub<S: Into<String>>(addr: S, amount: u64) -> Self {
+    pub fn sub(id: u64, amount: u64) -> Self {
         Self {
-            addr: addr.into(),
+            id,
             op: SettleOp::Sub(amount),
         }
     }
-    pub fn eject<S: Into<String>>(addr: S) -> Self {
+    pub fn eject(id: u64) -> Self {
         Self {
-            addr: addr.into(),
+            id,
             op: SettleOp::Eject,
         }
     }
-    pub fn assign<S: Into<String>>(addr: S, identifier: String) -> Self {
+    pub fn assign(id: u64, identifier: String) -> Self {
         Self {
-            addr: addr.into(),
+            id,
             op: SettleOp::AssignSlot(identifier),
         }
     }
@@ -242,13 +242,12 @@ pub enum EntryType {
     Cash { min_deposit: u64, max_deposit: u64 },
     /// A player can join the game by pay a ticket.
     #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-    Ticket {
-        slot_id: u8,
-        amount: u64,
-    },
+    Ticket { slot_id: u8, amount: u64 },
     /// A player can join the game by showing a gate NFT
     #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
     Gating { collection: String },
+    #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+    Disabled,
 }
 
 impl Default for EntryType {
@@ -347,7 +346,7 @@ impl ServerJoin {
 #[derive(Debug, Default, BorshSerialize, BorshDeserialize, PartialEq, Eq, Copy, Clone)]
 pub enum GameStatus {
     #[default]
-    Uninit,
+    Idle,
     Running,
     Closed,
 }
@@ -355,9 +354,38 @@ pub enum GameStatus {
 impl std::fmt::Display for GameStatus {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            GameStatus::Uninit => write!(f, "uninit"),
+            GameStatus::Idle => write!(f, "idle"),
             GameStatus::Running => write!(f, "running"),
             GameStatus::Closed => write!(f, "closed"),
         }
     }
 }
+
+#[derive(BorshSerialize, BorshDeserialize, Debug, PartialEq, Eq, Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct GamePlayer {
+    pub id: u64,
+    pub position: u16,
+    pub balance: u64,
+}
+
+impl GamePlayer {
+    pub fn new(id: u64, balance: u64, position: u16) -> Self {
+        Self {
+            id,
+            position,
+            balance,
+        }
+    }
+}
+
+impl From<PlayerJoin> for GamePlayer {
+    fn from(value: PlayerJoin) -> Self {
+        Self {
+            id: value.access_version,
+            position: value.position,
+            balance: value.balance,
+        }
+    }
+}
diff --git a/cli/src/main.rs b/cli/src/main.rs
index 203e6b27..63e6f1d0 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -9,10 +9,17 @@ use race_core::{
     },
 };
 use race_env::{default_keyfile, parse_with_default_rpc};
-use race_storage::{arweave::Arweave, metadata::{make_metadata, MetadataT}};
+use race_storage::{
+    arweave::Arweave,
+    metadata::{make_metadata, MetadataT},
+};
 use race_transport::TransportBuilder;
 use serde::{Deserialize, Serialize};
-use std::{fs::{File, self}, path::PathBuf, sync::Arc};
+use tracing::level_filters::LevelFilter;
+use std::{
+    fs::{self, File}, path::PathBuf, sync::Arc
+};
+use tracing_subscriber::{layer::SubscriberExt, EnvFilter};
 
 #[derive(Debug, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -66,6 +73,14 @@ fn cli() -> Command {
                 .arg(arg!(<BUNDLE> "The file path to game bundle"))
                 .arg_required_else_help(true),
         )
+        .subcommand(
+            Command::new("mint-nft")
+                .about("Mint NFT with an Arweave URL")
+                .arg(arg!(<NAME> "The name of game"))
+                .arg(arg!(<SYMBOL> "The symbol used for game metadata file"))
+                .arg(arg!(<ARWEAVE_URL> "The Arweave URL"))
+                .arg_required_else_help(true),
+        )
         .subcommand(
             Command::new("bundle-info")
                 .about("Query game bundle information")
@@ -97,12 +112,25 @@ fn cli() -> Command {
                 .arg(arg!(<SPEC_FILE> "The path to specification file"))
                 .arg_required_else_help(true),
         )
+        .subcommand(
+            Command::new("reg-game")
+                .about("Register game account")
+                .arg(arg!(<REG> "The address of registration account"))
+                .arg(arg!(<GAME> "The address of game account"))
+                .arg_required_else_help(true),
+        )
         .subcommand(
             Command::new("close-game")
                 .about("Close game account")
                 .arg(arg!(<GAME> "The address of game account"))
                 .arg_required_else_help(true),
         )
+        .subcommand(
+            Command::new("close-all-games")
+                .about("Unregister and close all games for a registration")
+                .arg(arg!(<REG> "The address of registration account"))
+                .arg_required_else_help(true),
+        )
         .subcommand(
             Command::new("unreg-game")
                 .about("Unregister game account")
@@ -145,6 +173,21 @@ async fn create_transport(chain: &str, rpc: &str, keyfile: Option<String>) -> Ar
     Arc::from(transport)
 }
 
+async fn mint_nft(
+    name: String,
+    symbol: String,
+    arweave_url: String,
+    transport: Arc<dyn TransportT>,
+) {
+    let params = PublishGameParams {
+        uri: arweave_url,
+        name,
+        symbol,
+    };
+    let resp = transport.publish_game(params).await.expect("RPC error");
+    println!("Address: {}", &resp);
+}
+
 async fn publish(
     chain: &str,
     name: String,
@@ -156,10 +199,23 @@ async fn publish(
 ) {
     let mut arweave = Arweave::try_new(&arkey_path).expect("Creating arweave failed");
     let data = fs::read(PathBuf::from(&bundle)).expect("Wasm bundle not found");
-    let bundle_addr = arweave.upload_file(data, None).await.expect("Arweave uploading wasm bundle failed");
-    let metadata = make_metadata(chain, name.clone(), symbol.clone(), creator_addr, bundle_addr.clone()).expect("Creating metadata failed");
+    let bundle_addr = arweave
+        .upload_file(data, None)
+        .await
+        .expect("Arweave uploading wasm bundle failed");
+    let metadata = make_metadata(
+        chain,
+        name.clone(),
+        symbol.clone(),
+        creator_addr,
+        bundle_addr.clone(),
+    )
+    .expect("Creating metadata failed");
     let json_meta = metadata.json_vec().expect("Jsonify metadata failed");
-    let meta_addr = arweave.upload_file(json_meta, Some("application/json")).await.expect("Arweave uploading metadata failed");
+    let meta_addr = arweave
+        .upload_file(json_meta, Some("application/json"))
+        .await
+        .expect("Arweave uploading metadata failed");
 
     let params = PublishGameParams {
         uri: meta_addr,
@@ -198,12 +254,16 @@ async fn bundle_info(addr: &str, transport: Arc<dyn TransportT>) {
     }
 }
 
+#[allow(unused)]
 fn print_hex(data: Vec<u8>) {
     let mut row = vec![];
     for i in data {
         row.push(format!("{:02x}", i));
     }
-    let rows = row.chunks(8).map(|rows| rows.join(" ")).collect::<Vec<String>>();
+    let rows = row
+        .chunks(8)
+        .map(|rows| rows.join(" "))
+        .collect::<Vec<String>>();
     for row in rows {
         println!("{}", row)
     }
@@ -247,8 +307,14 @@ async fn game_info(addr: &str, transport: Arc<dyn TransportT>) {
                 println!("Vote from {} to {} for {:?}", v.voter, v.votee, v.vote_type);
             }
             println!("Current transactor: {:?}", game_account.transactor_addr);
-            println!("Checkpoint:");
-            print_hex(game_account.checkpoint);
+            if let Some(cp) = game_account.checkpoint_on_chain.as_ref() {
+                println!("Checkpoint");
+                println!("  Access Version: {}", cp.access_version);
+                let root: String = cp.root.iter().map(|b| format!("{:02x}", b)).collect();
+                println!("  Root: {}", root);
+            } else {
+                println!("Checkpoint: None");
+            }
         }
         None => {
             println!("Game account not found");
@@ -425,9 +491,45 @@ async fn close_game(game_addr: String, transport: Arc<dyn TransportT>) {
     }
 }
 
+async fn reg_game(reg_addr: String, game_addr: String, transport: Arc<dyn TransportT>) {
+    println!("Register game {} from registration {}", game_addr, reg_addr);
+    let r = transport
+        .register_game(RegisterGameParams {
+            game_addr: game_addr.to_owned(),
+            reg_addr: reg_addr.to_owned(),
+        })
+        .await;
+    if let Err(e) = r {
+        println!("Failed to register game due to: {}", e.to_string());
+    } else {
+        println!("Game registered");
+    }
+}
+
+async fn close_all_games(reg_addr: String, transport: Arc<dyn TransportT>) {
+    println!(
+        "Unregister and close all games from registration {}",
+        reg_addr
+    );
+    let reg = transport
+        .get_registration(&reg_addr)
+        .await
+        .expect("Failed to load registration account");
+    match reg {
+        Some(reg) => {
+            for g in reg.games {
+                unreg_game(reg_addr.clone(), g.addr, transport.clone()).await;
+            }
+        }
+        None => {
+            println!("Registration account {} not found", reg_addr);
+        }
+    }
+}
+
 async fn unreg_game(reg_addr: String, game_addr: String, transport: Arc<dyn TransportT>) {
     println!(
-        "Unregister game {} from registration {}",
+        "Unregister and close game {} from registration {}",
         game_addr, reg_addr
     );
     let r = transport
@@ -446,7 +548,16 @@ async fn unreg_game(reg_addr: String, game_addr: String, transport: Arc<dyn Tran
 
 #[tokio::main]
 async fn main() {
-    tracing_subscriber::fmt::init();
+    let subscriber = tracing_subscriber::registry()
+        .with(tracing_subscriber::fmt::layer())
+        .with(
+            EnvFilter::builder()
+                .with_default_directive(LevelFilter::INFO.into())
+                .try_from_env()
+                .expect("Failed to parse EnvFilter"),
+        );
+    tracing::subscriber::set_global_default(subscriber).expect("Failed to configure logger");
+
     let matches = cli().get_matches();
 
     let chain = matches.get_one::<String>("chain").expect("required");
@@ -456,6 +567,7 @@ async fn main() {
 
     println!("Interact with chain: {:?}", chain);
     println!("RPC Endpoint: {:?}", rpc);
+    println!("Specified keyfile: {:?}", keyfile);
 
     match matches.subcommand() {
         Some(("publish", sub_matches)) => {
@@ -471,7 +583,24 @@ async fn main() {
                 symbol.to_owned(),
                 creator.to_owned(),
                 bundle.to_owned(),
-                arweave_keyfile.expect("Arweave keyfile is required").to_owned(),
+                arweave_keyfile
+                    .expect("Arweave keyfile is required")
+                    .to_owned(),
+                transport,
+            )
+            .await;
+        }
+        Some(("mint-nft", sub_matches)) => {
+            let name = sub_matches.get_one::<String>("NAME").expect("required");
+            let symbol = sub_matches.get_one::<String>("SYMBOL").expect("required");
+            let arweave_url = sub_matches
+                .get_one::<String>("ARWEAVE_URL")
+                .expect("required");
+            let transport = create_transport(&chain, &rpc, None).await;
+            mint_nft(
+                name.to_owned(),
+                symbol.to_owned(),
+                arweave_url.to_owned(),
                 transport,
             )
             .await;
@@ -503,12 +632,23 @@ async fn main() {
             let transport = create_transport(&chain, &rpc, keyfile.cloned()).await;
             create_game(specs, transport).await;
         }
+        Some(("reg-game", sub_matches)) => {
+            let reg_addr = sub_matches.get_one::<String>("REG").expect("required");
+            let game_addr = sub_matches.get_one::<String>("GAME").expect("required");
+            let transport = create_transport(&chain, &rpc, keyfile.cloned()).await;
+            reg_game(reg_addr.clone(), game_addr.clone(), transport).await;
+        }
         Some(("unreg-game", sub_matches)) => {
             let reg_addr = sub_matches.get_one::<String>("REG").expect("required");
             let game_addr = sub_matches.get_one::<String>("GAME").expect("required");
             let transport = create_transport(&chain, &rpc, keyfile.cloned()).await;
             unreg_game(reg_addr.clone(), game_addr.clone(), transport).await;
         }
+        Some(("close-all-games", sub_matches)) => {
+            let reg_addr = sub_matches.get_one::<String>("REG").expect("required");
+            let transport = create_transport(&chain, &rpc, keyfile.cloned()).await;
+            close_all_games(reg_addr.clone(), transport).await;
+        }
         Some(("close-game", sub_matches)) => {
             let game_addr = sub_matches.get_one::<String>("GAME").expect("required");
             let transport = create_transport(&chain, &rpc, keyfile.cloned()).await;
diff --git a/client/src/lib.rs b/client/src/lib.rs
index 7283bde5..7b69c861 100644
--- a/client/src/lib.rs
+++ b/client/src/lib.rs
@@ -4,7 +4,7 @@ use std::{
 };
 
 use race_api::error::{Error, Result};
-use race_api::event::{CustomEvent, Event};
+use race_api::event::Event;
 use race_api::random::{RandomState, RandomStatus};
 use race_api::types::SecretShare;
 
@@ -71,6 +71,7 @@ pub struct Client {
     pub mode: ClientMode,
     pub op_hist: BTreeSet<OpIdent>,
     pub secret_state: SecretState,
+    pub id: u64,
 }
 
 impl Client {
@@ -91,6 +92,7 @@ impl Client {
             transport,
             encryptor,
             connection,
+            id: 0,
         }
     }
 
@@ -113,12 +115,12 @@ impl Client {
             .await
     }
 
-    pub async fn submit_custom_event<S: CustomEvent>(&self, custom_event: S) -> Result<()> {
-        let event = Event::custom(&self.game_addr, &custom_event);
-        self.connection
-            .submit_event(&self.addr, SubmitEventParams { event })
-            .await
-    }
+    // pub async fn submit_custom_event<S: CustomEvent>(&self, custom_event: S) -> Result<()> {
+    //     let event = Event::custom(&self.game_addr, &custom_event);
+    //     self.connection
+    //         .submit_event(&self.addr, SubmitEventParams { event })
+    //         .await
+    // }
 
     pub fn load_random_states(&mut self, game_context: &GameContext) -> Result<()> {
         for random_state in game_context.list_random_states().iter() {
@@ -133,7 +135,7 @@ impl Client {
     pub fn answer_event(&mut self, decision_id: DecisionId, value: String) -> Result<Event> {
         let (ciphertext, digest) = self.secret_state.encrypt_answer(decision_id, value)?;
         Ok(Event::AnswerDecision {
-            sender: self.addr.clone(),
+            sender: self.id,
             decision_id,
             ciphertext,
             digest,
@@ -169,7 +171,7 @@ impl Client {
             Ok(vec![])
         } else {
             Ok(vec![Event::ShareSecrets {
-                sender: self.addr.clone(),
+                sender: self.id,
                 shares,
             }])
         }
@@ -220,7 +222,7 @@ impl Client {
             Ok(None)
         } else {
             let event = Event::ShareSecrets {
-                sender: self.addr.clone(),
+                sender: self.id,
                 shares,
             };
             self.op_hist.extend(op_hist);
@@ -251,7 +253,7 @@ impl Client {
         self.encryptor.shuffle(&mut masked);
 
         let event = Event::Mask {
-            sender: self.addr.clone(),
+            sender: self.id,
             random_id: random_state.id,
             ciphertexts: masked,
         };
@@ -287,7 +289,7 @@ impl Client {
             .map_err(|e| Error::RandomizationError(e.to_string()))?;
 
         let event = Event::Lock {
-            sender: self.addr.clone(),
+            sender: self.id,
             random_id: random_state.id,
             ciphertexts_and_digests: locked,
         };
@@ -329,6 +331,7 @@ impl Client {
     }
 
     pub fn handle_updated_context(&mut self, ctx: &GameContext) -> Result<Vec<Event>> {
+        self.id = ctx.addr_to_id(&self.addr)?;
         let events = match self.mode {
             ClientMode::Player => {
                 self.load_random_states(ctx)?;
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 30aa6a7b..3bc411e6 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -14,12 +14,15 @@ readme.workspace = true
 publish = true
 
 [dependencies]
+sha256 = { workspace = true }
 race-api = { workspace = true }
 async-trait = { workspace = true }
 thiserror = { workspace = true }
 serde = { workspace = true, features = ["derive"], optional = true }
 serde_json = { workspace = true, optional = true }
 borsh = { workspace = true }
+futures = { workspace = true }
+rs_merkle = { workspace = true }
 
 [dev-dependencies]
 anyhow.workspace = true
diff --git a/core/src/checkpoint.rs b/core/src/checkpoint.rs
new file mode 100644
index 00000000..ba78aab5
--- /dev/null
+++ b/core/src/checkpoint.rs
@@ -0,0 +1,225 @@
+use std::{collections::HashMap, fmt::Display};
+
+use borsh::{BorshDeserialize, BorshSerialize};
+use rs_merkle::{
+    algorithms::Sha256, proof_serializers::ReverseHashesOrder, Hasher,
+    MerkleTree,
+};
+
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+/// Checkpoint represents the state snapshot of game.
+/// It is used as a submission to the blockchain.
+#[derive(Default, Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct Checkpoint {
+    pub root: Vec<u8>,
+    pub access_version: u64,
+    pub data: HashMap<usize, VersionedData>,
+    pub proofs: HashMap<usize, Vec<u8>>,
+}
+
+#[derive(Default, Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct CheckpointOnChain {
+    pub root: Vec<u8>,
+    pub size: usize,
+    pub access_version: u64,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct CheckpointOffChain {
+    pub data: HashMap<usize, VersionedData>,
+    pub proofs: HashMap<usize, Vec<u8>>,
+}
+
+#[derive(Clone, Debug, Default, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+pub struct VersionedData {
+    pub id: usize,
+    pub version: u64,
+    pub data: Vec<u8>,
+    pub sha: Vec<u8>,
+}
+
+impl Display for Checkpoint {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let s = self
+            .data
+            .iter()
+            .map(|(id, vd)| format!("{}#{}", id, vd.version))
+            .collect::<Vec<String>>();
+        write!(f, "{}", s.join(","))
+    }
+}
+
+impl Checkpoint {
+    pub fn new(id: usize, access_version: u64, root_version: u64, root_data: Vec<u8>) -> Self {
+        let sha = Sha256::hash(&root_data);
+        let mut ret = Self {
+            root: Vec::new(),
+            access_version,
+            data: HashMap::from([(
+                id,
+                VersionedData {
+                    id,
+                    version: root_version,
+                    data: root_data,
+                    sha: sha.into(),
+                },
+            )]),
+            proofs: HashMap::new(),
+        };
+        ret.update_root_and_proofs();
+        ret
+    }
+
+    pub fn new_from_parts(offchain_part: CheckpointOffChain, onchain_part: CheckpointOnChain) -> Self {
+        Self {
+            proofs: offchain_part.proofs,
+            data: offchain_part.data,
+            access_version: onchain_part.access_version,
+            root: onchain_part.root,
+        }
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.data.is_empty()
+    }
+
+    pub fn update_root_and_proofs(&mut self) {
+        if !self.data.contains_key(&0) {
+            return;
+        }
+        let merkle_tree = self.to_merkle_tree();
+        let Some(root) = merkle_tree.root()  else {
+            // Skip root update as this is not a master checkpoint
+            return;
+        };
+        self.root = root.into();
+        let mut i = 0;
+        while self.data.contains_key(&i) {
+            let proof = merkle_tree.proof(&[i]);
+            let proof_bs = proof.serialize::<ReverseHashesOrder>();
+            self.proofs.insert(i, proof_bs);
+            i += 1;
+        }
+    }
+
+    pub fn get_data(&self, id: usize) -> Option<Vec<u8>> {
+        self.data.get(&id).map(|d| d.data.clone())
+    }
+
+    pub fn data(&self, id: usize) -> Vec<u8> {
+        self.get_data(id).unwrap_or_default()
+    }
+
+    /// Set the data of the checkpoint of game.
+    pub fn set_data(&mut self, id: usize, data: Vec<u8>) {
+        let sha = Sha256::hash(&data);
+        if let Some(old) = self.data.get_mut(&id) {
+            old.data = data;
+            old.version += 1;
+            old.sha = sha.into();
+        } else {
+            self.data.insert(id, VersionedData {
+                id,
+                version: 1,     // The first checkpoint starts with version = 1
+                data,
+                sha: sha.into(),
+            });
+        }
+        self.update_root_and_proofs();
+    }
+
+    pub fn set_access_version(&mut self, access_version: u64) {
+        self.access_version = access_version;
+    }
+
+    pub fn get_version(&self, id: usize) -> u64 {
+        self.data.get(&id).map(|d| d.version).unwrap_or(0)
+    }
+
+    pub fn get_sha(&self, id: usize) -> Option<[u8; 32]> {
+        self.data
+            .get(&id)
+            .map(|d| d.sha.clone().try_into().unwrap())
+    }
+
+    /// Get version from game with id zero.
+    pub fn version(&self) -> u64 {
+        self.data.get(&0).map(|d| d.version).unwrap_or(0)
+    }
+
+    pub fn to_merkle_tree(&self) -> MerkleTree<Sha256> {
+        println!("Build merkle tree, current checkpoint size: {}", self.data.len());
+        let mut leaves: Vec<[u8; 32]> = vec![];
+        let mut i = 0;
+        while let Some(vd) = self.data.get(&i) {
+            leaves.push(vd.sha.clone().try_into().unwrap());
+            i += 1;
+        }
+        MerkleTree::from_leaves(&leaves)
+    }
+
+    pub fn size(&self) -> usize {
+        self.data.len()
+    }
+
+    pub fn derive_onchain_part(&self) -> CheckpointOnChain {
+        CheckpointOnChain {
+            size: self.data.len(),
+            root: self.root.clone(),
+            access_version: self.access_version,
+        }
+    }
+
+    pub fn derive_offchain_part(&self) -> CheckpointOffChain {
+        CheckpointOffChain {
+            proofs: self.proofs.clone(),
+            data: self.data.clone(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_merkle_tree() -> anyhow::Result<()> {
+        let mut c = Checkpoint::default();
+        let d0 = vec![1];
+        c.set_data(0, d0);
+        let d1 = vec![2];
+        c.set_data(0, d1);
+        let d2 = vec![3];
+        c.set_data(0, d2);
+        println!("checkpoint: {:?}", c);
+        let mt = c.to_merkle_tree();
+        let root = mt.root().unwrap();
+        let indices = vec![0];
+        let proof = mt.proof(&indices);
+        println!("checkpoint: {:?}", c);
+        println!("merkle root: {:?}", root);
+        let leaves = vec![c.get_sha(0).unwrap()];
+        println!("leaves: {:?}", leaves);
+        assert!(proof.verify(root, &indices, &leaves, c.size()));
+        Ok(())
+    }
+
+    #[test]
+    fn test_set_data() -> anyhow::Result<()> {
+        let mut c = Checkpoint::default();
+        let d = vec![1];
+        c.set_data(0, d);
+        assert_eq!(c.version(), 1);
+        assert_eq!(c.data.get(&0).map(|x| x.data.clone()), Some(vec![1]));
+        Ok(())
+    }
+}
diff --git a/core/src/context.rs b/core/src/context.rs
index ad2a0fb0..7c5f6f82 100644
--- a/core/src/context.rs
+++ b/core/src/context.rs
@@ -1,16 +1,18 @@
 use std::collections::HashMap;
 
-use crate::types::{GameAccount, SettleTransferCheckpoint};
+use crate::checkpoint::{Checkpoint, CheckpointOffChain};
+use crate::types::{ClientMode, GameAccount, SettleWithAddr, SubGameSpec};
 use borsh::{BorshDeserialize, BorshSerialize};
 use race_api::decision::DecisionState;
-use race_api::effect::{Ask, Assign, Effect, Release, Reveal};
+use race_api::effect::{Ask, Assign, Effect, EmitBridgeEvent, Release, Reveal, SubGame};
 use race_api::engine::GameHandler;
 use race_api::error::{Error, Result};
 use race_api::event::{CustomEvent, Event};
+use race_api::prelude::InitAccount;
 use race_api::random::{RandomSpec, RandomState, RandomStatus};
 use race_api::types::{
-    Addr, Ciphertext, DecisionId, GameStatus, PlayerJoin, RandomId, SecretDigest, SecretShare,
-    ServerJoin, Settle, SettleOp, Transfer,
+    Ciphertext, DecisionId, EntryType, GamePlayer, GameStatus, RandomId, SecretDigest, SecretShare,
+    SettleOp, Transfer,
 };
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -38,77 +40,31 @@ impl std::fmt::Display for NodeStatus {
     }
 }
 
-#[derive(Debug, BorshSerialize, BorshDeserialize, PartialEq, Eq, Clone)]
+#[derive(Clone, Debug, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-pub struct Player {
+pub struct Node {
     pub addr: String,
-    pub position: usize,
+    pub id: u64,
+    pub mode: ClientMode,
     pub status: NodeStatus,
-    pub balance: u64,
-}
-
-impl From<PlayerJoin> for Player {
-    fn from(new_player: PlayerJoin) -> Self {
-        Self {
-            addr: new_player.addr,
-            position: new_player.position as _,
-            status: NodeStatus::Ready,
-            balance: new_player.balance,
-        }
-    }
 }
 
-impl Player {
-    pub fn new_pending(addr: String, balance: u64, position: usize, access_version: u64) -> Self {
-        Self {
-            addr,
-            balance,
-            position,
-            status: NodeStatus::Pending(access_version),
-        }
-    }
-
-    pub fn new<S: Into<String>>(addr: S, balance: u64, position: usize) -> Self {
+impl Node {
+    pub fn new_pending<S: Into<String>>(addr: S, access_version: u64, mode: ClientMode) -> Self {
         Self {
             addr: addr.into(),
-            status: NodeStatus::Ready,
-            balance,
-            position,
-        }
-    }
-}
-
-#[derive(Clone, Debug, BorshSerialize, BorshDeserialize)]
-pub struct Server {
-    pub addr: String,
-    pub status: NodeStatus,
-    pub endpoint: String,
-}
-
-impl From<ServerJoin> for Server {
-    fn from(new_server: ServerJoin) -> Self {
-        Self {
-            addr: new_server.addr,
-            status: NodeStatus::Ready,
-            endpoint: new_server.endpoint,
-        }
-    }
-}
-
-impl Server {
-    pub fn new_pending<S: Into<String>>(addr: S, endpoint: String, access_version: u64) -> Self {
-        Server {
-            addr: addr.into(),
-            endpoint,
+            id: access_version,
+            mode,
             status: NodeStatus::Pending(access_version),
         }
     }
 
-    pub fn new<S: Into<String>>(addr: S, endpoint: String) -> Self {
-        Server {
+    pub fn new<S: Into<String>>(addr: S, access_version: u64, mode: ClientMode) -> Self {
+        Self {
             addr: addr.into(),
-            endpoint,
+            id: access_version,
+            mode,
             status: NodeStatus::Ready,
         }
     }
@@ -126,6 +82,23 @@ impl DispatchEvent {
     }
 }
 
+/// The effects of an event, indicates what actions should be taken
+/// after the event handling.
+///
+/// - checkpoint: to send a settlement.
+/// - launch_sub_games: to launch a list of sub games.
+/// - bridge_events: to send events to sub games.
+/// - start_game: to start game.
+#[derive(Debug, Default, PartialEq, Eq)]
+pub struct EventEffects {
+    pub settles: Vec<SettleWithAddr>,
+    pub transfers: Vec<Transfer>,
+    pub checkpoint: Option<Checkpoint>,
+    pub launch_sub_games: Vec<SubGame>,
+    pub bridge_events: Vec<EmitBridgeEvent>,
+    pub start_game: bool,
+}
+
 /// The context for public data.
 ///
 /// This information is not transmitted over the network, instead it's
@@ -152,20 +125,18 @@ impl DispatchEvent {
 /// rejected.
 #[derive(Clone, Debug, BorshSerialize, BorshDeserialize)]
 pub struct GameContext {
-    pub(crate) game_addr: Addr,
+    pub(crate) game_addr: String,
+    /// The id of game, always be zero in master game.
+    pub(crate) game_id: usize,
     /// Version numbers for player/server access.  This number will be
     /// increased whenever a new player joins or a server gets attached.
     pub(crate) access_version: u64,
     /// Version number for transactor settlement.  This number will be
     /// increased whenever a transaction is sent.
     pub(crate) settle_version: u64,
-    /// Current transactor's address
-    pub(crate) transactor_addr: Addr,
     pub(crate) status: GameStatus,
-    /// List of players playing in this game
-    pub(crate) players: Vec<Player>,
-    /// List of validators serving this game
-    pub(crate) servers: Vec<Server>,
+    /// List of nodes serving this game
+    pub(crate) nodes: Vec<Node>,
     pub(crate) dispatch: Option<DispatchEvent>,
     pub(crate) handler_state: Vec<u8>,
     pub(crate) timestamp: u64,
@@ -175,55 +146,145 @@ pub struct GameContext {
     pub(crate) random_states: Vec<RandomState>,
     /// All runtime decision states, each stores the answer.
     pub(crate) decision_states: Vec<DecisionState>,
-    /// Settles, if is not None, will be handled by event loop.
-    pub(crate) settles: Option<Vec<Settle>>,
-    /// Transfers, if is not None, will be handled by event loop.
-    pub(crate) transfers: Option<Vec<Transfer>>,
-    /// The latest checkpoint state
-    pub(crate) checkpoint: Option<Vec<u8>>,
+    /// The checkpoint of current game
+    /// For master game, it contains all subgames' checkpoint
+    pub(crate) checkpoint: Checkpoint,
+    /// The sub games to launch
+    pub(crate) sub_games: Vec<SubGame>,
+    /// Init data from `InitAccount`.
+    pub(crate) init_data: Vec<u8>,
+    /// Maximum number of players.
+    pub(crate) max_players: u16,
+    /// Game Players
+    pub(crate) players: Vec<GamePlayer>,
+    pub(crate) entry_type: EntryType,
 }
 
 impl GameContext {
-    pub fn try_new(game_account: &GameAccount) -> Result<Self> {
+    pub fn try_new_with_sub_game_spec(spec: &SubGameSpec) -> Result<Self> {
+        let SubGameSpec {
+            game_addr,
+            nodes,
+            game_id,
+            init_account,
+            settle_version,
+            access_version,
+            ..
+        } = spec;
+
+        Ok(Self {
+            game_addr: format!("{}:{}", game_addr, game_id),
+            game_id: *game_id,
+            nodes: nodes.clone(),
+            settle_version: *settle_version,
+            access_version: *access_version,
+            max_players: init_account.max_players,
+            players: init_account.players.clone(),
+            init_data: init_account.data.clone(),
+            entry_type: EntryType::Disabled,
+            allow_exit: false,
+            ..Default::default()
+        })
+    }
+
+    pub fn try_new(
+        game_account: &GameAccount,
+        checkpoint_off_chain: Option<CheckpointOffChain>,
+    ) -> Result<Self> {
         let transactor_addr = game_account
             .transactor_addr
             .as_ref()
             .ok_or(Error::GameNotServed)?;
 
-        let players = game_account
-            .players
+        let mut nodes: Vec<Node> = game_account
+            .servers
             .iter()
-            .map(|p| {
-                Player::new_pending(p.addr.clone(), p.balance, p.position as _, p.access_version)
+            .map(|s| {
+                Node::new_pending(
+                    s.addr.clone(),
+                    s.access_version,
+                    if s.addr.eq(transactor_addr) {
+                        ClientMode::Transactor
+                    } else {
+                        ClientMode::Validator
+                    },
+                )
             })
             .collect();
+        let mut players = vec![];
 
-        let servers = game_account
-            .servers
-            .iter()
-            .map(|s| Server::new_pending(s.addr.clone(), s.endpoint.clone(), s.access_version))
-            .collect();
+        let access_version = game_account.checkpoint_on_chain.as_ref().map(|c| c.access_version).unwrap_or(game_account.access_version);
+
+        game_account.players.iter().for_each(|p| {
+            // Only include those players joined before last checkpoint
+            if p.access_version <= access_version
+            {
+                players.push(GamePlayer::new(p.access_version, p.balance, p.position));
+            }
+
+            nodes.push(Node::new_pending(
+                p.addr.clone(),
+                p.access_version,
+                ClientMode::Player,
+            ))
+        });
+
+        let checkpoint = match (checkpoint_off_chain, game_account.checkpoint_on_chain.as_ref()) {
+            (Some(off_chain), Some(on_chain)) => Checkpoint::new_from_parts(off_chain, on_chain.clone()),
+            (None, None) => Checkpoint::default(),
+            _ => return Err(Error::MissingCheckpoint),
+        };
 
         Ok(Self {
             game_addr: game_account.addr.clone(),
+            game_id: 0,
             access_version: game_account.access_version,
             settle_version: game_account.settle_version,
-            transactor_addr: transactor_addr.to_owned(),
-            status: GameStatus::Uninit,
-            players,
-            servers,
+            status: GameStatus::Idle,
+            nodes,
             dispatch: None,
             timestamp: 0,
             allow_exit: false,
             random_states: vec![],
             decision_states: vec![],
-            settles: None,
-            transfers: None,
             handler_state: "".into(),
-            checkpoint: None,
+            checkpoint,
+            sub_games: vec![],
+            init_data: game_account.data.clone(),
+            max_players: game_account.max_players,
+            players,
+            entry_type: game_account.entry_type.clone(),
+        })
+    }
+
+    pub fn init_account(&self) -> Result<InitAccount> {
+        let checkpoint = self.checkpoint.get_data(self.game_id);
+
+        Ok(InitAccount {
+            max_players: self.max_players,
+            entry_type: self.entry_type.clone(),
+            players: self.players.clone(),
+            data: self.init_data.clone(),
+            checkpoint,
         })
     }
 
+    pub fn id_to_addr(&self, id: u64) -> Result<String> {
+        self.nodes
+            .iter()
+            .find(|n| n.id == id)
+            .ok_or(Error::CantMapIdToAddr(id))
+            .map(|n| n.addr.clone())
+    }
+
+    pub fn addr_to_id(&self, addr: &str) -> Result<u64> {
+        self.nodes
+            .iter()
+            .find(|n| n.addr.eq(addr))
+            .ok_or(Error::CantMapAddrToId(addr.to_string()))
+            .map(|n| n.id)
+    }
+
     pub fn set_timestamp(&mut self, timestamp: u64) {
         self.timestamp = timestamp;
     }
@@ -247,65 +308,55 @@ impl GameContext {
         H::try_from_slice(&self.handler_state).unwrap()
     }
 
-    pub fn get_checkpoint(&self) -> Option<Vec<u8>> {
-        self.checkpoint.clone()
+    pub fn checkpoint(&self) -> &Checkpoint {
+        &self.checkpoint
+    }
+
+    pub fn checkpoint_mut(&mut self) -> &mut Checkpoint {
+        &mut self.checkpoint
     }
 
     pub fn set_handler_state<H>(&mut self, handler: &H)
     where
         H: GameHandler,
     {
-        self.handler_state = handler.try_to_vec().unwrap()
+        self.handler_state = borsh::to_vec(&handler).unwrap()
     }
 
-    pub fn get_servers(&self) -> &Vec<Server> {
-        &self.servers
+    pub fn get_nodes(&self) -> &[Node] {
+        &self.nodes
     }
 
-    pub fn get_game_addr(&self) -> &str {
+    pub fn game_addr(&self) -> &str {
         &self.game_addr
     }
 
-    pub fn get_transactor_addr(&self) -> &str {
-        &self.transactor_addr
-    }
-
-    pub fn get_player_by_index(&self, index: usize) -> Option<&Player> {
-        self.players.get(index)
-    }
-
-    pub fn get_player_mut_by_index(&mut self, index: usize) -> Option<&mut Player> {
-        self.players.get_mut(index)
-    }
-
-    pub fn get_player_by_address(&self, addr: &str) -> Option<&Player> {
-        self.players.iter().find(|p| p.addr.eq(addr))
-    }
-
-    pub fn get_player_mut_by_address(&mut self, addr: &str) -> Option<&mut Player> {
-        self.players.iter_mut().find(|p| p.addr.eq(addr))
-    }
-
-    pub fn count_players(&self) -> u16 {
-        self.players.len() as u16
+    pub fn game_id(&self) -> usize {
+        self.game_id
     }
 
-    pub fn count_servers(&self) -> u16 {
-        self.servers.len() as u16
+    pub fn get_transactor_addr(&self) -> Result<&str> {
+        self.nodes
+            .iter()
+            .find(|n| n.mode == ClientMode::Transactor)
+            .as_ref()
+            .map(|n| n.addr.as_str())
+            .ok_or(Error::InvalidTransactorAddress)
     }
 
-    pub fn gen_start_game_event(&self) -> Event {
-        Event::GameStart {
-            access_version: self.access_version,
-        }
+    pub fn count_nodes(&self) -> u16 {
+        self.nodes.len() as u16
     }
 
-    pub fn get_server_by_address(&self, addr: &str) -> Option<&Server> {
-        self.servers.iter().find(|s| s.addr.eq(addr))
+    pub fn get_node_by_address(&self, addr: &str) -> Option<&Node> {
+        self.nodes.iter().find(|n| n.addr.eq(addr))
     }
 
-    pub fn get_transactor_server(&self) -> &Server {
-        self.get_server_by_address(&self.transactor_addr).unwrap()
+    pub fn get_transactor_node(&self) -> Result<&Node> {
+        self.nodes
+            .iter()
+            .find(|n| n.mode == ClientMode::Transactor)
+            .ok_or(Error::CantFindTransactor)
     }
 
     pub fn dispatch_event(&mut self, event: Event, timeout: u64) {
@@ -323,18 +374,13 @@ impl GameContext {
         ));
     }
 
-    pub fn action_timeout(&mut self, player_addr: String, timeout: u64) {
+    pub fn action_timeout(&mut self, player_id: u64, timeout: u64) {
         self.dispatch = Some(DispatchEvent::new(
-            Event::ActionTimeout { player_addr },
+            Event::ActionTimeout { player_id },
             self.timestamp + timeout,
         ));
     }
 
-    pub fn start_game(&mut self) {
-        self.random_states.clear();
-        self.dispatch = Some(DispatchEvent::new(self.gen_start_game_event(), 0));
-    }
-
     pub fn shutdown_game(&mut self) {
         self.dispatch = Some(DispatchEvent::new(Event::Shutdown, 0));
     }
@@ -343,30 +389,20 @@ impl GameContext {
     where
         E: CustomEvent,
     {
-        let event = Event::custom(self.transactor_addr.to_owned(), e);
-        self.dispatch_event(event, timeout);
-    }
-
-    pub fn get_players(&self) -> &Vec<Player> {
-        &self.players
+        if let Ok(node) = self.get_transactor_node() {
+            let event = Event::custom(node.id, e);
+            self.dispatch_event(event, timeout);
+        }
     }
 
     pub fn get_timestamp(&self) -> u64 {
         self.timestamp
     }
 
-    pub fn is_checkpoint(&self) -> bool {
-        self.checkpoint.is_some()
-    }
-
     pub fn get_status(&self) -> GameStatus {
         self.status
     }
 
-    // pub(crate) fn set_players(&mut self, players: Vec<Player>) {
-    //     self.players = players;
-    // }
-
     pub fn list_random_states(&self) -> &Vec<RandomState> {
         &self.random_states
     }
@@ -387,11 +423,11 @@ impl GameContext {
         self.dispatch = None;
     }
 
-    pub fn get_access_version(&self) -> u64 {
+    pub fn access_version(&self) -> u64 {
         self.access_version
     }
 
-    pub fn get_settle_version(&self) -> u64 {
+    pub fn settle_version(&self) -> u64 {
         self.settle_version
     }
 
@@ -434,14 +470,14 @@ impl GameContext {
     }
 
     /// Assign random item to a player
-    pub fn assign<S: Into<String>>(
+    pub fn assign(
         &mut self,
         random_id: RandomId,
-        player_addr: S,
+        player_addr: String,
         indexes: Vec<usize>,
     ) -> Result<()> {
         let rnd_st = self.get_random_state_mut(random_id)?;
-        rnd_st.assign(player_addr.into(), indexes)?;
+        rnd_st.assign(player_addr, indexes)?;
         Ok(())
     }
 
@@ -480,50 +516,19 @@ impl GameContext {
 
     /// Set player status by address.
     /// Using it in custom event handler is not allowed.
-    pub fn set_player_status(&mut self, addr: &str, status: NodeStatus) -> Result<()> {
-        if let Some(p) = self.players.iter_mut().find(|p| p.addr.eq(&addr)) {
-            p.status = status;
+    pub fn set_node_status(&mut self, addr: &str, status: NodeStatus) -> Result<()> {
+        if let Some(n) = self.nodes.iter_mut().find(|n| n.addr.eq(&addr)) {
+            n.status = status;
         } else {
             return Err(Error::InvalidPlayerAddress);
         }
         Ok(())
     }
 
-    /// Add player to the game.
-    pub fn add_player(&mut self, player: &PlayerJoin) -> Result<()> {
-        if let Some(p) = self
-            .players
-            .iter()
-            .find(|p| p.addr.eq(&player.addr) || p.position == player.position as usize)
-        {
-            if p.position == player.position as usize {
-                Err(Error::PositionOccupied(p.position))
-            } else {
-                Err(Error::PlayerAlreadyJoined(player.addr.clone()))
-            }
-        } else {
-            self.players.push(Player::new(
-                player.addr.clone(),
-                player.balance,
-                player.position as _,
-            ));
-            Ok(())
-        }
-    }
-
-    /// Add server to the game.
-    pub fn add_server(&mut self, server: &ServerJoin) -> Result<()> {
-        if self
-            .servers
-            .iter()
-            .any(|s| s.addr.eq(&server.addr))
-        {
-            Err(Error::ServerAlreadyJoined(server.addr.clone()))
-        } else {
-            self.servers
-                .push(Server::new(server.addr.clone(), server.endpoint.clone()));
-            Ok(())
-        }
+    pub fn add_node(&mut self, node_addr: String, access_version: u64, mode: ClientMode) {
+        self.nodes.retain(|n| n.addr.ne(&node_addr));
+        self.nodes
+            .push(Node::new_pending(node_addr, access_version, mode))
     }
 
     pub fn set_access_version(&mut self, access_version: u64) {
@@ -534,21 +539,6 @@ impl GameContext {
         self.allow_exit = allow_exit;
     }
 
-    /// Remove player from the game.
-    pub fn remove_player(&mut self, addr: &str) -> Result<()> {
-        let orig_len = self.players.len();
-        if self.allow_exit {
-            self.players.retain(|p| p.addr.ne(&addr));
-            if orig_len == self.players.len() {
-                Err(Error::PlayerNotInGame)
-            } else {
-                Ok(())
-            }
-        } else {
-            Err(Error::CantLeave)
-        }
-    }
-
     /// Dispatch an event if there's none
     pub fn dispatch_safe(&mut self, event: Event, timeout: u64) {
         if self.dispatch.is_none() {
@@ -568,11 +558,13 @@ impl GameContext {
     pub fn init_random_state(&mut self, spec: RandomSpec) -> Result<RandomId> {
         let random_id = self.random_states.len() + 1;
         let owners: Vec<String> = self
-            .servers
+            .nodes
             .iter()
-            .filter_map(|s| {
-                if s.status == NodeStatus::Ready {
-                    Some(s.addr.clone())
+            .filter_map(|n| {
+                if n.status == NodeStatus::Ready
+                    && matches!(n.mode, ClientMode::Transactor | ClientMode::Validator)
+                {
+                    Some(n.addr.clone())
                 } else {
                     None
                 }
@@ -587,7 +579,7 @@ impl GameContext {
         Ok(random_id)
     }
 
-    pub fn add_shared_secrets(&mut self, _addr: &str, shares: Vec<SecretShare>) -> Result<()> {
+    pub fn add_shared_secrets(&mut self, _addr: String, shares: Vec<SecretShare>) -> Result<()> {
         for share in shares.into_iter() {
             match share {
                 SecretShare::Random {
@@ -638,130 +630,46 @@ impl GameContext {
     pub fn dispatch_randomization_timeout(&mut self, random_id: RandomId) -> Result<()> {
         let no_dispatch = self.dispatch.is_none();
         let rnd_st = self.get_random_state_mut(random_id)?;
-        match &rnd_st.status {
+        match rnd_st.status.clone() {
             RandomStatus::Shared => {}
             RandomStatus::Ready => {
                 self.dispatch_event_instantly(Event::RandomnessReady { random_id });
             }
             RandomStatus::Locking(ref addr) => {
-                let addr = addr.to_owned();
+                let id = self.addr_to_id(addr)?;
                 if no_dispatch {
                     self.dispatch_event(
-                        Event::OperationTimeout { addrs: vec![addr] },
+                        Event::OperationTimeout { ids: vec![id] },
                         OPERATION_TIMEOUT,
                     );
                 }
             }
             RandomStatus::Masking(ref addr) => {
-                let addr = addr.to_owned();
+                let id = self.addr_to_id(addr)?;
                 if no_dispatch {
                     self.dispatch_event(
-                        Event::OperationTimeout { addrs: vec![addr] },
+                        Event::OperationTimeout { ids: vec![id] },
                         OPERATION_TIMEOUT,
                     );
                 }
             }
             RandomStatus::WaitingSecrets => {
                 if no_dispatch {
-                    let addrs = rnd_st.list_operating_addrs();
-                    self.dispatch_event(Event::OperationTimeout { addrs }, OPERATION_TIMEOUT);
+                    let ids = rnd_st
+                        .list_operating_addrs()
+                        .into_iter()
+                        .map(|addr| self.addr_to_id(&addr))
+                        .collect::<Result<Vec<u64>>>()?;
+                    self.dispatch_event(Event::OperationTimeout { ids }, OPERATION_TIMEOUT);
                 }
             }
         }
         Ok(())
     }
 
-    pub fn settle(&mut self, settles: Vec<Settle>) {
-        self.settles = Some(settles);
-    }
-
-    pub fn transfer(&mut self, transfers: Vec<Transfer>) {
-        self.transfers = Some(transfers);
-    }
-
-    pub fn get_settles(&self) -> &Option<Vec<Settle>> {
-        &self.settles
-    }
-
-    pub fn bump_settle_version(&mut self) {
+    pub fn bump_settle_version(&mut self) -> Result<()> {
         self.settle_version += 1;
-    }
-
-    pub fn take_settles_and_transfers(
-        &mut self,
-    ) -> Result<Option<SettleTransferCheckpoint>> {
-        if let Some(checkpoint) = self.get_checkpoint() {
-            let mut settles = None;
-            std::mem::swap(&mut settles, &mut self.settles);
-
-            if let Some(settles) = settles.as_mut() {
-                settles.sort_by_key(|s| match s.op {
-                    SettleOp::Add(_) => 0,
-                    SettleOp::Sub(_) => 1,
-                    SettleOp::Eject => 2,
-                    SettleOp::AssignSlot(_) => 3,
-                })
-            }
-
-            for s in settles.as_ref().unwrap().iter() {
-                match s.op {
-                    SettleOp::Eject => {
-                        self.players.retain(|p| p.addr.ne(&s.addr));
-                    }
-                    SettleOp::Add(amount) => {
-                        let p =
-                            self.get_player_mut_by_address(&s.addr)
-                                .ok_or(Error::InvalidSettle(format!(
-                                    "Invalid player address: {}",
-                                    s.addr
-                                )))?;
-                        p.balance =
-                            p.balance
-                                .checked_add(amount)
-                                .ok_or(Error::InvalidSettle(format!(
-                                    "Settle amount overflow (add): balance {}, change {}",
-                                    p.balance, amount,
-                                )))?;
-                    }
-                    SettleOp::Sub(amount) => {
-                        let p =
-                            self.get_player_mut_by_address(&s.addr)
-                                .ok_or(Error::InvalidSettle(format!(
-                                    "Invalid player address: {}",
-                                    s.addr
-                                )))?;
-                        p.balance =
-                            p.balance
-                                .checked_sub(amount)
-                                .ok_or(Error::InvalidSettle(format!(
-                                    "Settle amount overflow (sub): balance {}, change {}",
-                                    p.balance, amount,
-                                )))?;
-                    }
-                    SettleOp::AssignSlot(_) => {}
-                }
-            }
-
-            let mut transfers = None;
-            std::mem::swap(&mut transfers, &mut self.transfers);
-            self.bump_settle_version();
-
-            Ok(Some((
-                settles.unwrap_or(vec![]),
-                transfers.unwrap_or(vec![]),
-                checkpoint,
-            )))
-        } else {
-            Ok(None)
-        }
-    }
-
-    pub fn add_settle(&mut self, settle: Settle) {
-        if let Some(ref mut settles) = self.settles {
-            settles.push(settle);
-        } else {
-            self.settles = Some(vec![settle]);
-        }
+        Ok(())
     }
 
     pub fn add_revealed_random(
@@ -803,7 +711,7 @@ impl GameContext {
         Ok(&rnd_st.revealed)
     }
 
-    pub fn derive_effect(&self) -> Effect {
+    pub fn derive_effect(&self, is_init: bool) -> Effect {
         let revealed = self
             .list_random_states()
             .iter()
@@ -812,9 +720,7 @@ impl GameContext {
         let answered = self
             .list_decision_states()
             .iter()
-            .filter_map(|st| {
-                st.get_revealed().map(|a| (st.id, a.to_owned()))
-            })
+            .filter_map(|st| st.get_revealed().map(|a| (st.id, a.to_owned())))
             .collect();
 
         Effect {
@@ -826,8 +732,7 @@ impl GameContext {
             timestamp: self.timestamp,
             curr_random_id: self.list_random_states().len() + 1,
             curr_decision_id: self.list_decision_states().len() + 1,
-            players_count: self.count_players(),
-            servers_count: self.count_servers(),
+            nodes_count: self.count_nodes(),
             asks: Vec::new(),
             assigns: Vec::new(),
             reveals: Vec::new(),
@@ -836,16 +741,19 @@ impl GameContext {
             revealed,
             answered,
             is_checkpoint: false,
-            checkpoint: None,
             settles: Vec::new(),
             handler_state: Some(self.handler_state.clone()),
             error: None,
             allow_exit: self.allow_exit,
             transfers: Vec::new(),
+            launch_sub_games: Vec::new(),
+            bridge_events: Vec::new(),
+            valid_players: self.players.clone(),
+            is_init,
         }
     }
 
-    pub fn apply_effect(&mut self, effect: Effect) -> Result<()> {
+    pub fn apply_effect(&mut self, effect: Effect) -> Result<EventEffects> {
         let Effect {
             action_timeout,
             wait_timeout,
@@ -861,17 +769,22 @@ impl GameContext {
             transfers,
             handler_state,
             allow_exit,
-            checkpoint,
+            is_checkpoint,
+            launch_sub_games,
+            bridge_events,
+            error,
+            is_init,
             ..
         } = effect;
 
         // Handle dispatching
         if start_game {
-            self.start_game();
+            // self.random_states.clear();
+            // self.decision_states.clear();
         } else if stop_game {
             self.shutdown_game();
         } else if let Some(t) = action_timeout {
-            self.action_timeout(t.player_addr, t.timeout);
+            self.action_timeout(t.player_id, t.timeout);
         } else if let Some(t) = wait_timeout {
             self.wait_timeout(t);
         } else if cancel_dispatch {
@@ -883,10 +796,11 @@ impl GameContext {
         for Assign {
             random_id,
             indexes,
-            player_addr,
+            player_id,
         } in assigns.into_iter()
         {
-            self.assign(random_id, player_addr, indexes)?;
+            let addr = self.id_to_addr(player_id)?;
+            self.assign(random_id, addr, indexes)?;
         }
 
         for Reveal { random_id, indexes } in reveals.into_iter() {
@@ -897,41 +811,91 @@ impl GameContext {
             self.release(decision_id)?;
         }
 
-        for Ask { player_addr } in asks.into_iter() {
-            self.ask(player_addr);
+        for Ask { player_id } in asks.into_iter() {
+            let addr = self.id_to_addr(player_id)?;
+            self.ask(addr);
         }
 
         for spec in init_random_states.into_iter() {
             self.init_random_state(spec)?;
         }
 
-        if let Some(checkpoint_state) = checkpoint {
-            self.checkpoint = Some(checkpoint_state);
-            self.settle(settles);
-            self.transfer(transfers);
-        } else if (!settles.is_empty()) || (!transfers.is_empty()) {
-            return Err(Error::SettleWithoutCheckpoint);
-        }
-
         if let Some(state) = handler_state {
-            self.handler_state = state;
-        }
+            self.handler_state = state.clone();
 
-        Ok(())
-    }
+            let mut settles1 = Vec::with_capacity(settles.len());
 
-    pub fn set_node_ready(&mut self, access_version: u64) {
-        for s in self.servers.iter_mut() {
-            if let NodeStatus::Pending(a) = s.status {
-                if a <= access_version {
-                    s.status = NodeStatus::Ready
+            if is_init && self.checkpoint.is_empty() {
+                self.checkpoint = Checkpoint::new(
+                    self.game_id,
+                    self.access_version,
+                    self.settle_version,
+                    state.clone(),
+                );
+            }
+
+            if is_checkpoint {
+                // Clear the random states
+                self.random_states.clear();
+                self.decision_states.clear();
+
+                self.bump_settle_version()?;
+                self.checkpoint.set_data(self.game_id, state);
+                self.checkpoint.set_access_version(self.access_version);
+
+                for s in settles {
+                    match s.op {
+                        SettleOp::Eject => {
+                            self.remove_player(s.id)?;
+                        }
+                        SettleOp::Add(amount) => {
+                            self.player_add_balance(s.id, amount)?;
+                        }
+                        SettleOp::Sub(amount) => {
+                            self.player_sub_balance(s.id, amount)?;
+                        }
+                        _ => {}
+                    }
+                    let addr = self.id_to_addr(s.id)?;
+                    settles1.push(SettleWithAddr { addr, op: s.op });
                 }
+                self.set_game_status(GameStatus::Idle);
+            }
+
+            settles1.sort_by_key(|s| match s.op {
+                SettleOp::Add(_) => 0,
+                SettleOp::Sub(_) => 1,
+                SettleOp::Eject => 2,
+                SettleOp::AssignSlot(_) => 3,
+            });
+
+            // Append SubGame to context
+            for sub_game in launch_sub_games.iter().cloned() {
+                self.sub_games.push(sub_game);
             }
+
+            return Ok(EventEffects {
+                settles: settles1,
+                transfers,
+                checkpoint: is_checkpoint.then(|| self.checkpoint.clone()),
+                launch_sub_games,
+                bridge_events,
+                start_game,
+            });
+        } else if let Some(e) = error {
+            return Err(Error::HandleError(e));
+        } else {
+            return Err(Error::InternalError(
+                "Missing both state and error".to_string(),
+            ));
         }
-        for p in self.players.iter_mut() {
-            if let NodeStatus::Pending(a) = p.status {
+    }
+
+    pub fn set_node_ready(&mut self, access_version: u64) {
+        for n in self.nodes.iter_mut() {
+            if let NodeStatus::Pending(a) = n.status {
                 if a <= access_version {
-                    p.status = NodeStatus::Ready
+                    n.status = NodeStatus::Ready
                 }
             }
         }
@@ -942,28 +906,68 @@ impl GameContext {
             return Err(Error::InvalidCheckpoint);
         }
 
-        self.players.retain(|p| match p.status {
-            NodeStatus::Pending(v) => v <= access_version,
-            NodeStatus::Confirming => true,
-            NodeStatus::Ready => true,
-            NodeStatus::Disconnected => true,
-        });
+        self.access_version = access_version;
 
-        self.servers.retain(|s| match s.status {
-            NodeStatus::Pending(v) => v <= access_version || s.addr.eq(&self.transactor_addr),
-            NodeStatus::Confirming => true,
-            NodeStatus::Ready => true,
-            NodeStatus::Disconnected => true,
-        });
+        Ok(())
+    }
 
-        self.access_version = access_version;
+    pub fn init_data(&self) -> Vec<u8> {
+        self.init_data.clone()
+    }
+
+    pub fn max_players(&self) -> u16 {
+        self.max_players
+    }
+
+    pub fn players(&self) -> &[GamePlayer] {
+        &self.players
+    }
+
+    pub fn add_player(&mut self, player: GamePlayer) {
+        self.players.push(player)
+    }
+
+    pub fn player_sub_balance(&mut self, player_id: u64, amount: u64) -> Result<()> {
+        let p = self
+            .players
+            .iter_mut()
+            .find(|p| p.id == player_id)
+            .ok_or(Error::PlayerNotInGame)?;
+
+        p.balance = p
+            .balance
+            .checked_sub(amount)
+            .ok_or(Error::SubBalanceError(player_id, p.balance, amount))?;
 
         Ok(())
     }
 
-    pub fn prepare_for_next_event(&mut self, timestamp: u64) {
-        self.set_timestamp(timestamp);
-        self.checkpoint = None;
+    pub fn player_add_balance(&mut self, player_id: u64, amount: u64) -> Result<()> {
+        let p = self
+            .players
+            .iter_mut()
+            .find(|p| p.id == player_id)
+            .ok_or(Error::PlayerNotInGame)?;
+
+        p.balance = p
+            .balance
+            .checked_add(amount)
+            .ok_or(Error::AddBalanceError(player_id, p.balance, amount))?;
+
+        Ok(())
+    }
+
+    pub fn remove_player(&mut self, player_id: u64) -> Result<()> {
+        if let Some(index) = self.players.iter().position(|p| p.id == player_id) {
+            self.players.remove(index);
+        } else {
+            return Err(Error::PlayerNotInGame);
+        }
+        Ok(())
+    }
+
+    pub fn entry_type(&self) -> EntryType {
+        self.entry_type.clone()
     }
 }
 
@@ -971,21 +975,23 @@ impl Default for GameContext {
     fn default() -> Self {
         Self {
             game_addr: "".into(),
+            game_id: 0,
             access_version: 0,
             settle_version: 0,
-            transactor_addr: "".into(),
-            status: GameStatus::Uninit,
-            players: Vec::new(),
-            servers: Vec::new(),
+            status: GameStatus::Idle,
+            nodes: Vec::new(),
             dispatch: None,
             handler_state: "".into(),
             timestamp: 0,
             allow_exit: false,
             random_states: Vec::new(),
             decision_states: Vec::new(),
-            settles: None,
-            transfers: None,
-            checkpoint: None,
+            checkpoint: Checkpoint::default(),
+            sub_games: Vec::new(),
+            init_data: Vec::new(),
+            max_players: 0,
+            players: Vec::new(),
+            entry_type: EntryType::Disabled,
         }
     }
 }
diff --git a/core/src/engine.rs b/core/src/engine.rs
index 8429bbd0..5f018f06 100644
--- a/core/src/engine.rs
+++ b/core/src/engine.rs
@@ -1,20 +1,8 @@
-use crate::{
-    context::GameContext,
-    encryptor::EncryptorT,
-    types::{GameStatus, Settle},
-};
-use race_api::engine::InitAccount;
-use race_api::error::{Error, HandleError};
+use crate::{context::GameContext, encryptor::EncryptorT, types::GameStatus};
+use race_api::error::Error;
 use race_api::event::Event;
 use race_api::random::RandomStatus;
 
-pub fn general_init_state(
-    _context: &mut GameContext,
-    _init_account: &InitAccount,
-) -> Result<(), HandleError> {
-    Ok(())
-}
-
 /// A general function for system events handling.
 pub fn general_handle_event(
     context: &mut GameContext,
@@ -23,14 +11,11 @@ pub fn general_handle_event(
 ) -> Result<(), Error> {
     // General event handling
     match event {
-        Event::Ready => {
-            // This is the first event, we make it a checkpoint
-            // context.checkpoint = true;
-            Ok(())
-        }
+        Event::Ready => Ok(()),
 
         Event::ShareSecrets { sender, shares } => {
-            context.add_shared_secrets(sender, shares.clone())?;
+            let addr = context.id_to_addr(*sender)?;
+            context.add_shared_secrets(addr, shares.clone())?;
             let mut random_ids = Vec::<usize>::default();
             for random_state in context.list_random_states_mut() {
                 if random_state.status == RandomStatus::Shared {
@@ -50,7 +35,8 @@ pub fn general_handle_event(
             ciphertext,
             digest,
         } => {
-            context.answer_decision(*decision_id, sender, ciphertext.clone(), digest.clone())?;
+            let addr = context.id_to_addr(*sender)?;
+            context.answer_decision(*decision_id, &addr, ciphertext.clone(), digest.clone())?;
             Ok(())
         }
 
@@ -59,7 +45,8 @@ pub fn general_handle_event(
             random_id,
             ciphertexts,
         } => {
-            context.randomize_and_mask(sender, *random_id, ciphertexts.clone())?;
+            let addr = context.id_to_addr(*sender)?;
+            context.randomize_and_mask(&addr, *random_id, ciphertexts.clone())?;
             Ok(())
         }
 
@@ -68,60 +55,43 @@ pub fn general_handle_event(
             random_id,
             ciphertexts_and_digests: ciphertexts_and_tests,
         } => {
-            context.lock(sender, *random_id, ciphertexts_and_tests.clone())?;
+            let addr = context.id_to_addr(*sender)?;
+            context.lock(&addr, *random_id, ciphertexts_and_tests.clone())?;
             Ok(())
         }
 
         Event::RandomnessReady { .. } => Ok(()),
 
-        Event::Sync {
-            new_players,
-            new_servers,
-            transactor_addr: _,
-            access_version,
-        } => {
-            if *access_version <= context.access_version {
-                return Err(Error::EventIgnored);
-            }
-            for p in new_players.iter() {
-                context.add_player(p)?;
-            }
-            for s in new_servers.iter() {
-                context.add_server(s)?;
+        Event::Join { players } => {
+            for p in players {
+                context.add_player(p.to_owned());
             }
-            context.access_version = *access_version;
-
             Ok(())
         }
 
-        Event::Leave { player_addr } => {
+        Event::Leave { .. } => {
             if !context.allow_exit {
                 Err(Error::CantLeave)
-            } else if !context
-                .players
-                .iter()
-                .any(|p| p.addr.eq(player_addr))
-            {
-                Err(Error::InvalidPlayerAddress)
             } else {
                 Ok(())
             }
         }
 
-        Event::GameStart { access_version } => {
+        Event::GameStart => {
+            // Update nodes' status based on current `access_version`.
+            context.set_node_ready(context.access_version());
             context.set_game_status(GameStatus::Running);
-            context.set_node_ready(*access_version);
             Ok(())
         }
 
-        Event::OperationTimeout { addrs: _ } => {
+        Event::OperationTimeout { ids: _ } => {
             // This event is for game handler
             Ok(())
         }
 
         Event::WaitingTimeout => Ok(()),
 
-        Event::ActionTimeout { player_addr: _ } => {
+        Event::ActionTimeout { player_id: _ } => {
             // This event is for game handler
             Ok(())
         }
@@ -166,35 +136,23 @@ pub fn general_handle_event(
             Ok(())
         }
 
-        _ => Ok(()),
-    }
-}
-
-/// Context maintaining after event handling.
-pub fn post_handle_event(
-    old_context: &GameContext,
-    new_context: &mut GameContext,
-) -> Result<(), Error> {
-    // Find all leaving player, submit during the settlement.
-    // Or create a settlement for just player leaving.
-    let mut left_players = vec![];
-    for p in old_context.players.iter() {
-        if new_context.get_player_by_address(&p.addr).is_none() {
-            left_players.push(p.addr.to_owned());
+        Event::Bridge {
+            join_players,
+            ..
+        } => {
+            for p in join_players {
+                context.add_player(p.to_owned());
+            }
+            Ok(())
         }
-    }
 
-    for p in left_players.into_iter() {
-        new_context.add_settle(Settle::eject(p));
+        _ => Ok(()),
     }
-
-    Ok(())
 }
 
 #[cfg(test)]
 mod tests {
 
-    use race_api::types::{ServerJoin, PlayerJoin};
     use crate::encryptor::tests::DummyEncryptor;
 
     use super::*;
@@ -203,47 +161,9 @@ mod tests {
     fn test_handle_game_start() -> anyhow::Result<()> {
         let encryptor = DummyEncryptor::default();
         let mut context = GameContext::default();
-        let event = Event::GameStart { access_version: 1 };
+        let event = Event::GameStart;
         general_handle_event(&mut context, &event, &encryptor)?;
         assert_eq!(context.status, GameStatus::Running);
         Ok(())
     }
-
-    #[test]
-    fn test_handle_sync() -> anyhow::Result<()> {
-        let encryptor = DummyEncryptor::default();
-        let mut context = GameContext::default();
-        let event = Event::Sync {
-            new_players: vec![
-                PlayerJoin {
-                    addr: "alice".into(),
-                    position: 0,
-                    balance: 100,
-                    access_version: 1,
-                    verify_key: "VERIFY KEY".into(),
-                },
-                PlayerJoin {
-                    addr: "bob".into(),
-                    position: 1,
-                    balance: 100,
-                    access_version: 1,
-                    verify_key: "VERIFY KEY".into(),
-                },
-            ],
-            new_servers: vec![ServerJoin {
-                addr: "foo".into(),
-                endpoint: "foo.endpoint".into(),
-                access_version: 1,
-                verify_key: "VERIFY KEY".into(),
-            }],
-            transactor_addr: "".into(),
-            access_version: 1,
-        };
-
-        general_handle_event(&mut context, &event, &encryptor)?;
-
-        assert_eq!(context.count_players(), 2);
-        assert_eq!(context.count_servers(), 1);
-        Ok(())
-    }
 }
diff --git a/core/src/lib.rs b/core/src/lib.rs
index d675f958..35c4ff3f 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -1,7 +1,9 @@
 pub mod encryptor;
 pub mod types;
+pub mod checkpoint;
 pub mod context;
 pub mod engine;
 pub mod secret;
 pub mod connection;
 pub mod transport;
+pub mod storage;
diff --git a/core/src/storage.rs b/core/src/storage.rs
new file mode 100644
index 00000000..b7833ad5
--- /dev/null
+++ b/core/src/storage.rs
@@ -0,0 +1,13 @@
+use async_trait::async_trait;
+use race_api::error::Result;
+
+use crate::{checkpoint::CheckpointOffChain, types::{GetCheckpointParams, SaveCheckpointParams}};
+
+#[async_trait]
+pub trait StorageT: Send + Sync {
+    /// Upload the checkpoint to storage, return the proof.
+    async fn save_checkpoint(&self, params: SaveCheckpointParams) -> Result<()>;
+
+    /// Get data by key from storage.
+    async fn get_checkpoint(&self, params: GetCheckpointParams) -> Result<Option<CheckpointOffChain>>;
+}
diff --git a/core/src/transport.rs b/core/src/transport.rs
index acf916f1..b9946b20 100644
--- a/core/src/transport.rs
+++ b/core/src/transport.rs
@@ -1,3 +1,5 @@
+use std::pin::Pin;
+
 use crate::types::{
     AssignRecipientParams, CloseGameAccountParams, CreateGameAccountParams,
     CreatePlayerProfileParams, CreateRecipientParams, CreateRegistrationParams, DepositParams,
@@ -7,6 +9,7 @@ use crate::types::{
     VoteParams,
 };
 use async_trait::async_trait;
+use futures::Stream;
 use race_api::error::Result;
 
 #[async_trait]
@@ -133,7 +136,7 @@ pub trait TransportT: Send + Sync {
 
     async fn publish_game(&self, params: PublishGameParams) -> Result<String>;
 
-    async fn settle_game(&self, params: SettleParams) -> Result<()>;
+    async fn settle_game(&self, params: SettleParams) -> Result<String>;
 
     async fn create_registration(&self, params: CreateRegistrationParams) -> Result<String>;
 
@@ -144,6 +147,9 @@ pub trait TransportT: Send + Sync {
     /// Get game account by its address.
     async fn get_game_account(&self, addr: &str, mode: QueryMode) -> Result<Option<GameAccount>>;
 
+    /// Subscribe game account by its address.
+    async fn subscribe_game_account<'a>(&'a self, addr: &'a str) -> Result<Pin<Box<dyn Stream<Item = Option<GameAccount>> + Send + 'a>>>;
+
     /// Get game bundle account by its address.
     async fn get_game_bundle(&self, addr: &str) -> Result<Option<GameBundle>>;
 
diff --git a/core/src/types.rs b/core/src/types.rs
index 24a0bed9..bcb966a6 100644
--- a/core/src/types.rs
+++ b/core/src/types.rs
@@ -2,8 +2,14 @@ mod transport_params;
 mod transactor_params;
 mod common;
 mod accounts;
+mod broadcast_frame;
+mod tx_state;
+mod storage_params;
 
+pub use storage_params::*;
 pub use transport_params::*;
 pub use transactor_params::*;
 pub use common::*;
 pub use accounts::*;
+pub use broadcast_frame::*;
+pub use tx_state::*;
diff --git a/core/src/types/accounts.rs b/core/src/types/accounts.rs
index 49f5fdf8..09b3433d 100644
--- a/core/src/types/accounts.rs
+++ b/core/src/types/accounts.rs
@@ -1,14 +1,17 @@
 //! The data structures for on-chain accounts.
 
-use borsh::{BorshDeserialize, BorshSerialize};
-use race_api::prelude::InitAccount;
-#[cfg(feature = "serde")]
-use serde::{Deserialize, Serialize};
-use crate::types::{PlayerJoin, PlayerDeposit, ServerJoin};
 use super::{
     common::{EntryType, VoteType},
     RecipientSlot,
 };
+use crate::{
+    checkpoint::{Checkpoint, CheckpointOnChain},
+    types::{PlayerDeposit, PlayerJoin, ServerJoin},
+};
+use borsh::{BorshDeserialize, BorshSerialize};
+use race_api::prelude::InitAccount;
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
 
 #[derive(Debug, PartialEq, Eq, Clone, BorshSerialize, BorshDeserialize)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -42,7 +45,7 @@ pub struct ServerAccount {
 ///
 /// NFTs and Tokens are grouped by slots.  A slot can only store one
 /// NFT or one kind of token.
-#[derive(Debug, Clone, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
+#[derive(Debug, Clone, BorshSerialize, BorshDeserialize, PartialEq, Eq, Default)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct RecipientAccount {
@@ -118,7 +121,12 @@ pub struct RecipientAccount {
 ///
 /// The address to receive payment from the game.  This is used for a
 /// complex payment or commission payment.
-#[derive(Debug, Default, Clone, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
+///
+/// # Checkpoint
+///
+/// The checkpoint is the state of the game when the settlement is
+/// made.  We only save the root of checkpoint merkle tree on chain.
+#[derive(Debug, Default, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct GameAccount {
@@ -140,52 +148,45 @@ pub struct GameAccount {
     pub data: Vec<u8>,
     pub entry_type: EntryType,
     pub recipient_addr: String,
-    pub checkpoint: Vec<u8>,
-    pub checkpoint_access_version: u64,
+    pub checkpoint_on_chain: Option<CheckpointOnChain>,
 }
 
 impl GameAccount {
-    pub fn derive_init_account(&self) -> InitAccount {
-        let game_account = self.to_owned();
+    pub fn derive_init_account(&self, checkpoint: &Checkpoint) -> InitAccount {
         InitAccount {
-            addr: game_account.addr,
-            players: game_account.players.clone(),
-            servers:  game_account.servers.clone(),
-            data: game_account.data.clone(),
-            access_version: game_account.access_version,
-            settle_version: game_account.settle_version,
-            max_players: game_account.max_players,
-            checkpoint: game_account.checkpoint,
+            max_players: self.max_players,
+            entry_type: self.entry_type.clone(),
+            players: self.players.iter().cloned().map(Into::into).collect(),
+            data: self.data.clone(),
+            checkpoint: checkpoint.get_data(0),
         }
     }
 
-    pub fn derive_rollbacked_init_account(&self) -> InitAccount {
-        let game_account = self.to_owned();
-        let Self { players, servers, addr, data, max_players, checkpoint, checkpoint_access_version, settle_version, transactor_addr, .. } = game_account;
-
+    pub fn derive_init_account_with_empty_checkpoint(&self) -> InitAccount {
+        InitAccount {
+            max_players: self.max_players,
+            entry_type: self.entry_type.clone(),
+            players: self.players.iter().cloned().map(Into::into).collect(),
+            data: self.data.clone(),
+            checkpoint: None,
+        }
+    }
 
-        let is_transactor = |addr: &String| {
-            transactor_addr.clone().is_some_and(|a| a.eq(addr))
-        };
-        let players = players
-            .into_iter()
-            .filter(|p| p.access_version <= checkpoint_access_version)
-            .collect();
-        let servers = servers
-            .into_iter()
-            // There's no sync event for transactor, so here we always include transactor address
-            .filter(|s| s.access_version <= checkpoint_access_version || is_transactor(&s.addr))
+    pub fn derive_checkpoint_init_account(&self, checkpoint: &Checkpoint) -> InitAccount {
+        let players = self
+            .players
+            .iter()
+            .filter(|p| p.access_version <= checkpoint.access_version)
+            .cloned()
+            .map(|p| p.into())
             .collect();
 
         InitAccount {
-            addr,
+            entry_type: self.entry_type.clone(),
+            max_players: self.max_players,
             players,
-            servers,
-            data,
-            access_version: checkpoint_access_version,
-            settle_version,
-            max_players,
-            checkpoint
+            data: self.data.clone(),
+            checkpoint: checkpoint.get_data(0),
         }
     }
 }
@@ -239,250 +240,3 @@ pub struct PlayerProfile {
     pub nick: String,
     pub pfp: Option<String>,
 }
-
-#[cfg(test)]
-mod tests {
-
-    use super::*;
-
-    #[test]
-    fn test_server_account() {
-        let s = ServerAccount {
-            addr: "an addr".to_string(),
-            endpoint: "http://foo.bar".to_string(),
-        };
-
-        let res_bytes = [
-            7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 14, 0, 0, 0, 104, 116, 116, 112, 58, 47,
-            47, 102, 111, 111, 46, 98, 97, 114,
-        ];
-        let ser = s.try_to_vec().unwrap();
-        println!("Serialized server account {:?}", ser);
-        assert_eq!(ser, res_bytes);
-        // let decoded = ServerAccount::try_from_slice(&res).unwrap();
-        // assert_eq!(decoded, res);
-    }
-
-    #[test]
-    fn test_player_profile() {
-        let p = PlayerProfile {
-            addr: "an addr".to_string(),
-            nick: "Alice".to_string(),
-            pfp: Some("Awesome PFP".to_string()),
-        };
-        let bytes = [
-            7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 5, 0, 0, 0, 65, 108, 105, 99, 101, 1, 11,
-            0, 0, 0, 65, 119, 101, 115, 111, 109, 101, 32, 80, 70, 80,
-        ];
-
-        let ser = p.try_to_vec().unwrap();
-        println!("Serialized player profile {:?}", ser);
-
-        assert_eq!(ser, bytes);
-    }
-
-    #[test]
-    fn test_player_profile2() {
-        let p = PlayerProfile {
-            addr: "FhgSDdsXx88htt3kzn1GToXwMtE3VTvg2iyimQUoqELe".to_string(),
-            nick: "Gentoo".to_string(),
-            pfp: None,
-        };
-
-        let p1 = PlayerProfile::try_from_slice(&[
-            44, 0, 0, 0, 70, 104, 103, 83, 68, 100, 115, 88, 120, 56, 56, 104, 116, 116, 51, 107,
-            122, 110, 49, 71, 84, 111, 88, 119, 77, 116, 69, 51, 86, 84, 118, 103, 50, 105, 121,
-            105, 109, 81, 85, 111, 113, 69, 76, 101, 6, 0, 0, 0, 71, 101, 110, 116, 111, 111, 0,
-        ])
-            .unwrap();
-        assert_eq!(p.addr, p1.addr);
-        assert_eq!(p.nick, p1.nick);
-        assert_eq!(p.pfp, p1.pfp);
-    }
-
-    #[test]
-    fn test_reg() {
-        let reg = RegistrationAccount {
-            addr: "an addr".to_string(),
-            is_private: true,
-            size: 100,
-            owner: Some("another addr".to_string()),
-            games: vec![
-                GameRegistration {
-                    title: "Game A".to_string(),
-                    addr: "addr 0".to_string(),
-                    reg_time: 1000u64,
-                    bundle_addr: "bundle 0".to_string(),
-                },
-                GameRegistration {
-                    title: "Game B".to_string(),
-                    addr: "addr 1".to_string(),
-                    reg_time: 1001u64,
-                    bundle_addr: "bundle 1".to_string(),
-                },
-            ],
-        };
-        let bytes = [
-            7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 1, 100, 0, 1, 12, 0, 0, 0, 97, 110, 111,
-            116, 104, 101, 114, 32, 97, 100, 100, 114, 2, 0, 0, 0, 6, 0, 0, 0, 71, 97, 109, 101,
-            32, 65, 6, 0, 0, 0, 97, 100, 100, 114, 32, 48, 232, 3, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0,
-            98, 117, 110, 100, 108, 101, 32, 48, 6, 0, 0, 0, 71, 97, 109, 101, 32, 66, 6, 0, 0, 0,
-            97, 100, 100, 114, 32, 49, 233, 3, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 98, 117, 110, 100,
-            108, 101, 32, 49,
-        ];
-
-        let ser = reg.try_to_vec().unwrap();
-        println!("Serialized reg {:?}", ser);
-
-        assert_eq!(ser, bytes);
-    }
-
-    #[test]
-    fn test_game_bundle() {
-        let game_bunle = GameBundle {
-            uri: "http://foo.bar".to_string(),
-            name: "Awesome Game".to_string(),
-            data: vec![1, 2, 3, 4],
-        };
-
-        let bytes = [
-            14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111, 111, 46, 98, 97, 114, 12, 0, 0,
-            0, 65, 119, 101, 115, 111, 109, 101, 32, 71, 97, 109, 101, 4, 0, 0, 0, 1, 2, 3, 4,
-        ];
-        let ser = game_bunle.try_to_vec().unwrap();
-        println!("Serialized game bundle {:?}", ser);
-
-        assert_eq!(ser, bytes);
-    }
-
-    #[test]
-    fn test_game_account() {
-        let game_account = GameAccount {
-            addr: "game addr".to_string(),
-            title: "awesome game title".to_string(),
-            bundle_addr: "bundle addr".to_string(),
-            token_addr: "token addr".to_string(),
-            owner_addr: "owner addr".to_string(),
-            settle_version: 10u64,
-            access_version: 20u64,
-            players: vec![
-                PlayerJoin {
-                    addr: "player 0".to_string(),
-                    balance: 3u64,
-                    position: 0u16,
-                    access_version: 19u64,
-                    verify_key: "VERIFY KEY".into(),
-                },
-                PlayerJoin {
-                    addr: "player 1".to_string(),
-                    balance: 6u64,
-                    position: 1u16,
-                    access_version: 21u64,
-                    verify_key: "VERIFY KEY".into(),
-                },
-            ],
-            deposits: vec![
-                PlayerDeposit {
-                    addr: "player 0".to_string(),
-                    amount: 9u64,
-                    settle_version: 21u64,
-                },
-                PlayerDeposit {
-                    addr: "player 1".to_string(),
-                    amount: 12u64,
-                    settle_version: 21u64,
-                },
-            ],
-            servers: vec![
-                ServerJoin {
-                    addr: "server 0".to_string(),
-                    endpoint: "http://foo.bar".to_string(),
-                    access_version: 17u64,
-                    verify_key: "VERIFY KEY".into(),
-                },
-                ServerJoin {
-                    addr: "server 1".to_string(),
-                    endpoint: "http://foo.bar".to_string(),
-                    access_version: 17u64,
-                    verify_key: "VERIFY KEY".into(),
-                },
-            ],
-            transactor_addr: Some("server 0".to_string()),
-            votes: vec![Vote {
-                voter: "server 1".to_string(),
-                votee: "server 0".to_string(),
-                vote_type: VoteType::ServerVoteTransactorDropOff,
-            }],
-            unlock_time: None,
-            max_players: 30u16,
-            data_len: 10u32,
-            data: vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
-            recipient_addr: "recipient".to_string(),
-            entry_type: EntryType::Cash {
-                min_deposit: 100,
-                max_deposit: 250,
-            },
-            checkpoint: vec![],
-            checkpoint_access_version: 0,
-        };
-        let bytes = [
-            9, 0, 0, 0, 103, 97, 109, 101, 32, 97, 100, 100, 114, 18, 0, 0, 0, 97, 119, 101, 115,
-            111, 109, 101, 32, 103, 97, 109, 101, 32, 116, 105, 116, 108, 101, 11, 0, 0, 0, 98,
-            117, 110, 100, 108, 101, 32, 97, 100, 100, 114, 10, 0, 0, 0, 116, 111, 107, 101, 110,
-            32, 97, 100, 100, 114, 10, 0, 0, 0, 111, 119, 110, 101, 114, 32, 97, 100, 100, 114, 10,
-            0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97,
-            121, 101, 114, 32, 48, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0,
-            0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32,
-            49, 1, 0, 6, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73,
-            70, 89, 32, 75, 69, 89, 2, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32, 48, 9,
-            0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114,
-            32, 49, 12, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 8, 0, 0, 0, 115,
-            101, 114, 118, 101, 114, 32, 48, 14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111,
-            111, 46, 98, 97, 114, 17, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73, 70, 89, 32,
-            75, 69, 89, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 49, 14, 0, 0, 0, 104, 116,
-            116, 112, 58, 47, 47, 102, 111, 111, 46, 98, 97, 114, 17, 0, 0, 0, 0, 0, 0, 0, 10, 0,
-            0, 0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 1, 8, 0, 0, 0, 115, 101, 114, 118, 101,
-            114, 32, 48, 1, 0, 0, 0, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 49, 8, 0, 0, 0,
-            115, 101, 114, 118, 101, 114, 32, 48, 0, 0, 30, 0, 10, 0, 0, 0, 10, 0, 0, 0, 0, 1, 2,
-            3, 4, 5, 6, 7, 8, 9, 0, 100, 0, 0, 0, 0, 0, 0, 0, 250, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0,
-            114, 101, 99, 105, 112, 105, 101, 110, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-        ];
-        let ser = game_account.try_to_vec().unwrap();
-        println!("Serialized game account {:?}", ser);
-
-        assert_eq!(ser, bytes);
-    }
-
-    #[test]
-    fn test_reg_account() {
-        let reg_account = RegistrationAccount {
-            addr: "DUMZU76rYgYkXuaCBB2m65USqeeCd1T1Gk2mpfgKKrS4".to_string(),
-            is_private: false,
-            size: 100,
-            owner: Some("J22ir2nLxVRqUrcpwMDBM47HpFCLLRrKFroF6LjK7DEA".to_string()),
-            games: vec![GameRegistration {
-                title: "My Raffle".to_string(),
-                addr: "DbsLWtwanc5VrGHH9FBqxTfhQA1XxCitsQCAcahade9r".to_string(),
-                reg_time: 1682425340u64,
-                bundle_addr: "96VJaPnUHuCGsvX1eACQPDU5R7WxwB2TxQY6CL947DqF".to_string(),
-            }],
-        };
-
-        let bytes = [
-            44, 0, 0, 0, 68, 85, 77, 90, 85, 55, 54, 114, 89, 103, 89, 107, 88, 117, 97, 67, 66,
-            66, 50, 109, 54, 53, 85, 83, 113, 101, 101, 67, 100, 49, 84, 49, 71, 107, 50, 109, 112,
-            102, 103, 75, 75, 114, 83, 52, 0, 100, 0, 1, 44, 0, 0, 0, 74, 50, 50, 105, 114, 50,
-            110, 76, 120, 86, 82, 113, 85, 114, 99, 112, 119, 77, 68, 66, 77, 52, 55, 72, 112, 70,
-            67, 76, 76, 82, 114, 75, 70, 114, 111, 70, 54, 76, 106, 75, 55, 68, 69, 65, 1, 0, 0, 0,
-            9, 0, 0, 0, 77, 121, 32, 82, 97, 102, 102, 108, 101, 44, 0, 0, 0, 68, 98, 115, 76, 87,
-            116, 119, 97, 110, 99, 53, 86, 114, 71, 72, 72, 57, 70, 66, 113, 120, 84, 102, 104, 81,
-            65, 49, 88, 120, 67, 105, 116, 115, 81, 67, 65, 99, 97, 104, 97, 100, 101, 57, 114,
-            252, 197, 71, 100, 0, 0, 0, 0, 44, 0, 0, 0, 57, 54, 86, 74, 97, 80, 110, 85, 72, 117,
-            67, 71, 115, 118, 88, 49, 101, 65, 67, 81, 80, 68, 85, 53, 82, 55, 87, 120, 119, 66,
-            50, 84, 120, 81, 89, 54, 67, 76, 57, 52, 55, 68, 113, 70,
-        ];
-        let der = RegistrationAccount::try_from_slice(&bytes).unwrap();
-        // let ser = reg_account.try_to_vec().unwrap();
-        assert_eq!(der, reg_account);
-    }
-}
diff --git a/core/src/types/broadcast_frame.rs b/core/src/types/broadcast_frame.rs
new file mode 100644
index 00000000..a9880988
--- /dev/null
+++ b/core/src/types/broadcast_frame.rs
@@ -0,0 +1,104 @@
+use crate::checkpoint::CheckpointOffChain;
+use crate::types::PlayerJoin;
+use borsh::{BorshDeserialize, BorshSerialize};
+use race_api::event::{Event, Message};
+use race_api::types::ServerJoin;
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+use std::fmt::Display;
+
+use super::TxState;
+
+#[derive(Default, Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct BroadcastSync {
+    pub new_players: Vec<PlayerJoin>,
+    pub new_servers: Vec<ServerJoin>,
+    pub transactor_addr: String,
+    pub access_version: u64,
+}
+
+impl BroadcastSync {
+    pub fn new(access_version: u64) -> Self {
+        Self {
+            access_version,
+            ..Default::default()
+        }
+    }
+
+    pub fn merge(&mut self, other: &Self) {
+        self.new_players.append(&mut other.new_players.clone());
+        self.new_servers.append(&mut other.new_servers.clone());
+        self.access_version = u64::max(self.access_version, other.access_version);
+        self.transactor_addr = other.transactor_addr.clone();
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct EventHistory {
+    pub event: Event,
+    pub timestamp: u64,
+    pub state_sha: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub enum BroadcastFrame {
+    // Game event
+    Event {
+        game_addr: String,
+        event: Event,
+        timestamp: u64,
+        state_sha: String,
+    },
+    // Arbitrary message
+    Message {
+        game_addr: String,
+        message: Message,
+    },
+    // Transaction state updates
+    TxState {
+        tx_state: TxState,
+    },
+    // Node state updates
+    Sync {
+        sync: BroadcastSync,
+    },
+    // This frame is the first frame in broadcast stream.
+    EventHistories {
+        game_addr: String,
+        checkpoint_off_chain: Option<CheckpointOffChain>,
+        histories: Vec<EventHistory>,
+        state_sha: String,
+    },
+}
+
+impl Display for BroadcastFrame {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            BroadcastFrame::Event { event, .. } => {
+                write!(f, "BroadcastFrame::Event: {}", event)
+            }
+            BroadcastFrame::Message { message, .. } => {
+                write!(f, "BroadcastFrame::Message: {}", message.sender)
+            }
+            BroadcastFrame::TxState { tx_state } => {
+                write!(f, "BroadcastFrame::TxState: {:?}", tx_state)
+            }
+            BroadcastFrame::Sync { sync } => {
+                write!(
+                    f,
+                    "BroadcastFrame::Sync: access_version {}",
+                    sync.access_version
+                )
+            }
+            BroadcastFrame::EventHistories { histories, .. } => {
+                write!(f, "BroadcastFrame::EventHistories, len: {}", histories.len())
+            }
+        }
+    }
+}
diff --git a/core/src/types/common.rs b/core/src/types/common.rs
index 87cc4b10..da1286fc 100644
--- a/core/src/types/common.rs
+++ b/core/src/types/common.rs
@@ -1,17 +1,30 @@
 use borsh::{BorshDeserialize, BorshSerialize};
+use race_api::prelude::InitAccount;
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 pub use race_api::types::*;
 
+use crate::context::Node;
+
 pub type SettleTransferCheckpoint = (Vec<Settle>, Vec<Transfer>, Vec<u8>);
 
-#[derive(Debug, PartialEq, Eq, Clone, Copy)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub enum ClientMode {
     Player,
     Transactor,
     Validator,
 }
 
+#[derive(Debug, PartialEq, Eq, Clone, Copy, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub enum GameMode {
+    Main,
+    Sub,
+}
+
 #[derive(Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Signature {
@@ -29,3 +42,49 @@ impl std::fmt::Display for Signature {
         )
     }
 }
+
+#[derive(Debug, Clone, BorshSerialize, BorshDeserialize)]
+pub struct SubGameSpec {
+    pub game_addr: String,
+    pub game_id: usize,
+    pub bundle_addr: String,
+    pub nodes: Vec<Node>,
+    pub access_version: u64,
+    pub settle_version: u64,
+    pub init_account: InitAccount,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct SettleWithAddr {
+    pub addr: String,
+    pub op: SettleOp,
+}
+
+impl SettleWithAddr {
+    pub fn add<S: Into<String>>(addr: S, amount: u64) -> Self {
+        Self {
+            addr: addr.into(),
+            op: SettleOp::Add(amount),
+        }
+    }
+    pub fn sub<S: Into<String>>(addr: S, amount: u64) -> Self {
+        Self {
+            addr: addr.into(),
+            op: SettleOp::Sub(amount),
+        }
+    }
+    pub fn eject<S: Into<String>>(addr: S) -> Self {
+        Self {
+            addr: addr.into(),
+            op: SettleOp::Eject,
+        }
+    }
+    pub fn assign<S: Into<String>>(addr: S, identifier: String) -> Self {
+        Self {
+            addr: addr.into(),
+            op: SettleOp::AssignSlot(identifier),
+        }
+    }
+}
diff --git a/core/src/types/storage_params.rs b/core/src/types/storage_params.rs
new file mode 100644
index 00000000..beb6a5b3
--- /dev/null
+++ b/core/src/types/storage_params.rs
@@ -0,0 +1,29 @@
+use borsh::{BorshDeserialize, BorshSerialize};
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+use crate::checkpoint::CheckpointOffChain;
+
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct SaveCheckpointParams {
+    pub game_addr: String,
+    pub settle_version: u64,
+    pub checkpoint: CheckpointOffChain,
+}
+
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct GetCheckpointParams {
+    pub game_addr: String,
+    pub settle_version: u64,
+}
+
+#[derive(Debug, BorshSerialize, BorshDeserialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct SaveResult {
+    pub proof: String,
+}
diff --git a/core/src/types/transactor_params.rs b/core/src/types/transactor_params.rs
index 91b9e821..9565229c 100644
--- a/core/src/types/transactor_params.rs
+++ b/core/src/types/transactor_params.rs
@@ -1,30 +1,23 @@
 //! Parameters for interacting with transactor
 
 use crate::encryptor::NodePublicKeyRaw;
-use crate::types::PlayerJoin;
 use borsh::{BorshDeserialize, BorshSerialize};
-use race_api::event::{Event, Message};
+use race_api::event::Event;
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 use std::fmt::Display;
 
 #[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-pub enum TxState {
-    PlayerConfirming {
-        confirm_players: Vec<PlayerJoin>,
-        access_version: u64,
-    },
-
-    PlayerConfirmingFailed(u64),
+pub struct AttachGameParams {
+    pub signer: String,
+    pub key: NodePublicKeyRaw,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct AttachGameParams {
-    pub signer: String,
-    pub key: NodePublicKeyRaw,
+pub struct CheckpointParams {
+    pub settle_version: u64,
 }
 
 impl Display for AttachGameParams {
@@ -84,36 +77,3 @@ impl Display for SubscribeEventParams {
         write!(f, "SubscribeEventParams")
     }
 }
-
-#[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub enum BroadcastFrame {
-    Event {
-        game_addr: String,
-        event: Event,
-        timestamp: u64,
-    },
-    Message {
-        game_addr: String,
-        message: Message,
-    },
-    TxState {
-        tx_state: TxState,
-    },
-}
-
-impl Display for BroadcastFrame {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            BroadcastFrame::Event { event, .. } => {
-                write!(f, "BroadcastFrame::Event: {}", event)
-            }
-            BroadcastFrame::Message { message, .. } => {
-                write!(f, "BroadcastFrame::Message: {}", message.sender)
-            }
-            BroadcastFrame::TxState { tx_state } => {
-                write!(f, "BroadcastFrame::TxState: {:?}", tx_state)
-            }
-        }
-    }
-}
diff --git a/core/src/types/transport_params.rs b/core/src/types/transport_params.rs
index b84db784..7ddbfbdc 100644
--- a/core/src/types/transport_params.rs
+++ b/core/src/types/transport_params.rs
@@ -4,8 +4,10 @@ use borsh::{BorshDeserialize, BorshSerialize};
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
-use race_api::types::{RecipientSlotOwner, RecipientSlotType, Settle};
-use super::{common::{EntryType, RecipientSlot, VoteType}, Transfer};
+use race_api::types::{RecipientSlotOwner, RecipientSlotType};
+use crate::checkpoint::CheckpointOnChain;
+
+use super::{common::{EntryType, RecipientSlot, VoteType}, Transfer, SettleWithAddr};
 
 #[derive(Debug, Clone, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -172,9 +174,9 @@ pub enum AssetChange {
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct SettleParams {
     pub addr: String,
-    pub settles: Vec<Settle>,
+    pub settles: Vec<SettleWithAddr>,
     pub transfers: Vec<Transfer>,
-    pub checkpoint: Vec<u8>,
+    pub checkpoint: CheckpointOnChain,
     pub settle_version: u64,
     pub next_settle_version: u64,
 }
diff --git a/core/src/types/tx_state.rs b/core/src/types/tx_state.rs
new file mode 100644
index 00000000..f2e79cf4
--- /dev/null
+++ b/core/src/types/tx_state.rs
@@ -0,0 +1,42 @@
+use crate::types::PlayerJoin;
+use borsh::{BorshDeserialize, BorshSerialize};
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct ConfirmingPlayer {
+    pub id: u64,
+    pub addr: String,
+    pub position: u16,
+    pub balance: u64,
+}
+
+impl From<PlayerJoin> for ConfirmingPlayer {
+    fn from(value: PlayerJoin) -> Self {
+        Self {
+            id: value.access_version,
+            addr: value.addr,
+            position: value.position,
+            balance: value.balance,
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, BorshDeserialize, BorshSerialize)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub enum TxState {
+    PlayerConfirming {
+        confirm_players: Vec<ConfirmingPlayer>,
+        access_version: u64,
+    },
+
+    PlayerConfirmingFailed(u64),
+
+    SettleSucceed {
+        settle_version: u64,
+        signature: Option<String>,
+    },
+}
diff --git a/dev/.gitignore b/dev/.gitignore
new file mode 100644
index 00000000..90d90cc7
--- /dev/null
+++ b/dev/.gitignore
@@ -0,0 +1 @@
+test.*.db
diff --git a/dev/Justfile b/dev/Justfile
new file mode 100644
index 00000000..43fcaf41
--- /dev/null
+++ b/dev/Justfile
@@ -0,0 +1,14 @@
+holdem-simple:
+    zellij --layout layouts/holdem-simple.kdl
+
+holdem-multi:
+    zellij --layout layouts/holdem-multi.kdl
+
+durak-simple:
+    zellij --layout layouts/durak-simple.kdl
+
+demo-app:
+    zellij --layout layouts/demo-app.kdl
+
+mtt-simple:
+    zellij --layout layouts/mtt-simple.kdl
diff --git a/dev/README.md b/dev/README.md
index 3f5350fe..ab730aa0 100644
--- a/dev/README.md
+++ b/dev/README.md
@@ -1,109 +1,3 @@
-# Prepare Solana development environment
+# Dev Scripts for Race Development
 
-## Load Metaplex into local test validator
-
-```bash
-solana program dump -u m metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s token_metadata_program.so
-
-# This will reset the test-ledger
-solana-test-validator --bpf-program metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s token_metadata_program.so --reset
-```
-
-## Create a token for testing
-
-```bash
-spl-token create-token
-
-spl-token create-account <TOKEN_ADDRESS>
-
-spl-token mint <TOKEN_ADDRESS> <AMOUNT>
-```
-We use this token for following tests.
-
-## Deploy RACE contract to solana localnet
-
-``` shell
-just solana
-```
-
-
-## Publish game bundle
-
-Uploaded NFT metadata on Arweave:
-
-- Chat: https://arweave.net/6SOGM007lgaeBH1SOJ-Ifm9eUUNz4kCdRqVJe-yl9_g
-- Raffle: https://arweave.net/hTlRRw2tZ2q_RpklixjRIzrR3PgAChBujAKzp6wknHs
-
-```shell
-just publish Chat https://arweave.net/6SOGM007lgaeBH1SOJ-Ifm9eUUNz4kCdRqVJe-yl9_g
-just publish Raffle https://arweave.net/hTlRRw2tZ2q_RpklixjRIzrR3PgAChBujAKzp6wknHs
-```
-
-NFT addresses will be returned when upload succeed. Later we will use this NFT token address as **bundle address**.
-
-## Create game registration
-
-```shell
-just create-reg
-```
-
-## Create game accounts
-
-To create games, a spec file in JSON is required. Replace the addresses with what you have, and save it as `spec.json`.
-
-```json
-{
-  "title": "<GAME TITLE>",
-  "reg_addr": "<REPLACE WITH THE REGISTRATION ADDRESS>",
-  "bundle_addr": "<REPLACE WITH THE BUNDLE ADDRESS>",
-  "token_addr": "<REPLACE WITH THE TOKEN ADDRESS>",
-  "max_players": 10,
-  "min_deposit": 10,
-  "max_deposit": 20,
-  "data": []
-}
-```
-
-Create the game account with command line tool.
-
-```shell
-just create-game spec.json
-```
-
-Game account address will be returned.
-
-## Generate a keypair for transactor
-
-```shell
-solana-keygen new -o transactor.json
-
-# Transfer some SOL to this new account
-solana transfer --allow-unfunded-recipient <TRANSACTOR PUBKEY> 2
-```
-
-## Create transactor configuration file
-
-```toml
-[transactor]
-port = 12003
-endpoint = "ws://localhost:12003"
-chain = "solana"
-address = "<REPLACE WITH GENERATED KEYPAIR'S PUBLIC KEY>"
-reg_addresses = ["<REPLACE WITH THE REGISTRATION ADDRESS>"]
-
-[solana]
-keyfile = /path/to/transactor.json
-rpc = "http://localhost:8899"
-```
-
-## Register server
-
-``` shell
-just dev-reg-transactor /path/to/transactor.toml
-```
-
-## Start transactor
-
-```shell
-just dev-transactor /path/to/transactor.toml
-```
+This folder contains the scripts and configurations for local development on Race Protocol.
diff --git a/dev/create-mtt-game.sh b/dev/create-mtt-game.sh
deleted file mode 100644
index ba54322b..00000000
--- a/dev/create-mtt-game.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-TIME=$(date +%s%3N)
-START_TIME=$(expr $TIME + 60000)
-echo "Current timestamp is $START_TIME"
-
-DATA=$(cd ./js/borsh; npx ts-node ./bin/cli.ts \
-                  -u64 "$START_TIME" \
-                  -u8 2 \
-                  -u64 10 \
-                  -u64 60000 \
-                  -u32 0)
-echo "DATA is $DATA"
-
-JSON=$(cat <<EOF
-{
-  "title": "MTT",
-  "bundle": "../race-holdem/target/race_holdem_mtt.wasm",
-  "token": "FACADE_USDC",
-  "maxPlayers": 10,
-  "entryType": {
-    "cash": {
-      "minDeposit": 5000,
-      "maxDeposit": 5000
-    }
-  },
-  "data": $DATA
-}
-EOF
-    )
-
-echo "$JSON"
-echo "$JSON" > /tmp/race-mtt-facade.json
-just dev-facade /tmp/race-mtt-facade.json
diff --git a/dev/game-specs/holdem-cash.json b/dev/game-specs/holdem-cash.json
new file mode 100644
index 00000000..146d2397
--- /dev/null
+++ b/dev/game-specs/holdem-cash.json
@@ -0,0 +1,13 @@
+{
+  "title": "Cash Table",
+  "bundle": "../race-holdem/target/race_holdem_cash.wasm",
+  "token": "FACADE_USDC",
+  "maxPlayers": 6,
+  "entryType": {
+    "cash": {
+      "minDeposit": 100000000,
+      "maxDeposit": 300000000
+    }
+  },
+  "data": [64,66,15,0,0,0,0,0,192,198,45,0,0,0,0,0,0,0,0,0,0,0,0,0,30,0,10,0]
+}
diff --git a/dev/holdem-multi.kdl b/dev/holdem-multi.kdl
deleted file mode 100644
index 14dfb8c3..00000000
--- a/dev/holdem-multi.kdl
+++ /dev/null
@@ -1,28 +0,0 @@
-// The layout to launch facade and 2 transactors in Zellij
-
-layout {
-  pane {
-    name "Facade"
-    focus true
-    cwd "./"
-    command "just"
-    args "dev-facade" "../race-holdem/cash/facade.json"
-    start_suspended true
-  }
-  pane split_direction="vertical" {
-    pane {
-      name "Transactor 1"
-      command "just"
-      cwd "./"
-      args "facade-transactor" "1"
-      start_suspended true
-    }
-    pane {
-      name "Transactor 2"
-      command "just"
-      cwd "./"
-      args "facade-transactor" "2"
-      start_suspended true
-    }
-  }
-}
diff --git a/dev/demo-app.kdl b/dev/layouts/demo-app.kdl
similarity index 65%
rename from dev/demo-app.kdl
rename to dev/layouts/demo-app.kdl
index 958ee67c..eff2d2e1 100644
--- a/dev/demo-app.kdl
+++ b/dev/layouts/demo-app.kdl
@@ -2,19 +2,19 @@
 
 layout {
   pane split_direction="horizontal" {
-    pane split_direction="vertical" {
+		pane split_direction="vertical" {
       pane {
         name "Facade"
         focus true
-        cwd "./"
+        cwd "../"
         command "just"
-        args "dev-facade" "examples/draw-card/facade.json"
+        args "dev-facade" "-g" "examples/draw-card/facade.json" "-g" "examples/raffle"
         start_suspended true
       }
       pane {
         name "Vite"
         focus true
-        cwd "./"
+        cwd "../"
         command "just"
         args "dev-demo-app"
       }
@@ -24,15 +24,15 @@ layout {
       pane {
           name "Transactor"
           command "just"
-          cwd "./"
-          args "facade-transactor" "1"
+          cwd "../"
+          args "dev-transactor" "dev/server-confs/server1.toml"
           start_suspended true
       }
       pane {
           name "Transactor"
           command "just"
-          cwd "./"
-          args "facade-transactor" "2"
+          cwd "../"
+          args "dev-transactor" "dev/server-confs/server2.toml"
           start_suspended true
       }
     }
diff --git a/dev/durak-simple.kdl b/dev/layouts/durak-simple.kdl
similarity index 66%
rename from dev/durak-simple.kdl
rename to dev/layouts/durak-simple.kdl
index 07ffa970..2b6a43c9 100644
--- a/dev/durak-simple.kdl
+++ b/dev/layouts/durak-simple.kdl
@@ -5,17 +5,17 @@ layout {
     pane {
       name "Facade"
       focus true
-      cwd "./"
+      cwd "../"
       command "just"
-      args "dev-facade" "../durak/conf/heads_up.json" "../durak/conf/3players.json"
+      args "dev-facade" "-g" "../durak/conf/heads_up.json" "-g" "../durak/conf/3players.json"
       start_suspended true
     }
     pane split_direction="horizontal" {
         pane {
             name "Transactor"
             command "just"
-            cwd "./"
-            args "facade-transactor" "1"
+            cwd "../"
+            args "dev-transactor" "dev/server-confs/server1.toml"
             start_suspended true
         }
         pane
diff --git a/dev/layouts/holdem-multi.kdl b/dev/layouts/holdem-multi.kdl
new file mode 100644
index 00000000..095405fd
--- /dev/null
+++ b/dev/layouts/holdem-multi.kdl
@@ -0,0 +1,28 @@
+// The layout to launch facade and 2 transactors in Zellij
+
+layout {
+		pane {
+			name "Facade"
+			focus true
+			cwd "../"
+		  command "bash"
+			args "dev/scripts/facade-cash-game.sh"
+			start_suspended true
+		}
+  pane split_direction="vertical" {
+    pane {
+      name "Transactor 1"
+      command "just"
+      cwd "../"
+      args "dev-transactor" "dev/server-confs/server1.toml"
+      start_suspended true
+    }
+    pane {
+      name "Transactor 2"
+      command "just"
+      cwd "../"
+      args "dev-transactor" "dev/server-confs/server2.toml"
+      start_suspended true
+    }
+  }
+}
diff --git a/dev/holdem-simple.kdl b/dev/layouts/holdem-simple.kdl
similarity index 54%
rename from dev/holdem-simple.kdl
rename to dev/layouts/holdem-simple.kdl
index 7dc584ff..d1810e13 100644
--- a/dev/holdem-simple.kdl
+++ b/dev/layouts/holdem-simple.kdl
@@ -2,20 +2,20 @@
 
 layout {
   pane split_direction="vertical" {
-    pane {
-      name "Facade"
-      focus true
-      cwd "./"
-      command "just"
-      args "dev-facade" "../race-holdem/cash/facade.json"
-      start_suspended true
-    }
+		pane {
+			name "Facade"
+			focus true
+			cwd "../"
+		  command "bash"
+			args "dev/scripts/facade-cash-game.sh"
+			start_suspended true
+		}
     pane split_direction="horizontal" {
         pane {
             name "Transactor"
             command "just"
-            cwd "./"
-            args "facade-transactor" "1"
+            cwd "../"
+            args "dev-transactor" "dev/server-confs/server1.toml"
             start_suspended true
         }
         pane
diff --git a/dev/mtt-simple.kdl b/dev/layouts/mtt-simple.kdl
similarity index 72%
rename from dev/mtt-simple.kdl
rename to dev/layouts/mtt-simple.kdl
index 9efb057d..6eac0bd4 100644
--- a/dev/mtt-simple.kdl
+++ b/dev/layouts/mtt-simple.kdl
@@ -5,17 +5,17 @@ layout {
     pane {
       name "Facade"
       focus true
-      cwd "./"
+      cwd "../"
       command "bash"
-      args "dev/create-mtt-game.sh"
+      args "dev/scripts/facade-mtt-game.sh"
       start_suspended true
     }
     pane split_direction="horizontal" {
         pane {
             name "Transactor"
             command "just"
-            cwd "./"
-            args "facade-transactor" "1"
+            cwd "../"
+            args "dev-transactor" "dev/server-confs/server1.toml"
             start_suspended true
         }
         pane
diff --git a/dev/prepare.sh b/dev/prepare.sh
deleted file mode 100755
index 15ea079d..00000000
--- a/dev/prepare.sh
+++ /dev/null
@@ -1,133 +0,0 @@
-#!/bin/bash
-
-SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
-
-set -e
-
-echo "Preparing the local environment..."
-echo "The keypair at $HOME/.config/solana/id.json will be used"
-echo "Create a SPL token for testing..."
-
-
-if solana config get | grep 'RPC URL: http://localhost:8899';
-then
-    echo "Confirmed LOCAL network is used"
-else
-    echo "Exit due to mainnet is used"
-    exit 1
-fi
-
-echo "Airdrop 10SOL..."
-solana airdrop 10
-
-TOKEN=$(spl-token create-token  --decimals 0 | grep 'Address' | awk '{print $2}')
-echo "Token: $TOKEN will be used for games"
-spl-token create-account "$TOKEN"
-spl-token mint $TOKEN 1000000
-
-mkdir -p dist
-echo "Generate game bundle NFT metadata..."
-cat <<EOF > dist/race_example_raffle_metadata.json
-{
- "name": "RACE Example Raffle",
- "symbol": "RACE",
- "description": "Example raffle game",
- "seller_fee_basis_points": 0,
- "image": "https://arweave.net/OQx85OOqT0oawKjCS9f5PowBF_5Y8hkJ8DI5fvMjd-s",
- "external_url": "",
- "attributes": [],
- "properties": {
-   "files": [
-     {
-       "uri": "https://arweave.net/OQx85OOqT0oawKjCS9f5PowBF_5Y8hkJ8DI5fvMjd-s",
-       "type": "image/png"
-     },
-     {
-       "uri": "http://127.0.0.1:8000/race_example_raffle.wasm",
-       "type": "application/wasm"
-     }
-   ],
-   "category": "image",
-   "creators": [
-     {
-       "address": "J22ir2nLxVRqUrcpwMDBM47HpFCLLRrKFroF6LjK7DEA",
-       "share": 100
-     }
-   ]
- }
-}
-EOF
-
-echo "Compile Raffle example..."
-just example-raffle
-cp ../target/race_example_raffle.wasm  dist/
-
-echo "Publishing WASM as game bundle NFT"
-BUNDLE=$(just publish Raffle 'http://127.0.0.1:8000/race_example_raffle_metadata.json' | grep 'Address' | awk '{print $2}')
-echo "Raffle is published as NFT at $BUNDLE"
-
-echo "Create registration center..."
-REG=$(just create-reg | grep 'Address' | awk '{print $2}')
-echo "Registration: $REG will be used"
-
-echo "Generate game spec..."
-cat <<EOF > dist/raffle.spec.json
-{
-  "title": "My Raffle",
-  "reg_addr": "$REG",
-  "bundle_addr": "$BUNDLE",
-  "token_addr": "$TOKEN",
-  "max_players": 10,
-  "min_deposit": 1,
-  "max_deposit": 2,
-  "data": []
-}
-EOF
-
-echo "Create game..."
-GAME=$(just create-game $SCRIPT_DIR/dist/raffle.spec.json | grep 'Address' | awk '{print $2}')
-echo "A game of raffle is created at $GAME"
-
-echo "Generate a keypair for transactor..."
-solana-keygen new -o dist/transactor-keypair.json --no-bip39-passphrase -s -f
-# solana airdrop 10 dist/transactor-keypair.json
-TRANSACTOR=$(solana-keygen pubkey dist/transactor-keypair.json)
-solana airdrop 10 dist/transactor-keypair.json --commitment finalized
-
-echo "Generate server configuration..."
-TX_PATH=$SCRIPT_DIR/dist/transactor-keypair.json
-cat <<EOF > dist/transactor.toml
-[transactor]
-port = 12003
-endpoint = "ws://localhost:12003"
-chain = "solana"
-address = "$TRANSACTOR"
-reg_addresses = ["$REG"]
-
-[solana]
-keyfile = "$TX_PATH"
-rpc = "http://localhost:8899"
-EOF
-
-echo "Create server account..."
-just dev-reg-transactor $SCRIPT_DIR/dist/transactor.toml
-
-echo "Generate demo-app-data..."
-cat <<EOF > dist/demo-app-data.json
-{
-  "CHAIN_TO_REG_ADDR": {
-    "solana-local": "$REG"
-  },
-  "CHAIN_ADDR_GAME_MAPPING": {
-    "solana-local": {
-       "$BUNDLE": "raffle"
-    }
-  }
-}
-EOF
-
-echo "That's it!
-Start a server to simulate AR storage and provide data for demo-app: simple-http-server --cors -- dist
-Now you can start the transactor with: just dev-transactor ${SCRIPT_DIR}/dist/transactor.toml
-And open the demo app with: just ts-sdk dev-sdk dev-demo-app
-"
diff --git a/dev/scripts/facade-cash-game.sh b/dev/scripts/facade-cash-game.sh
new file mode 100644
index 00000000..a5daee96
--- /dev/null
+++ b/dev/scripts/facade-cash-game.sh
@@ -0,0 +1,4 @@
+echo "Delete test db files"
+rm dev/test.*.db
+echo "Start facade server"
+just dev-facade -g dev/game-specs/holdem-cash.json
diff --git a/dev/scripts/facade-mtt-game.sh b/dev/scripts/facade-mtt-game.sh
new file mode 100644
index 00000000..83249571
--- /dev/null
+++ b/dev/scripts/facade-mtt-game.sh
@@ -0,0 +1,51 @@
+TIME=$(date +%s%3N)
+START_TIME=$(expr $TIME + 30000)
+TICKET=100000000
+TABLE_SIZE=3
+START_CHIPS=10000
+
+echo "Delete test db files"
+rm dev/test.*.db
+
+echo "Current timestamp is $START_TIME"
+echo "Ticket is $TICKET"
+echo "Table size is $TABLE_SIZE"
+echo "Start chips is $START_CHIPS"
+
+
+DATA=$(cd ./js/borsh; npx ts-node ./bin/cli.ts \
+                          -u64 "$START_TIME" \
+                          -u64 "$TICKET" \
+                          -u8 "$TABLE_SIZE" \
+                          -u64 "$START_CHIPS" \
+                          -u64 50 \
+                          -u64 60000 \
+                          -u32 0 \
+                          -u32 3 \
+                          -u8 50 \
+                          -u8 30 \
+                          -u8 20 \
+                          -u8 0)
+echo "DATA is $DATA"
+
+JSON=$(cat <<EOF
+{
+  "title": "MTT",
+  "bundle": "../race-holdem/target/race_holdem_mtt.wasm",
+  "token": "FACADE_USDC",
+  "maxPlayers": 10,
+  "entryType": {
+    "cash": {
+      "minDeposit": 100000000,
+      "maxDeposit": 100000000
+    }
+  },
+  "data": $DATA
+}
+EOF
+    )
+
+echo "$JSON"
+echo "$JSON" > /tmp/race-mtt-facade.json
+echo "Start facade server"
+just dev-facade -g /tmp/race-mtt-facade.json -b ../race-holdem/target/race_holdem_mtt_table.wasm
diff --git a/examples/conf/server1.toml b/dev/server-confs/server1.toml
similarity index 82%
rename from examples/conf/server1.toml
rename to dev/server-confs/server1.toml
index 8ca83997..0262d1a7 100644
--- a/examples/conf/server1.toml
+++ b/dev/server-confs/server1.toml
@@ -5,8 +5,12 @@ chain = "facade"
 address = "Server 1"
 reg_addresses = ["DEFAULT_REGISTRATION_ADDRESS"]
 disable_blacklist = true
+debug_mode = true
 
 [facade]
 host = "http://localhost:12002"
 registration_address = "DEFAULT_REGISTRATION_ADDRESS"
 address = "Server 1"
+
+[storage]
+db_file_name = "dev/test.1.db"
diff --git a/examples/conf/server2.toml b/dev/server-confs/server2.toml
similarity index 87%
rename from examples/conf/server2.toml
rename to dev/server-confs/server2.toml
index c40260f7..d0200dc4 100644
--- a/examples/conf/server2.toml
+++ b/dev/server-confs/server2.toml
@@ -10,3 +10,6 @@ disable_blacklist = true
 host = "http://localhost:12002"
 registration_address = "DEFAULT_REGISTRATION_ADDRESS"
 address = "Server 2"
+
+[storage]
+db_file_name = "dev/test.2.db"
diff --git a/encryptor/Cargo.toml b/encryptor/Cargo.toml
index 813ebeb8..cb9dc100 100644
--- a/encryptor/Cargo.toml
+++ b/encryptor/Cargo.toml
@@ -19,7 +19,7 @@ publish = true
 race-core = { workspace = true }
 race-api = { workspace = true }
 thiserror = { workspace = true }
-sha1 = { workspace = true }
+sha2 = { workspace = true }
 rand = { workspace = true }
 base64 = { workspace = true }
 arrayref = { workspace = true }
diff --git a/encryptor/src/lib.rs b/encryptor/src/lib.rs
index 9c291383..ff9f7b77 100644
--- a/encryptor/src/lib.rs
+++ b/encryptor/src/lib.rs
@@ -25,7 +25,7 @@ use race_core::types::{Ciphertext, SecretDigest, SecretKey};
 use race_core::encryptor::{EncryptorError, EncryptorResult, EncryptorT, NodePublicKeyRaw};
 use race_core::types::Signature;
 use rand::seq::SliceRandom;
-use sha1::{Digest, Sha1};
+use sha2::{Digest, Sha256};
 
 // Since we use different secrets for each encryption,
 // we can use a fixed IV.
@@ -360,7 +360,7 @@ impl EncryptorT for Encryptor {
     }
 
     fn digest(&self, text: &[u8]) -> SecretDigest {
-        Sha1::digest(text).to_vec()
+        Sha256::digest(text).to_vec()
     }
 
     fn export_public_key(&self, addr: Option<&str>) -> EncryptorResult<NodePublicKeyRaw> {
diff --git a/env/src/config.rs b/env/src/config.rs
index 15cdb660..b4a21d35 100644
--- a/env/src/config.rs
+++ b/env/src/config.rs
@@ -32,11 +32,18 @@ pub struct TransactorConfig {
     pub address: String,
     pub reg_addresses: Vec<String>,
     pub disable_blacklist: Option<bool>,
+    pub debug_mode: Option<bool>,
+}
+
+#[derive(Deserialize)]
+pub struct StorageConfig {
+    pub db_file_name: String,
 }
 
 #[derive(Deserialize)]
 pub struct Config {
     pub transactor: Option<TransactorConfig>,
+    pub storage: Option<StorageConfig>,
     pub facade: Option<FacadeConfig>,
     pub solana: Option<SolanaConfig>,
     pub bnb: Option<BnbConfig>,
diff --git a/examples/chat/Cargo.toml b/examples/chat/Cargo.toml
deleted file mode 100644
index 6aff5199..00000000
--- a/examples/chat/Cargo.toml
+++ /dev/null
@@ -1,16 +0,0 @@
-[package]
-name = "race-example-chat"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[lib]
-crate-type = ["cdylib"]
-
-[dependencies]
-race-core = { path = "../../core" }
-race-proc-macro = { path = "../../proc-macro" }
-serde_json = "1.0.85"
-serde = "1.0.144"
-borsh = "0.9.3"
diff --git a/examples/chat/chat_bundle_metadata.json b/examples/chat/chat_bundle_metadata.json
deleted file mode 100644
index 30dc031f..00000000
--- a/examples/chat/chat_bundle_metadata.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "name": "RACE Exampel Chat",
-  "symbol": "RACE",
-  "description": "Exameple chat game",
-  "seller_fee_basis_points": 0,
-  "image": "https://arweave.net/OQx85OOqT0oawKjCS9f5PowBF_5Y8hkJ8DI5fvMjd-s",
-  "external_url": "",
-  "attributes": [],
-  "properties": {
-    "files": [
-      {
-        "uri": "https://arweave.net/OQx85OOqT0oawKjCS9f5PowBF_5Y8hkJ8DI5fvMjd-s",
-        "type": "image/png"
-      },
-      {
-        "uri": "https://arweave.net/sd50KiTrdGzWdX9TQ_QHpGWmWe5ZgfSHTfnSYTXpmho",
-        "type": "application/wasm"
-      }
-    ],
-    "category": "image",
-    "creators": [
-      {
-        "address": "JDirZbxCJxb4GVeKaGbeZcsr7UgfLZQCCc11hFabT9pW",
-        "share": 100
-      }
-    ]
-  }
-}
diff --git a/examples/chat/src/lib.rs b/examples/chat/src/lib.rs
deleted file mode 100644
index a780c34f..00000000
--- a/examples/chat/src/lib.rs
+++ /dev/null
@@ -1,41 +0,0 @@
-use race_core::prelude::*;
-
-#[derive(Serialize, Deserialize)]
-enum GameEvent {
-    Message { text: String },
-}
-
-#[derive(Serialize, Deserialize, BorshSerialize, BorshDeserialize)]
-struct Message {
-    sender: String,
-    text: String,
-}
-
-#[derive(Serialize, Deserialize, BorshSerialize, BorshDeserialize)]
-#[game_handler]
-struct Chat {
-    messages: Vec<Message>,
-}
-
-impl GameHandler for Chat {
-    /// Initialize handler state with on-chain game account data.
-    fn init_state(context: &mut Effect, _init_account: InitAccount) -> Result<Self> {
-        Ok(Self { messages: vec![] })
-    }
-
-    /// Handle event.
-    fn handle_event(&mut self, _context: &mut Effect, event: Event) -> Result<()> {
-        match event {
-            Event::Custom { sender, raw } => {
-                let event: GameEvent = serde_json::from_str(&raw).or(Err(Error::JsonParseError))?;
-                match event {
-                    GameEvent::Message { text } => {
-                        self.messages.push(Message { sender, text });
-                    }
-                }
-            }
-            _ => (),
-        }
-        Ok(())
-    }
-}
diff --git a/examples/draw-card/src/integration_test.rs b/examples/draw-card/src/integration_test.rs
index dc6d2854..1763300f 100644
--- a/examples/draw-card/src/integration_test.rs
+++ b/examples/draw-card/src/integration_test.rs
@@ -4,98 +4,66 @@ use race_test::prelude::*;
 
 #[test]
 fn test() -> anyhow::Result<()> {
-    // Initialize player client, which simulates the behavior of player.
-    println!("Create test clients");
+    // Initialize player clients, which simulates the behavior of players.
     let mut alice = TestClient::player("Alice");
     let mut bob = TestClient::player("Bob");
 
     // Initialize the client, which simulates the behavior of transactor.
-    let mut transactor = TestClient::transactor("transactor");
+    let transactor_addr = "Transactor".to_string();
+    let mut transactor = TestClient::transactor(&transactor_addr);
 
-    // Initialize the game account, with 1 player joined.
-    // The game account must be served, so we add one server which is the transactor.
-    let account_data = AccountData {
+    // Initialize the test context, which 1 player joined.
+    // The game must be served by at least one server, so we add a transactor here.
+    let (mut ctx, _) = TestContextBuilder::default()
+        .with_data(AccountData {
         blind_bet: 100,
         min_bet: 100,
         max_bet: 1000,
-    };
-    println!("Create game account");
-    let game_account = TestGameAccountBuilder::default()
-        .set_transactor(&transactor)
-        .add_player(&alice, 10000)
-        .with_data(account_data)
-        .build();
-    let transactor_addr = game_account.transactor_addr.as_ref().unwrap().clone();
+        })
+        .with_max_players(2)
+        .set_transactor(&mut transactor)
+        .add_player(&mut alice, 10000)
+        .build_with_init_state::<DrawCard>()?;
 
-    // Create game context and test handler.
-    // Initalize the handler state with game account.
     // The game will not start since two players are required.
-    println!("Initialize handler state");
-    let mut ctx = GameContext::try_new(&game_account)?;
-    let mut handler = TestHandler::init_state(&mut ctx, &game_account)?;
-    assert_eq!(1, ctx.count_players());
-
-    // Start game
+    // Start game should fail
     println!("Start game, without players");
-    let first_event = ctx.gen_start_game_event();
-    let ret = handler.handle_event(&mut ctx, &first_event);
+    let ret = ctx.handle_event(&Event::GameStart);
     assert_eq!(ret, Err(Error::HandleError(HandleError::NoEnoughPlayers)));
 
     {
-        let state: &DrawCard = handler.get_state();
+        let state: &DrawCard = ctx.state();
         assert_eq!(0, state.bet);
     }
 
     // Another player joined the game.
     // Now we have enough players, an event of `GameStart` should be dispatched.
     println!("Player Bob join the game");
-    let av = ctx.get_access_version() + 1;
-    let sync_event = Event::Sync {
-        new_players: vec![PlayerJoin {
-            addr: "Bob".into(),
-            balance: 10000,
-            position: 1,
-            access_version: av,
-            verify_key: "".into(),
-        }],
-        new_servers: vec![],
-        transactor_addr: transactor.get_addr(),
-        access_version: av,
-    };
-
-    handler.handle_event(&mut ctx, &sync_event)?;
+    let join_event = ctx.join(&mut bob, 10000);
+    let ee = ctx.handle_event(&join_event)?;
 
     {
-        assert_eq!(2, ctx.count_players());
-        assert_eq!(GameStatus::Uninit, ctx.get_status());
-        assert_eq!(
-            Some(DispatchEvent::new(
-                Event::GameStart {
-                    access_version: ctx.get_access_version()
-                },
-                0
-            )),
-            *ctx.get_dispatch()
-        );
+        println!("State: {:?}", ctx.state());
+        assert!(ee.start_game);
     }
 
     // Now the dispatching event should be `GameStart`.
     // By handling this event, a random deck of cards should be created.
     println!("Start game");
-    handler.handle_dispatch_event(&mut ctx)?;
+    ctx.handle_dispatch_event()?;
     {
-        let state: &DrawCard = handler.get_state();
-        assert_eq!(GameStatus::Running, ctx.get_status());
+        let state: &DrawCard = ctx.state();
+        println!("State: {:?}", state);
         assert_eq!(1, state.random_id);
         assert_eq!(
             vec![
                 Player {
-                    addr: "Bob".into(),
+                    id: bob.id(),
                     balance: 10000,
                     bet: 0
                 },
                 Player {
-                    addr: "Alice".into(),
+                    id: alice.id(),
                     balance: 10000,
                     bet: 0
                 },
@@ -104,7 +72,7 @@ fn test() -> anyhow::Result<()> {
         );
         assert_eq!(
             RandomStatus::Masking(transactor_addr.clone()),
-            ctx.get_random_state_unchecked(1).status
+            ctx.random_state(1)?.status
         );
     }
 
@@ -114,52 +82,52 @@ fn test() -> anyhow::Result<()> {
     // Now, Let the client handle the updated context.
     // The corresponding secert state will be initialized, which contains all the secrets.
     // Additionally, one `Mask` event will be created.
-    let events = transactor.handle_updated_context(&ctx)?;
+    let events = ctx.client_events(&mut transactor)?;
     {
         assert_eq!(1, transactor.secret_state().list_random_secrets().len());
         assert_eq!(1, events.len());
     }
 
     // Send the mask event to handler, we expect the random status to be changed to `Locking`.
-    handler.handle_event(&mut ctx, &events[0])?;
+    ctx.handle_event(&events[0])?;
 
     {
         assert_eq!(
             RandomStatus::Locking(transactor_addr.clone()),
-            ctx.get_random_state_unchecked(1).status
+            ctx.random_state(1)?.status
         );
     }
 
     // Now, Let the client handle the updated context.
     // One `Lock` event will be created.
-    let events = transactor.handle_updated_context(&ctx)?;
+    let events = ctx.client_events(&mut transactor)?;
     {
         assert_eq!(1, events.len());
     }
 
     // Send the lock event to handler, we expect the random status to be changed to `Ready`.
     // Since all randomness is ready, an event of `RandomnessReady` will be dispatched.
-    handler.handle_event(&mut ctx, &events[0])?;
+    ctx.handle_event(&events[0])?;
 
     {
         assert_eq!(
             RandomStatus::Ready,
-            ctx.get_random_state_unchecked(1).status
+            ctx.random_state(1)?.status
         );
         assert_eq!(
             Some(DispatchEvent::new(
                 Event::RandomnessReady { random_id: 1 },
                 0
             )),
-            *ctx.get_dispatch()
+            ctx.current_dispatch()
         );
     }
 
     // Handle this dispatched `RandomnessReady`.
     // We expect each player to be assigned one card.
-    handler.handle_dispatch_event(&mut ctx)?;
+    ctx.handle_dispatch_event()?;
     {
-        let random_state = ctx.get_random_state_unchecked(1);
+        let random_state = ctx.random_state(1)?;
         let ciphertexts_for_alice = random_state.list_assigned_ciphertexts("Alice");
         let ciphertexts_for_bob = random_state.list_assigned_ciphertexts("Bob");
         assert_eq!(RandomStatus::WaitingSecrets, random_state.status);
@@ -170,42 +138,42 @@ fn test() -> anyhow::Result<()> {
     // Let client handle the updated context.
     // `ShareSecret` event should be created.
     println!("Transactor handle updated context, generate `ShareSecrets` event");
-    let events = transactor.handle_updated_context(&ctx)?;
+    let events = ctx.client_events(&mut transactor)?;
     {
         let event = &events[0];
         assert!(
-            matches!(event, Event::ShareSecrets { sender, shares } if sender.eq(&transactor_addr) && shares.len() == 2)
+            matches!(event, Event::ShareSecrets { sender, shares } if *sender == transactor.id() && shares.len() == 2)
         );
     }
 
     // Handle `ShareSecret` event.
     // Expect the random status to be changed to ready.
-    handler.handle_event(&mut ctx, &events[0])?;
+    ctx.handle_event(&events[0])?;
     {
         assert_eq!(
             RandomStatus::Ready,
-            ctx.get_random_state_unchecked(1).status
+            ctx.random_state(1)?.status
         );
-        let random_state = ctx.get_random_state_unchecked(1);
+        let random_state = ctx.random_state(1)?;
         assert_eq!(1, random_state.list_shared_secrets("Alice").unwrap().len());
         assert_eq!(1, random_state.list_shared_secrets("Bob").unwrap().len());
         assert_eq!(
             Some(DispatchEvent::new(Event::SecretsReady { random_ids: vec![1] }, 0)),
-            *ctx.get_dispatch()
+            ctx.current_dispatch()
         );
     }
 
     println!("Dispatch `SecretsReady` event, update game stage to `Betting`");
-    handler.handle_dispatch_event(&mut ctx)?;
+    ctx.handle_dispatch_event()?;
     {
-        let state = handler.get_state();
+        let state = ctx.state();
         assert_eq!(GameStage::Betting, state.stage);
     }
 
     // Now, client should be able to see their cards.
     println!("Checked assigned cards");
-    let alice_decryption = alice.decrypt(&ctx, 1)?;
-    let bob_decryption = bob.decrypt(&ctx, 1)?;
+    let alice_decryption = ctx.client_decrypt(&alice, 1)?;
+    let bob_decryption = ctx.client_decrypt(&bob, 1)?;
     {
         println!("Alice decryption: {:?}", alice_decryption);
         println!("Bob decryption: {:?}", bob_decryption);
@@ -213,23 +181,23 @@ fn test() -> anyhow::Result<()> {
         assert_eq!(1, bob_decryption.len());
     }
 
-    // Now, Alice is the first to act.
+    // Now, Bob is the first to act.
     // So, she can send a bet event and we expect the bet amount to be updated to 500.
     println!("Bob bets");
     let event = bob.custom_event(GameEvent::Bet(500));
-    handler.handle_event(&mut ctx, &event)?;
+    ctx.handle_event(&event)?;
     {
-        let state = handler.get_state();
+        let state = ctx.state();
         assert_eq!(500, state.bet);
     }
 
-    // Bob calls this.
+    // Alice calls this.
     // Now, it's time to reveal the cards, so two secrets for hands are required.
     println!("Alice calls");
     let event = alice.custom_event(GameEvent::Call);
-    handler.handle_event(&mut ctx, &event)?;
+    ctx.handle_event(&event)?;
     {
-        let random_state = ctx.get_random_state_unchecked(1);
+        let random_state = ctx.random_state(1)?;
         assert_eq!(
             2,
             random_state
@@ -240,59 +208,55 @@ fn test() -> anyhow::Result<()> {
 
     // Let the client handle this update.
     // We expect two secrets to be shared.
-    let events = transactor.handle_updated_context(&ctx)?;
+    let events = ctx.client_events(&mut transactor)?;
     {
         let event = &events[0];
         println!(
             "Required ident: {:?}",
-            ctx.get_random_state_unchecked(1)
+            ctx.random_state(1)?
                 .list_required_secrets_by_from_addr(&transactor_addr)
         );
         assert_eq!(
             2,
-            ctx.get_random_state_unchecked(1)
+            ctx.random_state(1)?
                 .list_required_secrets_by_from_addr(&transactor_addr)
                 .len()
         );
         assert!(
-            matches!(event, Event::ShareSecrets { sender, shares } if sender.eq(&transactor_addr) && shares.len() == 2)
+            matches!(event, Event::ShareSecrets { sender, shares } if *sender == transactor.id() && shares.len() == 2)
         );
     }
 
     // Handle `ShareSecret` event.
     println!("Dispatch ShareSecret event.");
-    handler.handle_event(&mut ctx, &events[0])?;
+
+    ctx.handle_event(&events[0])?;
     {
         println!(
             "Required ident: {:?}",
-            ctx.get_random_state_unchecked(1)
+            ctx.random_state(1)?
                 .list_required_secrets_by_from_addr(&transactor_addr)
         );
         assert_eq!(
             0,
-            ctx.get_random_state_unchecked(1)
+            ctx.random_state(1)?
                 .list_required_secrets_by_from_addr(&transactor_addr)
                 .len()
         );
         assert_eq!(
             Some(DispatchEvent::new(Event::SecretsReady { random_ids: vec![1] }, 0)),
-            *ctx.get_dispatch()
+            ctx.current_dispatch()
         );
     }
 
     // Now, the transactor should be able to reveal all hole cards.
-    let decryption = transactor.decrypt(&ctx, 1)?;
+    let decryption = ctx.client_decrypt(&transactor, 1)?;
     println!("Decryption: {:?}", decryption);
-    println!("Secrets Ready Event: {:?}", ctx.get_dispatch());
+    println!("Secrets Ready Event: {:?}", ctx.current_dispatch());
     assert_eq!(2, decryption.len());
 
     // Now send `SecretReady` to handler.
-    handler.handle_dispatch_event(&mut ctx)?;
-    {
-        assert!(matches!(ctx.get_settles(),
-                         Some(settles) if settles.len() == 2
-        ));
-    }
+    ctx.handle_dispatch_event()?;
 
     Ok(())
 }
diff --git a/examples/draw-card/src/lib.rs b/examples/draw-card/src/lib.rs
index cd5e11d6..994ef188 100644
--- a/examples/draw-card/src/lib.rs
+++ b/examples/draw-card/src/lib.rs
@@ -13,7 +13,7 @@ use race_api::prelude::*;
 use race_proc_macro::game_handler;
 
 const ACTION_TIMEOUT: u64 = 30_000;
-const NEXT_GAME_TIMEOUT: u64 = 15_000;
+const NEXT_GAME_TIMEOUT: u64 = 3000;
 
 #[derive(BorshSerialize, BorshDeserialize)]
 pub enum GameEvent {
@@ -44,7 +44,7 @@ pub enum GameStage {
 #[cfg_attr(test, derive(Debug, PartialEq, Eq))]
 #[derive(BorshSerialize, BorshDeserialize)]
 pub struct Player {
-    pub addr: String,
+    pub id: u64,
     pub balance: u64,
     pub bet: u64,
 }
@@ -64,9 +64,6 @@ pub struct DrawCard {
     pub max_bet: u64,
 }
 
-#[derive(BorshSerialize, BorshDeserialize)]
-pub struct DrawCardCheckpoint {}
-
 impl DrawCard {
     fn set_winner(&mut self, effect: &mut Effect, winner_index: usize) -> Result<(), HandleError> {
         let players = array_mut_ref![self.players, 0, 2];
@@ -75,12 +72,12 @@ impl DrawCard {
         let player_1 = &mut player_1[0];
 
         if winner_index == 0 {
-            effect.settle(Settle::add(&player_0.addr, self.pot - player_0.bet));
-            effect.settle(Settle::sub(&player_1.addr, player_1.bet));
+            effect.settle(Settle::add(player_0.id, self.pot - player_0.bet))?;
+            effect.settle(Settle::sub(player_1.id, player_1.bet))?;
             player_0.balance += self.pot;
         } else {
-            effect.settle(Settle::add(&player_1.addr, self.pot - player_1.bet));
-            effect.settle(Settle::sub(&player_0.addr, player_0.bet));
+            effect.settle(Settle::add(player_1.id, self.pot - player_1.bet))?;
+            effect.settle(Settle::sub(player_0.id, player_0.bet))?;
             player_1.balance += self.pot;
         }
 
@@ -92,7 +89,7 @@ impl DrawCard {
     fn custom_handle_event(
         &mut self,
         effect: &mut Effect,
-        sender: String,
+        sender: u64,
         event: GameEvent,
     ) -> Result<(), HandleError> {
         match event {
@@ -102,7 +99,7 @@ impl DrawCard {
                         .players
                         .get_mut(0)
                         .ok_or(HandleError::Custom("Player not found".into()))?;
-                    if sender.ne(&player.addr) {
+                    if sender != player.id {
                         return Err(HandleError::InvalidPlayer);
                     }
                     if amount < self.min_bet || amount > self.max_bet || amount > player.balance {
@@ -113,7 +110,7 @@ impl DrawCard {
                     self.bet = amount;
                     self.pot += amount;
                     self.stage = GameStage::Reacting;
-                    effect.action_timeout(player.addr.clone(), ACTION_TIMEOUT);
+                    effect.action_timeout(player.id.clone(), ACTION_TIMEOUT)?;
                 } else {
                     return Err(HandleError::Custom("Can't bet".into()));
                 }
@@ -124,7 +121,7 @@ impl DrawCard {
                         .players
                         .get_mut(1)
                         .ok_or(HandleError::Custom("Player not found".into()))?;
-                    if sender.ne(&player.addr) {
+                    if sender.ne(&player.id) {
                         return Err(HandleError::InvalidPlayer);
                     }
                     if self.bet > player.balance {
@@ -172,8 +169,6 @@ fn is_better_than(card_a: &str, card_b: &str) -> bool {
 
 impl GameHandler for DrawCard {
 
-    type Checkpoint = DrawCardCheckpoint;
-
     fn init_state(_effect: &mut Effect, init_account: InitAccount) -> Result<Self, HandleError> {
         let AccountData {
             blind_bet,
@@ -184,7 +179,7 @@ impl GameHandler for DrawCard {
             .players
             .into_iter()
             .map(|p| Player {
-                addr: p.addr,
+                id: p.id,
                 balance: p.balance,
                 bet: 0,
             })
@@ -214,18 +209,18 @@ impl GameHandler for DrawCard {
             // Waiting timeout usually sent after each game.  Here we
             // can trigger the next game.
             Event::WaitingTimeout => {
-                if effect.count_players() == 2 {
+                if self.players.len() == 2 {
                     effect.start_game();
                 }
             }
 
             // Reset current game state.  Set up randomness
             Event::GameStart { .. } => {
-                if effect.count_players() < 2 {
+                if self.players.len() < 2 {
                     return Err(HandleError::NoEnoughPlayers);
                 }
 
-                if effect.servers_count == 0 {
+                if effect.count_nodes() == 0 {
                     return Err(HandleError::NoEnoughServers);
                 }
 
@@ -243,15 +238,15 @@ impl GameHandler for DrawCard {
             }
 
             Event::RandomnessReady { .. } => {
-                effect.assign(self.random_id, &self.players[0].addr, vec![0]);
-                effect.assign(self.random_id, &self.players[1].addr, vec![1]);
+                effect.assign(self.random_id, self.players[0].id, vec![0])?;
+                effect.assign(self.random_id, self.players[1].id, vec![1])?;
             }
 
             // Start game when there are two players.
-            Event::Sync { new_players, .. } => {
-                for p in new_players.into_iter() {
+            Event::Join { players } => {
+                for p in players.into_iter() {
                     self.players.push(Player {
-                        addr: p.addr,
+                        id: p.id,
                         balance: p.balance,
                         bet: 0,
                     });
@@ -268,7 +263,7 @@ impl GameHandler for DrawCard {
                         // Now it's the first player's turn to act.
                         // So we dispatch an action timeout event.
                         self.stage = GameStage::Betting;
-                        effect.action_timeout(self.players[0].addr.clone(), ACTION_TIMEOUT);
+                        effect.action_timeout(self.players[0].id.clone(), ACTION_TIMEOUT)?;
                         effect.allow_exit(true);
                     }
                     GameStage::Revealing => {
@@ -291,11 +286,11 @@ impl GameHandler for DrawCard {
                 }
             }
 
-            Event::Leave { player_addr } => {
-                if let Some(player_idx) = self.players.iter().position(|p| p.addr.eq(&player_addr))
+            Event::Leave { player_id } => {
+                if let Some(player_idx) = self.players.iter().position(|p| p.id.eq(&player_id))
                 {
                     self.set_winner(effect, if player_idx == 0 { 1 } else { 0 })?;
-                    effect.settle(Settle::eject(player_addr));
+                    effect.settle(Settle::eject(player_id))?;
                     effect.checkpoint();
                 } else {
                     return Err(HandleError::InvalidPlayer);
@@ -306,10 +301,6 @@ impl GameHandler for DrawCard {
 
         Ok(())
     }
-
-    fn into_checkpoint(self) -> HandleResult<DrawCardCheckpoint> {
-        Ok(DrawCardCheckpoint {})
-    }
 }
 
 #[cfg(test)]
@@ -325,7 +316,7 @@ mod tests {
             max_bet: 1000,
         };
 
-        let data = account_data.try_to_vec().unwrap();
+        let data = borsh::to_vec(&account_data).unwrap();
         println!("data: {:?}", data);
         println!("data len: {}", data.len());
     }
diff --git a/examples/minimal/minimal.wasm b/examples/minimal/minimal.wasm
index dfd8a700..0ff34735 100644
Binary files a/examples/minimal/minimal.wasm and b/examples/minimal/minimal.wasm differ
diff --git a/examples/minimal/src/lib.rs b/examples/minimal/src/lib.rs
index 639c6e8d..6175555b 100644
--- a/examples/minimal/src/lib.rs
+++ b/examples/minimal/src/lib.rs
@@ -19,11 +19,6 @@ struct Minimal {
     n: u64,
 }
 
-#[derive(BorshDeserialize, BorshSerialize)]
-pub struct MinimalCheckpoint {
-    n: u64
-}
-
 impl Minimal {
     fn handle_custom_event(&mut self, event: MinimalEvent) -> Result<(), HandleError> {
         match event {
@@ -34,9 +29,11 @@ impl Minimal {
 }
 
 impl GameHandler for Minimal {
-    type Checkpoint = MinimalCheckpoint;
 
     fn init_state(_effect: &mut Effect, init_account: InitAccount) -> Result<Self, HandleError> {
+        if let Some(checkpoint) = init_account.checkpoint()? {
+            return Ok(checkpoint);
+        }
         let account_data: MinimalAccountData = init_account.data()?;
         Ok(Self {
             n: account_data.init_n,
@@ -52,8 +49,4 @@ impl GameHandler for Minimal {
             _ => Ok(()),
         }
     }
-
-    fn into_checkpoint(self) -> Result<MinimalCheckpoint, HandleError> {
-        Ok(MinimalCheckpoint { n: self.n })
-    }
 }
diff --git a/examples/raffle/facade.json b/examples/raffle/facade.json
index 169c0ff2..383a884a 100644
--- a/examples/raffle/facade.json
+++ b/examples/raffle/facade.json
@@ -1,9 +1,13 @@
 {
-  "title": "1RACE Raffle",
+  "title": "Simple Raffle",
   "bundle": "target/race_example_raffle.wasm",
   "token": "FACADE_USDT",
   "max_players": 6,
-  "min_deposit": 100,
-  "max_deposit": 100,
+  "entryType": {
+    "cash": {
+      "min_deposit": 100,
+      "max_deposit": 100
+    }
+  },
   "data": []
 }
diff --git a/examples/raffle/src/lib.rs b/examples/raffle/src/lib.rs
index bc2a5d44..3dc85de2 100644
--- a/examples/raffle/src/lib.rs
+++ b/examples/raffle/src/lib.rs
@@ -12,14 +12,14 @@ const DRAW_TIMEOUT: u64 = 30_000;
 #[cfg_attr(test, derive(Debug, PartialEq, Eq))]
 #[derive(BorshSerialize, BorshDeserialize)]
 struct Player {
-    pub addr: String,
+    pub id: u64,
     pub balance: u64,
 }
 
-impl From<PlayerJoin> for Player {
-    fn from(value: PlayerJoin) -> Self {
+impl From<GamePlayer> for Player {
+    fn from(value: GamePlayer) -> Self {
         Self {
-            addr: value.addr,
+            id: value.id,
             balance: value.balance,
         }
     }
@@ -28,7 +28,7 @@ impl From<PlayerJoin> for Player {
 #[derive(BorshSerialize, BorshDeserialize)]
 #[game_handler]
 struct Raffle {
-    last_winner: Option<String>,
+    last_winner: Option<u64>,
     players: Vec<Player>,
     random_id: RandomId,
     draw_time: u64,
@@ -44,8 +44,6 @@ impl Raffle {
 
 impl GameHandler for Raffle {
 
-    type Checkpoint = ();
-
     /// Initialize handler state with on-chain game account data.
     fn init_state(_effect: &mut Effect, init_account: InitAccount) -> HandleResult<Self> {
         let players = init_account.players.into_iter().map(Into::into).collect();
@@ -63,15 +61,15 @@ impl GameHandler for Raffle {
         match event {
             Event::GameStart { .. } => {
                 // We need at least one player to start, otherwise we will skip this draw.
-                if effect.count_players() >= 1 {
-                    let options = self.players.iter().map(|p| p.addr.to_owned()).collect();
+                if self.players.len() >= 1 {
+                    let options = self.players.iter().map(|p| p.id.to_string()).collect();
                     let rnd_spec = RandomSpec::shuffled_list(options);
                     self.random_id = effect.init_random_state(rnd_spec);
                 }
             }
 
-            Event::Sync { new_players, .. } => {
-                let players = new_players.into_iter().map(Into::into);
+            Event::Join { players } => {
+                let players = players.into_iter().map(Into::into);
                 self.players.extend(players);
                 if self.players.len() >= 1 && self.draw_time == 0 {
                     self.draw_time = effect.timestamp() + DRAW_TIMEOUT;
@@ -79,7 +77,7 @@ impl GameHandler for Raffle {
                 }
             }
 
-            // Reveal the first address when randomness is ready.
+            // Reveal the first idess when randomness is ready.
             Event::RandomnessReady { .. } => {
                 effect.reveal(self.random_id, vec![0]);
             }
@@ -101,14 +99,15 @@ impl GameHandler for Raffle {
                     .get_revealed(self.random_id)?
                     .get(&0)
                     .unwrap()
-                    .to_owned();
+                    .parse::<u64>()
+                    .unwrap();
 
                 for p in self.players.iter() {
-                    if p.addr.ne(&winner) {
-                        effect.settle(Settle::add(&winner, p.balance));
-                        effect.settle(Settle::sub(&p.addr, p.balance));
+                    if p.id != winner {
+                        effect.settle(Settle::add(winner, p.balance))?;
+                        effect.settle(Settle::sub(p.id, p.balance))?;
                     }
-                    effect.settle(Settle::eject(&p.addr));
+                    effect.settle(Settle::eject(p.id))?;
                 }
                 self.last_winner = Some(winner);
                 self.cleanup();
@@ -117,10 +116,6 @@ impl GameHandler for Raffle {
         }
         Ok(())
     }
-
-    fn into_checkpoint(self) -> HandleResult<()> {
-        Ok(())
-    }
 }
 
 #[cfg(test)]
@@ -146,26 +141,12 @@ mod tests {
             players: vec![],
             random_id: 0,
         };
-        let event = Event::Sync {
-            new_players: vec![PlayerJoin {
-                addr: "alice".into(),
-                position: 0,
-                balance: 100,
-                access_version: 0,
-                verify_key: "".into(),
-            }],
-            new_servers: vec![ServerJoin {
-                addr: "foo".into(),
-                endpoint: "foo.endpoint".into(),
-                access_version: 0,
-                verify_key: "".into(),
-            }],
-            transactor_addr: "".into(),
-            access_version: 0,
+        let event = Event::Join {
+            players: vec![GamePlayer::new(0, 100, 0), GamePlayer::new(1, 100, 1)],
         };
 
         state.handle_event(&mut effect, event).unwrap();
-        assert_eq!(state.players.len(), 1);
+        assert_eq!(state.players.len(), 2);
         assert_eq!(effect.wait_timeout, Some(DRAW_TIMEOUT));
     }
 }
diff --git a/examples/simple-settle/src/lib.rs b/examples/simple-settle/src/lib.rs
index 9bfd4b7f..2d258de6 100644
--- a/examples/simple-settle/src/lib.rs
+++ b/examples/simple-settle/src/lib.rs
@@ -10,7 +10,7 @@ use std::collections::BTreeMap;
 #[game_handler]
 #[derive(BorshSerialize, BorshDeserialize)]
 struct SimpleSettle {
-    players: BTreeMap<String, u64>,
+    players: BTreeMap<u64, u64>,
 }
 
 #[derive(BorshSerialize, BorshDeserialize)]
@@ -24,11 +24,11 @@ impl SimpleSettle {
         if self.players.len() > 1 {
             let (ref winner, _) = self.players.pop_first().unwrap();
             let win: u64 = self.players.values().sum();
-            effect.settle(Settle::add(winner, win));
-            effect.settle(Settle::eject(winner));
+            effect.settle(Settle::add(*winner, win));
+            effect.settle(Settle::eject(*winner));
             for p in self.players.iter() {
-                effect.settle(Settle::sub(p.0, *p.1));
-                effect.settle(Settle::eject(p.0));
+                effect.settle(Settle::sub(*p.0, *p.1));
+                effect.settle(Settle::eject(*p.0));
             }
             self.players.clear();
         } else {
@@ -45,7 +45,7 @@ impl GameHandler for SimpleSettle {
         let players = init_account
             .players
             .into_iter()
-            .map(|p| (p.addr, p.balance))
+            .map(|p| (p.id, p.balance))
             .collect();
         let mut ins = Self { players };
         ins.maybe_settle(effect)?;
@@ -54,9 +54,9 @@ impl GameHandler for SimpleSettle {
 
     fn handle_event(&mut self, effect: &mut Effect, event: Event) -> Result<(), HandleError> {
         match event {
-            Event::Sync { new_players, .. } => {
-                for p in new_players {
-                    self.players.insert(p.addr, p.balance);
+            Event::Join { players, .. } => {
+                for p in players {
+                    self.players.insert(p.id, p.balance);
                 }
                 self.maybe_settle(effect)?;
                 Ok(())
@@ -65,7 +65,7 @@ impl GameHandler for SimpleSettle {
         }
     }
 
-    fn into_checkpoint(self) -> Result<Checkpoint, HandleError> {
+    fn checkpoint(self) -> Result<Checkpoint, HandleError> {
         Ok(Checkpoint {})
     }
 }
@@ -74,22 +74,23 @@ impl GameHandler for SimpleSettle {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use race_test::prelude::sync_new_players;
 
     #[test]
     pub fn test_settle() {
         let mut effect = Effect::default();
-        let event = sync_new_players(&[
-            ("alice", 0, 100),
-            ("bob", 1, 100)
-        ], 1);
+        let event = Event::Join {
+            players: vec![
+                GamePlayer::new(0, 100, 0),
+                GamePlayer::new(1, 100, 1),
+            ]
+        };
         let mut handler = SimpleSettle::init_state(&mut effect, InitAccount::default()).unwrap();
         handler.handle_event(&mut effect, event).unwrap();
         assert_eq!(effect.settles, vec![
-            Settle::add("alice", 100),
-            Settle::eject("alice"),
-            Settle::sub("bob", 100),
-            Settle::eject("bob"),
+            Settle::add(0, 100),
+            Settle::eject(0),
+            Settle::sub(1, 100),
+            Settle::eject(1),
         ]);
     }
 }
diff --git a/facade/src/main.rs b/facade/src/main.rs
index 44dac093..14ca44c5 100644
--- a/facade/src/main.rs
+++ b/facade/src/main.rs
@@ -2,7 +2,7 @@
 //! It is supposed to be used for testing and developing.
 
 use borsh::BorshSerialize;
-use clap::Parser;
+use clap::{arg, Command};
 use hyper::Method;
 use jsonrpsee::server::{AllowHosts, ServerBuilder, ServerHandle};
 use jsonrpsee::types::Params;
@@ -10,8 +10,8 @@ use jsonrpsee::{core::Error as RpcError, RpcModule};
 use race_api::error::Error;
 use race_core::types::{
     DepositParams, EntryType, GameAccount, GameBundle, GameRegistration, PlayerDeposit, PlayerJoin,
-    PlayerProfile, RecipientSlot, RegistrationAccount, ServerAccount, ServerJoin, SettleOp,
-    SettleParams, TokenAccount, Vote, VoteParams, VoteType,
+    PlayerProfile, RecipientAccount, RecipientSlot, RegistrationAccount, ServerAccount, ServerJoin,
+    SettleOp, SettleParams, TokenAccount, Vote, VoteParams, VoteType,
 };
 use regex::Regex;
 use serde::Deserialize;
@@ -20,7 +20,7 @@ use std::fs::File;
 use std::io::Read;
 use std::net::SocketAddr;
 use std::sync::Arc;
-use std::time::{Duration, UNIX_EPOCH};
+use std::time::UNIX_EPOCH;
 use tokio::sync::Mutex;
 use tower::ServiceBuilder;
 use tower_http::cors::{Any, CorsLayer};
@@ -116,6 +116,7 @@ pub struct Context {
     servers: HashMap<String, ServerAccount>,
     games: HashMap<String, GameAccount>,
     bundles: HashMap<String, GameBundle>,
+    recipients: HashMap<String, RecipientAccount>,
 }
 
 #[derive(Clone, BorshSerialize)]
@@ -135,9 +136,15 @@ pub struct PlayerInfo {
 }
 
 impl Context {
-    pub fn load_games(&mut self, spec_paths: Vec<String>) {
-        for spec_path in spec_paths.into_iter() {
-            self.add_game(&spec_path);
+    pub fn load_games(&mut self, spec_paths: &[&str]) {
+        for spec_path in spec_paths.iter() {
+            self.add_game(spec_path);
+        }
+    }
+
+    pub fn load_bundles(&mut self, bundle_paths: &[&str]) {
+        for bundle_path in bundle_paths.iter() {
+            self.add_bundle(bundle_path)
         }
     }
 
@@ -177,6 +184,21 @@ impl Context {
         });
     }
 
+    fn add_bundle(&mut self, bundle_path: &str) {
+        let re = Regex::new(r"[^a-zA-Z0-9]").unwrap();
+        let bundle_addr = re.replace_all(&bundle_path, "").into_owned();
+        let mut f = File::open(bundle_path).expect(&format!("Bundle {} not found", &bundle_path));
+        let mut data = vec![];
+        f.read_to_end(&mut data).unwrap();
+        let bundle = GameBundle {
+            name: bundle_addr.clone(),
+            uri: "".into(),
+            data,
+        };
+        self.bundles.insert(bundle_addr.clone(), bundle);
+        println!("+ Bundle: {}", bundle_addr);
+    }
+
     fn add_game(&mut self, spec_path: &str) {
         let f = File::open(spec_path).expect("Spec file not found");
         let GameSpec {
@@ -191,6 +213,7 @@ impl Context {
         let re = Regex::new(r"[^a-zA-Z0-9]").unwrap();
         let bundle_addr = re.replace_all(&bundle, "").into_owned();
         let game_addr = re.replace_all(&spec_path, "").into_owned();
+        let recipient_addr = format!("{}_recipient", game_addr);
         let mut f = File::open(&bundle).expect(&format!("Bundle {} not found", &bundle));
         let mut data = vec![];
         f.read_to_end(&mut data).unwrap();
@@ -210,8 +233,13 @@ impl Context {
             entry_type,
             ..Default::default()
         };
+        let recipient = RecipientAccount {
+            addr: recipient_addr.clone(),
+            ..Default::default()
+        };
         self.bundles.insert(bundle_addr.clone(), bundle);
         self.games.insert(game_addr.clone(), game);
+        self.recipients.insert(recipient_addr.clone(), recipient);
         println!("! Load game from `{}`", spec_path);
         println!("+ Game: {}", game_addr);
         println!("+ Bundle: {}", bundle_addr);
@@ -229,7 +257,7 @@ async fn get_game_bundle(
     let addr: String = params.one()?;
     let context = context.lock().await;
     if let Some(bundle) = context.bundles.get(&addr) {
-        Ok(Some(bundle.to_owned().try_to_vec().unwrap()))
+        Ok(borsh::to_vec(&bundle).ok())
     } else {
         println!("? get_game_bundle, addr: {}, not found", addr);
         Ok(None)
@@ -253,15 +281,14 @@ async fn get_registration_info(
         })
         .collect();
     Ok(Some(
-        RegistrationAccount {
+        borsh::to_vec(&RegistrationAccount {
             addr,
             is_private: false,
             size: 100,
             owner: None,
             games,
-        }
-        .try_to_vec()
-        .unwrap(),
+        })
+            .unwrap(),
     ))
 }
 
@@ -299,6 +326,20 @@ async fn join(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<()>
                     return Err(custom_error(Error::PlayerAlreadyJoined(player_addr)));
                 } else {
                     game_account.access_version += 1;
+                    // Find available position
+                    let mut pos_list = vec![position];
+                    pos_list.extend(0..100);
+                    let position = pos_list
+                        .into_iter()
+                        .find(|p| {
+                            game_account
+                                .players
+                                .iter()
+                                .find(|player| player.position == *p)
+                                .is_none()
+                        })
+                        .unwrap();
+
                     let player_join = PlayerJoin {
                         addr: player_addr.clone(),
                         position,
@@ -322,6 +363,8 @@ async fn join(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<()>
             EntryType::Ticket { slot_id, amount } => todo!(),
             #[allow(unused)]
             EntryType::Gating { collection } => todo!(),
+            #[allow(unused)]
+            EntryType::Disabled => todo!(),
         }
     } else {
         return Err(custom_error(Error::GameAccountNotFound));
@@ -370,7 +413,7 @@ async fn get_server_info(
     let addr: String = params.one()?;
     let context = context.lock().await;
     if let Some(server) = context.servers.get(&addr) {
-        Ok(Some(server.to_owned().try_to_vec().unwrap()))
+        Ok(Some(borsh::to_vec(&server).unwrap()))
     } else {
         println!("? get_server_info, addr: {}, not found", addr);
         Ok(None)
@@ -471,7 +514,7 @@ async fn get_profile(
     let addr: String = params.one()?;
     let context = context.lock().await;
     match context.players.get(&addr) {
-        Some(player_info) => Ok(Some(player_info.profile.clone().try_to_vec().unwrap())),
+        Some(player_info) => Ok(Some(borsh::to_vec(&player_info.profile).unwrap())),
         None => Ok(None),
     }
 }
@@ -596,6 +639,8 @@ async fn serve(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<()
         .get_mut(&game_addr)
         .ok_or(custom_error(Error::GameAccountNotFound))?;
 
+    let new_access_version = account.access_version + 1;
+
     if account.transactor_addr.is_none() {
         is_transactor = true;
         account.transactor_addr = Some(server_addr.clone());
@@ -621,11 +666,11 @@ async fn serve(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<()
                 DEFAULT_MAX_SERVERS as _,
             )));
         } else {
-            account.access_version += 1;
+            account.access_version = new_access_version;
             account.servers.push(ServerJoin::new(
                 server_addr.clone(),
                 server_account.endpoint.clone(),
-                account.access_version,
+                new_access_version,
                 verify_key,
             ));
         }
@@ -653,7 +698,7 @@ async fn get_balance(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcRes
     } else {
         println!("? get_balance, player_addr: {}, not found", player_addr);
     }
-    Ok(amount.try_to_vec().unwrap())
+    Ok(borsh::to_vec(&amount).unwrap())
 }
 
 async fn get_account_info(
@@ -663,7 +708,7 @@ async fn get_account_info(
     let addr: String = params.one()?;
     let context = context.lock().await;
     if let Some(account) = context.games.get(&addr) {
-        Ok(Some(account.to_owned().try_to_vec().unwrap()))
+        Ok(Some(borsh::to_vec(&account).unwrap()))
     } else {
         println!("? get_account_info, addr: {}, not found", addr);
         Ok(None)
@@ -673,7 +718,7 @@ async fn get_account_info(
 async fn list_tokens(_params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<Vec<u8>> {
     let context = context.lock().await;
     let tokens: Vec<&TokenAccount> = context.tokens.values().collect();
-    let bytes = tokens.try_to_vec()?;
+    let bytes = borsh::to_vec(&tokens)?;
     Ok(bytes)
 }
 
@@ -686,10 +731,22 @@ async fn get_player_info(
     let Some(player) = context.players.get(&addr) else {
         return Ok(None);
     };
-    Ok(Some(player.try_to_vec().unwrap()))
+    Ok(Some(borsh::to_vec(player).unwrap()))
+}
+
+async fn get_recipient(
+    params: Params<'_>,
+    context: Arc<Mutex<Context>>,
+) -> RpcResult<Option<Vec<u8>>> {
+    let addr: String = params.one()?;
+    let context = context.lock().await;
+    let Some(recipient) = context.recipients.get(&addr) else {
+        return Ok(None);
+    };
+    Ok(Some(borsh::to_vec(recipient).unwrap()))
 }
 
-async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<()> {
+async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<String> {
     let SettleParams {
         addr,
         settles,
@@ -704,7 +761,7 @@ async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<(
     );
 
     // Simulate the finality time
-    tokio::time::sleep(Duration::from_secs(1)).await;
+    // tokio::time::sleep(Duration::from_secs(10)).await;
     // ---
 
     let mut context = context.lock().await;
@@ -727,6 +784,7 @@ async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<(
         .retain(|d| d.settle_version < game.settle_version);
 
     if game.settle_version != settle_version {
+        println!("E The settle_versions mismach");
         return Err(custom_error(Error::InvalidSettle(format!(
             "Invalid settle version, current: {}, transaction: {}",
             game.settle_version, settle_version,
@@ -736,8 +794,7 @@ async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<(
     // Increase the `settle_version`
     game.settle_version = next_settle_version;
     println!("! Bump settle version to {}", game.settle_version);
-    game.checkpoint = checkpoint;
-    game.checkpoint_access_version = game.access_version;
+    game.checkpoint_on_chain = Some(checkpoint);
 
     // Handle settles
     for s in settles.into_iter() {
@@ -793,7 +850,7 @@ async fn settle(params: Params<'_>, context: Arc<Mutex<Context>>) -> RpcResult<(
 
     context.players = players;
     context.games = games;
-    Ok(())
+    Ok(format!("facade_settle_{}", settle_version))
 }
 
 async fn run_server(context: Context) -> anyhow::Result<ServerHandle> {
@@ -816,6 +873,8 @@ async fn run_server(context: Context) -> anyhow::Result<ServerHandle> {
     module.register_async_method("get_game_bundle", get_game_bundle)?;
     module.register_async_method("get_registration_info", get_registration_info)?;
     module.register_async_method("get_balance", get_balance)?;
+    module.register_async_method("get_player_info", get_player_info)?;
+    module.register_async_method("get_recipient", get_recipient)?;
     module.register_async_method("register_server", register_server)?;
     module.register_async_method("create_profile", create_profile)?;
     module.register_async_method("get_profile", get_profile)?;
@@ -826,26 +885,30 @@ async fn run_server(context: Context) -> anyhow::Result<ServerHandle> {
     module.register_async_method("settle", settle)?;
     module.register_async_method("vote", vote)?;
     module.register_async_method("list_tokens", list_tokens)?;
-    module.register_async_method("get_player_info", get_player_info)?;
 
     let handle = http_server.start(module)?;
     Ok(handle)
 }
 
-/// Command-line interface
-#[derive(Parser, Debug)]
-#[command(author, version, about, long_about = None)]
-struct Args {
-    // Game specs to load
-    specs: Vec<String>,
+fn cli() -> Command {
+    Command::new("facade")
+        .about("A mock server for local development with Race")
+        .arg(arg!(-g <game> ... "The path to a game spec json file"))
+        .arg(arg!(-b <bundle> ... "The path to a wasm bundle"))
 }
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    let args = Args::parse();
+    println!("Start at {}", HTTP_HOST);
+    let matches = cli().get_matches();
     let mut context = Context::default();
-    context.load_games(args.specs);
     context.load_default_tokens();
+    if let Some(game_spec_paths) = matches.get_many::<String>("game") {
+        context.load_games(&game_spec_paths.map(String::as_str).collect::<Vec<&str>>());
+    }
+    if let Some(bundle_paths) = matches.get_many::<String>("bundle") {
+        context.load_bundles(&bundle_paths.map(String::as_str).collect::<Vec<&str>>());
+    }
     let server_handle = run_server(context).await?;
     server_handle.stopped().await;
     Ok(())
diff --git a/flake.lock b/flake.lock
index ef35d92b..ce966b91 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,29 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1687709756,
-        "narHash": "sha256-Y5wKlQSkgEK2weWdOu4J3riRd+kV/VCgHsqLNTTWQ/0=",
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "dbabf0ca0c0c4bce6ea5eaf65af5cb694d2082c7",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_2": {
-      "inputs": {
-        "systems": "systems_2"
-      },
-      "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
         "type": "github"
       },
       "original": {
@@ -38,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1688585123,
-        "narHash": "sha256-+xFOB4WaRUHuZI7H1tWHTrwY4BnbPmh8M1n/XhPRH0w=",
+        "lastModified": 1725194671,
+        "narHash": "sha256-tLGCFEFTB5TaOKkpfw3iYT9dnk4awTP/q4w+ROpMfuw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "23de9f3b56e72632c628d92b71c47032e14a3d4d",
+        "rev": "b833ff01a0d694b910daca6e2ff4a3f26dee478c",
         "type": "github"
       },
       "original": {
@@ -54,11 +36,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1681358109,
-        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
+        "lastModified": 1718428119,
+        "narHash": "sha256-WdWDpNaq6u1IPtxtYHHWpl5BmabtpmLnMAx0RdJ/vo8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
+        "rev": "e6cea36f83499eb4e9cd184c8a8e823296b50ad5",
         "type": "github"
       },
       "original": {
@@ -77,15 +59,14 @@
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": "flake-utils_2",
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1688610886,
-        "narHash": "sha256-Ir5FaBvhBtZ5OGZ3g9rgy4twUcEnyuGEz4QLmxAn9FE=",
+        "lastModified": 1725243956,
+        "narHash": "sha256-0A5ZP8uDCyBdYUzayZfy6JFdTefP79oZVAjyqA/yuSI=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "358d7155300cd64357f9afd14aa3383c2323e5fc",
+        "rev": "a10c8092d5f82622be79ed4dd12289f72011f850",
         "type": "github"
       },
       "original": {
@@ -108,21 +89,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index ec6d8ce9..acfe5ce8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,42 +14,28 @@
         pkgs = import nixpkgs {
           inherit system overlays;
         };
-        code = pkgs.callPackage ./. { inherit nixpkgs system rust-overlay; };
-      in rec {
-        packages = {
-          race-transactor = code.race-transactor;
-          race-cli = code.race-cli;
-          all = pkgs.symlinkJoin {
-            name = "all";
-            paths = with code; [ race-transactor race-cli ];
-          };
-        };
-
-        default = packages.all;
-
+      in {
         devShell = pkgs.mkShell {
           nativeBuildInputs = with pkgs; [
-            (rust-bin.stable.latest.default.override {
+            (rust-bin.stable."1.77.0".default.override {
               extensions = [ "rust-src" ];
-             targets = [ "wasm32-unknown-unknown" ];
+              targets = [ "wasm32-unknown-unknown" ];
             })
             cargo
             openssl
             pkg-config
-            rust-analyzer
-            simple-http-server
             nodejs_18
             just
             binaryen
+            # For development
+            rust-analyzer
+            nodePackages.typescript
             nodePackages.typescript-language-server
+            zellij
           ];
-          RUST_LOG = "info,wasmer_compiler_cranelift=info,solana_rpc_client=debug,solana_client=debug,jsonrpsee_server=info";
+          RUST_LOG = "info,hyper=error,wasmer_compiler_cranelift=info,solana_rpc_client=debug,solana_client=debug,jsonrpsee_server=info";
           RUST_BACKTRACE = 1;
         };
       }
     );
-
-  nixConfig = {
-    bash-prompt-prefix = "[race]";
-  };
 }
diff --git a/js/borsh/src/errors.ts b/js/borsh/src/errors.ts
index 07a8790e..fb86ca71 100644
--- a/js/borsh/src/errors.ts
+++ b/js/borsh/src/errors.ts
@@ -1,3 +1,7 @@
+export function invalidCtor(path: string[]) {
+  throw new Error(`Borsh: Cannot deserialize, missing type annotation at: ${path.join(',')}`);
+}
+
 export function invalidByteArrayLength(path: string[], expected: number, actual: number) {
   throw new Error(`Borsh: Invalid byte array length at: ${path.join(',')}, expected: ${expected}, actual: ${actual}`);
 }
diff --git a/js/borsh/src/index.ts b/js/borsh/src/index.ts
index 6a14e316..c07058e3 100644
--- a/js/borsh/src/index.ts
+++ b/js/borsh/src/index.ts
@@ -17,7 +17,37 @@ import {
 } from './types';
 import { BinaryWriter } from './writer';
 import { BinaryReader } from './reader';
-import { invalidByteArrayLength, extendedWriterNotFound, extendedReaderNotFound, invalidEnumField } from './errors';
+import { invalidByteArrayLength, extendedWriterNotFound, extendedReaderNotFound, invalidEnumField, invalidCtor } from './errors';
+
+class DeserializeError extends Error {
+  cause: Error;
+  path: string[];
+  obj: any | undefined;
+
+  constructor(path: string[], cause: Error, obj: any) {
+    super('Deserialize failed')
+    this.cause = cause;
+    this.path = path;
+    this.obj = obj;
+    Object.setPrototypeOf(this, DeserializeError.prototype)
+  }
+}
+
+class SerializeError extends Error {
+  cause: Error;
+  path: string[];
+  fieldType: FieldType;
+  value: any;
+
+  constructor(path: string[], cause: Error, fieldType: FieldType, value: any) {
+    super('Serialize failed')
+    this.cause = cause;
+    this.path = path;
+    this.fieldType = fieldType;
+    this.value = value;
+    Object.setPrototypeOf(this, SerializeError.prototype)
+  }
+}
 
 function addSchemaField(prototype: any, key: FieldKey, fieldType: FieldType) {
   let fields: Field[] = prototype.__schema_fields || [];
@@ -93,7 +123,7 @@ function serializeValue(path: string[], value: any, fieldType: FieldType, writer
       } else if (kind === 'array') {
         writer.writeU32(value.length);
         for (let i = 0; i < value.length; i++) {
-          serializeValue([...path, `<Array[${i}]>`], value[i], v, writer);
+          serializeValue([...path, `<Array[${i}/${value.length}]>`], value[i], v, writer);
         }
       } else if (kind === 'struct') {
         serializeStruct(path, value, writer);
@@ -115,8 +145,11 @@ function serializeValue(path: string[], value: any, fieldType: FieldType, writer
       }
     }
   } catch (err: any) {
-    console.error('Borsh serialize failed, path:', path, 'error:', err);
-    throw err;
+    if (err instanceof SerializeError) {
+      throw err;
+    } else {
+      throw new SerializeError(path, err, fieldType, value)
+    }
   }
 }
 
@@ -154,7 +187,7 @@ function deserializeValue(path: string[], fieldType: FieldType, reader: BinaryRe
         let arr = [];
         const length = reader.readU32();
         for (let i = 0; i < length; i++) {
-          let v = deserializeValue([...path, `<Array[${i}]>`], value, reader);
+          let v = deserializeValue([...path, `<Array[${i}/${length}]>`], value, reader);
           arr.push(v);
         }
         return arr;
@@ -189,8 +222,11 @@ function deserializeValue(path: string[], fieldType: FieldType, reader: BinaryRe
       }
     }
   } catch (err: any) {
-    console.error('Borsh deserialize failed, path:', path, 'error:', err);
-    throw err;
+    if (err instanceof DeserializeError) {
+      throw err
+    } else {
+      throw new DeserializeError(path, err, undefined)
+    }
   }
 }
 
@@ -234,24 +270,37 @@ function deserializeEnum(path: string[], enumClass: Function, reader: BinaryRead
   if (enumVariants instanceof Array) {
     const i = reader.readU8();
     const variant = enumVariants[i];
-    return deserializeStruct([...path, `<Variant[${i}]>`], variant, reader);
+    let obj = deserializeStruct([...path, `<Variant[${i}]>`], variant, reader);
+    Object.setPrototypeOf(obj, variant.prototype);
+    return obj;
   } else {
     invalidEnumField(path);
   }
 }
 
 function deserializeStruct<T>(path: string[], ctor: Ctor<T>, reader: BinaryReader): T {
+  if (ctor === undefined) invalidCtor(path);
   const prototype = ctor.prototype;
   const fields = getSchemaFields(prototype);
   let obj = {};
-  for (const field of fields) {
-    obj = deserializeField(path, obj, field, reader);
+  try {
+    for (const field of fields) {
+      obj = deserializeField(path, obj, field, reader);
+    }
+  } catch (e) {
+    if (e instanceof DeserializeError) {
+      if (e.obj === undefined) {
+        e.obj = obj;
+      }
+    }
+    throw e;
   }
   return new ctor(obj);
 }
 
 export function field(fieldType: FieldType) {
   return function (target: any, key: PropertyKey) {
+    if (target?.constructor?.prototype === undefined) throw new Error(`Invalid field argument for key: ${key.toString()}`)
     addSchemaField(target.constructor.prototype, key, fieldType);
   };
 }
@@ -288,10 +337,17 @@ export function enums(enumClass: Function): EnumFieldType {
 
 export function serialize(obj: any): Uint8Array {
   const writer = new BinaryWriter();
-  if (isVariantObject(obj)) {
-    serializeEnum([], obj, writer);
-  } else {
-    serializeStruct([], obj, writer);
+  try {
+    if (isVariantObject(obj)) {
+      serializeEnum([], obj, writer);
+    } else {
+      serializeStruct([], obj, writer);
+    }
+  } catch (e) {
+    if (e instanceof SerializeError) {
+      console.error('Serialize failed, path:', e.path, ', fieldType:', e.fieldType, ', value:', e.value, ', cause:', e.cause);
+    }
+    throw e;
   }
   return writer.toArray();
 }
@@ -300,10 +356,17 @@ export function deserialize<T>(enumClass: EnumClass<T>, data: Uint8Array): T;
 export function deserialize<T>(ctor: Ctor<T>, data: Uint8Array): T;
 export function deserialize<T>(classType: Ctor<T> | EnumClass<T>, data: Uint8Array): T {
   const reader = new BinaryReader(data);
-  if (isEnumClass(classType)) {
-    return deserializeEnum([], classType, reader);
-  } else {
-    return deserializeStruct([], classType, reader);
+  try {
+    if (isEnumClass(classType)) {
+      return deserializeEnum([], classType, reader);
+    } else {
+      return deserializeStruct([], classType, reader);
+    }
+  } catch (e) {
+    if (e instanceof DeserializeError) {
+      console.error('Deserialize failed, path:', e.path, ', current object:', e.obj, ', cause:', e.cause, ', data:', data);
+    }
+    throw e;
   }
 }
 
diff --git a/js/borsh/tsfmt.json b/js/borsh/tsfmt.json
index ac46672c..5823aaa0 120000
--- a/js/borsh/tsfmt.json
+++ b/js/borsh/tsfmt.json
@@ -1 +1 @@
-/home/tianshu/workspace/race/js/config/tsfmt.json
\ No newline at end of file
+../config/tsfmt.json
\ No newline at end of file
diff --git a/js/package-lock.json b/js/package-lock.json
index 39bc1606..81d01035 100644
--- a/js/package-lock.json
+++ b/js/package-lock.json
@@ -44,6 +44,15 @@
         "undici-types": "~5.26.4"
       }
     },
+    "node_modules/@aashutoshrathi/word-wrap": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/@aashutoshrathi/word-wrap/-/word-wrap-1.2.6.tgz",
+      "integrity": "sha512-1Yjs2SvM8TflER/OD3cOjhWWOZb58A2t7wpE2S9XfBYTiIl+XFhQG2bjy4Pu1I+EAlCNUzRDYDdFwFYUKvXcIA==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/@ampproject/remapping": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.2.1.tgz",
@@ -58,17 +67,89 @@
       }
     },
     "node_modules/@babel/code-frame": {
-      "version": "7.21.4",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.21.4.tgz",
-      "integrity": "sha512-LYvhNKfwWSPpocw8GI7gpK2nq3HSDuEPC/uSYaALSJu9xjsalaaYFOq0Pwt5KmVqwEbZlDu81aLXwBOmD/Fv9g==",
+      "version": "7.23.5",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.23.5.tgz",
+      "integrity": "sha512-CgH3s1a96LipHCmSUmYFPwY7MNx8C3avkq7i4Wl3cfa662ldtUe4VM1TPXX70pfmrlWTb6jLqTYrZyT2ZTJBgA==",
       "dev": true,
       "dependencies": {
-        "@babel/highlight": "^7.18.6"
+        "@babel/highlight": "^7.23.4",
+        "chalk": "^2.4.2"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
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+        "bn.js": "^5.2.1",
+        "ethereum-bloom-filters": "^1.0.6",
+        "ethereum-cryptography": "^2.1.2",
+        "ethjs-unit": "0.1.6",
+        "number-to-bn": "1.7.0",
+        "randombytes": "^2.1.0",
+        "utf8": "3.0.0"
+      }
+    },
     "webidl-conversions": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
@@ -11483,12 +12795,6 @@
         "is-typed-array": "^1.1.10"
       }
     },
-    "word-wrap": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
-      "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
-      "dev": true
-    },
     "wrap-ansi": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
diff --git a/js/sdk-core/.eslintrc.cjs b/js/sdk-core/.eslintrc.cjs
new file mode 100644
index 00000000..c8102e3b
--- /dev/null
+++ b/js/sdk-core/.eslintrc.cjs
@@ -0,0 +1,7 @@
+/* eslint-env node */
+module.exports = {
+  extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended'],
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
+  root: true,
+};
diff --git a/js/sdk-core/package.json b/js/sdk-core/package.json
index a0f5068c..00f63a10 100644
--- a/js/sdk-core/package.json
+++ b/js/sdk-core/package.json
@@ -3,6 +3,7 @@
   "version": "0.2.6",
   "description": "The type definitions for Race SDK",
   "scripts": {
+    "check": "tsc -p tsconfig.types.json --skipLibCheck",
     "test": "jest",
     "test:watch": "jest --watch",
     "build": "run-p -l build:*",
@@ -33,18 +34,22 @@
   "devDependencies": {
     "@types/chai": "^4.3.4",
     "@types/jest": "^29.5.1",
+    "@typescript-eslint/eslint-plugin": "^6.15.0",
+    "@typescript-eslint/parser": "^6.15.0",
+    "@types/rfdc": "^1.2.0",
     "chai": "^4.3.7",
-    "eslint": "^8.40.0",
+    "eslint": "^8.56.0",
     "jest": "^29.5.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.8.7",
     "ts-jest": "^29.1.0",
-    "typescript": "^5.0.4"
+    "typescript": "^5.3.3"
   },
   "peerDependencies": {
     "@race-foundation/borsh": "*",
-    "ts-chacha20": "^1.2.0"
+    "merkletreejs": "^0.4.0",
+    "ts-chacha20": "^1.2.0",
+    "rfdc": "^1.4.1"
   },
-  "testDependencies": {
-  }
+  "testDependencies": {}
 }
diff --git a/js/sdk-core/src/accounts.ts b/js/sdk-core/src/accounts.ts
index ce0fb987..c50c081a 100644
--- a/js/sdk-core/src/accounts.ts
+++ b/js/sdk-core/src/accounts.ts
@@ -1,4 +1,5 @@
 import { field, array, struct, option, enums, variant } from '@race-foundation/borsh';
+import { Checkpoint, CheckpointOnChain } from './checkpoint';
 
 export interface IPlayerJoin {
   readonly addr: string;
@@ -58,8 +59,7 @@ export interface IGameAccount {
   readonly data: Uint8Array;
   readonly entryType: EntryType;
   readonly recipientAddr: string;
-  readonly checkpoint: Uint8Array;
-  readonly checkpointAccessVersion: bigint;
+  readonly checkpointOnChain: CheckpointOnChain | undefined;
 }
 
 export interface IServerAccount {
@@ -106,7 +106,17 @@ export class Token implements IToken {
   }
 }
 
-export class TokenWithBalance implements IToken {
+export interface ITokenWithBalance extends IToken {
+  readonly addr: string;
+  readonly icon: string;
+  readonly name: string;
+  readonly symbol: string;
+  readonly decimals: number;
+  readonly amount: bigint;
+  readonly uiAmount: string;
+}
+
+export class TokenWithBalance implements ITokenWithBalance {
   readonly addr!: string;
   readonly icon!: string;
   readonly name!: string;
@@ -148,13 +158,13 @@ export interface IRecipientSlot {
   readonly slotType: RecipientSlotType;
   readonly tokenAddr: string;
   readonly shares: IRecipientSlotShare[];
+  readonly balance: bigint;
 }
 
 export interface IRecipientSlotShare {
   readonly owner: RecipientSlotOwner;
   readonly weights: number;
   readonly claimAmount: bigint;
-  readonly claimAmountCap: bigint;
 }
 
 export abstract class RecipientSlotOwner {}
@@ -183,13 +193,18 @@ export type EntryTypeKind =
   | 'Invalid'
   | 'Cash'
   | 'Ticket'
-  | 'Gating';
+  | 'Gating'
+  | 'Disabled';
 
 export interface IEntryTypeKind {
   kind(): EntryTypeKind;
 }
 
-export abstract class EntryType {}
+export abstract class EntryType implements IEntryTypeKind {
+  kind(): EntryTypeKind {
+    return 'Invalid';
+  }
+}
 
 @variant(0)
 export class EntryTypeCash extends EntryType implements IEntryTypeKind {
@@ -200,6 +215,7 @@ export class EntryTypeCash extends EntryType implements IEntryTypeKind {
   constructor(fields: any) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, EntryTypeCash.prototype);
   }
   kind(): EntryTypeKind {
     return 'Cash';
@@ -207,7 +223,7 @@ export class EntryTypeCash extends EntryType implements IEntryTypeKind {
 }
 
 @variant(1)
-export class EntryTypeTicket extends EntryType implements IEntryTypeKind{
+export class EntryTypeTicket extends EntryType implements IEntryTypeKind {
   @field('u8')
   slotId!: number;
   @field('u64')
@@ -215,6 +231,7 @@ export class EntryTypeTicket extends EntryType implements IEntryTypeKind{
   constructor(fields: any) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, EntryTypeTicket.prototype);
   }
   kind(): EntryTypeKind {
     return 'Ticket';
@@ -222,18 +239,30 @@ export class EntryTypeTicket extends EntryType implements IEntryTypeKind{
 }
 
 @variant(2)
-export class EntryTypeGating extends EntryType implements IEntryTypeKind{
+export class EntryTypeGating extends EntryType implements IEntryTypeKind {
   @field('string')
   collection!: string;
   constructor(fields: any) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, EntryTypeGating.prototype);
   }
   kind(): EntryTypeKind {
     return 'Gating';
   }
 }
 
+@variant(3)
+export class EntryTypeDisabled extends EntryType implements IEntryTypeKind {
+  constructor(_: any) {
+    super();
+    Object.setPrototypeOf(this, EntryTypeDisabled.prototype);
+  }
+  kind(): EntryTypeKind {
+    return 'Disabled';
+  }
+}
+
 export class Nft implements INft {
   @field('string')
   readonly addr!: string;
@@ -352,10 +381,8 @@ export class GameAccount implements IGameAccount {
   readonly entryType!: EntryType;
   @field('string')
   readonly recipientAddr!: string;
-  @field('u8-array')
-  readonly checkpoint!: Uint8Array;
-  @field('u64')
-  readonly checkpointAccessVersion!: bigint;
+  @field(option(struct(CheckpointOnChain)))
+  readonly checkpointOnChain: CheckpointOnChain | undefined;
   constructor(fields: IGameAccount) {
     Object.assign(this, fields);
   }
@@ -437,8 +464,6 @@ export class RecipientSlotShare implements IRecipientSlotShare {
   weights!: number;
   @field('u64')
   claimAmount!: bigint;
-  @field('u64')
-  claimAmountCap!: bigint;
   constructor(fields: IRecipientSlotShare) {
     Object.assign(this, fields);
   }
@@ -453,6 +478,8 @@ export class RecipientSlot implements IRecipientSlot {
   tokenAddr!: string;
   @field(array(struct(RecipientSlotShare)))
   shares!: IRecipientSlotShare[];
+  @field('u64')
+  balance!: bigint;
   constructor(fields: IRecipientSlot) {
     Object.assign(this, fields);
   }
diff --git a/js/sdk-core/src/app-client.ts b/js/sdk-core/src/app-client.ts
index 15567acf..ce0bcf1f 100644
--- a/js/sdk-core/src/app-client.ts
+++ b/js/sdk-core/src/app-client.ts
@@ -1,155 +1,124 @@
 import {
-  BroadcastFrameEvent,
-  BroadcastFrameMessage,
-  BroadcastFrameTxState,
   Connection,
-  ConnectionState,
+  GetCheckpointParams,
   IConnection,
-  Message,
-  SubmitEventParams,
-  SubmitMessageParams,
-  SubscribeEventParams,
 } from './connection';
 import { GameContext } from './game-context';
-import { GameContextSnapshot } from './game-context-snapshot';
 import { ITransport, TransactionResult } from './transport';
 import { IWallet } from './wallet';
-import { Handler, InitAccount } from './handler';
+import { Handler } from './handler';
 import { Encryptor, IEncryptor } from './encryptor';
 import { SdkError } from './error';
-import { EntryType, EntryTypeCash, GameAccount, GameBundle, IToken, PlayerProfile } from './accounts';
-import { TxState } from './tx-state';
 import { Client } from './client';
-import { Custom, GameEvent, ICustomEvent } from './events';
-import { ProfileCache } from './profile-cache';
 import { IStorage, getTtlCache, setTtlCache } from './storage';
 import { DecryptionCache } from './decryption-cache';
+import { ProfileLoader } from './profile-loader';
+import { BaseClient } from './base-client';
+import { EntryTypeCash, GameAccount, GameBundle, IToken } from './accounts';
+import {
+  ConnectionStateCallbackFunction,
+  EventCallbackFunction,
+  GameInfo,
+  MessageCallbackFunction,
+  TxStateCallbackFunction,
+  PlayerProfileWithPfp,
+  ProfileCallbackFunction,
+  ErrorCallbackFunction
+} from './types';
+import { SubClient } from './sub-client';
+import { Checkpoint } from './checkpoint';
+import { clone } from './utils';
 
 const BUNDLE_CACHE_TTL = 3600 * 365;
 
-export type EventCallbackFunction = (
-  context: GameContextSnapshot,
-  state: Uint8Array,
-  event: GameEvent | undefined
-) => void;
-export type MessageCallbackFunction = (message: Message) => void;
-export type TxStateCallbackFunction = (txState: TxState) => void;
-export type OnConnectionStateCallbackFunction = (connState: ConnectionState) => void;
-
 export type AppClientInitOpts = {
   transport: ITransport;
   wallet: IWallet;
   gameAddr: string;
+  onProfile: ProfileCallbackFunction;
   onEvent: EventCallbackFunction;
   onMessage?: MessageCallbackFunction;
   onTxState?: TxStateCallbackFunction;
-  onConnectionState?: OnConnectionStateCallbackFunction;
+  onError?: ErrorCallbackFunction;
+  onConnectionState?: ConnectionStateCallbackFunction;
   storage?: IStorage;
 };
 
+export type SubClientInitOpts = {
+  gameId: number;
+  gameAddr: string;
+  onEvent: EventCallbackFunction;
+  onMessage?: MessageCallbackFunction;
+  onTxState?: TxStateCallbackFunction;
+  onError?: ErrorCallbackFunction;
+  onConnectionState?: ConnectionStateCallbackFunction;
+};
+
 export type JoinOpts = {
   amount: bigint;
   position?: number;
   createProfileIfNeeded?: boolean;
 };
 
-export type GameInfo = {
-  title: string;
-  maxPlayers: number;
-  minDeposit?: bigint;
-  maxDeposit?: bigint;
-  entryType: EntryType,
-  token: IToken;
-  tokenAddr: string;
-  bundleAddr: string;
-  data: Uint8Array;
-  dataLen: number;
+export type AppClientCtorOpts = {
+  gameAddr: string;
+  gameAccount: GameAccount;
+  handler: Handler;
+  wallet: IWallet;
+  client: Client;
+  transport: ITransport;
+  connection: IConnection;
+  gameContext: GameContext;
+  onEvent: EventCallbackFunction;
+  onMessage: MessageCallbackFunction | undefined;
+  onTxState: TxStateCallbackFunction | undefined;
+  onConnectionState: ConnectionStateCallbackFunction | undefined;
+  onError: ErrorCallbackFunction | undefined;
+  encryptor: IEncryptor;
+  info: GameInfo;
+  decryptionCache: DecryptionCache;
+  profileLoader: ProfileLoader;
+  storage: IStorage | undefined;
+  endpoint: string;
 };
 
-export class AppClient {
-  #gameAddr: string;
-  #handler: Handler;
-  #wallet: IWallet;
-  #client: Client;
-  #transport: ITransport;
-  #connection: IConnection;
-  #gameContext: GameContext;
-  #onEvent: EventCallbackFunction;
-  #onMessage?: MessageCallbackFunction;
-  #onTxState?: TxStateCallbackFunction;
-  #onConnectionState?: OnConnectionStateCallbackFunction;
-  #encryptor: IEncryptor;
-  #profileCaches: ProfileCache;
-  #info: GameInfo;
-  #decryptionCache: DecryptionCache;
-
-  constructor(
-    gameAddr: string,
-    handler: Handler,
-    wallet: IWallet,
-    client: Client,
-    transport: ITransport,
-    connection: IConnection,
-    gameContext: GameContext,
-    onEvent: EventCallbackFunction,
-    onMessage: MessageCallbackFunction | undefined,
-    onTxState: TxStateCallbackFunction | undefined,
-    onConnectionState: OnConnectionStateCallbackFunction | undefined,
-    encryptor: IEncryptor,
-    info: GameInfo,
-    decryptionCache: DecryptionCache,
-  ) {
-    this.#gameAddr = gameAddr;
-    this.#handler = handler;
-    this.#wallet = wallet;
-    this.#client = client;
-    this.#transport = transport;
-    this.#connection = connection;
-    this.#gameContext = gameContext;
-    this.#onEvent = onEvent;
-    this.#onMessage = onMessage;
-    this.#onTxState = onTxState;
-    this.#onConnectionState = onConnectionState;
-    this.#encryptor = encryptor;
-    this.#profileCaches = new ProfileCache(transport);
-    this.#info = info;
-    this.#decryptionCache = decryptionCache;
+export class AppClient extends BaseClient {
+  __profileLoader: ProfileLoader;
+  __storage?: IStorage;
+  __endpoint: string;
+  __latestGameAccount: GameAccount;
+
+  constructor(opts: AppClientCtorOpts) {
+    super({
+      onLoadProfile: (id, addr) => opts.profileLoader.load(id, addr),
+      logPrefix: 'MainGame|',
+      gameId: 0,
+      latestCheckpointOnChain: opts.gameAccount.checkpointOnChain,
+      ...opts
+    });
+    this.__profileLoader = opts.profileLoader;
+    this.__storage = opts.storage;
+    this.__endpoint = opts.endpoint;
+    this.__latestGameAccount = opts.gameAccount;
   }
 
   static async initialize(opts: AppClientInitOpts): Promise<AppClient> {
-    const { transport, wallet, gameAddr, onEvent, onMessage, onTxState, onConnectionState, storage } = opts;
-    console.group('AppClient initialization');
+    const { transport, wallet, gameAddr, onEvent, onMessage, onTxState, onConnectionState, onError, onProfile, storage } = opts;
+
+    console.group(`Initialize AppClient, gameAddr = ${gameAddr}`);
     try {
       const playerAddr = wallet.walletAddr;
+      console.log(`PlayerAddr = ${playerAddr}`);
       const encryptor = await Encryptor.create(playerAddr, storage);
       const gameAccount = await transport.getGameAccount(gameAddr);
+      console.log('Game Account:', gameAccount);
       if (gameAccount === undefined) {
         throw SdkError.gameAccountNotFound(gameAddr);
       }
-      console.log('Game account:', gameAccount);
 
-      // Fetch game bundle
-      // The bundle can be considered as immutable, so we use cache whenever possible
       const bundleCacheKey = `BUNDLE__${transport.chain}_${gameAccount.bundleAddr}`;
 
-      let gameBundle: GameBundle | undefined;
-      if (storage !== undefined) {
-        gameBundle = getTtlCache(storage, bundleCacheKey);
-        console.log('Use game bundle from cache:', gameBundle);
-        if (gameBundle !== undefined) {
-          Object.assign(gameBundle, { data: Uint8Array.of() })
-        }
-      }
-      if (gameBundle === undefined) {
-        gameBundle = await transport.getGameBundle(gameAccount.bundleAddr);
-        console.log('Game bundle:', gameBundle);
-        if (gameBundle !== undefined && storage !== undefined && gameBundle.data.length === 0) {
-          setTtlCache(storage, bundleCacheKey, gameBundle, BUNDLE_CACHE_TTL);
-        }
-      }
-      if (gameBundle === undefined) {
-        throw SdkError.gameBundleNotFound(gameAccount.bundleAddr);
-      }
+      const gameBundle = await getGameBundle(transport, storage, bundleCacheKey, gameAccount.bundleAddr);
 
       const transactorAddr = gameAccount.transactorAddr;
       if (transactorAddr === undefined) {
@@ -161,34 +130,37 @@ export class AppClient {
         throw SdkError.transactorAccountNotFound(transactorAddr);
       }
       const decryptionCache = new DecryptionCache();
-      console.log('Transactor endpoint:', transactorAccount.endpoint);
-      const connection = Connection.initialize(gameAddr, playerAddr, transactorAccount.endpoint, encryptor);
-      const client = new Client(playerAddr, gameAddr, encryptor, connection);
+      const endpoint = transactorAccount.endpoint;
+      console.log('Transactor endpoint:', endpoint);
+      const connection = Connection.initialize(gameAddr, playerAddr, endpoint, encryptor);
+      const client = new Client(playerAddr, encryptor, connection);
       const handler = await Handler.initialize(gameBundle, encryptor, client, decryptionCache);
-      const gameContext = new GameContext(gameAccount);
-      gameContext.applyCheckpoint(gameContext.checkpointAccessVersion, gameContext.settleVersion);
+
+      const getCheckpointParams = new GetCheckpointParams({ settleVersion: gameAccount.settleVersion });
+      const checkpointOffChain = await connection.getCheckpoint(getCheckpointParams);
+
+      console.log('Get checkpoint onchain from game account:', gameAccount.checkpointOnChain);
+      console.log('Get checkpoint offchain from transactor:', checkpointOffChain);
+      let checkpoint;
+      if (checkpointOffChain !== undefined && gameAccount.checkpointOnChain !== undefined) {
+        checkpoint = Checkpoint.fromParts(checkpointOffChain, gameAccount.checkpointOnChain);
+      } else {
+        checkpoint = Checkpoint.default();
+      }
+
+      const gameContext = new GameContext(gameAccount, checkpoint);
+      console.log('Game Context:', clone(gameContext));
       const token = await transport.getToken(gameAccount.tokenAddr);
       if (token === undefined) {
         throw SdkError.tokenNotFound(gameAccount.tokenAddr);
       }
-      const info: GameInfo = {
-        title: gameAccount.title,
-        entryType: gameAccount.entryType,
-        maxPlayers: gameAccount.maxPlayers,
-        tokenAddr: gameAccount.tokenAddr,
-        bundleAddr: gameAccount.bundleAddr,
-        data: gameAccount.data,
-        dataLen: gameAccount.dataLen,
-        token,
-      };
-
-      if (gameAccount.entryType instanceof EntryTypeCash) {
-        info.minDeposit = gameAccount.entryType.minDeposit;
-        info.maxDeposit = gameAccount.entryType.maxDeposit;
-      }
+      const info = makeGameInfo(gameAccount, token);
+      const profileLoader = new ProfileLoader(transport, storage, onProfile);
+      profileLoader.start();
 
-      return new AppClient(
+      return new AppClient({
         gameAddr,
+        gameAccount,
         handler,
         wallet,
         client,
@@ -199,253 +171,190 @@ export class AppClient {
         onMessage,
         onTxState,
         onConnectionState,
+        onError,
         encryptor,
         info,
         decryptionCache,
-      );
+        profileLoader,
+        storage,
+        endpoint,
+      });
     } finally {
       console.groupEnd();
     }
   }
 
-  get playerAddr() {
-    return this.#wallet.walletAddr;
-  }
+  async subClient(opts: SubClientInitOpts): Promise<SubClient> {
+    try {
+      const { gameId, onEvent, onMessage, onTxState, onConnectionState, onError } = opts;
 
-  get gameAddr() {
-    return this.#gameAddr;
-  }
+      const addr = `${this.__gameAddr}:${gameId.toString()}`;
 
-  get gameContext(): GameContext {
-    return this.#gameContext;
-  }
+      console.group(`SubClient initialization, id: ${gameId}`);
+      console.log('Parent Game Context:', clone(this.__gameContext));
 
-  /**
-   * Get player profile by its wallet address.
-   */
-  async getProfile(addr: string): Promise<PlayerProfile | undefined> {
-    return await this.#profileCaches.getProfile(addr);
-  }
+      // Query the on-chain game account to get the latest checkpoint.
+      const gameAccount = await this.__getGameAccount();
+      const checkpointOnChain = gameAccount.checkpointOnChain;
+      const settleVersion = gameAccount.settleVersion;
 
-  async invokeEventCallback(event: GameEvent | undefined) {
-    const snapshot = new GameContextSnapshot(this.#gameContext);
-    await this.#profileCaches.injectProfiles(snapshot);
-    const state = this.#gameContext.handlerState;
-    this.#onEvent(snapshot, state, event);
-  }
+      const subGame = this.__gameContext.findSubGame(gameId);
 
-  async __initializeState(gameAccount: GameAccount): Promise<void> {
-    const initAccount = InitAccount.createFromGameAccount(gameAccount, this.gameContext.accessVersion, this.gameContext.settleVersion);
-    console.log('Initialize state with', initAccount);
-    await this.#handler.initState(this.#gameContext, initAccount);
-    await this.invokeEventCallback(undefined);
-  }
+      if (subGame === undefined) {
+        console.warn('Game context:', this.__gameContext);
+        throw SdkError.invalidSubId(gameId);
+      } else {
+        console.log('Sub Game:', subGame);
+      }
+
+      const bundleAddr = subGame.bundleAddr;
+
+      const bundleCacheKey = `BUNDLE__${this.__transport.chain}_${bundleAddr}`;
 
-  async __getGameAccount(): Promise<GameAccount> {
-    while (true) {
-      try {
-        const gameAccount = await this.#transport.getGameAccount(this.gameAddr);
-        if (gameAccount === undefined) continue;
-        console.log('Game account', gameAccount);
-        return gameAccount;
-      } catch (e: any) {
-        console.warn(e, 'Failed to fetch game account, will retry in 3s');
-        await new Promise(r => setTimeout(r, 3000));
-        continue;
+      const decryptionCache = new DecryptionCache();
+      const playerAddr = this.__wallet.walletAddr;
+      const connection = Connection.initialize(addr, playerAddr, this.__endpoint, this.__encryptor);
+      const client = new Client(playerAddr, this.__encryptor, connection);
+      const gameBundle = await getGameBundle(this.__transport, this.__storage, bundleCacheKey, bundleAddr);
+      const handler = await Handler.initialize(gameBundle, this.__encryptor, client, decryptionCache);
+
+      // Reload the latest checkpoint.
+      const checkpointOffChain = await this.__connection.getCheckpoint(new GetCheckpointParams({ settleVersion }));
+      if (checkpointOffChain !== undefined && checkpointOnChain !== undefined) {
+        this.__gameContext.checkpoint = Checkpoint.fromParts(checkpointOffChain, checkpointOnChain);
+      } else {
+        this.__gameContext.checkpoint = Checkpoint.default();
       }
-    }
 
+      const gameContext = this.__gameContext.subContext(subGame);
+      console.log("SubGame's GameContext:", clone(gameContext));
+
+      return new SubClient({
+        gameAddr: addr,
+        wallet: this.__wallet,
+        transport: this.__transport,
+        encryptor: this.__encryptor,
+        latestCheckpointOnChain: checkpointOnChain,
+        onEvent,
+        onMessage,
+        onTxState,
+        onConnectionState,
+        onError,
+        handler,
+        connection,
+        client,
+        info: this.__info,
+        decryptionCache,
+        gameContext,
+        gameId,
+      });
+    } finally {
+      console.groupEnd();
+    }
   }
 
   /**
    * Connect to the transactor and retrieve the event stream.
    */
   async attachGame() {
-    await this.#client.attachGame();
-    const sub = this.#connection.subscribeEvents();
-    const gameAccount = await this.__getGameAccount();
-    this.#gameContext = new GameContext(gameAccount);
-    this.#gameContext.applyCheckpoint(gameAccount.checkpointAccessVersion, this.#gameContext.settleVersion);
-    await this.#connection.connect(new SubscribeEventParams({ settleVersion: this.#gameContext.settleVersion }));
-    await this.__initializeState(gameAccount);
-
-    for await (const frame of sub) {
-      if (frame instanceof BroadcastFrameMessage) {
-        console.group('Receive message');
-        try {
-          if (this.#onMessage !== undefined) {
-            const { message } = frame;
-            this.#onMessage(message);
-          }
-        } finally {
-          console.groupEnd();
-        }
-      } else if (frame instanceof BroadcastFrameTxState) {
-        console.group('Receive tx state');
-        try {
-          if (this.#onTxState !== undefined) {
-            const { txState } = frame;
-            this.#onTxState(txState);
-          }
-        } finally {
-          console.groupEnd();
-        }
-      } else if (frame instanceof BroadcastFrameEvent) {
-        const { event, timestamp } = frame;
-        console.group('Handle event: ' + event.kind() + ' at timestamp: ' + new Date(Number(timestamp)).toLocaleString());
-        console.log('Event: ', event);
-        try {
-          this.#gameContext.prepareForNextEvent(timestamp);
-          try {
-            let context = new GameContext(this.#gameContext);
-            await this.#handler.handleEvent(context, event);
-            this.#gameContext = context;
-          } catch (err: any) {
-            console.error(err);
-          }
-          await this.invokeEventCallback(event);
-        } catch (e: any) {
-          console.log("Game context in error:", this.#gameContext);
-          throw e;
-        } finally {
-          console.groupEnd();
-        }
-      } else if (frame === 'disconnected') {
-        if (this.#onConnectionState !== undefined) {
-          this.#onConnectionState('disconnected')
-        }
-        console.group('Disconnected, try reset state and context');
-        try {
-          const gameAccount = await this.__getGameAccount();
-          this.#gameContext = new GameContext(gameAccount);
-          this.#gameContext.applyCheckpoint(gameAccount.checkpointAccessVersion, this.#gameContext.settleVersion);
-          await this.#connection.connect(new SubscribeEventParams({ settleVersion: this.#gameContext.settleVersion }));
-          await this.__initializeState(gameAccount);
-        } finally {
-          console.groupEnd();
-        }
-      } else if (frame === 'connected') {
-        if (this.#onConnectionState !== undefined) {
-          this.#onConnectionState('connected')
-        }
-      } else if (frame === 'closed') {
-        if (this.#onConnectionState !== undefined) {
-          this.#onConnectionState('closed')
-        }
-      } else if (frame === 'reconnected') {
-        if (this.#onConnectionState !== undefined) {
-          this.#onConnectionState('reconnected')
-        }
-      } else {
-        console.log('Subscribe stream ended')
-        break;
+    console.group('Attach to game');
+    let sub;
+    try {
+      await this.__attachGameWithRetry();
+      sub = this.__connection.subscribeEvents();
+      await this.__startSubscribe();
+      for (const p of this.__latestGameAccount.players) {
+        this.__onLoadProfile(p.accessVersion, p.addr);
       }
+    } catch (e) {
+      console.error(this.__logPrefix + 'Attaching game failed', e);
+      this.__invokeErrorCallback('attach-failed')
+      throw e;
+    } finally {
+      console.groupEnd();
     }
+    if (sub !== undefined) await this.__processSubscription(sub);
   }
 
   /**
-   * Join game.
+   * Get player profile by its wallet address.
    */
-  async join(params: JoinOpts): Promise<TransactionResult<void>> {
-    const gameAccount = await this.#transport.getGameAccount(this.gameAddr);
-    if (gameAccount === undefined) {
-      throw new Error('Game account not found');
-    }
-    const playersCount = gameAccount.players.length;
-    if (gameAccount.maxPlayers <= playersCount) {
-      throw new Error('Game is full');
-    }
-    let position: number | undefined = params.position;
-    if (position === undefined) {
-      for (let i = 0; i < gameAccount.maxPlayers; i++) {
-        if (gameAccount.players.find(p => p.position === i) === undefined) {
-          position = i;
-          break;
-        }
-      }
-    }
-    if (position === undefined) {
-      throw new Error('Game is full');
+  getProfile(id: bigint): Promise<PlayerProfileWithPfp | undefined>
+  getProfile(addr: string): Promise<PlayerProfileWithPfp | undefined>
+  async getProfile(idOrAddr: string | bigint): Promise<PlayerProfileWithPfp | undefined> {
+    let addr: string = ''
+    if (typeof idOrAddr === 'bigint') {
+      addr = this.__gameContext.idToAddr(idOrAddr);
+    } else {
+      addr = idOrAddr
     }
+    return this.__profileLoader.getProfile(addr);
+  }
 
-    const publicKey = await this.#encryptor.exportPublicKey();
+  makeSubGameAddr(gameId: number): string {
+    return `${this.__gameAddr}:${gameId}`;
+  }
 
-    let createProfile = false;
-    if (params.createProfileIfNeeded) {
-      const p = await this.getProfile(this.playerAddr);
-      if (p === undefined) {
-        createProfile = true;
-        console.log('No profile account found, will create a new one.')
-      }
-    }
+  /**
+   * Join game.
+   */
+  async join(params: JoinOpts): Promise<TransactionResult<void>> {
+    const publicKey = await this.__encryptor.exportPublicKey();
 
-    return await this.#transport.join(this.#wallet, {
+    return await this.__transport.join(this.__wallet, {
       gameAddr: this.gameAddr,
       amount: params.amount,
-      accessVersion: gameAccount.accessVersion,
-      position,
+      position: params.position || 0,
       verifyKey: publicKey.ec,
-      createProfile,
+      createProfileIfNeeded: params.createProfileIfNeeded,
     });
   }
 
-  /**
-   * Submit an event.
-   */
-  submitEvent(raw: Uint8Array): Promise<void>;
-  submitEvent(customEvent: ICustomEvent): Promise<void>;
-  async submitEvent(arg: ICustomEvent | Uint8Array): Promise<void> {
-    let raw = arg instanceof Uint8Array ? arg : arg.serialize();
-    const event = new Custom({ sender: this.playerAddr, raw });
-    const connState = await this.#connection.submitEvent(
-      new SubmitEventParams({
-        event,
-      })
-    );
-    if (connState !== undefined && this.#onConnectionState !== undefined) {
-      this.#onConnectionState(connState);
+}
+
+
+// Miscellaneous
+
+export async function getGameBundle(transport: ITransport, storage: IStorage | undefined, bundleCacheKey: string, bundleAddr: string): Promise<GameBundle> {
+  let gameBundle: GameBundle | undefined;
+  if (storage !== undefined) {
+    gameBundle = getTtlCache(storage, bundleCacheKey);
+    console.log('Use game bundle from cache:', gameBundle);
+    if (gameBundle !== undefined) {
+      Object.assign(gameBundle, { data: Uint8Array.of() })
     }
   }
-
-  /**
-   * Submit a message, contains arbitrary content.
-   */
-  async submitMessage(message: string) {
-    const connState = await this.#connection.submitMessage(
-      new SubmitMessageParams({
-        content: message,
-      })
-    );
-    if (connState !== undefined && this.#onConnectionState !== undefined) {
-      this.#onConnectionState(connState);
+  if (gameBundle === undefined) {
+    gameBundle = await transport.getGameBundle(bundleAddr);
+    console.log('Game bundle:', gameBundle);
+    if (gameBundle !== undefined && storage !== undefined && gameBundle.data.length === 0) {
+      setTtlCache(storage, bundleCacheKey, gameBundle, BUNDLE_CACHE_TTL);
     }
   }
-
-  /**
-   * Get hidden knowledge by random id. The result contains both
-   * public and private information.  For performance reason, it's
-   * better to cache the result somewhere instead of calling this
-   * function frequently.
-   */
-  async getRevealed(randomId: number): Promise<Map<number, string>> {
-    return this.#decryptionCache.get(randomId) || new Map();
+  if (gameBundle === undefined) {
+    throw SdkError.gameBundleNotFound(bundleAddr);
   }
+  return gameBundle;
+}
 
-  /**
-   * Close current event subscription.
-   */
-  async close() {}
 
-  /**
-   * Exit current game.
-   */
-  async exit(): Promise<void>;
-  async exit(keepConnection: boolean): Promise<void>;
-  async exit(keepConnection: boolean = false) {
-    await this.#connection.exitGame({ keepConnection });
+export function makeGameInfo(gameAccount: GameAccount, token: IToken): GameInfo {
+  const info: GameInfo = {
+    gameAddr: gameAccount.addr,
+    title: gameAccount.title,
+    entryType: gameAccount.entryType,
+    maxPlayers: gameAccount.maxPlayers,
+    tokenAddr: gameAccount.tokenAddr,
+    bundleAddr: gameAccount.bundleAddr,
+    data: gameAccount.data,
+    dataLen: gameAccount.dataLen,
+    token,
+  };
+
+  if (gameAccount.entryType instanceof EntryTypeCash) {
+    info.minDeposit = gameAccount.entryType.minDeposit;
+    info.maxDeposit = gameAccount.entryType.maxDeposit;
   }
 
-  get info(): GameInfo {
-    return this.#info;
-  }
+  return info;
 }
diff --git a/js/sdk-core/src/app-helper.ts b/js/sdk-core/src/app-helper.ts
index 518b3715..c445b344 100644
--- a/js/sdk-core/src/app-helper.ts
+++ b/js/sdk-core/src/app-helper.ts
@@ -1,6 +1,7 @@
-import { EntryTypeCash, GameAccount, INft, IToken, PlayerProfile, TokenWithBalance } from './accounts';
+import { EntryTypeCash, GameAccount, INft, IToken, ITokenWithBalance, PlayerProfile, RecipientAccount, TokenWithBalance } from './accounts';
 import { IStorage } from './storage';
 import { CreateGameAccountParams, ITransport, TransactionResult } from './transport';
+import { PlayerProfileWithPfp } from './types';
 import { IWallet } from './wallet';
 
 
@@ -9,6 +10,11 @@ export type AppHelperInitOpts = {
   storage?: IStorage,
 };
 
+export type ClaimPreview = {
+  tokenAddr: string,
+  amount: bigint,
+};
+
 /**
  * The helper for common interaction.
  *
@@ -118,8 +124,15 @@ export class AppHelper {
    * @param addr - The address of player profile account
    * @returns The player profile account or undefined when not found
    */
-  async getProfile(addr: string): Promise<PlayerProfile | undefined> {
-    return await this.#transport.getPlayerProfile(addr);
+  async getProfile(addr: string): Promise<PlayerProfileWithPfp | undefined> {
+    const profile = await this.#transport.getPlayerProfile(addr);
+    if (profile === undefined) return undefined;
+    if (profile.pfp !== undefined) {
+      const pfp = await this.#transport.getNft(profile.pfp, this.#storage);
+      return { nick: profile.nick, addr: profile.addr, pfp };
+    } else {
+      return { nick: profile.nick, addr: profile.addr, pfp: undefined };
+    }
   }
 
   /**
@@ -142,12 +155,21 @@ export class AppHelper {
   }
 
   /**
-   * List available tokens.
+   * List tokens.
    *
    * @return A list of token info.
    */
-  async listTokens(): Promise<IToken[]> {
-    return await this.#transport.listTokens(this.#storage);
+  async listTokens(tokenAddrs: string[]): Promise<IToken[]> {
+    return await this.#transport.listTokens(tokenAddrs, this.#storage);
+  }
+
+  /**
+   * List tokens with their balance.
+   *
+   * @return A list of token info.
+   */
+  async listTokensWithBalance(walletAddr: string, tokenAddrs: string[]): Promise<ITokenWithBalance[]> {
+    return await this.#transport.listTokensWithBalance(walletAddr, tokenAddrs, this.#storage);
   }
 
   /**
@@ -177,22 +199,61 @@ export class AppHelper {
   }
 
   /**
-   * Fetch tokens and balances
+   * Claim the fees collected by game.
    *
-   * @param walletAddr - The player's wallet address
+   * @param wallet - The wallet adapter to sign the transaction
+   * @param gameAddr - The address of game account.
+   */
+  async claim(wallet: IWallet, gameAddr: string): Promise<TransactionResult<void>> {
+    const gameAccount = await this.#transport.getGameAccount(gameAddr);
+    if (gameAccount === undefined) throw new Error('Game account not found');
+    return await this.#transport.recipientClaim(wallet, { recipientAddr: gameAccount?.recipientAddr });
+  }
+
+  async getRecipient(recipientAddr: string): Promise<RecipientAccount | undefined> {
+    return await this.#transport.getRecipient(recipientAddr);
+  }
+
+  /**
+   * Preview the claim information.
    *
-   * @return The list of tokens with `amount` and `uiAmount` added.
+   * @param wallet - The wallet adapter to sign the transaction
+   * @param recipientAddr | recipientAccount - The address of a recipient account.
    */
-  async listTokensWithBalance(walletAddr: string): Promise<TokenWithBalance[]> {
-    const tokens = await this.listTokens();
-    const tokenAddrs = tokens.map(t => t.addr);
-    const balanceMap = await this.#transport.fetchBalances(walletAddr, tokenAddrs);
-    return tokens.map(t => {
-      let balance = balanceMap.get(t.addr);
-      if (balance === undefined) {
-        balance = 0n;
+  previewClaim(wallet: IWallet, recipientAddr: string): Promise<ClaimPreview[]>
+  previewClaim(wallet: IWallet, recipientAccount: RecipientAccount): Promise<ClaimPreview[]>
+  async previewClaim(wallet: IWallet, recipient: RecipientAccount | string): Promise<ClaimPreview[]> {
+    if (typeof recipient === 'string') {
+      const r = await this.#transport.getRecipient(recipient);
+      if (r === undefined) {
+        throw new Error('Recipient account not found');
       }
-      return new TokenWithBalance(t, balance);
-    });
+      recipient = r;
+    }
+
+    let ret: ClaimPreview[] = [];
+    for (const slot of recipient.slots) {
+      let weights = 0;
+      let totalWeights = 0;
+      let totalClaimed = 0n;
+      let claimed = 0n;
+      for (const share of slot.shares) {
+        totalClaimed += share.claimAmount;
+        totalWeights += share.weights;
+        if (share.owner === wallet.walletAddr) {
+          weights += share.weights;
+          claimed += share.claimAmount;
+        }
+      }
+      const totalAmount = totalClaimed + slot.balance;
+      const amountToClaim = BigInt(Number(totalAmount) * weights / totalWeights) - claimed;
+      if (amountToClaim > 0n) {
+        ret.push({
+          amount: amountToClaim,
+          tokenAddr: slot.tokenAddr
+        });
+      }
+    }
+    return ret;
   }
 }
diff --git a/js/sdk-core/src/base-client.ts b/js/sdk-core/src/base-client.ts
new file mode 100644
index 00000000..d8ada0f3
--- /dev/null
+++ b/js/sdk-core/src/base-client.ts
@@ -0,0 +1,405 @@
+import {
+  ConnectionState,
+  IConnection,
+  SubmitEventParams,
+  SubscribeEventParams,
+  ConnectionSubscription,
+  SubmitMessageParams,
+} from './connection';
+import { EventEffects, GameContext } from './game-context';
+import { GameContextSnapshot } from './game-context-snapshot';
+import { ITransport } from './transport';
+import { IWallet } from './wallet';
+import { Handler } from './handler';
+import { IEncryptor, sha256, sha256String } from './encryptor';
+import { GameAccount } from './accounts';
+import { PlayerConfirming } from './tx-state';
+import { Client } from './client';
+import { CheckpointReady, Custom, EndOfHistory, GameEvent, ICustomEvent, Init } from './events';
+import { DecryptionCache } from './decryption-cache';
+import { ConnectionStateCallbackFunction, ErrorCallbackFunction, ErrorKind, EventCallbackFunction, GameInfo, LoadProfileCallbackFunction, MessageCallbackFunction, TxStateCallbackFunction } from './types';
+import { BroadcastFrame, BroadcastFrameEventHistories, BroadcastFrameMessage, BroadcastFrameSync, BroadcastFrameEvent, BroadcastFrameTxState } from './broadcast-frames';
+import { IInitAccount, InitAccount } from './init-account';
+import { Checkpoint, CheckpointOnChain } from './checkpoint';
+import { clone } from './utils';
+
+const MAX_RETRIES = 3;
+
+export type InitState = {
+  initAccount: InitAccount,
+  checkpointOnChain: CheckpointOnChain | undefined,
+};
+
+export type BaseClientCtorOpts = {
+  gameAddr: string;
+  gameId: number;
+  handler: Handler;
+  wallet: IWallet;
+  client: Client;
+  transport: ITransport;
+  connection: IConnection;
+  gameContext: GameContext;
+  latestCheckpointOnChain: CheckpointOnChain | undefined;
+  onEvent: EventCallbackFunction;
+  onMessage: MessageCallbackFunction | undefined;
+  onTxState: TxStateCallbackFunction | undefined;
+  onConnectionState: ConnectionStateCallbackFunction | undefined;
+  onError: ErrorCallbackFunction | undefined;
+  onLoadProfile: LoadProfileCallbackFunction;
+  encryptor: IEncryptor;
+  info: GameInfo;
+  decryptionCache: DecryptionCache;
+  logPrefix: string;
+};
+
+export class BaseClient {
+  __gameAddr: string;
+  __gameId: number;
+  __handler: Handler;
+  __wallet: IWallet;
+  __client: Client;
+  __transport: ITransport;
+  __connection: IConnection;
+  __gameContext: GameContext;
+  __onEvent: EventCallbackFunction;
+  __onMessage?: MessageCallbackFunction;
+  __onTxState?: TxStateCallbackFunction;
+  __onError?: ErrorCallbackFunction;
+  __onConnectionState?: ConnectionStateCallbackFunction;
+  __onLoadProfile: LoadProfileCallbackFunction;
+  __encryptor: IEncryptor;
+  __info: GameInfo;
+  __decryptionCache: DecryptionCache;
+  __logPrefix: string;
+  __latestCheckpointOnChain: CheckpointOnChain | undefined;
+
+  constructor(opts: BaseClientCtorOpts) {
+    this.__gameAddr = opts.gameAddr;
+    this.__gameId = opts.gameId;
+    this.__latestCheckpointOnChain = opts.latestCheckpointOnChain;
+    this.__handler = opts.handler;
+    this.__wallet = opts.wallet;
+    this.__client = opts.client;
+    this.__transport = opts.transport;
+    this.__connection = opts.connection;
+    this.__gameContext = opts.gameContext;
+    this.__onEvent = opts.onEvent;
+    this.__onMessage = opts.onMessage;
+    this.__onTxState = opts.onTxState;
+    this.__onError = opts.onError;
+    this.__onConnectionState = opts.onConnectionState;
+    this.__encryptor = opts.encryptor;
+    this.__info = opts.info;
+    this.__decryptionCache = opts.decryptionCache;
+    this.__onLoadProfile = opts.onLoadProfile;
+    this.__logPrefix = opts.logPrefix;
+  }
+
+  get playerAddr(): string {
+    return this.__wallet.walletAddr;
+  }
+
+  get playerId(): bigint | undefined {
+    return this.__gameContext.addrToId(this.__wallet.walletAddr);
+  }
+
+  get gameAddr(): string {
+    return this.__gameAddr;
+  }
+
+  get gameContext(): GameContext {
+    return this.__gameContext;
+  }
+
+  get info(): GameInfo {
+    return this.__info;
+  }
+
+  /**
+   * Get hidden knowledge by random id. The result contains both
+   * public and private information.  For performance reason, it's
+   * better to cache the result somewhere instead of calling this
+   * function frequently.
+   */
+  async getRevealed(randomId: number): Promise<Map<number, string>> {
+    return this.__decryptionCache.get(randomId) || new Map();
+  }
+
+  /**
+   * Exit current game.
+   */
+  async exit(): Promise<void>;
+  async exit(keepConnection: boolean): Promise<void>;
+  async exit(keepConnection: boolean = false) {
+    await this.__connection.exitGame({ keepConnection });
+  }
+
+  /**
+   * Detach the game connection.
+   */
+  detach() {
+    this.__connection.disconnect();
+  }
+
+  /**
+   * Parse the id to player's address.
+   *
+   * Throw an error when it fails.
+   */
+  idToAddr(id: bigint): string {
+    return this.__gameContext.idToAddr(id);
+  }
+
+  /**
+   * Parse the player's address to its id.
+   *
+   * Throw an error when it fails.
+   */
+  addrToId(addr: string): bigint {
+    return this.__gameContext.addrToId(addr);
+  }
+
+  /**
+   * Submit an event.
+   */
+  submitEvent(raw: Uint8Array): Promise<void>;
+  submitEvent(customEvent: ICustomEvent): Promise<void>;
+  async submitEvent(arg: ICustomEvent | Uint8Array): Promise<void> {
+    let raw = arg instanceof Uint8Array ? arg : arg.serialize();
+    const id = this.__gameContext.addrToId(this.playerAddr);
+    const event = new Custom({ sender: id, raw });
+    const connState = await this.__connection.submitEvent(
+      new SubmitEventParams({
+        event,
+      })
+    );
+    if (connState !== undefined && this.__onConnectionState !== undefined) {
+      this.__onConnectionState(connState);
+    }
+  }
+
+  /**
+   * Submit a message.
+   */
+  async submitMessage(content: string): Promise<void> {
+    const connState = await this.__connection.submitMessage(new SubmitMessageParams({
+      content
+    }));
+    if (connState !== undefined && this.__onConnectionState !== undefined) {
+      this.__onConnectionState(connState);
+    }
+  }
+
+  async __attachGameWithRetry() {
+    for (let i = 0; i < 10; i++) {
+      const resp = await this.__client.attachGame();
+      console.log('Attach response:', resp);
+      if (resp === 'success') {
+        break;
+      } else {
+        console.log(this.__logPrefix + 'Game is not ready, try again after 2 second.');
+        await new Promise(r => setTimeout(r, 2000));
+      }
+    }
+
+  }
+
+  __invokeErrorCallback(err: ErrorKind, arg?: any) {
+    if (this.__onError) {
+      this.__onError(err, arg)
+    } else {
+      console.error(`${this.__logPrefix}An error occured: ${err}, to handle it, use \`onError\`.`)
+    }
+  }
+
+  async __invokeEventCallback(event: GameEvent | undefined) {
+    const snapshot = new GameContextSnapshot(this.__gameContext);
+    const state = this.__gameContext.handlerState;
+    console.log('Dispatch event callback for ', event?.kind());
+    this.__onEvent(snapshot, state, event);
+  }
+
+  async __getGameAccount(): Promise<GameAccount> {
+    let retries = 0;
+    while (true) {
+      if (retries === MAX_RETRIES) {
+        this.__invokeErrorCallback('onchain-data-not-found')
+        throw new Error(`Game account not found, after ${retries} retries`);
+      }
+      try {
+        const gameAccount = await this.__transport.getGameAccount(this.gameAddr);
+        if (gameAccount === undefined) {
+          retries += 1;
+          continue;
+        }
+        return gameAccount;
+      } catch (e: any) {
+        console.warn(e, 'Failed to fetch game account, will retry in 3s');
+        await new Promise(r => setTimeout(r, 3000));
+        retries += 1;
+        continue;
+      }
+    }
+  }
+
+  async __processSubscription(sub: ConnectionSubscription) {
+    for await (const item of sub) {
+      if (item === undefined) {
+        break;
+      } else if (item instanceof BroadcastFrame) {
+        await this.__handleBroadcastFrame(item);
+      } else {
+        await this.__handleConnectionState(item);
+      }
+    }
+  }
+
+
+
+  async __checkStateSha(stateSha: string, err: ErrorKind) {
+    const sha = await sha256String(this.__gameContext.handlerState)
+    if (sha !== stateSha && stateSha !== '') {
+      console.warn(`An error occurred in event loop: ${err}, game: ${this.__gameAddr}, local: ${sha}, remote: ${stateSha}`);
+    } else {
+      console.log('State SHA validation passed:', stateSha);
+    }
+  }
+
+  async __handleEvent(event: GameEvent, timestamp: bigint, stateSha: string) {
+    console.group(this.__logPrefix + 'Handle event: ' + event.kind() + ' at timestamp: ' + timestamp);
+    console.log('Event: ', event);
+    console.log('Game Context before:', clone(this.__gameContext));
+    let state: Uint8Array | undefined;
+    let err: ErrorKind | undefined;
+    let effects: EventEffects | undefined;
+
+    try {                     // For log group
+      try {
+        this.__gameContext.setTimestamp(timestamp);
+        effects = await this.__handler.handleEvent(this.__gameContext, event);
+        state = this.__gameContext.handlerState;
+
+        await this.__checkStateSha(stateSha, 'event-state-sha-mismatch');
+      } catch (e: any) {
+        console.error(this.__logPrefix, e);
+        err = 'handle-event-error';
+      }
+
+      if (!err) {
+        await this.__invokeEventCallback(event);
+      }
+
+      // When there's a checkpoint, emit an event to indicate that.
+      if ((!err) && effects?.checkpoint) {
+        this.__invokeEventCallback(new CheckpointReady());
+      }
+
+      if (err) {
+        this.__invokeErrorCallback(err, state);
+        throw new Error(`An error occurred in event loop: ${err}`);
+      }
+
+    } finally {
+      console.log('Game Context after:', clone(this.__gameContext));
+      console.groupEnd()
+    }
+  }
+
+  async __handleBroadcastFrame(frame: BroadcastFrame) {
+    if (frame instanceof BroadcastFrameMessage) {
+      console.group(`${this.__logPrefix}Receive message broadcast`);
+      try {
+        if (this.__onMessage !== undefined) {
+          const { message } = frame;
+          console.log('Message:', message);
+          this.__onMessage(message);
+        }
+      } finally {
+        console.groupEnd();
+      }
+    } else if (frame instanceof BroadcastFrameTxState) {
+      console.group(`${this.__logPrefix}Receive transaction state broadcast`);
+      try {
+        if (this.__onTxState !== undefined) {
+          const { txState } = frame;
+          console.log('TxState:', txState);
+          if (txState instanceof PlayerConfirming) {
+            txState.confirmPlayers.forEach(p => {
+              this.__onLoadProfile(p.id, p.addr);
+            });
+          }
+          this.__onTxState(txState);
+        }
+      } finally {
+        console.groupEnd();
+      }
+    } else if (frame instanceof BroadcastFrameSync) {
+      console.group(`${this.__logPrefix}Receive sync broadcast`);
+      try {
+        console.log('Sync:', frame);
+        for (const node of frame.newServers) {
+          this.__gameContext.addNode(node.addr, node.accessVersion,
+            node.addr === frame.transactor_addr ? 'transactor' : 'validator');
+        }
+        for (const node of frame.newPlayers) {
+          this.__gameContext.addNode(node.addr, node.accessVersion, 'player');
+          this.__onLoadProfile(node.accessVersion, node.addr);
+        }
+        this.__gameContext.setAccessVersion(frame.accessVersion);
+      } finally {
+        console.groupEnd();
+      }
+    } else if (frame instanceof BroadcastFrameEvent) {
+      const { event, timestamp, stateSha } = frame;
+      await this.__handleEvent(event, timestamp, stateSha);
+    } else if (frame instanceof BroadcastFrameEventHistories) {
+      console.group(`${this.__logPrefix}Receive event histories`);
+      try {
+        console.log('Frame:', frame);
+        console.log('Game context before:', clone(this.__gameContext));
+        await this.__handler.initState(this.__gameContext);
+        await this.__checkStateSha(frame.stateSha, 'checkpoint-state-sha-mismatch');
+        console.log('Game context after:', clone(this.__gameContext));
+
+        this.__invokeEventCallback(new Init());
+
+        for (const h of frame.histories) {
+          await this.__handleEvent(h.event, h.timestamp, h.stateSha);
+        }
+        this.__invokeEventCallback(new EndOfHistory())
+      } finally {
+        console.groupEnd();
+      }
+    }
+  }
+
+  async __startSubscribe(): Promise<void> {
+    await this.__connection.connect(new SubscribeEventParams({ settleVersion: this.__gameContext.settleVersion }));
+  }
+
+  async __handleConnectionState(state: ConnectionState) {
+    if (state === 'disconnected') {
+      if (this.__onConnectionState !== undefined) {
+        this.__onConnectionState('disconnected')
+      }
+      console.log('Disconnected, try reset state and context');
+      await this.__startSubscribe();
+    } else if (state === 'connected') {
+      if (this.__onConnectionState !== undefined) {
+        this.__onConnectionState('connected')
+      }
+    } else if (state === 'closed') {
+      if (this.__onConnectionState !== undefined) {
+        this.__onConnectionState('closed')
+      }
+    } else if (state === 'reconnected') {
+      if (this.__onConnectionState !== undefined) {
+        this.__onConnectionState('reconnected')
+      }
+    }
+  }
+
+  get gameId(): number {
+    return this.__gameId;
+  }
+}
diff --git a/js/sdk-core/src/broadcast-frames.ts b/js/sdk-core/src/broadcast-frames.ts
new file mode 100644
index 00000000..cee8579a
--- /dev/null
+++ b/js/sdk-core/src/broadcast-frames.ts
@@ -0,0 +1,120 @@
+import { TxState } from './tx-state';
+import { PlayerJoin, ServerJoin } from './accounts';
+import { array, enums, field, option, struct, variant } from '@race-foundation/borsh';
+import { EventHistory, GameEvent } from './events';
+import { CheckpointOffChain } from './checkpoint';
+
+export type BroadcastFrameKind =
+  | 'Invalid'
+  | 'Event'
+  | 'Message'
+  | 'TxState'
+  | 'Sync'
+  | 'EventHistories'
+
+export class Message {
+  @field('string')
+  sender!: string;
+  @field('string')
+  content!: string;
+  constructor(fields: any) {
+    Object.assign(this, fields);
+  }
+}
+
+export abstract class BroadcastFrame {
+  kind(): BroadcastFrameKind {
+    return 'Invalid'
+  }
+}
+
+@variant(0)
+export class BroadcastFrameEvent extends BroadcastFrame {
+  @field('string')
+  target!: string;
+  @field(enums(GameEvent))
+  event!: GameEvent;
+  @field('u64')
+  timestamp!: bigint;
+  @field('string')
+  stateSha!: string;
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, BroadcastFrameEvent.prototype);
+  }
+  kind(): BroadcastFrameKind {
+    return 'Event'
+  }
+}
+
+@variant(1)
+export class BroadcastFrameMessage extends BroadcastFrame {
+  @field('string')
+  target!: string;
+  @field(struct(Message))
+  message!: Message;
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, BroadcastFrameMessage.prototype);
+  }
+  kind(): BroadcastFrameKind {
+    return 'Message'
+  }
+}
+
+@variant(2)
+export class BroadcastFrameTxState extends BroadcastFrame {
+  @field(enums(TxState))
+  txState!: TxState;
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, BroadcastFrameTxState.prototype);
+  }
+  kind(): BroadcastFrameKind {
+    return 'TxState'
+  }
+}
+
+@variant(3)
+export class BroadcastFrameSync extends BroadcastFrame {
+  @field(array(struct(PlayerJoin)))
+  newPlayers!: PlayerJoin[];
+  @field(array(struct(ServerJoin)))
+  newServers!: ServerJoin[];
+  @field('string')
+  transactor_addr!: string;
+  @field('u64')
+  accessVersion!: bigint;
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields)
+    Object.setPrototypeOf(this, BroadcastFrameSync.prototype);
+  }
+  kind(): BroadcastFrameKind {
+    return 'Sync'
+  }
+}
+
+@variant(4)
+export class BroadcastFrameEventHistories extends BroadcastFrame {
+  @field('string')
+  gameAddr!: string;
+  @field(option(struct(CheckpointOffChain)))
+  checkpointOffChain: CheckpointOffChain | undefined;
+  @field(array(struct(EventHistory)))
+  histories!: EventHistory[];
+  @field('string')
+  stateSha!: string;
+
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, BroadcastFrameEventHistories.prototype);
+  }
+  kind(): BroadcastFrameKind {
+    return 'EventHistories'
+  }
+}
diff --git a/js/sdk-core/src/checkpoint.ts b/js/sdk-core/src/checkpoint.ts
new file mode 100644
index 00000000..2ef6aca9
--- /dev/null
+++ b/js/sdk-core/src/checkpoint.ts
@@ -0,0 +1,160 @@
+import { deserialize, field, map, struct } from '@race-foundation/borsh';
+import { sha256 } from './encryptor';
+
+export class CheckpointOnChain {
+  @field('u8-array')
+  root!: Uint8Array
+
+  @field('usize')
+  size!: number
+
+  @field('u64')
+  accessVersion!: bigint
+
+  constructor(fields: any) {
+    Object.assign(this, fields)
+  }
+
+  static fromRaw(raw: Uint8Array): CheckpointOnChain {
+    return deserialize(CheckpointOnChain, raw);
+  }
+}
+
+export class VersionedData {
+  @field('usize')
+  id!: number;
+
+  @field('u64')
+  version!: bigint;
+
+  @field('u8-array')
+  data!: Uint8Array;
+
+  @field('u8-array')
+  sha!: Uint8Array;
+
+  constructor(fields: any) {
+    Object.assign(this, fields);
+  }
+}
+
+export class CheckpointOffChain {
+  @field(map('usize', struct(VersionedData)))
+  data!: Map<number, VersionedData>
+
+  @field(map('usize', 'u8-array'))
+  proofs!: Map<number, Uint8Array>
+
+  constructor(fields: any) {
+    Object.assign(this, fields);
+  }
+
+  static deserialize(raw: Uint8Array): CheckpointOffChain {
+    return deserialize(CheckpointOffChain, raw)
+  }
+}
+
+/// Represent the on-chain checkpoint.
+export class Checkpoint {
+  @field('u8-array')
+  root!: Uint8Array;
+
+  @field('u64')
+  accessVersion!: bigint;
+
+  @field(map('usize', struct(VersionedData)))
+  data!: Map<number, VersionedData>;
+
+  @field(map('usize', 'u8-array'))
+  proofs!: Map<number, Uint8Array>;
+
+  constructor(fields: any) {
+    Object.assign(this, fields)
+  }
+
+  static default(): Checkpoint {
+    return new Checkpoint({ accessVersion: 0n, data: new Map() })
+  }
+
+  static fromParts(offchainPart: CheckpointOffChain, onchainPart: CheckpointOnChain): Checkpoint {
+    console.debug('Build checkpoint, offchain:', offchainPart, 'onchain:', onchainPart);
+    let checkpoint = Checkpoint.default();
+    checkpoint.proofs = offchainPart.proofs;
+    checkpoint.data = offchainPart.data;
+    checkpoint.accessVersion = onchainPart.accessVersion;
+    checkpoint.root = onchainPart.root;
+    return checkpoint;
+  }
+
+  static fromRaw(raw: Uint8Array): Checkpoint {
+    if (raw.length === 0) {
+      return Checkpoint.default();
+    }
+    return deserialize(Checkpoint, raw);
+  }
+
+  static fromData(id: number, version: bigint, data: Uint8Array): Checkpoint {
+    return new Checkpoint({
+      data: new Map([[id, new VersionedData({
+        version, data
+      })]])
+    });
+  }
+
+  clone(): Checkpoint {
+    return new Checkpoint({
+      accessVersion: this.accessVersion,
+      data: new Map(this.data.entries())
+    })
+  }
+
+  getData(id: number): Uint8Array | undefined  {
+    return this.data.get(id)?.data;
+  }
+
+  getSha(id: number): Uint8Array | undefined {
+    return this.data.get(id)?.sha;
+  }
+
+  setVersion(id: number, version: bigint) {
+    const data = this.data.get(id);
+    if (data !== undefined) {
+      data.version = version;
+    }
+  }
+
+  async setData(id: number, data: Uint8Array) {
+    const sha = await sha256(data);
+    const old = this.data.get(id);
+    if (old !== undefined) {
+      old.data = data;
+      old.version += 1n;
+      old.sha = sha;
+    } else {
+      this.data.set(id, new VersionedData({
+        id, sha, data, version: 1n
+      }))
+    }
+    this.updateRootAndProofs();
+  }
+
+  updateRootAndProofs() {
+
+  }
+
+
+  setAccessVersion(accessVersion: bigint) {
+    this.accessVersion = accessVersion;
+  }
+
+  __setVersion(id: number, version: bigint) {
+    let vd = this.data.get(id);
+    if (vd !== undefined) {
+      vd.version = version;
+    }
+  }
+
+  getVersion(id: number): bigint {
+    return this.data.get(id)?.version || 0n
+  }
+}
diff --git a/js/sdk-core/src/client.ts b/js/sdk-core/src/client.ts
index 7261ab7f..8d9bf28d 100644
--- a/js/sdk-core/src/client.ts
+++ b/js/sdk-core/src/client.ts
@@ -1,7 +1,6 @@
-import { AttachGameParams, IConnection, SubmitEventParams } from './connection';
+import { AttachGameParams, AttachResponse, IConnection, SubmitEventParams } from './connection';
 import { IEncryptor } from './encryptor';
 import { SecretState } from './secret-state';
-import { makeCustomEvent } from './events';
 import { GameContext } from './game-context';
 import { Id } from './types';
 
@@ -26,57 +25,46 @@ type OpIdent =
     };
 
 export class Client {
-  #encryptor: IEncryptor;
-  #connection: IConnection;
-  #gameAddr: string;
-  #addr: string;
-  #opHist: OpIdent[];
-  #secretState: SecretState;
+  __encryptor: IEncryptor;
+  __connection: IConnection;
+  __addr: string;
+  __opHist: OpIdent[];
+  __secretState: SecretState;
 
-  constructor(addr: string, gameAddr: string, encryptor: IEncryptor, connection: IConnection) {
-    this.#addr = addr;
-    this.#gameAddr = gameAddr;
-    this.#encryptor = encryptor;
-    this.#connection = connection;
-    this.#opHist = new Array();
-    this.#secretState = new SecretState(encryptor);
+  constructor(addr: string, encryptor: IEncryptor, connection: IConnection) {
+    this.__addr = addr;
+    this.__encryptor = encryptor;
+    this.__connection = connection;
+    this.__opHist = new Array();
+    this.__secretState = new SecretState(encryptor);
   }
 
-  async attachGame(): Promise<void> {
-    const key = await this.#encryptor.exportPublicKey(undefined);
-    await this.#connection.attachGame(
+  async attachGame(): Promise<AttachResponse> {
+    const key = await this.__encryptor.exportPublicKey(undefined);
+    return await this.__connection.attachGame(
       new AttachGameParams({
-        signer: this.#addr,
+        signer: this.__addr,
         key,
       })
     );
   }
 
   async submitEvent(event: any): Promise<void> {
-    await this.#connection.submitEvent(
+    await this.__connection.submitEvent(
       new SubmitEventParams({
         event,
       })
     );
   }
 
-  async submitCustomEvent(customEvent: any): Promise<void> {
-    const event = makeCustomEvent(this.#gameAddr, customEvent);
-    await this.#connection.submitEvent(
-      new SubmitEventParams({
-        event,
-      })
-    );
-  }
-
-  async handleDecision(ctx: GameContext): Promise<Event[]> {
+  async handleDecision(_ctx: GameContext): Promise<Event[]> {
     return [];
   }
 
   loadRandomStates(ctx: GameContext) {
     for (let randomState of ctx.randomStates) {
-      if (!this.#secretState.isRandomLoaded(randomState.id)) {
-        this.#secretState.genRandomStates(randomState.id, randomState.size);
+      if (!this.__secretState.isRandomLoaded(randomState.id)) {
+        this.__secretState.genRandomStates(randomState.id, randomState.size);
       }
     }
   }
@@ -88,21 +76,21 @@ export class Client {
   }
 
   flushSecretStates() {
-    this.#secretState.clear();
-    this.#opHist.splice(0);
+    this.__secretState.clear();
+    this.__opHist.splice(0);
   }
 
   async decrypt(ctx: GameContext, randomId: Id): Promise<Map<number, string>> {
     let randomState = ctx.getRandomState(randomId);
     let options = randomState.options;
-    let revealed = await this.#encryptor.decryptWithSecrets(
+    let revealed = await this.__encryptor.decryptWithSecrets(
       randomState.listRevealedCiphertexts(),
       randomState.listRevealedSecrets(),
       options
     );
-    let assigned = await this.#encryptor.decryptWithSecrets(
-      randomState.listAssignedCiphertexts(this.#addr),
-      randomState.listSharedSecrets(this.#addr),
+    let assigned = await this.__encryptor.decryptWithSecrets(
+      randomState.listAssignedCiphertexts(this.__addr),
+      randomState.listSharedSecrets(this.__addr),
       options
     );
 
diff --git a/js/sdk-core/src/connection.ts b/js/sdk-core/src/connection.ts
index 30a5c57d..eab3b0bd 100644
--- a/js/sdk-core/src/connection.ts
+++ b/js/sdk-core/src/connection.ts
@@ -1,12 +1,22 @@
 import { IEncryptor, PublicKeyRaws } from './encryptor';
-import { TxState } from './tx-state';
 import { GameEvent } from './events';
-import { deserialize, array, enums, field, option, serialize, struct, variant } from '@race-foundation/borsh';
+import { deserialize, enums, field, serialize, struct } from '@race-foundation/borsh';
 import { arrayBufferToBase64, base64ToUint8Array } from './utils';
+import { BroadcastFrame } from './broadcast-frames';
+import { CheckpointOffChain } from './checkpoint';
 
 export type ConnectionState = 'disconnected' | 'connected' | 'reconnected' | 'closed';
 
-type Method = 'attach_game' | 'submit_event' | 'exit_game' | 'subscribe_event' | 'submit_message' | 'ping';
+export type AttachResponse = 'success' | 'game-not-loaded';
+
+type Method = 'attach_game'
+  | 'submit_event'
+  | 'exit_game'
+  | 'subscribe_event'
+  | 'submit_message'
+  | 'get_state'
+  | 'ping'
+  | 'checkpoint';
 
 interface IAttachGameParams {
   signer: string;
@@ -25,11 +35,14 @@ interface ISubmitMessageParams {
   content: string;
 }
 
-interface ICheckTxStateParams {
-  newPlayers: string[];
-  accessVersion: bigint;
+interface IGetCheckpointParams {
+  settleVersion: bigint;
 }
 
+export type ConnectionSubscriptionItem = BroadcastFrame | ConnectionState | undefined;
+
+export type ConnectionSubscription = AsyncGenerator<ConnectionSubscriptionItem>;
+
 export class AttachGameParams {
   @field('string')
   signer: string;
@@ -70,56 +83,20 @@ export class SubmitMessageParams {
   }
 }
 
-export class Message {
-  @field('string')
-  sender!: string;
-  @field('string')
-  content!: string;
-  constructor(fields: any) {
-    Object.assign(this, fields);
-  }
-}
-
-export abstract class BroadcastFrame { }
-
-@variant(0)
-export class BroadcastFrameEvent extends BroadcastFrame {
-  @field('string')
-  gameAddr!: string;
-  @field(enums(GameEvent))
-  event!: GameEvent;
+export class GetCheckpointParams {
   @field('u64')
-  timestamp!: bigint;
-  constructor(fields: any) {
-    super();
-    Object.assign(this, fields);
+  settleVersion: bigint;
+  constructor(fields: IGetCheckpointParams) {
+    this.settleVersion = fields.settleVersion;
   }
 }
 
-@variant(1)
-export class BroadcastFrameMessage extends BroadcastFrame {
-  @field('string')
-  gameAddr!: string;
-  @field(struct(Message))
-  message!: Message;
-  constructor(fields: any) {
-    super();
-    Object.assign(this, fields);
-  }
-}
+export interface IConnection {
+  attachGame(params: AttachGameParams): Promise<AttachResponse>;
 
-@variant(2)
-export class BroadcastFrameTxState extends BroadcastFrame {
-  @field(enums(TxState))
-  txState!: TxState;
-  constructor(fields: any) {
-    super();
-    Object.assign(this, fields);
-  }
-}
+  getState(): Promise<Uint8Array>;
 
-export interface IConnection {
-  attachGame(params: AttachGameParams): Promise<void>;
+  getCheckpoint(params: GetCheckpointParams): Promise<CheckpointOffChain | undefined>;
 
   submitEvent(params: SubmitEventParams): Promise<ConnectionState | undefined>;
 
@@ -129,11 +106,17 @@ export interface IConnection {
 
   connect(params: SubscribeEventParams): Promise<void>;
 
-  subscribeEvents(): AsyncGenerator<BroadcastFrame | ConnectionState | undefined>;
+  disconnect(): void;
+
+  subscribeEvents(): ConnectionSubscription;
 }
 
+type StreamMessageType = BroadcastFrame | ConnectionState | undefined;
+
 export class Connection implements IConnection {
-  gameAddr: string;
+  // The target to connect, in normal game the target is the address
+  // of game.  In a sub game, the target is constructed as ADDR:ID.
+  target: string;
   playerAddr: string;
   endpoint: string;
   encryptor: IEncryptor;
@@ -142,9 +125,9 @@ export class Connection implements IConnection {
   closed: boolean;
 
   // For async message stream
-  streamResolve?: ((value: BroadcastFrame | ConnectionState | undefined) => void);
-  streamMessageQueue: BroadcastFrame[];
-  streamMessagePromise?: Promise<BroadcastFrame | ConnectionState | undefined>;
+  streamResolve?: ((value: StreamMessageType) => void);
+  streamMessageQueue: StreamMessageType[];
+  streamMessagePromise?: Promise<StreamMessageType>;
 
   // For keep alive
   lastPong: number;
@@ -152,8 +135,8 @@ export class Connection implements IConnection {
 
   isFirstOpen: boolean;
 
-  constructor(gameAddr: string, playerAddr: string, endpoint: string, encryptor: IEncryptor) {
-    this.gameAddr = gameAddr;
+  constructor(target: string, playerAddr: string, endpoint: string, encryptor: IEncryptor) {
+    this.target = target;
     this.playerAddr = playerAddr;
     this.endpoint = endpoint;
     this.encryptor = encryptor;
@@ -197,7 +180,7 @@ export class Connection implements IConnection {
   }
 
   async connect(params: SubscribeEventParams) {
-    console.log('Establishing server connection, settle version:', params.settleVersion);
+    console.log(`Establishing server connection, target: ${this.target}, settle version: ${params.settleVersion}`)
     this.socket = new WebSocket(this.endpoint);
 
     this.clearCheckTimer();
@@ -235,7 +218,7 @@ export class Connection implements IConnection {
           return;
         }
         if (this.socket !== undefined && this.socket.readyState === this.socket.OPEN) {
-          this.socket.send(this.makeReqNoSig(this.gameAddr, 'ping', {}));
+          this.socket.send(this.makeReqNoSig(this.target, 'ping', {}));
         }
       }, 3000);
 
@@ -260,18 +243,36 @@ export class Connection implements IConnection {
     };
 
     // Call JSONRPC subscribe_event
-    const req = this.makeReqNoSig(this.gameAddr, 'subscribe_event', params);
+    const req = this.makeReqNoSig(this.target, 'subscribe_event', params);
     await this.requestWs(req);
   }
 
-  async attachGame(params: AttachGameParams): Promise<void> {
-    const req = this.makeReqNoSig(this.gameAddr, 'attach_game', params);
-    await this.requestXhr(req);
+  async attachGame(params: AttachGameParams): Promise<AttachResponse> {
+    const req = this.makeReqNoSig(this.target, 'attach_game', params);
+    const resp: any = await this.requestXhr(req);
+    if (resp.error !== undefined) {
+      return 'game-not-loaded';
+    }  else {
+      return 'success';
+    }
+  }
+
+  async getState(): Promise<Uint8Array> {
+    const req = this.makeReqNoSig(this.target, 'get_state', {});
+    const resp: { result: string } = await this.requestXhr(req);
+    return Uint8Array.from(JSON.parse(resp.result));
+  }
+
+  async getCheckpoint(params: GetCheckpointParams): Promise<CheckpointOffChain | undefined> {
+    const req = this.makeReqNoSig(this.target, 'checkpoint', params)
+    const resp: { result: number[] | null } = await this.requestXhr(req);
+    if (!resp.result) return undefined;
+    return CheckpointOffChain.deserialize(Uint8Array.from(resp.result));
   }
 
   async submitEvent(params: SubmitEventParams): Promise<ConnectionState | undefined> {
     try {
-      const req = await this.makeReq(this.gameAddr, 'submit_event', params);
+      const req = await this.makeReq(this.target, 'submit_event', params);
       await this.requestXhr(req);
       return undefined;
     } catch (_: any) {
@@ -281,7 +282,7 @@ export class Connection implements IConnection {
 
   async submitMessage(params: SubmitMessageParams): Promise<ConnectionState | undefined> {
     try {
-      const req = await this.makeReq(this.gameAddr, 'submit_message', params);
+      const req = await this.makeReq(this.target, 'submit_message', params);
       await this.requestXhr(req);
       return undefined;
     } catch (_: any) {
@@ -289,55 +290,66 @@ export class Connection implements IConnection {
     }
   }
 
+  disconnect() {
+    if (this.socket !== undefined) {
+      this.closed = true;
+      this.socket.close();
+      this.socket = undefined;
+    }
+  }
+
   async exitGame(params: ExitGameParams): Promise<void> {
-    const req = await this.makeReq(this.gameAddr, 'exit_game', {});
+    const req = await this.makeReq(this.target, 'exit_game', {});
     await this.requestXhr(req);
-    if (!params.keepConnection) {
-      if (this.socket !== undefined) {
-        this.closed = true;
-        this.socket.close();
-        this.socket = undefined;
-      }
-    }
+    if (!params.keepConnection) this.disconnect();
   }
 
   async *subscribeEvents(): AsyncGenerator<BroadcastFrame | ConnectionState | undefined> {
     await this.waitSocketReady();
     this.streamMessagePromise = new Promise(r => (this.streamResolve = r));
     while (true) {
-      if (this.streamMessageQueue.length > 0) {
-        yield this.streamMessageQueue.shift()!;
+      while (this.streamMessageQueue.length > 0) {
+        yield this.streamMessageQueue.shift();
+      }
+      if (this.streamResolve === undefined) {
+        this.streamMessagePromise = new Promise(r => (this.streamResolve = r));
+        yield this.streamMessagePromise;
       } else {
         yield this.streamMessagePromise;
-        this.streamMessagePromise = new Promise(r => (this.streamResolve = r));
       }
     }
   }
 
   parseEventMessage(raw: string): BroadcastFrame | ConnectionState | undefined {
-    let resp = JSON.parse(raw);
-    if (resp.result === 'pong') {
-      this.lastPong = new Date().getTime();
-      return undefined;
-    } else if (resp.method === 's_event') {
-      if (resp.params.error === undefined) {
-        let result: string = resp.params.result;
-        let data = base64ToUint8Array(result);
-        let frame = deserialize(BroadcastFrame, data);
-        return frame;
+    try {
+      let resp = JSON.parse(raw);
+      if (resp.result === 'pong') {
+        this.lastPong = new Date().getTime();
+        return undefined;
+      } else if (resp.method === 's_event') {
+        if (resp.params.error === undefined) {
+          let result: string = resp.params.result;
+          let data = base64ToUint8Array(result);
+          let frame = deserialize(BroadcastFrame, data);
+          return frame;
+        } else {
+          return 'disconnected'
+        }
       } else {
-        return 'disconnected'
+        return undefined;
       }
-    } else {
-      return undefined;
+    } catch (e) {
+      console.error(`Parse event message error: ${raw}`)
+      throw e
     }
   }
 
-  static initialize(gameAddr: string, playerAddr: string, endpoint: string, encryptor: IEncryptor): Connection {
-    return new Connection(gameAddr, playerAddr, endpoint, encryptor);
+  static initialize(target: string, playerAddr: string, endpoint: string, encryptor: IEncryptor): Connection {
+    return new Connection(target, playerAddr, endpoint, encryptor);
   }
 
-  async makeReq<P>(gameAddr: string, method: Method, params: P): Promise<string> {
+  async makeReq<P>(target: string, method: Method, params: P): Promise<string> {
+    console.log(`Connection request, target: ${target}, method: ${method}, params:`, params)
     const paramsBytes = serialize(params);
     const sig = await this.encryptor.sign(paramsBytes, this.playerAddr);
     const sigBytes = serialize(sig);
@@ -345,17 +357,20 @@ export class Connection implements IConnection {
       jsonrpc: '2.0',
       method,
       id: crypto.randomUUID(),
-      params: [gameAddr, arrayBufferToBase64(paramsBytes), arrayBufferToBase64(sigBytes)],
+      params: [target, arrayBufferToBase64(paramsBytes), arrayBufferToBase64(sigBytes)],
     });
   }
 
-  makeReqNoSig<P>(gameAddr: string, method: Method, params: P): string {
+  makeReqNoSig<P>(target: string, method: Method, params: P): string {
+    if (method !== 'ping') {
+      console.log(`Connection request[NoSig], target: ${target}, method: ${method}, params:`, params)
+    }
     const paramsBytes = serialize(params);
     return JSON.stringify({
       jsonrpc: '2.0',
       method,
       id: crypto.randomUUID(),
-      params: [gameAddr, arrayBufferToBase64(paramsBytes)],
+      params: [target, arrayBufferToBase64(paramsBytes)],
     });
   }
 
@@ -381,7 +396,9 @@ export class Connection implements IConnection {
         },
       });
       if (resp.ok) {
-        return resp.json();
+        const ret = await resp.json();
+        console.debug('Response:', ret);
+        return ret;
       } else {
         throw Error('Transactor request failed:' + resp.json());
       }
diff --git a/js/sdk-core/src/effect.ts b/js/sdk-core/src/effect.ts
index 17b39648..de0e13dd 100644
--- a/js/sdk-core/src/effect.ts
+++ b/js/sdk-core/src/effect.ts
@@ -3,6 +3,7 @@ import { HandleError } from './error';
 import { GameContext } from './game-context';
 import { enums, field, map, option, struct, variant, array } from '@race-foundation/borsh';
 import { Fields, Id } from './types';
+import { GamePlayer, InitAccount } from './init-account';
 
 export abstract class SettleOp {}
 
@@ -34,12 +35,12 @@ export class SettleEject extends SettleOp {
 }
 
 export class Settle {
-  @field('string')
-  addr: string;
+  @field('u64')
+  id: bigint;
   @field(enums(SettleOp))
   op: SettleOp;
-  constructor(fields: { addr: string; op: SettleOp }) {
-    this.addr = fields.addr;
+  constructor(fields: { id: bigint; op: SettleOp }) {
+    this.id = fields.id;
     this.op = fields.op;
   }
   sortKey(): number {
@@ -77,8 +78,8 @@ export class Ask {
 export class Assign {
   @field('usize')
   randomId!: number;
-  @field('string')
-  playerAddr!: string;
+  @field('u64')
+  playerId!: bigint;
   @field(array('usize'))
   indexes!: number[];
   constructor(fields: Fields<Assign>) {
@@ -105,8 +106,8 @@ export class Release {
 }
 
 export class ActionTimeout {
-  @field('string')
-  playerAddr!: string;
+  @field('u64')
+  playerId!: bigint;
   @field('u64')
   timeout!: bigint;
   constructor(fields: Fields<ActionTimeout>) {
@@ -114,6 +115,31 @@ export class ActionTimeout {
   }
 }
 
+export class SubGame {
+  @field('usize')
+  gameId!: number;
+  @field('string')
+  bundleAddr!: string;
+  @field(struct(InitAccount))
+  initAccount!: InitAccount;
+  constructor(fields: Fields<SubGame>) {
+    Object.assign(this, fields)
+  }
+}
+
+export class EmitBridgeEvent {
+  @field('usize')
+  dest!: number;
+  @field('u8-array')
+  raw!: Uint8Array;
+  @field(array(struct(GamePlayer)))
+  joinPlayers!: GamePlayer[];
+
+  constructor(fields: Fields<EmitBridgeEvent>) {
+    Object.assign(this, fields)
+  }
+}
+
 export class Effect {
   @field(option(struct(ActionTimeout)))
   actionTimeout: ActionTimeout | undefined;
@@ -140,10 +166,7 @@ export class Effect {
   currDecisionId!: number;
 
   @field('u16')
-  playersCount!: number;
-
-  @field('u16')
-  serversCount!: number;
+  nodesCount!: number;
 
   @field(array(struct(Ask)))
   asks!: Ask[];
@@ -169,9 +192,6 @@ export class Effect {
   @field('bool')
   isCheckpoint!: boolean;
 
-  @field(option('u8-array'))
-  checkpoint!: Uint8Array | undefined;
-
   @field(array(struct(Settle)))
   settles!: Settle[];
 
@@ -187,11 +207,23 @@ export class Effect {
   @field(array(struct(Transfer)))
   transfers!: Transfer[];
 
+  @field(array(struct(SubGame)))
+  launchSubGames!: SubGame[];
+
+  @field(array(struct(EmitBridgeEvent)))
+  bridgeEvents!: EmitBridgeEvent[];
+
+  @field(array(struct(GamePlayer)))
+  validPlayers!: GamePlayer[];
+
+  @field('bool')
+  isInit!: boolean;
+
   constructor(fields: Fields<Effect>) {
     Object.assign(this, fields);
   }
 
-  static fromContext(context: GameContext) {
+  static fromContext(context: GameContext, isInit: boolean) {
     const revealed = new Map<Id, Map<number, string>>();
     for (const st of context.randomStates) {
       revealed.set(st.id, st.revealed);
@@ -205,23 +237,24 @@ export class Effect {
     const startGame = false;
     const stopGame = false;
     const cancelDispatch = false;
-    const timestamp = context.timestamp;
+    const timestamp = isInit ? 0n : context.timestamp;
     const currRandomId = context.randomStates.length + 1;
     const currDecisionId = context.decisionStates.length + 1;
-    const playersCount = context.players.length;
-    const serversCount = context.servers.length;
+    const nodesCount = context.nodes.length;
     const asks: Ask[] = [];
     const assigns: Assign[] = [];
     const releases: Release[] = [];
     const reveals: Reveal[] = [];
     const initRandomStates: RandomSpec[] = [];
     const isCheckpoint = false;
-    const checkpoint = undefined;
     const settles: Settle[] = [];
     const handlerState = context.handlerState;
     const error = undefined;
     const allowExit = context.allowExit;
     const transfers: Transfer[] = [];
+    const launchSubGames: SubGame[] = [];
+    const bridgeEvents: EmitBridgeEvent[] = [];
+    const validPlayers = context.players;
     return new Effect({
       actionTimeout,
       waitTimeout,
@@ -231,8 +264,7 @@ export class Effect {
       timestamp,
       currRandomId,
       currDecisionId,
-      playersCount,
-      serversCount,
+      nodesCount,
       asks,
       assigns,
       releases,
@@ -241,12 +273,15 @@ export class Effect {
       revealed,
       answered,
       isCheckpoint,
-      checkpoint,
       settles,
       handlerState,
       error,
       allowExit,
       transfers,
+      launchSubGames,
+      bridgeEvents,
+      validPlayers,
+      isInit
     });
   }
 }
diff --git a/js/sdk-core/src/encryptor.ts b/js/sdk-core/src/encryptor.ts
index cc9649d7..b6f62453 100644
--- a/js/sdk-core/src/encryptor.ts
+++ b/js/sdk-core/src/encryptor.ts
@@ -9,7 +9,7 @@ const ENCRYPTOR_VERSION = '1.0';
 
 let subtle: SubtleCrypto;
 if (typeof window === 'undefined') {
-  const crypto = require('node:crypto')
+  const crypto = require('crypto')
   subtle = crypto.subtle
 } else {
   subtle = window.crypto.subtle
@@ -457,3 +457,15 @@ export class Encryptor implements IEncryptor {
     return res;
   }
 }
+
+export async function sha256(data: Uint8Array): Promise<Uint8Array> {
+  let hashBuffer = await subtle.digest('SHA-256', data)
+  return new Uint8Array(hashBuffer);
+}
+
+
+export async function sha256String(data: Uint8Array): Promise<string> {
+  return Array.from(await sha256(data))
+    .map(byte => byte.toString(16).padStart(2, '0'))
+    .join('');
+}
diff --git a/js/sdk-core/src/error.ts b/js/sdk-core/src/error.ts
index c6dd8ec5..d1e986c8 100644
--- a/js/sdk-core/src/error.ts
+++ b/js/sdk-core/src/error.ts
@@ -21,10 +21,10 @@ export class NoEnoughPlayers extends HandleError {
 }
 
 @variant(2)
-export class PlayerNotInGame extends HandleError {
+export class InvalidPlayer extends HandleError {
   constructor(_: any) {
     super();
-    this.message = 'Player not in game';
+    this.message = 'Invalid player';
   }
 }
 
@@ -53,6 +53,14 @@ export class MalformedGameAccountData extends HandleError {
 }
 
 @variant(6)
+export class MalformedCheckpointData extends HandleError {
+  constructor(_: any) {
+    super();
+    this.message = 'Malformed checkpoint data';
+  }
+}
+
+@variant(7)
 export class MalformedCustomEvent extends HandleError {
   constructor(_: any) {
     super();
@@ -60,7 +68,15 @@ export class MalformedCustomEvent extends HandleError {
   }
 }
 
-@variant(7)
+@variant(8)
+export class MalformedBridgeEvent extends HandleError {
+  constructor(_: any) {
+    super();
+    this.message = 'Malformed bridge event';
+  }
+}
+
+@variant(9)
 export class SerializationError extends HandleError {
   constructor(_: any) {
     super();
@@ -68,7 +84,7 @@ export class SerializationError extends HandleError {
   }
 }
 
-@variant(8)
+@variant(10)
 export class NoEnoughServers extends HandleError {
   constructor(_: any) {
     super();
@@ -76,7 +92,7 @@ export class NoEnoughServers extends HandleError {
   }
 }
 
-@variant(9)
+@variant(11)
 export class InternalError extends HandleError {
   @field('string')
   message: string;
@@ -114,4 +130,8 @@ export class SdkError extends Error {
   static tokenNotFound(addr: string) {
     return new SdkError(`Token ${addr} not found`);
   }
+
+  static invalidSubId(gameId: number) {
+    return new SdkError(`Invalid gameId: ${gameId}`);
+  }
 }
diff --git a/js/sdk-core/src/events.ts b/js/sdk-core/src/events.ts
index 1f361268..0aef51eb 100644
--- a/js/sdk-core/src/events.ts
+++ b/js/sdk-core/src/events.ts
@@ -1,6 +1,6 @@
 import { field, array, enums, option, variant, struct } from '@race-foundation/borsh';
-import { PlayerJoin, ServerJoin } from './accounts';
 import { Fields, Id } from './types';
+import { GamePlayer } from './init-account';
 
 type EventFields<T> = Omit<Fields<T>, 'kind'>;
 
@@ -13,7 +13,7 @@ export type EventKind =
   | 'Mask'
   | 'Lock'
   | 'RandomnessReady'
-  | 'Sync'
+  | 'Join'
   | 'ServerLeave'
   | 'Leave'
   | 'GameStart'
@@ -23,12 +23,21 @@ export type EventKind =
   | 'ActionTimeout'
   | 'AnswerDecision'
   | 'SecretsReady'
-  | 'Shutdown';
+  | 'Shutdown'
+  | 'Bridge'
+  // Client-only events
+  | 'Init'
+  | 'Checkpoint'
+  | 'EndOfHistory';
 
 export interface ICustomEvent {
   serialize(): Uint8Array;
 }
 
+export interface IBridgeEvent {
+  serialize(): Uint8Array;
+}
+
 interface IEventKind {
   kind(): EventKind;
 }
@@ -50,6 +59,7 @@ export class Random extends SecretShare {
   constructor(fields: EventFields<Random>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Random.prototype)
   }
 }
 
@@ -64,6 +74,7 @@ export class Answer extends SecretShare {
   constructor(fields: EventFields<Answer>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Answer.prototype)
   }
 }
 
@@ -73,22 +84,36 @@ export abstract class GameEvent implements IEventKind {
   }
 }
 
+export class EventHistory {
+  @field(enums(GameEvent))
+  event!: GameEvent;
+  @field('u64')
+  timestamp!: bigint;
+  @field('string')
+  stateSha!: string;
+  constructor(fields: EventFields<Answer>) {
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, EventHistory.prototype);
+  }
+}
+
 @variant(0)
 export class Custom extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field('u8-array')
   raw!: Uint8Array;
   constructor(fields: EventFields<Custom>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Custom.prototype)
   }
   kind(): EventKind {
     return 'Custom';
   }
 }
 
-export function makeCustomEvent(sender: string, customEvent: ICustomEvent): Custom {
+export function makeCustomEvent(sender: bigint, customEvent: ICustomEvent): Custom {
   return new Custom({
     sender,
     raw: customEvent.serialize(),
@@ -99,6 +124,7 @@ export function makeCustomEvent(sender: string, customEvent: ICustomEvent): Cust
 export class Ready extends GameEvent implements IEventKind {
   constructor(_: any = {}) {
     super();
+    Object.setPrototypeOf(this, Ready.prototype)
   }
   kind(): EventKind {
     return 'Ready';
@@ -107,13 +133,14 @@ export class Ready extends GameEvent implements IEventKind {
 
 @variant(2)
 export class ShareSecrets extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field(array(enums(SecretShare)))
   shares!: SecretShare[];
   constructor(fields: EventFields<ShareSecrets>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, ShareSecrets.prototype)
   }
   kind(): EventKind {
     return 'ShareSecrets';
@@ -122,10 +149,11 @@ export class ShareSecrets extends GameEvent implements IEventKind {
 
 @variant(3)
 export class OperationTimeout extends GameEvent implements IEventKind {
-  @field(array('string'))
-  addrs!: string[];
+  @field(array('u64'))
+  ids!: bigint[];
   constructor(fields: EventFields<OperationTimeout>) {
     super();
+    Object.setPrototypeOf(this, OperationTimeout.prototype)
     Object.assign(this, fields);
   }
   kind(): EventKind {
@@ -135,8 +163,8 @@ export class OperationTimeout extends GameEvent implements IEventKind {
 
 @variant(4)
 export class Mask extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field('usize')
   randomId!: Id;
   @field(array('u8-array'))
@@ -144,6 +172,7 @@ export class Mask extends GameEvent implements IEventKind {
   constructor(fields: EventFields<Mask>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Mask.prototype)
   }
   kind(): EventKind {
     return 'Mask';
@@ -162,8 +191,8 @@ export class CiphertextAndDigest {
 
 @variant(5)
 export class Lock extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field('usize')
   randomId!: Id;
   @field(array(struct(CiphertextAndDigest)))
@@ -171,6 +200,7 @@ export class Lock extends GameEvent implements IEventKind {
   constructor(fields: EventFields<Lock>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Lock.prototype)
   }
   kind(): EventKind {
     return 'Lock';
@@ -184,6 +214,7 @@ export class RandomnessReady extends GameEvent implements IEventKind {
   constructor(fields: EventFields<RandomnessReady>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, RandomnessReady.prototype)
   }
   kind(): EventKind {
     return 'RandomnessReady';
@@ -191,33 +222,27 @@ export class RandomnessReady extends GameEvent implements IEventKind {
 }
 
 @variant(7)
-export class Sync extends GameEvent implements IEventKind {
-  @field(array(struct(PlayerJoin)))
-  newPlayers!: PlayerJoin[];
-  @field(array(struct(ServerJoin)))
-  newServers!: ServerJoin[];
-  @field('string')
-  transactorAddr!: string;
-  @field('u64')
-  accessVersion!: bigint;
-  constructor(fields: EventFields<Sync>) {
+export class Join extends GameEvent implements IEventKind {
+  @field(array(struct(GamePlayer)))
+  players!: GamePlayer[];
+  constructor(fields: EventFields<Join>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Join.prototype)
   }
   kind(): EventKind {
-    return 'Sync';
+    return 'Join';
   }
 }
 
 @variant(8)
 export class ServerLeave extends GameEvent implements IEventKind {
-  @field('string')
-  serverAddr!: string;
-  @field('string')
-  transactorAddr!: string;
+  @field('u64')
+  serverId!: bigint;
   constructor(fields: EventFields<ServerLeave>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, ServerLeave.prototype)
   }
   kind(): EventKind {
     return 'ServerLeave';
@@ -226,11 +251,12 @@ export class ServerLeave extends GameEvent implements IEventKind {
 
 @variant(9)
 export class Leave extends GameEvent implements IEventKind {
-  @field('string')
-  playerAddr!: string;
+  @field('u64')
+  playerId!: bigint;
   constructor(fields: EventFields<Leave>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, Leave.prototype)
   }
   kind(): EventKind {
     return 'Leave';
@@ -239,11 +265,9 @@ export class Leave extends GameEvent implements IEventKind {
 
 @variant(10)
 export class GameStart extends GameEvent implements IEventKind {
-  @field('u64')
-  accessVersion!: bigint;
-  constructor(fields: EventFields<GameStart>) {
+  constructor(_: any = {}) {
     super();
-    Object.assign(this, fields);
+    Object.setPrototypeOf(this, GameStart.prototype)
   }
   kind(): EventKind {
     return 'GameStart';
@@ -254,6 +278,7 @@ export class GameStart extends GameEvent implements IEventKind {
 export class WaitingTimeout extends GameEvent implements IEventKind {
   constructor(_: any = {}) {
     super();
+    Object.setPrototypeOf(this, WaitingTimeout.prototype)
   }
   kind(): EventKind {
     return 'WaitingTimeout';
@@ -262,8 +287,8 @@ export class WaitingTimeout extends GameEvent implements IEventKind {
 
 @variant(12)
 export class DrawRandomItems extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field('usize')
   randomId!: Id;
   @field(array('usize'))
@@ -271,6 +296,7 @@ export class DrawRandomItems extends GameEvent implements IEventKind {
   constructor(fields: EventFields<DrawRandomItems>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, DrawRandomItems.prototype)
   }
   kind(): EventKind {
     return 'DrawRandomItems';
@@ -281,6 +307,7 @@ export class DrawRandomItems extends GameEvent implements IEventKind {
 export class DrawTimeout extends GameEvent implements IEventKind {
   constructor(_: {}) {
     super();
+    Object.setPrototypeOf(this, DrawTimeout.prototype)
   }
   kind(): EventKind {
     return 'DrawTimeout';
@@ -289,11 +316,12 @@ export class DrawTimeout extends GameEvent implements IEventKind {
 
 @variant(14)
 export class ActionTimeout extends GameEvent implements IEventKind {
-  @field('string')
-  playerAddr!: string;
+  @field('u64')
+  playerId!: bigint;
   constructor(fields: EventFields<ActionTimeout>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, ActionTimeout.prototype)
   }
   kind(): EventKind {
     return 'ActionTimeout';
@@ -302,8 +330,8 @@ export class ActionTimeout extends GameEvent implements IEventKind {
 
 @variant(15)
 export class AnswerDecision extends GameEvent implements IEventKind {
-  @field('string')
-  sender!: string;
+  @field('u64')
+  sender!: bigint;
   @field('usize')
   decisionId!: Id;
   @field('u8-array')
@@ -313,6 +341,7 @@ export class AnswerDecision extends GameEvent implements IEventKind {
   constructor(fields: EventFields<AnswerDecision>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, AnswerDecision.prototype)
   }
   kind(): EventKind {
     return 'AnswerDecision';
@@ -327,6 +356,7 @@ export class SecretsReady extends GameEvent implements IEventKind {
   constructor(fields: EventFields<SecretsReady>) {
     super();
     Object.assign(this, fields);
+    Object.setPrototypeOf(this, SecretsReady.prototype)
   }
   kind(): EventKind {
     return 'SecretsReady';
@@ -337,8 +367,58 @@ export class SecretsReady extends GameEvent implements IEventKind {
 export class Shutdown extends GameEvent implements IEventKind {
   constructor(_: any = {}) {
     super();
+    Object.setPrototypeOf(this, Shutdown.prototype)
   }
   kind(): EventKind {
     return 'Shutdown';
   }
 }
+
+@variant(18)
+export class Bridge extends GameEvent implements IEventKind {
+  @field('usize')
+  dest!: number;
+  @field('u8-array')
+  raw!: Uint8Array;
+  @field(array(struct(GamePlayer)))
+  joinPlayers!: GamePlayer[];
+
+  constructor(fields: EventFields<Bridge>) {
+    super();
+    Object.assign(this, fields);
+    Object.setPrototypeOf(this, Bridge.prototype)
+  }
+
+  kind(): EventKind {
+    return 'Bridge';
+  }
+}
+
+// Client-only events, they can't be serialized and deserialized.
+
+export class Init extends GameEvent implements IEventKind {
+  constructor() {
+    super();
+  }
+  kind(): EventKind {
+    return 'Init'
+  }
+}
+
+export class CheckpointReady extends GameEvent implements IEventKind {
+  constructor() {
+    super();
+  }
+  kind(): EventKind {
+    return 'Checkpoint'
+  }
+}
+
+export class EndOfHistory extends GameEvent implements IEventKind {
+  constructor() {
+    super();
+  }
+  kind(): EventKind {
+    return 'EndOfHistory'
+  }
+}
diff --git a/js/sdk-core/src/game-context-snapshot.ts b/js/sdk-core/src/game-context-snapshot.ts
index bac62e87..ee2dce8b 100644
--- a/js/sdk-core/src/game-context-snapshot.ts
+++ b/js/sdk-core/src/game-context-snapshot.ts
@@ -1,29 +1,11 @@
-import { PlayerProfile } from './accounts';
-import { GameContext, GameStatus, IPlayer, IServer, NodeStatus } from './game-context';
+import { GameContext, GameStatus, INode, NodeStatus } from './game-context';
 
-export class PlayerShapshot {
+export class NodeSnapshot {
   readonly addr: string;
-  readonly position: number;
-  readonly balance: bigint;
   readonly status: NodeStatus;
-  profile?: PlayerProfile;
 
-  constructor(o: IPlayer) {
+  constructor(o: INode) {
     this.addr = o.addr;
-    this.balance = o.balance;
-    this.position = o.position;
-    this.status = o.status;
-  }
-}
-
-export class ServerShapshot {
-  readonly addr: string;
-  readonly endpoint: string;
-  readonly status: NodeStatus;
-
-  constructor(o: IServer) {
-    this.addr = o.addr;
-    this.endpoint = o.endpoint;
     this.status = o.status;
   }
 }
@@ -34,8 +16,7 @@ export class GameContextSnapshot {
   readonly settleVersion: bigint;
   readonly status: GameStatus;
   readonly allowExit: boolean;
-  readonly players: PlayerShapshot[];
-  readonly servers: ServerShapshot[];
+  readonly nodes: NodeSnapshot[];
 
   constructor(context: GameContext) {
     this.gameAddr = context.gameAddr;
@@ -43,7 +24,6 @@ export class GameContextSnapshot {
     this.settleVersion = context.settleVersion;
     this.status = context.status;
     this.allowExit = context.allowExit;
-    this.players = context.players.map(p => new PlayerShapshot(p));
-    this.servers = context.servers.map(s => new ServerShapshot(s));
+    this.nodes = context.nodes.map((n: INode) => new NodeSnapshot(n));
   }
 }
diff --git a/js/sdk-core/src/game-context.ts b/js/sdk-core/src/game-context.ts
index 7ac6adea..c337069b 100644
--- a/js/sdk-core/src/game-context.ts
+++ b/js/sdk-core/src/game-context.ts
@@ -1,5 +1,6 @@
 import { RandomState, RandomSpec } from './random-state';
 import { DecisionState } from './decision-state';
+import { Checkpoint } from './checkpoint';
 import {
   ActionTimeout,
   Answer,
@@ -13,9 +14,12 @@ import {
   Shutdown,
   WaitingTimeout,
 } from './events';
-import { Effect, Settle, SettleAdd, SettleEject, SettleSub, Transfer } from './effect';
-import { GameAccount, PlayerJoin, ServerJoin } from './accounts';
+import { GamePlayer, InitAccount } from './init-account';
+import { Effect, EmitBridgeEvent, SubGame, Settle, Transfer, SettleAdd, SettleSub, SettleEject } from './effect';
+import { EntryType, GameAccount } from './accounts';
 import { Ciphertext, Digest, Id } from './types';
+import { clone } from './utils';
+import rfdc from 'rfdc';
 
 const OPERATION_TIMEOUT = 15_000n;
 
@@ -27,19 +31,15 @@ export type NodeStatus =
   | { kind: 'ready' }
   | { kind: 'disconnected' };
 
-export type GameStatus = 'uninit' | 'running' | 'closed';
+export type ClientMode = 'player' | 'transactor' | 'validator';
 
-export interface IPlayer {
-  addr: string;
-  position: number;
-  balance: bigint;
-  status: NodeStatus;
-}
+export type GameStatus = 'idle' | 'running' | 'closed';
 
-export interface IServer {
+export interface INode {
   addr: string;
+  id: bigint;
+  mode: ClientMode;
   status: NodeStatus;
-  endpoint: string;
 }
 
 export interface DispatchEvent {
@@ -47,97 +47,169 @@ export interface DispatchEvent {
   event: GameEvent;
 }
 
+export interface IdAddrPair {
+  id: bigint;
+  addr: string;
+}
+
+export type EventEffects = {
+  settles: Settle[];
+  transfers: Transfer[];
+  checkpoint: Uint8Array | undefined;
+  launchSubGames: SubGame[];
+  bridgeEvents: EmitBridgeEvent[];
+  startGame: boolean;
+}
+
 export class GameContext {
   gameAddr: string;
+  gameId: number;
   accessVersion: bigint;
   settleVersion: bigint;
-  transactorAddr: string;
   status: GameStatus;
-  players: IPlayer[];
-  servers: IServer[];
+  nodes: INode[];
   dispatch: DispatchEvent | undefined;
   handlerState: Uint8Array;
   timestamp: bigint;
   allowExit: boolean;
   randomStates: RandomState[];
   decisionStates: DecisionState[];
-  settles: Settle[] | undefined;
-  transfers: Transfer[] | undefined;
-  checkpoint: Uint8Array | undefined;
-  checkpointAccessVersion: bigint;
-
-  constructor(context: GameContext);
-  constructor(gameAccount: GameAccount);
-  constructor(gameAccountOrContext: GameAccount | GameContext) {
-    if (gameAccountOrContext instanceof GameContext) {
-      const context = gameAccountOrContext;
-      this.gameAddr = context.gameAddr;
-      this.accessVersion = context.accessVersion;
-      this.settleVersion = context.settleVersion;
-      this.transactorAddr = context.transactorAddr;
-      this.status = context.status;
-      this.players = context.players.map(p => Object.assign({}, p));
-      this.servers = context.servers.map(s => Object.assign({}, s));
-      this.dispatch = context.dispatch;
-      this.handlerState = new Uint8Array(context.handlerState);
-      this.timestamp = context.timestamp;
-      this.allowExit = context.allowExit;
-      this.randomStates = context.randomStates;
-      this.decisionStates = context.decisionStates;
-      this.settles = context.settles;
-      this.transfers = context.transfers;
-      this.checkpoint = undefined;
-      this.checkpointAccessVersion = context.checkpointAccessVersion;
-    } else {
-      const gameAccount = gameAccountOrContext;
+  checkpoint: Checkpoint;
+  subGames: SubGame[];
+  initData: Uint8Array;
+  maxPlayers: number;
+  players: GamePlayer[];
+  entryType: EntryType;
+
+  constructor(gameAccount: GameAccount, checkpoint: Checkpoint) {
+      if (checkpoint === undefined) {
+        throw new Error('Missing checkpoint');
+      }
+      console.log('Build game context with checkpoint:', clone(checkpoint));
+      const checkpointAccessVersion = gameAccount.checkpointOnChain?.accessVersion || 0;
       const transactorAddr = gameAccount.transactorAddr;
       if (transactorAddr === undefined) {
         throw new Error('Game not served');
       }
-      const players: IPlayer[] = gameAccount.players.map(p => ({
-        addr: p.addr,
-        balance: p.balance,
-        position: p.position,
-        status: {
-          kind: 'pending',
-          accessVersion: p.accessVersion,
-        },
-      }));
-      const servers: IServer[] = gameAccount.servers.map(s => ({
+      let nodes: INode[] = [];
+      gameAccount.servers.forEach(s => nodes.push({
         addr: s.addr,
-        endpoint: s.endpoint,
-        status: {
-          kind: 'pending',
-          accessVersion: s.accessVersion,
-        },
+        id: s.accessVersion,
+        mode: s.addr === transactorAddr ? 'transactor' : 'validator',
+        status: s.addr === gameAccount.transactorAddr
+          ? { kind: 'ready' }
+          : {
+            kind: 'pending',
+            accessVersion: s.accessVersion,
+          },
       }));
+      gameAccount.players.forEach(p => nodes.push({
+        addr: p.addr,
+        id: p.accessVersion,
+        mode: 'player',
+        status: p.addr === gameAccount.transactorAddr
+          ? { kind: 'ready' }
+          : {
+            kind: 'pending',
+            accessVersion: p.accessVersion,
+          },
+      }))
+
+      const players = gameAccount.players
+        .filter(p => p.accessVersion <= checkpointAccessVersion)
+        .map(p => new GamePlayer({
+          balance: p.balance,
+          id: p.accessVersion,
+          position: p.position
+        }))
 
       this.gameAddr = gameAccount.addr;
-      this.transactorAddr = transactorAddr;
+      this.gameId = 0;
       this.accessVersion = gameAccount.accessVersion;
       this.settleVersion = gameAccount.settleVersion;
-      this.status = 'uninit';
+      this.status = 'idle';
       this.dispatch = undefined;
-      this.players = players;
-      this.servers = servers;
+      this.nodes = nodes;
       this.timestamp = 0n;
       this.allowExit = false;
       this.randomStates = [];
       this.decisionStates = [];
-      this.settles = undefined;
-      this.transfers = undefined;
       this.handlerState = Uint8Array.of();
-      this.checkpoint = undefined;
-      this.checkpointAccessVersion = gameAccount.checkpointAccessVersion;
+      this.checkpoint = checkpoint;
+      this.subGames = [];
+      this.initData = gameAccount.data;
+      this.maxPlayers = gameAccount.maxPlayers;
+      this.players = players;
+      this.entryType = gameAccount.entryType;
     }
+
+  subContext(subGame: SubGame): GameContext {
+    const c = rfdc({ proto: true })(this);
+    Object.setPrototypeOf(c, GameContext.prototype);
+    c.accessVersion = c.accessVersion;
+    c.settleVersion = c.settleVersion;
+    c.gameAddr = c.gameAddr + subGame.gameId;
+    c.gameId = subGame.gameId;
+    c.dispatch = undefined;
+    c.timestamp = 0n;
+    c.allowExit = false;
+    c.randomStates = [];
+    c.decisionStates = [];
+    c.handlerState = Uint8Array.of();
+    c.checkpoint = this.checkpoint.clone();
+    c.subGames = [];
+    c.initData = subGame.initAccount.data;
+    c.maxPlayers = subGame.initAccount.maxPlayers;
+    c.entryType = subGame.initAccount.entryType;
+    c.players = subGame.initAccount.players.map(p => new GamePlayer(p));
+    return c;
+  }
+
+  checkpointVersion(): bigint {
+    return this.checkpoint.getVersion(this.gameId)
+  }
+
+  initAccount(): InitAccount {
+    const checkpoint = this.checkpoint.getData(this.gameId);
+    return new InitAccount({
+      maxPlayers: this.maxPlayers,
+      players: this.players.map(p => new GamePlayer(p)),
+      entryType: this.entryType,
+      data: this.initData,
+      checkpoint,
+    });
   }
 
-  getServerByAddress(addr: string): IServer | undefined {
-    return this.servers.find(s => s.addr === addr);
+  // get checkpointStateSha(): string {
+  //   return this.checkpoint.getSha(this.gameId) || '';
+  // }
+
+  idToAddrUnchecked(id: bigint): string | undefined {
+    return this.nodes.find(x => x.id === id)?.addr;
+  }
+
+  idToAddr(id: bigint): string {
+    let found = this.idToAddrUnchecked(id);
+    if (found === undefined) {
+      throw new Error(`Cannot map id to address: ${id.toString()}`);
+    }
+    return found;
   }
 
-  getPlayerByAddress(addr: string): IPlayer | undefined {
-    return this.players.find(p => p.addr === addr);
+  addrToIdUnchecked(addr: string): bigint | undefined {
+    return this.nodes.find(x => x.addr === addr)?.id;
+  }
+
+  addrToId(addr: string): bigint {
+    let found = this.addrToIdUnchecked(addr);
+    if (found === undefined) {
+      throw new Error(`Cannot map address to id: ${addr}`);
+    }
+    return found;
+  }
+
+  getNodeByAddress(addr: string): INode | undefined {
+    return this.nodes.find(n => n.addr === addr);
   }
 
   dispatchEvent(event: GameEvent, timeout: bigint) {
@@ -158,9 +230,9 @@ export class GameContext {
     };
   }
 
-  actionTimeout(playerAddr: string, timeout: bigint) {
+  actionTimeout(playerId: bigint, timeout: bigint) {
     this.dispatch = {
-      event: new ActionTimeout({ playerAddr }),
+      event: new ActionTimeout({ playerId }),
       timeout: this.timestamp + timeout,
     };
   }
@@ -234,43 +306,22 @@ export class GameContext {
     return this.randomStates.every(st => st.status.kind === 'ready');
   }
 
-  setPlayerStatus(addr: string, status: NodeStatus) {
-    let p = this.players.find(p => p.addr === addr);
-    if (p === undefined) {
-      throw new Error('Invalid player address');
-    }
-    p.status = status;
-  }
-
-  addPlayer(player: PlayerJoin) {
-    const exist = this.players.find(p => p.addr === player.addr || p.position === player.position);
-    if (exist === undefined) {
-      this.players.push({
-        addr: player.addr,
-        balance: player.balance,
-        status: { kind: 'ready' },
-        position: player.position,
-      });
-    } else {
-      if (exist.position === player.position) {
-        throw new Error('Position occupied');
-      } else {
-        throw new Error('Player already joined');
-      }
+  setNodeStatus(addr: string, status: NodeStatus) {
+    let n = this.nodes.find(n => n.addr === addr);
+    if (n === undefined) {
+      throw new Error('Invalid node address');
     }
+    n.status = status;
   }
 
-  addServer(server: ServerJoin) {
-    const exist = this.players.find(s => s.addr === server.addr);
-    if (exist === undefined) {
-      this.servers.push({
-        addr: server.addr,
-        status: { kind: 'ready' },
-        endpoint: server.endpoint,
-      });
-    } else {
-      throw new Error('Server already joined');
-    }
+  addNode(nodeAddr: string, accessVersion: bigint, mode: ClientMode) {
+    this.nodes = this.nodes.filter(n => n.addr !== nodeAddr);
+    this.nodes.push({
+      addr: nodeAddr,
+      id: accessVersion,
+      mode,
+      status: { kind: 'pending', accessVersion }
+    });
   }
 
   setAccessVersion(accessVersion: bigint) {
@@ -281,21 +332,9 @@ export class GameContext {
     this.allowExit = allowExit;
   }
 
-  removePlayer(addr: string) {
-    if (this.allowExit) {
-      const origLen = this.players.length;
-      this.players = this.players.filter(p => p.addr !== addr);
-      if (this.players.length === origLen) {
-        throw new Error('Player not in game');
-      }
-    } else {
-      throw new Error("Can't leave");
-    }
-  }
-
   initRandomState(spec: RandomSpec): Id {
     const randomId = this.randomStates.length + 1;
-    const owners = this.servers.filter(s => s.status.kind === 'ready').map(s => s.addr);
+    const owners = this.nodes.filter(n => n.status.kind === 'ready' && n.mode !== 'player').map(n => n.addr);
     const randomState = new RandomState(randomId, spec, owners);
     this.randomStates.push(randomState);
     return randomId;
@@ -333,70 +372,22 @@ export class GameContext {
       this.dispatchEventInstantly(new RandomnessReady({ randomId }));
     } else if (statusKind === 'locking' || statusKind === 'masking') {
       const addr = st.status.addr;
+      const id = this.addrToId(addr);
       if (noDispatch) {
-        this.dispatchEvent(new OperationTimeout({ addrs: [addr] }), OPERATION_TIMEOUT);
+        this.dispatchEvent(new OperationTimeout({ ids: [id] }), OPERATION_TIMEOUT);
       }
     } else if (statusKind === 'waiting-secrets') {
       if (noDispatch) {
-        const addrs = st.listOperatingAddrs();
-        this.dispatchEvent(new OperationTimeout({ addrs }), OPERATION_TIMEOUT);
+        const ids = st.listOperatingAddrs().map(x => this.addrToId(x));
+        this.dispatchEvent(new OperationTimeout({ ids }), OPERATION_TIMEOUT);
       }
     }
   }
 
-  settle(settles: Settle[]) {
-    this.settles = settles;
-  }
-
-  transfer(transfers: Transfer[]) {
-    this.transfers = transfers;
-  }
-
   bumpSettleVersion() {
     this.settleVersion += 1n;
   }
 
-  /*
-  This function refers to the backend function `take_settles_and_transfers`.
-  Here, we don't have to deal with transfers before we introducing settlement validation.
-   */
-  applyAndTakeSettles(): Settle[] | undefined {
-    if (this.settles === undefined) {
-      return undefined;
-    }
-    let settles = this.settles;
-    this.settles = undefined;
-    settles = settles.sort((s1, s2) => s1.compare(s2));
-    for (const s of settles) {
-      if (s.op instanceof SettleAdd) {
-        let p = this.getPlayerByAddress(s.addr);
-        if (p === undefined) {
-          throw new Error('Invalid settle player address');
-        }
-        p.balance += s.op.amount;
-      } else if (s.op instanceof SettleSub) {
-        let p = this.getPlayerByAddress(s.addr);
-        if (p === undefined) {
-          throw new Error('Invalid settle player address');
-        }
-        p.balance -= s.op.amount;
-      } else if (s.op instanceof SettleEject) {
-        this.players = this.players.filter(p => p.addr !== s.addr);
-      }
-    }
-
-    this.bumpSettleVersion();
-    return settles;
-  }
-
-  addSettle(settle: Settle) {
-    if (this.settles === undefined) {
-      this.settles = [settle];
-    } else {
-      this.settles.push(settle);
-    }
-  }
-
   addRevealedRandom(randomId: Id, revealed: Map<number, string>) {
     const st = this.getRandomState(randomId);
     st.addRevealed(revealed);
@@ -424,13 +415,13 @@ export class GameContext {
     return st.revealed;
   }
 
-  applyEffect(effect: Effect) {
+  async applyEffect(effect: Effect): Promise<EventEffects> {
     if (effect.startGame) {
       this.startGame();
     } else if (effect.stopGame) {
       this.shutdownGame();
     } else if (effect.actionTimeout !== undefined) {
-      this.actionTimeout(effect.actionTimeout.playerAddr, effect.actionTimeout.timeout);
+      this.actionTimeout(effect.actionTimeout.playerId, effect.actionTimeout.timeout);
     } else if (effect.waitTimeout !== undefined) {
       this.waitTimeout(effect.waitTimeout);
     } else if (effect.cancelDispatch) {
@@ -438,7 +429,8 @@ export class GameContext {
     }
     this.setAllowExit(effect.allowExit);
     for (const assign of effect.assigns) {
-      this.assign(assign.randomId, assign.playerAddr, assign.indexes);
+      const addr = this.idToAddr(assign.playerId);
+      this.assign(assign.randomId, addr, assign.indexes);
     }
     for (const reveal of effect.reveals) {
       this.reveal(reveal.randomId, reveal.indexes);
@@ -449,56 +441,109 @@ export class GameContext {
     for (const spec of effect.initRandomStates) {
       this.initRandomState(spec);
     }
-    if (effect.isCheckpoint) {
-      this.settle(effect.settles);
-      this.transfer(effect.transfers);
-      this.checkpoint = effect.checkpoint;
-    }
+
+    let settles: Settle[] = [];
+
     if (effect.handlerState !== undefined) {
       this.handlerState = effect.handlerState;
+      if (effect.isCheckpoint) {
+        this.randomStates = [];
+        this.decisionStates = [];
+        this.bumpSettleVersion();
+        this.checkpoint.setData(this.gameId, effect.handlerState);
+        this.checkpoint.setAccessVersion(this.accessVersion);
+
+        // Reset random states
+        this.randomStates = [];
+        this.decisionStates = [];
+
+        // Sort settles and track player states
+        settles.push(...effect.settles);
+        settles = effect.settles;
+        settles = settles.sort((s1, s2) => s1.compare(s2));
+        for (let s of settles) {
+          if (s.op instanceof SettleAdd) {
+            this.playerAddBalance(s.id, s.op.amount);
+          } else if (s.op instanceof SettleSub) {
+            this.playerSubBalance(s.id, s.op.amount);
+          } else if (s.op instanceof SettleEject) {
+            this.removePlayer(s.id);
+          }
+        }
+      }
+    }
+
+    for (const subGame of effect.launchSubGames) {
+      this.addSubGame(subGame);
     }
+
+    return {
+      checkpoint: effect.isCheckpoint ? effect.handlerState : undefined,
+      settles,
+      transfers: effect.transfers,
+      startGame: effect.startGame,
+      launchSubGames: effect.launchSubGames,
+      bridgeEvents: effect.bridgeEvents,
+    };
   }
 
   setNodeReady(accessVersion: bigint) {
-    for (const s of this.servers) {
-      if (s.status.kind === 'pending') {
-        if (s.status.accessVersion < accessVersion) {
-          s.status = { kind: 'ready' };
-        }
-      }
-    }
-    for (const p of this.players) {
-      if (p.status.kind === 'pending') {
-        if (p.status.accessVersion < accessVersion) {
-          p.status = { kind: 'ready' };
+    for (const n of this.nodes) {
+      if (n.status.kind === 'pending') {
+        if (n.status.accessVersion <= accessVersion) {
+          console.debug(`Set node ${n.addr} status to ready`);
+          n.status = { kind: 'ready' };
         }
       }
     }
   }
 
   applyCheckpoint(accessVersion: bigint, settleVersion: bigint) {
+    console.log(`Apply checkpoint, accessVersion: ${accessVersion}`)
     if (this.settleVersion !== settleVersion) {
       throw new Error(`Invalid checkpoint, local settle version: ${this.settleVersion}, remote settle version: ${settleVersion}`);
     }
-    this.players = this.players.filter(p => {
-      if (p.status.kind === 'pending') {
-        return p.status.accessVersion <= accessVersion;
-      } else {
-        return true;
-      }
-    });
-    this.servers = this.servers.filter(s => {
-      if (s.status.kind === 'pending') {
-        return s.status.accessVersion <= accessVersion || s.addr === this.transactorAddr;
-      } else {
-        return true;
-      }
-    });
     this.accessVersion = accessVersion;
   }
 
-  prepareForNextEvent(timestamp: bigint) {
+  setTimestamp(timestamp: bigint) {
     this.timestamp = timestamp;
-    this.checkpoint = undefined;
+  }
+
+  findSubGame(gameId: number): SubGame | undefined {
+    return this.subGames.find(g => g.gameId === Number(gameId));
+  }
+
+  addSubGame(subGame: SubGame) {
+    const found = this.subGames.find(s => s.gameId === subGame.gameId);
+    if (found === undefined) {
+      this.subGames.push(subGame);
+    } else {
+      found.initAccount = subGame.initAccount;
+    }
+  }
+
+  addPlayer(player: GamePlayer) {
+    this.players.push(player);
+  }
+
+  removePlayer(playerId: bigint) {
+    this.players = this.players.filter(p => p.id !== playerId);
+  }
+
+  playerAddBalance(playerId: bigint, amount: bigint) {
+    let p = this.players.find(p => p.id === playerId);
+    if (p === undefined) {
+      throw new Error(`Player not in game: ${playerId}`)
+    }
+    p.balance = p.balance + amount;
+  }
+
+  playerSubBalance(playerId: bigint, amount: bigint) {
+    let p = this.players.find(p => p.id === playerId);
+    if (p === undefined) {
+      throw new Error(`Player not in game: ${playerId}`)
+    }
+    p.balance = p.balance - amount;
   }
 }
diff --git a/js/sdk-core/src/handler.ts b/js/sdk-core/src/handler.ts
index 619e94ec..4f382e25 100644
--- a/js/sdk-core/src/handler.ts
+++ b/js/sdk-core/src/handler.ts
@@ -1,85 +1,17 @@
-import { array, deserialize, field, serialize, struct } from '@race-foundation/borsh';
-import { GameAccount, GameBundle, PlayerJoin, ServerJoin } from './accounts';
-import { AnswerDecision, GameEvent, GameStart, Leave, Mask, Lock, SecretsReady, ShareSecrets, Sync } from './events';
-import { GameContext } from './game-context';
+import { deserialize, serialize } from '@race-foundation/borsh';
+import { GameBundle } from './accounts';
+import { AnswerDecision, GameEvent, GameStart, Leave, Mask, Lock, SecretsReady, ShareSecrets, Join, Bridge } from './events';
+import { EventEffects, GameContext } from './game-context';
 import { IEncryptor } from './encryptor';
 import { Effect } from './effect';
 import { Client } from './client';
 import { DecryptionCache } from './decryption-cache';
-
-/**
- * A subset of GameAccount, used in handler initialization.
- */
-export interface IInitAccount {
-  addr: string;
-  players: PlayerJoin[];
-  servers: ServerJoin[];
-  data: Uint8Array;
-  accessVersion: bigint;
-  settleVersion: bigint;
-  maxPlayers: number;
-  checkpoint: Uint8Array;
-}
-
-export class InitAccount {
-  @field('string')
-  readonly addr: string;
-  @field(array(struct(PlayerJoin)))
-  readonly players: PlayerJoin[];
-  @field(array(struct(ServerJoin)))
-  readonly servers: ServerJoin[];
-  @field('u8-array')
-  readonly data: Uint8Array;
-  @field('u64')
-  readonly accessVersion: bigint;
-  @field('u64')
-  readonly settleVersion: bigint;
-  @field('u16')
-  readonly maxPlayers: number;
-  @field('u8-array')
-  readonly checkpoint: Uint8Array;
-
-  constructor(fields: IInitAccount) {
-    this.addr = fields.addr;
-    this.accessVersion = fields.accessVersion;
-    this.settleVersion = fields.settleVersion;
-    this.data = fields.data;
-    this.players = fields.players;
-    this.servers = fields.servers;
-    this.maxPlayers = fields.maxPlayers;
-    this.checkpoint = fields.checkpoint;
-  }
-  static createFromGameAccount(
-    gameAccount: GameAccount,
-    transactorAccessVersion: bigint,
-    transactorSettleVersion: bigint
-  ): InitAccount {
-    let { addr, players, servers, data, checkpointAccessVersion, transactorAddr } = gameAccount;
-    players = players.filter(p => p.accessVersion <= checkpointAccessVersion);
-    servers = servers.filter(s => s.accessVersion <= checkpointAccessVersion || s.addr === transactorAddr);
-    return new InitAccount({
-      addr,
-      data,
-      players,
-      servers,
-      accessVersion: transactorAccessVersion,
-      settleVersion: transactorSettleVersion,
-      maxPlayers: gameAccount.maxPlayers,
-      checkpoint: gameAccount.checkpoint,
-    });
-  }
-  serialize(): Uint8Array {
-    return serialize(InitAccount);
-  }
-  static deserialize(data: Uint8Array) {
-    return deserialize(InitAccount, data);
-  }
-}
+import { InitAccount } from './init-account';
 
 export interface IHandler {
-  handleEvent(context: GameContext, event: GameEvent): Promise<void>;
+  handleEvent(context: GameContext, event: GameEvent): Promise<EventEffects>;
 
-  initState(context: GameContext, initAccount: InitAccount): Promise<void>;
+  initState(context: GameContext, initAccount: InitAccount): Promise<EventEffects>;
 }
 
 export class Handler implements IHandler {
@@ -115,27 +47,28 @@ export class Handler implements IHandler {
     return new Handler(initiatedSource.instance, encryptor, client, decryptionCache);
   }
 
-  async handleEvent(context: GameContext, event: GameEvent) {
+  async handleEvent(context: GameContext, event: GameEvent): Promise<EventEffects> {
     await this.generalPreHandleEvent(context, event, this.#encryptor);
-    await this.customHandleEvent(context, event);
-    await this.generalPostHandleEvent(context, event);
-    context.applyAndTakeSettles();
+    return await this.customHandleEvent(context, event);
   }
 
-  async initState(context: GameContext, initAccount: InitAccount) {
+  async initState(context: GameContext): Promise<EventEffects> {
+    const initAccount = context.initAccount();
+    console.log('InitState with:', initAccount);
+    context.setTimestamp(0n); // Use 0 timestamp for initState
     await this.generalPreInitState(context, initAccount);
-    await this.customInitState(context, initAccount);
-    await this.generalPostInitState(context, initAccount);
+    return await this.customInitState(context, initAccount);
   }
 
-  async generalPreInitState(_context: GameContext, _initAccount: InitAccount) { }
-
-  async generalPostInitState(_context: GameContext, _initAccount: InitAccount) { }
+  async generalPreInitState(context: GameContext, _initAccount: InitAccount) {
+    context.dispatch = undefined;
+  }
 
   async generalPreHandleEvent(context: GameContext, event: GameEvent, encryptor: IEncryptor) {
     if (event instanceof ShareSecrets) {
       const { sender, shares } = event;
-      context.addSharedSecrets(sender, shares);
+      const addr = context.idToAddr(sender);
+      context.addSharedSecrets(addr, shares);
       let randomIds: number[] = [];
       for (let randomState of context.randomStates) {
         if (randomState.status.kind === 'shared') {
@@ -143,43 +76,31 @@ export class Handler implements IHandler {
           randomState.status = { kind: 'ready' };
         }
       }
-
       if (randomIds.length > 0) {
         context.dispatchEventInstantly(new SecretsReady({ randomIds }));
       }
     } else if (event instanceof AnswerDecision) {
       const { decisionId, ciphertext, sender, digest } = event;
-      context.answerDecision(decisionId, sender, ciphertext, digest);
+      const addr = context.idToAddr(sender);
+      context.answerDecision(decisionId, addr, ciphertext, digest);
     } else if (event instanceof Mask) {
       const { sender, randomId, ciphertexts } = event;
-      context.randomizeAndMask(sender, randomId, ciphertexts);
+      const addr = context.idToAddr(sender);
+      context.randomizeAndMask(addr, randomId, ciphertexts);
     } else if (event instanceof Lock) {
       const { sender, randomId, ciphertextsAndDigests } = event;
-      context.lock(sender, randomId, ciphertextsAndDigests);
-    } else if (event instanceof Sync) {
-      const { accessVersion, newPlayers, newServers } = event;
-      if (accessVersion < context.accessVersion) {
-        throw new Error('Event ignored');
-      }
-      for (const p of newPlayers) {
-        context.addPlayer(p);
-      }
-      for (const s of newServers) {
-        context.addServer(s);
-      }
-      context.accessVersion = accessVersion;
+      const addr = context.idToAddr(sender);
+      context.lock(addr, randomId, ciphertextsAndDigests);
+    } else if (event instanceof Join) {
+      event.players.forEach(p => context.addPlayer(p));
     } else if (event instanceof Leave) {
-      const { playerAddr } = event;
-      const exist = context.players.find(p => p.addr === playerAddr);
-      if (exist === undefined) {
-        throw new Error('Invalid player address');
+      if (!context.allowExit) {
+        throw new Error('Leave is not allowed')
       }
     } else if (event instanceof GameStart) {
-      const { accessVersion } = event;
       context.status = 'running';
-      context.setNodeReady(accessVersion);
+      context.setNodeReady(context.accessVersion);
     } else if (event instanceof SecretsReady) {
-
       for (let randomId of event.randomIds) {
         let decryption = await this.#client.decrypt(context, randomId);
         this.#decryptionCache.add(randomId, decryption);
@@ -194,23 +115,20 @@ export class Handler implements IHandler {
         );
         context.addRevealedRandom(st.id, revealed);
       }
+    } else if (event instanceof Bridge) {
+      event.joinPlayers.forEach(p => context.addPlayer(p));
     }
   }
 
-  async generalPostHandleEvent(context: GameContext, event: GameEvent) {
-    if (context.checkpoint) {
-      context.randomStates = [];
-      context.decisionStates = [];
-    }
-  }
-
-  async customInitState(context: GameContext, initAccount: InitAccount) {
+  async customInitState(context: GameContext, initAccount: InitAccount): Promise<EventEffects> {
     const exports = this.#instance.exports;
     const mem = exports.memory as WebAssembly.Memory;
     mem.grow(4);
     let buf = new Uint8Array(mem.buffer);
 
-    const effect = Effect.fromContext(context);
+    const effect = Effect.fromContext(context, true);
+    console.log('Effect:', effect);
+
     const effectBytes = serialize(effect);
     const effectSize = effectBytes.length;
 
@@ -240,26 +158,24 @@ export class Handler implements IHandler {
       console.error(newEffect.error);
       throw newEffect.error;
     } else {
-      context.applyEffect(newEffect);
+      return await context.applyEffect(newEffect);
     }
   }
 
-  async customHandleEvent(context: GameContext, event: GameEvent) {
+  async customHandleEvent(context: GameContext, event: GameEvent): Promise<EventEffects> {
     const exports = this.#instance.exports;
     const mem = exports.memory as WebAssembly.Memory;
     let buf = new Uint8Array(mem.buffer);
 
-    const effect = Effect.fromContext(context);
-    // console.debug("Effect before ser: ", effect);
+    const effect = Effect.fromContext(context, false);
+
+    console.log('Effect:', effect);
     const effectBytes = serialize(effect);
     const effectSize = effectBytes.length;
 
     const eventBytes = serialize(event);
     const eventSize = eventBytes.length;
 
-    // console.debug("Event Bytes: [%s]", Array.of(eventBytes).toString());
-    // console.debug("Effect Bytes: [%s]", Array.of(effectBytes).toString());
-
     if (buf.length < 1 + eventSize + effectSize) {
       throw new Error(`WASM memory overflow, buffer length: ${buf.length}, required: ${1 + eventSize + effectSize}`);
     }
@@ -294,7 +210,7 @@ export class Handler implements IHandler {
     if (newEffect.error !== undefined) {
       throw newEffect.error;
     } else {
-      context.applyEffect(newEffect);
+      return await context.applyEffect(newEffect);
     }
   }
 }
diff --git a/js/sdk-core/src/index.ts b/js/sdk-core/src/index.ts
index 61540433..39b506ca 100644
--- a/js/sdk-core/src/index.ts
+++ b/js/sdk-core/src/index.ts
@@ -7,3 +7,8 @@ export * from './events';
 export * from './game-context-snapshot';
 export * from './connection';
 export * from './storage';
+export * from './sub-client';
+export * from './types';
+export * from './checkpoint';
+
+console.log('Race Protocol 24.04');
diff --git a/js/sdk-core/src/init-account.ts b/js/sdk-core/src/init-account.ts
new file mode 100644
index 00000000..7a71fe9a
--- /dev/null
+++ b/js/sdk-core/src/init-account.ts
@@ -0,0 +1,54 @@
+import { array, deserialize, enums, field, option, serialize, struct } from "@race-foundation/borsh";
+import { EntryType, GameAccount } from "./accounts";
+import { Fields } from "./types";
+
+export class GamePlayer {
+  @field('u64')
+  id!: bigint;
+  @field('u16')
+  position!: number;
+  @field('u64')
+  balance!: bigint;
+  constructor(fields: Fields<GamePlayer>) {
+    Object.assign(this, fields)
+  }
+}
+
+/**
+ * A subset of GameAccount, used in handler initialization.
+ */
+export interface IInitAccount {
+  maxPlayers: number;
+  entryType: EntryType;
+  players: GamePlayer[];
+  data: Uint8Array;
+  checkpoint: Uint8Array | undefined;
+}
+
+export class InitAccount {
+  @field('u16')
+  readonly maxPlayers: number;
+  @field(enums(EntryType))
+  readonly entryType: EntryType;
+  @field(array(struct(GamePlayer)))
+  readonly players: GamePlayer[];
+  @field('u8-array')
+  readonly data: Uint8Array;
+  @field(option('u8-array'))
+  readonly checkpoint: Uint8Array | undefined;
+
+  constructor(fields: IInitAccount) {
+    this.maxPlayers = fields.maxPlayers;
+    this.entryType = fields.entryType;
+    this.players = fields.players;
+    this.data = fields.data;
+    this.checkpoint = fields.checkpoint;
+  }
+
+  serialize(): Uint8Array {
+    return serialize(InitAccount);
+  }
+  static deserialize(data: Uint8Array) {
+    return deserialize(InitAccount, data);
+  }
+}
diff --git a/js/sdk-core/src/profile-cache.ts b/js/sdk-core/src/profile-cache.ts
deleted file mode 100644
index 68d12a41..00000000
--- a/js/sdk-core/src/profile-cache.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import { PlayerProfile } from './accounts';
-import { GameContextSnapshot } from './game-context-snapshot';
-import { ITransport } from './transport';
-
-export class ProfileCache {
-  transport: ITransport;
-  caches: Map<string, PlayerProfile>;
-
-  constructor(transport: ITransport) {
-    this.transport = transport;
-    this.caches = new Map();
-  }
-
-  async getProfile(playerAddr: string): Promise<PlayerProfile | undefined> {
-    let exist = this.caches.get(playerAddr);
-    if (exist !== undefined) {
-      return exist;
-    } else {
-      const p = await this.transport.getPlayerProfile(playerAddr);
-      if (p === undefined) {
-        console.warn('Failed to fetch the profile of %s', playerAddr);
-        return undefined;
-      } else {
-        this.caches.set(playerAddr, p);
-        return p;
-      }
-    }
-  }
-
-  async injectProfiles(context: GameContextSnapshot) {
-    for (let player of context.players) {
-      if (player.profile === undefined) {
-        const profile = await this.getProfile(player.addr);
-        player.profile = profile;
-      }
-    }
-  }
-}
diff --git a/js/sdk-core/src/profile-loader.ts b/js/sdk-core/src/profile-loader.ts
new file mode 100644
index 00000000..1773a881
--- /dev/null
+++ b/js/sdk-core/src/profile-loader.ts
@@ -0,0 +1,98 @@
+import { IStorage } from './storage';
+import { ITransport } from './transport';
+import { PlayerProfileWithPfp, ProfileCallbackFunction } from './types';
+
+type LoadingStatus = 'loading' | 'loaded' | 'failed';
+
+export class ProfileLoader {
+  transport: ITransport;
+  caches: Map<string, PlayerProfileWithPfp>;
+  loadingStatus: Map<string, LoadingStatus>;
+  storage?: IStorage;
+  shutdown: boolean;
+  onProfile: ProfileCallbackFunction;
+  addrToId: Map<string, bigint>;
+
+  constructor(transport: ITransport, storage: IStorage | undefined, onProfile: ProfileCallbackFunction) {
+    this.transport = transport;
+    this.storage = storage;
+    this.caches = new Map();
+    this.loadingStatus = new Map();
+    this.shutdown = false;
+    this.onProfile = onProfile;
+    this.addrToId = new Map();
+  }
+
+  async __loadProfile(playerAddr: string): Promise<PlayerProfileWithPfp | undefined> {
+    const profile = await this.transport.getPlayerProfile(playerAddr);
+    if (profile === undefined) {
+      return undefined;
+    } else {
+      let p;
+      if (profile.pfp !== undefined) {
+        let pfp = await this.transport.getNft(profile.pfp, this.storage);
+        p = { pfp, addr: profile.addr, nick: profile.nick };
+      } else {
+        p = { pfp: undefined, addr: profile.addr, nick: profile.nick };
+      }
+      console.debug(`Load profile, address = ${playerAddr}`, profile);
+      return p;
+    }
+  }
+
+  getProfile(playerAddr: string): PlayerProfileWithPfp | undefined {
+    return this.caches.get(playerAddr);
+  }
+
+  async start() {
+    while (true) {
+      if (this.shutdown) {
+        break;
+      }
+      for (const [addr, s] of this.loadingStatus) {
+        if (s === 'loading') {
+          const p = await this.__loadProfile(addr);
+          if (p === undefined) {
+            this.loadingStatus.set(addr, 'failed');
+          } else {
+            if (this.onProfile !== undefined) {
+              const id = this.addrToId.get(p.addr);
+              if (id === undefined) {
+                console.warn(`Cannot find the mapping from address = ${p.addr} to id, available mapping:`, this.addrToId);
+                throw new Error('Cannot find the mapping from address to id');
+              }
+              this.onProfile(id, p);
+            }
+            this.caches.set(addr, p);
+            this.loadingStatus.set(addr, 'loaded');
+          }
+        }
+      }
+      await new Promise(r => setTimeout(r, 1000));
+    }
+  }
+
+  load(id: bigint, addr: string) {
+    const status = this.loadingStatus.get(addr);
+    this.addrToId.set(addr, id);
+    if (status === undefined) {
+      console.debug(`Load profile: ${addr}, this is the first loading for this address`);
+      this.loadingStatus.set(addr, 'loading');
+    } else if (status === 'failed') {
+      console.debug(`Load profile: ${addr}, this is a reloading after a failure`);
+      this.loadingStatus.set(addr, 'loading');
+    } else if (status === 'loaded') {
+      console.debug(`Load profile: ${addr}, get the result from cache`);
+      const p = this.caches.get(addr);
+      if (p !== undefined) {
+        this.onProfile(id, p);
+      } else {
+        console.error(`Unexpected profile cache not found, address: ${addr}`);
+      }
+    }
+  }
+
+  stop() {
+    this.shutdown = true;
+  }
+}
diff --git a/js/sdk-core/src/sub-client.ts b/js/sdk-core/src/sub-client.ts
new file mode 100644
index 00000000..39488627
--- /dev/null
+++ b/js/sdk-core/src/sub-client.ts
@@ -0,0 +1,64 @@
+import { BaseClient } from './base-client';
+import { Client } from './client';
+import { IConnection, SubscribeEventParams } from './connection';
+import { DecryptionCache } from './decryption-cache';
+import { IEncryptor } from './encryptor';
+import { GameContext } from './game-context';
+import { Handler } from './handler';
+import { ITransport } from './transport';
+import { GameInfo, ConnectionStateCallbackFunction, EventCallbackFunction, MessageCallbackFunction, TxStateCallbackFunction, ErrorCallbackFunction } from './types';
+import { IWallet } from './wallet';
+import { Init } from './events';
+import { CheckpointOnChain } from './checkpoint';
+import { clone } from './utils';
+
+export type SubClientCtorOpts = {
+  gameAddr: string;
+  gameId: number;
+  handler: Handler;
+  wallet: IWallet;
+  client: Client;
+  transport: ITransport;
+  connection: IConnection;
+  gameContext: GameContext;
+  latestCheckpointOnChain: CheckpointOnChain | undefined;
+  onEvent: EventCallbackFunction;
+  onMessage: MessageCallbackFunction | undefined;
+  onTxState: TxStateCallbackFunction | undefined;
+  onConnectionState: ConnectionStateCallbackFunction | undefined;
+  onError: ErrorCallbackFunction | undefined;
+  encryptor: IEncryptor;
+  info: GameInfo;
+  decryptionCache: DecryptionCache;
+}
+
+export class SubClient extends BaseClient {
+  constructor(opts: SubClientCtorOpts) {
+    super({
+      onLoadProfile: (_id: bigint, _addr: string) => {},
+      logPrefix: `SubGame#${opts.gameId}|`,
+      ...opts
+    })
+  }
+
+  /**
+   * Connect to the transactor and retrieve the event stream.
+   */
+  async attachGame() {
+    console.group(`${this.__logPrefix}Attach to game`);
+    let sub;
+    try {
+      console.log('Checkpoint:', clone(this.__gameContext.checkpoint));
+      await this.__attachGameWithRetry();
+      sub = this.__connection.subscribeEvents();
+      const settleVersion = this.__gameContext.checkpointVersion();
+      await this.__connection.connect(new SubscribeEventParams({ settleVersion }));
+    } catch (e) {
+      console.error('Attaching game failed', e);
+      throw e;
+    } finally {
+      console.groupEnd();
+    }
+    await this.__processSubscription(sub);
+  }
+}
diff --git a/js/sdk-core/src/transport.ts b/js/sdk-core/src/transport.ts
index 94978fee..052e4a14 100644
--- a/js/sdk-core/src/transport.ts
+++ b/js/sdk-core/src/transport.ts
@@ -11,6 +11,7 @@ import {
   RegistrationWithGames,
   RecipientAccount,
   EntryType,
+  ITokenWithBalance,
 } from './accounts';
 import { IStorage } from './storage';
 
@@ -35,6 +36,8 @@ export type CreateGameAccountParams = {
   tokenAddr: string;
   maxPlayers: number;
   entryType: EntryType;
+  recipientAddr: string;
+  registrationAddr: string;
   data: Uint8Array;
 };
 
@@ -45,10 +48,9 @@ export type CloseGameAccountParams = {
 export type JoinParams = {
   gameAddr: string;
   amount: bigint;
-  accessVersion: bigint;
   position: number;
   verifyKey: string;
-  createProfile?: boolean;
+  createProfileIfNeeded?: boolean;
 };
 
 export type DepositParams = {
@@ -136,11 +138,11 @@ export interface ITransport {
 
   getNft(addr: string, storage?: IStorage): Promise<INft | undefined>;
 
-  listTokens(storage?: IStorage): Promise<IToken[]>;
+  listTokens(tokenAddrs: string[], storage?: IStorage): Promise<IToken[]>;
 
-  listNfts(walletAddr: string, storage?: IStorage): Promise<INft[]>;
+  listTokensWithBalance(walletAddr: string, tokenAddrs: string[], storage?: IStorage): Promise<ITokenWithBalance[]>;
 
-  fetchBalances(walletAddr: string, tokenAddrs: string[]): Promise<Map<string, bigint>>;
+  listNfts(walletAddr: string, storage?: IStorage): Promise<INft[]>;
 
   recipientClaim(wallet: IWallet, params: RecipientClaimParams): Promise<TransactionResult<void>>;
 }
diff --git a/js/sdk-core/src/tx-state.ts b/js/sdk-core/src/tx-state.ts
index 46dcf6f3..893a6dbb 100644
--- a/js/sdk-core/src/tx-state.ts
+++ b/js/sdk-core/src/tx-state.ts
@@ -1,13 +1,35 @@
-import { field, array, enums, option, variant, struct } from '@race-foundation/borsh';
-import { PlayerJoin } from './accounts';
+import { field, array, variant, struct, option } from '@race-foundation/borsh';
 
-// type StateField<T> = Omit<Fields<T>, 'kind'>;
 export abstract class TxState {}
 
+export type TxStateKind =
+  | 'PlayerConfirming'
+  | 'PlayerConfirmingFailed'
+  | 'SettleSucceed';
+
+export interface ITxStateKind {
+  kind(): TxStateKind;
+}
+
+export class ConfirmingPlayer {
+  @field('u64')
+  id!: bigint;
+  @field('string')
+  addr!: string;
+  @field('u16')
+  position!: number;
+  @field('u64')
+  balance!: bigint;
+
+  constructor(fields: any) {
+    Object.assign(this, fields);
+  }
+}
+
 @variant(0)
-export class PlayerConfirming extends TxState {
-  @field(array(struct(PlayerJoin)))
-  confirmPlayers!: PlayerJoin[];
+export class PlayerConfirming extends TxState implements ITxStateKind {
+  @field(array(struct(ConfirmingPlayer)))
+  confirmPlayers!: ConfirmingPlayer[];
   @field('u64')
   accessVersion!: bigint;
 
@@ -15,10 +37,13 @@ export class PlayerConfirming extends TxState {
     super();
     Object.assign(this, fields);
   }
+  kind(): TxStateKind {
+    return 'PlayerConfirming';
+  }
 }
 
 @variant(1)
-export class PlayerConfirmingFailed extends TxState {
+export class PlayerConfirmingFailed extends TxState implements ITxStateKind {
   @field('u64')
   accessVersion!: bigint;
 
@@ -26,4 +51,23 @@ export class PlayerConfirmingFailed extends TxState {
     super();
     Object.assign(this, fields);
   }
+  kind(): TxStateKind {
+    return 'PlayerConfirmingFailed';
+  }
+}
+
+@variant(2)
+export class SettleSucceed extends TxState implements ITxStateKind {
+  @field('u64')
+  settleVersion!: bigint;
+  @field(option('string'))
+  signature: string | undefined;
+
+  constructor(fields: any) {
+    super();
+    Object.assign(this, fields);
+  }
+  kind(): TxStateKind {
+    return 'SettleSucceed';
+  }
 }
diff --git a/js/sdk-core/src/types.ts b/js/sdk-core/src/types.ts
index 7e9a6a30..cbc078e5 100644
--- a/js/sdk-core/src/types.ts
+++ b/js/sdk-core/src/types.ts
@@ -1,5 +1,58 @@
+import { EntryType, INft, IToken } from "./accounts";
+import { Message } from "./broadcast-frames";
+import { ConnectionState } from "./connection";
+import { GameEvent } from "./events";
+import { GameContextSnapshot } from "./game-context-snapshot";
+import { TxState } from "./tx-state";
+
 export type Id = number;
 export type Ciphertext = Uint8Array;
 export type Secret = Uint8Array;
 export type Digest = Uint8Array;
 export type Fields<T> = Pick<T, keyof T>;
+
+export type GameInfo = {
+  gameAddr: string;
+  title: string;
+  maxPlayers: number;
+  minDeposit?: bigint;
+  maxDeposit?: bigint;
+  entryType: EntryType,
+  token: IToken;
+  tokenAddr: string;
+  bundleAddr: string;
+  data: Uint8Array;
+  dataLen: number;
+};
+
+export type PlayerProfileWithPfp = {
+  pfp: INft | undefined,
+  addr: string,
+  nick: string,
+};
+
+export type EventCallbackFunction = (
+  context: GameContextSnapshot,
+  state: Uint8Array,
+  event: GameEvent | undefined,
+) => void;
+
+export type ErrorKind =
+  | 'event-state-sha-mismatch'
+  | 'checkpoint-state-sha-mismatch'
+  | 'onchain-data-not-found'
+  | 'attach-failed'
+  | 'handle-event-error'
+  | 'init-data-invalid'
+
+export type MessageCallbackFunction = (message: Message) => void;
+
+export type TxStateCallbackFunction = (txState: TxState) => void;
+
+export type ConnectionStateCallbackFunction = (connState: ConnectionState) => void;
+
+export type ProfileCallbackFunction = (id: bigint | undefined, profile: PlayerProfileWithPfp) => void;
+
+export type LoadProfileCallbackFunction = (id: bigint, addr: string) => void;
+
+export type ErrorCallbackFunction = (error: ErrorKind, arg: any) => void;
diff --git a/js/sdk-core/src/utils.ts b/js/sdk-core/src/utils.ts
index 952e9b0d..109dc30a 100644
--- a/js/sdk-core/src/utils.ts
+++ b/js/sdk-core/src/utils.ts
@@ -1,3 +1,7 @@
+import rfdc from 'rfdc';
+
+export const clone = rfdc();
+
 export function arrayBufferToBase64(buffer: ArrayBuffer): string {
   let binary = '';
   let bytes = new Uint8Array(buffer);
diff --git a/js/sdk-core/src/wallet.ts b/js/sdk-core/src/wallet.ts
index fb91f336..90234c9b 100644
--- a/js/sdk-core/src/wallet.ts
+++ b/js/sdk-core/src/wallet.ts
@@ -3,5 +3,5 @@ import { TransactionResult } from "./transport";
 export interface IWallet {
   isConnected: boolean;
   walletAddr: string;
-  sendTransaction(tx: any, conn: any): Promise<TransactionResult<void>>;
+  sendTransaction(tx: any, conn: any, config?: any): Promise<TransactionResult<void>>;
 }
diff --git a/js/sdk-core/tests/accounts.spec.ts b/js/sdk-core/tests/accounts.spec.ts
deleted file mode 100644
index d7e66e9c..00000000
--- a/js/sdk-core/tests/accounts.spec.ts
+++ /dev/null
@@ -1,185 +0,0 @@
-import { serialize, deserialize } from '@race-foundation/borsh';
-import { assert } from 'chai';
-import * as sut from '../src/accounts';
-
-describe('Test accounts with borsh serialization', () => {
-  it('ServerAccount', () => {
-    let x = new sut.ServerAccount({
-      addr: 'an addr',
-      endpoint: 'http://foo.bar',
-    });
-    let data = serialize(x);
-    assert.deepStrictEqual(
-      data,
-      Uint8Array.from([
-        7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111, 111, 46, 98,
-        97, 114,
-      ])
-    );
-    let x0 = deserialize(sut.ServerAccount, data);
-    assert.deepStrictEqual(x, x0);
-  });
-
-  it('PlayerProfile without pfp', () => {
-    let x = new sut.PlayerProfile({
-      addr: 'an addr',
-      nick: 'Alice',
-      pfp: undefined,
-    });
-    let data = serialize(x);
-    let x0 = deserialize(sut.PlayerProfile, data);
-    assert.deepStrictEqual(x, x0);
-  });
-
-  it('PlayerProfile with pfp', () => {
-    let x = new sut.PlayerProfile({
-      addr: 'an addr',
-      nick: 'Alice',
-      pfp: 'Awesome PFP',
-    });
-    let data = serialize(x);
-    assert.deepStrictEqual(
-      data,
-      Uint8Array.from([
-        7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 5, 0, 0, 0, 65, 108, 105, 99, 101, 1, 11, 0, 0, 0, 65, 119, 101,
-        115, 111, 109, 101, 32, 80, 70, 80,
-      ])
-    );
-    let x0 = deserialize(sut.PlayerProfile, data);
-    assert.deepStrictEqual(x, x0);
-  });
-
-  it('RegistrationAccount', () => {
-    let x = new sut.RegistrationAccount({
-      addr: 'an addr',
-      isPrivate: true,
-      size: 100,
-      owner: 'another addr',
-      games: [
-        new sut.GameRegistration({
-          title: 'Game A',
-          addr: 'addr 0',
-          regTime: BigInt(1000),
-          bundleAddr: 'bundle 0',
-        }),
-        new sut.GameRegistration({
-          title: 'Game B',
-          addr: 'addr 1',
-          regTime: BigInt(1001),
-          bundleAddr: 'bundle 1',
-        }),
-      ],
-    });
-    let data = serialize(x);
-    assert.deepStrictEqual(
-      data,
-      Uint8Array.from([
-        7, 0, 0, 0, 97, 110, 32, 97, 100, 100, 114, 1, 100, 0, 1, 12, 0, 0, 0, 97, 110, 111, 116, 104, 101, 114, 32, 97,
-        100, 100, 114, 2, 0, 0, 0, 6, 0, 0, 0, 71, 97, 109, 101, 32, 65, 6, 0, 0, 0, 97, 100, 100, 114, 32, 48, 232, 3,
-        0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 98, 117, 110, 100, 108, 101, 32, 48, 6, 0, 0, 0, 71, 97, 109, 101, 32, 66, 6, 0,
-        0, 0, 97, 100, 100, 114, 32, 49, 233, 3, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 98, 117, 110, 100, 108, 101, 32, 49,
-      ])
-    );
-    let x0 = deserialize(sut.RegistrationAccount, data);
-    assert.deepStrictEqual(x, x0);
-  });
-
-  it('GameBundle', () => {
-    let x = new sut.GameBundle({
-      uri: 'http://foo.bar',
-      name: 'Awesome Game',
-      data: Uint8Array.of(1, 2, 3, 4),
-    });
-    let data = serialize(x);
-    assert.deepStrictEqual(
-      data,
-      Uint8Array.from([
-        14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111, 111, 46, 98, 97, 114, 12, 0, 0, 0, 65, 119, 101, 115,
-        111, 109, 101, 32, 71, 97, 109, 101, 4, 0, 0, 0, 1, 2, 3, 4,
-      ])
-    );
-    let x0 = deserialize(sut.GameBundle, data);
-    assert.deepStrictEqual(x, x0);
-  });
-
-  it('GameAccount', () => {
-    let x = new sut.GameAccount({
-      addr: 'game addr',
-      title: 'awesome game title',
-      bundleAddr: 'bundle addr',
-      tokenAddr: 'token addr',
-      ownerAddr: 'owner addr',
-      settleVersion: BigInt(10),
-      accessVersion: BigInt(20),
-      players: [
-        new sut.PlayerJoin({
-          addr: 'player 0',
-          balance: BigInt(3),
-          position: 0,
-          accessVersion: BigInt(19),
-          verifyKey: 'VERIFY KEY',
-        }),
-        new sut.PlayerJoin({
-          addr: 'player 1',
-          balance: BigInt(6),
-          position: 1,
-          accessVersion: BigInt(21),
-          verifyKey: 'VERIFY KEY',
-        }),
-      ],
-      deposits: [
-        new sut.PlayerDeposit({
-          addr: 'player 0',
-          amount: BigInt(9),
-          settleVersion: BigInt(21),
-        }),
-        new sut.PlayerDeposit({
-          addr: 'player 1',
-          amount: BigInt(12),
-          settleVersion: BigInt(21),
-        }),
-      ],
-      servers: [
-        new sut.ServerJoin({
-          addr: 'server 0',
-          endpoint: 'http://foo.bar',
-          accessVersion: BigInt(17),
-          verifyKey: 'VERIFY KEY',
-        }),
-        new sut.ServerJoin({
-          addr: 'server 1',
-          endpoint: 'http://foo.bar',
-          accessVersion: BigInt(17),
-          verifyKey: 'VERIFY KEY',
-        }),
-      ],
-      transactorAddr: 'server 0',
-      votes: [
-        new sut.Vote({
-          voter: 'server 1',
-          votee: 'server 0',
-          voteType: sut.VoteType.ServerVoteTransactorDropOff,
-        }),
-      ],
-      unlockTime: undefined,
-      maxPlayers: 30,
-      dataLen: 10,
-      data: Uint8Array.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9),
-      entryType: new sut.EntryTypeCash({
-        minDeposit: BigInt(100),
-        maxDeposit: BigInt(250),
-      }),
-      recipientAddr: 'recipient',
-      checkpoint: Uint8Array.of(10, 11, 12),
-      checkpointAccessVersion: BigInt(20),
-    });
-    let data = serialize(x);
-
-    assert.deepStrictEqual(
-      data,
-      Uint8Array.from([9, 0, 0, 0, 103, 97, 109, 101, 32, 97, 100, 100, 114, 18, 0, 0, 0, 97, 119, 101, 115, 111, 109, 101, 32, 103, 97, 109, 101, 32, 116, 105, 116, 108, 101, 11, 0, 0, 0, 98, 117, 110, 100, 108, 101, 32, 97, 100, 100, 114, 10, 0, 0, 0, 116, 111, 107, 101, 110, 32, 97, 100, 100, 114, 10, 0, 0, 0, 111, 119, 110, 101, 114, 32, 97, 100, 100, 114, 10, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32, 48, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32, 49, 1, 0, 6, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 2, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32, 48, 9, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 112, 108, 97, 121, 101, 114, 32, 49, 12, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 48, 14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111, 111, 46, 98, 97, 114, 17, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 49, 14, 0, 0, 0, 104, 116, 116, 112, 58, 47, 47, 102, 111, 111, 46, 98, 97, 114, 17, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 86, 69, 82, 73, 70, 89, 32, 75, 69, 89, 1, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 48, 1, 0, 0, 0, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 49, 8, 0, 0, 0, 115, 101, 114, 118, 101, 114, 32, 48, 0, 0, 30, 0, 10, 0, 0, 0, 10, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 100, 0, 0, 0, 0, 0, 0, 0, 250, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 114, 101, 99, 105, 112, 105, 101, 110, 116, 3, 0, 0, 0, 10, 11, 12, 20, 0, 0, 0, 0, 0, 0, 0])
-    );
-    let x0 = deserialize(sut.GameAccount, data);
-    assert.deepStrictEqual(x, x0);
-  });
-});
diff --git a/js/sdk-core/tests/effect.spec.ts b/js/sdk-core/tests/effect.spec.ts
deleted file mode 100644
index d1ccd542..00000000
--- a/js/sdk-core/tests/effect.spec.ts
+++ /dev/null
@@ -1,114 +0,0 @@
-import { assert } from 'chai';
-import { ActionTimeout, Ask, Assign, Effect, Release, Reveal, Settle, SettleAdd, SettleSub, Transfer } from '../src/effect';
-import { serialize } from '@race-foundation/borsh';
-import { ShuffledList } from '../src/random-state';
-import { CustomError, NoEnoughPlayers } from '../src/error';
-
-describe('Test effect serialization 2', () => {
-  let effect = new Effect({
-    actionTimeout: undefined,
-    waitTimeout: undefined,
-    startGame: false,
-    stopGame: false,
-    cancelDispatch: false,
-    timestamp: 1696586237379n,
-    currRandomId: 1,
-    currDecisionId: 1,
-    playersCount: 2,
-    serversCount: 1,
-    asks: [],
-    assigns: [],
-    reveals: [],
-    releases: [],
-    initRandomStates: [],
-    revealed: new Map(),
-    answered: new Map(),
-    isCheckpoint: false,
-    checkpoint: undefined,
-    settles: [],
-    handlerState: Uint8Array.from([0, 0, 0, 0, 0, 0, 0, 0, 16, 39, 0, 0, 0, 0, 0, 0, 32, 78, 0, 0, 0, 0, 0, 0, 32, 78, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6]),
-    error: new CustomError({ message: "Failed to find a player for the next button" }),
-    allowExit: true,
-    transfers: []
-  });
-
-  console.log(Array.from(serialize(effect)).toString())
-})
-
-describe('Test effect serialization', () => {
-  it('serialization', () => {
-    let effect = new Effect({
-      actionTimeout: new ActionTimeout({ playerAddr: 'alice', timeout: 100n }),
-      waitTimeout: 200n,
-      startGame: true,
-      stopGame: true,
-      cancelDispatch: true,
-      timestamp: 300_000n,
-      currRandomId: 1,
-      currDecisionId: 1,
-      playersCount: 4,
-      serversCount: 4,
-      asks: [
-        new Ask({
-          playerAddr: 'bob',
-        }),
-      ],
-      assigns: [
-        new Assign({
-          randomId: 5,
-          playerAddr: 'bob',
-          indexes: [0, 1, 2],
-        }),
-      ],
-      reveals: [
-        new Reveal({
-          randomId: 6,
-          indexes: [0, 1, 2],
-        }),
-      ],
-      releases: [
-        new Release({
-          decisionId: 7,
-        }),
-      ],
-      initRandomStates: [
-        new ShuffledList({
-          options: ['a', 'b'],
-        }),
-      ],
-      revealed: new Map([[22, new Map([[11, 'B']])]]),
-      answered: new Map([[33, 'A']]),
-      isCheckpoint: false,
-      checkpoint: undefined,
-      settles: [
-        new Settle({
-          addr: 'alice',
-          op: new SettleAdd({ amount: 200n }),
-        }),
-        new Settle({
-          addr: 'bob',
-          op: new SettleSub({ amount: 200n }),
-        }),
-      ],
-      handlerState: Uint8Array.of(1, 2, 3, 4),
-      error: new NoEnoughPlayers({}),
-      allowExit: true,
-      transfers: [new Transfer({
-        slotId: 0,
-        amount: 100n
-      })]
-    });
-    const data = serialize(effect);
-    const expected = Uint8Array.from([
-      1, 5, 0, 0, 0, 97, 108, 105, 99, 101, 100, 0, 0, 0, 0, 0, 0, 0, 1, 200, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 224, 147, 4,
-      0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 4, 0, 4, 0, 1, 0, 0, 0, 3, 0, 0, 0, 98, 111, 98, 1,
-      0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 98, 111, 98, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
-      0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
-      0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 97, 1,
-      0, 0, 0, 98, 1, 0, 0, 0, 22, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 66, 1, 0, 0, 0,
-      33, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 65, 0, 0, 2, 0, 0, 0, 5, 0, 0, 0, 97, 108, 105, 99, 101, 0, 200, 0, 0, 0, 0, 0, 0,
-      0, 3, 0, 0, 0, 98, 111, 98, 1, 200, 0, 0, 0, 0, 0, 0, 0, 1, 4, 0, 0, 0, 1, 2, 3, 4, 1, 1, 1, 1, 0, 0, 0, 0, 100, 0, 0, 0, 0, 0, 0, 0,
-    ]);
-    assert.deepEqual(data, expected);
-  });
-});
diff --git a/js/sdk-core/tests/events.spec.ts b/js/sdk-core/tests/events.spec.ts
index 9ec773bc..902550f8 100644
--- a/js/sdk-core/tests/events.spec.ts
+++ b/js/sdk-core/tests/events.spec.ts
@@ -14,7 +14,7 @@ import {
   Lock,
   CiphertextAndDigest,
   RandomnessReady,
-  Sync,
+  Join,
   ServerLeave,
   Leave,
   WaitingTimeout,
@@ -23,7 +23,7 @@ import {
 } from '../src/events';
 import { assert } from 'chai';
 import { deserialize, serialize, field } from '@race-foundation/borsh';
-import { ServerJoin, PlayerJoin } from '../src/accounts';
+import { GamePlayer } from '../src/init-account';
 
 class TestCustom implements ICustomEvent {
   @field('u32')
@@ -41,7 +41,7 @@ class TestCustom implements ICustomEvent {
 
 describe('Serialization', () => {
   it('Custom', () => {
-    let e = makeCustomEvent('alice', new TestCustom({ n: 100 }));
+    let e = makeCustomEvent(1n, new TestCustom({ n: 100 }));
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
     assert.deepStrictEqual(e, e1);
@@ -56,7 +56,7 @@ describe('Serialization', () => {
 
   it('ShareSecrets', () => {
     let e = new ShareSecrets({
-      sender: 'alice',
+      sender: 1n,
       shares: [
         new Random({
           fromAddr: 'alice',
@@ -78,14 +78,14 @@ describe('Serialization', () => {
   });
 
   it('OperationTimeout', () => {
-    let e = new OperationTimeout({ addrs: ['alice', 'bob'] });
+    let e = new OperationTimeout({ ids: [1n, 2n] });
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
     assert.deepStrictEqual(e1, e);
   });
 
   it('Mask', () => {
-    let e = new Mask({ sender: 'alice', randomId: 1, ciphertexts: [Uint8Array.of(1, 2, 3)] });
+    let e = new Mask({ sender: 1n, randomId: 1, ciphertexts: [Uint8Array.of(1, 2, 3)] });
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
     assert.deepStrictEqual(e1, e);
@@ -93,7 +93,7 @@ describe('Serialization', () => {
 
   it('Lock', () => {
     let e = new Lock({
-      sender: 'alice',
+      sender: 1n,
       randomId: 1,
       ciphertextsAndDigests: [
         new CiphertextAndDigest({
@@ -116,27 +116,15 @@ describe('Serialization', () => {
     assert.deepStrictEqual(e1, e);
   });
 
-  it('Sync', () => {
-    let e = new Sync({
-      newPlayers: [
-        new PlayerJoin({
-          addr: 'alice',
+  it('Join', () => {
+    let e = new Join({
+      players: [
+        new GamePlayer({
+          id: 1n,
           position: 1,
           balance: 100n,
-          accessVersion: 1n,
-          verifyKey: 'key0',
         }),
       ],
-      newServers: [
-        new ServerJoin({
-          addr: 'foo',
-          endpoint: 'http://foo.bar',
-          accessVersion: 2n,
-          verifyKey: 'key1',
-        }),
-      ],
-      transactorAddr: 'foo',
-      accessVersion: 2n,
     });
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
@@ -144,14 +132,14 @@ describe('Serialization', () => {
   });
 
   it('ServerLeave', () => {
-    let e = new ServerLeave({ serverAddr: 'foo', transactorAddr: 'bar' });
+    let e = new ServerLeave({ serverId: 2n });
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
     assert.deepStrictEqual(e1, e);
   });
 
   it('Leave', () => {
-    let e = new Leave({ playerAddr: 'foo' });
+    let e = new Leave({ playerId: 1n });
     let data = serialize(e);
     let e1 = deserialize(GameEvent, data);
     assert.deepStrictEqual(e1, e);
@@ -173,7 +161,7 @@ describe('Serialization', () => {
 
   it('DrawRandomItems', () => {
     let e = new DrawRandomItems({
-      sender: 'alice',
+      sender: 1n,
       randomId: 1,
       indexes: [10, 20],
     });
@@ -199,10 +187,10 @@ describe('Serialization', () => {
 
 describe('Create custom event', () => {
   it('Create', () => {
-    let e = makeCustomEvent('addr', new TestCustom({ n: 1 }));
+    let e = makeCustomEvent(1n, new TestCustom({ n: 1 }));
 
     let e1 = new Custom({
-      sender: 'addr',
+      sender: 1n,
       raw: Uint8Array.of(1, 0, 0, 0),
     });
 
diff --git a/js/sdk-core/tsfmt.json b/js/sdk-core/tsfmt.json
index ac46672c..5823aaa0 120000
--- a/js/sdk-core/tsfmt.json
+++ b/js/sdk-core/tsfmt.json
@@ -1 +1 @@
-/home/tianshu/workspace/race/js/config/tsfmt.json
\ No newline at end of file
+../config/tsfmt.json
\ No newline at end of file
diff --git a/js/sdk-facade/src/facade-transport.ts b/js/sdk-facade/src/facade-transport.ts
index 936c5821..9fc28dab 100644
--- a/js/sdk-facade/src/facade-transport.ts
+++ b/js/sdk-facade/src/facade-transport.ts
@@ -24,6 +24,7 @@ import {
   VoteParams,
   IStorage,
   TransactionResult,
+  ITokenWithBalance,
 } from '@race-foundation/sdk-core';
 import { deserialize } from '@race-foundation/borsh';
 
@@ -151,8 +152,22 @@ export class FacadeTransport implements ITransport {
     throw new Error('Method not implemented.');
   }
 
-  async listTokens(_storage?: IStorage): Promise<IToken[]> {
-    return Object.values(tokenMap);
+  async listTokens(tokenAddrs: string[], _storage?: IStorage): Promise<IToken[]> {
+    return Object.values(tokenMap).filter(t => tokenAddrs.includes(t.addr));
+  }
+
+  async listTokensWithBalance(walletAddr: string, tokenAddrs: string[], storage?: IStorage): Promise<ITokenWithBalance[]> {
+    const balances = await this.fetchBalances(walletAddr, tokenAddrs);
+    const tokens = Object.values(tokenMap).filter(t => tokenAddrs.includes(t.addr))
+    let ret: ITokenWithBalance[] = [];
+    for (const token of tokens) {
+      const amount = balances.get(token.addr) || 0n;
+      const uiAmount = (Number(amount) / Math.pow(10, token.decimals)).toString()
+      ret.push({
+        amount, uiAmount, ...token
+      })
+    }
+    return ret;
   }
 
   async createPlayerProfile(wallet: IWallet, params: CreatePlayerProfileParams): Promise<TransactionResult<void>> {
@@ -163,8 +178,12 @@ export class FacadeTransport implements ITransport {
   }
   async join(wallet: IWallet, params: JoinParams): Promise<TransactionResult<void>> {
     const playerAddr = wallet.walletAddr;
-    const ix: JoinInstruction = { playerAddr, ...params };
-    if (params.createProfile) {
+    const gameAccount = await this.getGameAccount(params.gameAddr);
+    if (gameAccount === undefined) {
+      throw new Error('Game not found')
+    }
+    const ix: JoinInstruction = { playerAddr, accessVersion: gameAccount.accessVersion, ...params };
+    if (params.createProfileIfNeeded) {
       await this.createPlayerProfile(wallet, { nick: wallet.walletAddr.substring(0, 6) });
     }
     await this.sendInstruction('join', ix);
@@ -279,6 +298,7 @@ export class FacadeTransport implements ITransport {
       throw new Error('Failed to fetch data at :' + params);
     }
     const { result } = await resp.json();
+    console.debug('Facade request:', { method, params, result });
     if (result !== null) {
       return Uint8Array.from(result);
     } else {
diff --git a/js/sdk-facade/tsfmt.json b/js/sdk-facade/tsfmt.json
index ac46672c..5823aaa0 120000
--- a/js/sdk-facade/tsfmt.json
+++ b/js/sdk-facade/tsfmt.json
@@ -1 +1 @@
-/home/tianshu/workspace/race/js/config/tsfmt.json
\ No newline at end of file
+../config/tsfmt.json
\ No newline at end of file
diff --git a/js/sdk-solana/src/accounts.ts b/js/sdk-solana/src/accounts.ts
index 743eb141..349ea802 100644
--- a/js/sdk-solana/src/accounts.ts
+++ b/js/sdk-solana/src/accounts.ts
@@ -68,7 +68,6 @@ export interface IGameState {
   entryType: EntryType;
   recipientAddr: PublicKey;
   checkpoint: Uint8Array;
-  checkpointAccessVersion: bigint;
 }
 
 export interface IServerState {
@@ -79,9 +78,9 @@ export interface IServerState {
 }
 
 export interface IRecipientState {
-  readonly addr: PublicKey;
-  readonly capAddr: PublicKey | undefined;
-  readonly slots: IRecipientSlot[];
+  isInitialized: boolean;
+  capAddr: PublicKey | undefined;
+  slots: IRecipientSlot[];
 }
 
 const RECIPIENT_SLOT_TYPE = {
@@ -103,7 +102,6 @@ export interface IRecipientSlotShare {
   readonly owner: RecipientSlotOwner;
   readonly weights: number;
   readonly claimAmount: bigint;
-  readonly claimAmountCap: bigint;
 }
 
 export class PlayerState implements IPlayerState {
@@ -243,8 +241,6 @@ export class GameState implements IGameState {
   recipientAddr!: PublicKey;
   @field('u8-array')
   checkpoint!: Uint8Array;
-  @field('u64')
-  checkpointAccessVersion!: bigint;
 
   constructor(fields: IGameState) {
     Object.assign(this, fields);
@@ -259,6 +255,12 @@ export class GameState implements IGameState {
   }
 
   generalize(addr: PublicKey): RaceCore.GameAccount {
+
+    let checkpointOnChain = undefined;
+    if (this.checkpoint.length !== 0) {
+      checkpointOnChain = RaceCore.CheckpointOnChain.fromRaw(this.checkpoint);
+    }
+
     return new RaceCore.GameAccount({
       addr: addr.toBase58(),
       title: this.title,
@@ -278,8 +280,7 @@ export class GameState implements IGameState {
       unlockTime: this.unlockTime,
       entryType: this.entryType,
       recipientAddr: this.recipientAddr.toBase58(),
-      checkpoint: this.checkpoint,
-      checkpointAccessVersion: this.checkpointAccessVersion,
+      checkpointOnChain,
     });
   }
 }
@@ -399,8 +400,6 @@ export class RecipientSlotShare implements IRecipientSlotShare {
   weights!: number;
   @field('u64')
   claimAmount!: bigint;
-  @field('u64')
-  claimAmountCap!: bigint;
   constructor(fields: IRecipientSlotShare) {
     Object.assign(this, fields);
   }
@@ -415,7 +414,7 @@ export class RecipientSlotShare implements IRecipientSlotShare {
       throw new Error('Invalid slot owner');
     }
     return new RaceCore.RecipientSlotShare({
-      owner, weights: this.weights, claimAmount: this.claimAmount, claimAmountCap: this.claimAmountCap
+      owner, weights: this.weights, claimAmount: this.claimAmount
     })
   }
 }
@@ -435,19 +434,20 @@ export class RecipientSlot implements IRecipientSlot {
     Object.assign(this, fields);
   }
 
-  generalize(): RaceCore.RecipientSlot {
+  generalize(balance: bigint): RaceCore.RecipientSlot {
     return new RaceCore.RecipientSlot({
       id: this.id,
       slotType: this.slotType,
       tokenAddr: this.tokenAddr.toBase58(),
       shares: this.shares.map(s => s.generalize()),
+      balance,
     });
   }
 }
 
 export class RecipientState implements IRecipientState {
-  @field(publicKeyExt)
-  addr!: PublicKey;
+  @field('bool')
+  isInitialized!: boolean;
   @field(option(publicKeyExt))
   capAddr: PublicKey | undefined;
   @field(array(struct(RecipientSlot)))
@@ -465,11 +465,11 @@ export class RecipientState implements IRecipientState {
     return deserialize(this, data);
   }
 
-  generalize(): RaceCore.RecipientAccount {
+  generalize(addr: string, slots: RaceCore.RecipientSlot[]): RaceCore.RecipientAccount {
     return new RaceCore.RecipientAccount({
-      addr: this.addr.toBase58(),
+      addr,
       capAddr: this.capAddr?.toBase58(),
-      slots: this.slots.map(s => s.generalize()),
+      slots
     });
   }
 }
diff --git a/js/sdk-solana/src/instruction.ts b/js/sdk-solana/src/instruction.ts
index 2cc603df..ccb2390e 100644
--- a/js/sdk-solana/src/instruction.ts
+++ b/js/sdk-solana/src/instruction.ts
@@ -1,10 +1,11 @@
-import { PublicKey, SYSVAR_RENT_PUBKEY, TransactionInstruction } from '@solana/web3.js';
+import { PublicKey, SYSVAR_RENT_PUBKEY, SystemProgram, TransactionInstruction } from '@solana/web3.js';
 import { TOKEN_PROGRAM_ID, getAssociatedTokenAddressSync } from '@solana/spl-token';
 import { publicKeyExt } from './utils';
 import { PROGRAM_ID, METAPLEX_PROGRAM_ID, PLAYER_PROFILE_SEED } from './constants';
 import { enums, field, serialize } from '@race-foundation/borsh';
 import { Buffer } from 'buffer';
 import { EntryType } from '@race-foundation/sdk-core';
+import { RecipientSlotOwnerAssigned, RecipientState } from './accounts';
 
 // Instruction types
 
@@ -21,6 +22,9 @@ export enum Instruction {
   UnregisterGame = 9,
   JoinGame = 10,
   PublishGame = 11,
+  CreateRecipient = 12,
+  AssignRecipient = 13,
+  RecipientClaim = 14,
 }
 
 // Instruction data definitations
@@ -146,15 +150,55 @@ export type CreateGameOptions = {
   ownerKey: PublicKey;
   gameAccountKey: PublicKey;
   stakeAccountKey: PublicKey;
+  recipientAccountKey: PublicKey;
   mint: PublicKey;
   gameBundleKey: PublicKey;
   title: string;
   maxPlayers: number;
   entryType: EntryType;
+  data: Uint8Array,
 };
 
+export type RegisterGameOptions = {
+  ownerKey: PublicKey;
+  gameAccountKey: PublicKey;
+  registrationAccountKey: PublicKey;
+}
+
+export function registerGame(opts: RegisterGameOptions): TransactionInstruction {
+  const data = Buffer.from(Uint8Array.of(Instruction.RegisterGame));
+  return new TransactionInstruction({
+    keys: [
+      {
+        pubkey: opts.ownerKey,
+        isSigner: true,
+        isWritable: false,
+      },
+      {
+        pubkey: opts.registrationAccountKey,
+        isSigner: false,
+        isWritable: true,
+      },
+      {
+        pubkey: opts.gameAccountKey,
+        isSigner: false,
+        isWritable: false,
+      }
+    ],
+    programId: PROGRAM_ID,
+    data,
+  });
+}
+
 export function createGameAccount(opts: CreateGameOptions): TransactionInstruction {
-  const data = new CreateGameAccountData(opts).serialize();
+  const params = new CreateGameAccountData({
+    title: opts.title,
+    entryType: opts.entryType,
+    maxPlayers: opts.maxPlayers,
+    data: opts.data,
+  })
+  console.log('CreateGameAccountParams:', params);
+  const data = params.serialize();
   return new TransactionInstruction({
     keys: [
       {
@@ -187,6 +231,11 @@ export function createGameAccount(opts: CreateGameOptions): TransactionInstructi
         isSigner: false,
         isWritable: false,
       },
+      {
+        pubkey: opts.recipientAccountKey,
+        isSigner: false,
+        isWritable: false,
+      },
     ],
     programId: PROGRAM_ID,
     data,
@@ -244,6 +293,7 @@ export function closeGameAccount(opts: CloseGameAccountOptions): TransactionInst
 
 export type JoinOptions = {
   playerKey: PublicKey;
+  profileKey: PublicKey;
   paymentKey: PublicKey;
   gameAccountKey: PublicKey;
   mint: PublicKey;
@@ -254,12 +304,10 @@ export type JoinOptions = {
   verifyKey: string;
 };
 
-export async function join(opts: JoinOptions): Promise<TransactionInstruction> {
-  const { playerKey, paymentKey, gameAccountKey, mint, stakeAccountKey, amount, accessVersion, position, verifyKey } =
+export function join(opts: JoinOptions): TransactionInstruction {
+  const { playerKey, profileKey, paymentKey, gameAccountKey, mint, stakeAccountKey, amount, accessVersion, position, verifyKey } =
     opts;
 
-  const profileKey = await PublicKey.createWithSeed(playerKey, PLAYER_PROFILE_SEED, PROGRAM_ID);
-
   let [pda, _] = PublicKey.findProgramAddressSync([gameAccountKey.toBuffer()], PROGRAM_ID);
   const data = new JoinGameData(amount, accessVersion, position, verifyKey).serialize();
 
@@ -388,3 +436,70 @@ export function publishGame(opts: PublishGameOptions): TransactionInstruction {
     data,
   });
 }
+
+
+export type ClaimOpts = {
+  payerKey: PublicKey,
+  recipientKey: PublicKey,
+  recipientState: RecipientState,
+};
+
+export function claim(opts: ClaimOpts): TransactionInstruction {
+  const [pda, _] = PublicKey.findProgramAddressSync([opts.recipientKey.toBuffer()], PROGRAM_ID);
+
+  let keys = [
+    {
+      pubkey: opts.payerKey,
+      isSigner: true,
+      isWritable: false,
+    },
+    {
+      pubkey: opts.recipientKey,
+      isSigner: false,
+      isWritable: true,
+    },
+    {
+      pubkey: pda,
+      isSigner: false,
+      isWritable: false,
+    },
+    {
+      pubkey: TOKEN_PROGRAM_ID,
+      isSigner: false,
+      isWritable: false,
+    },
+    {
+      pubkey: SystemProgram.programId,
+      isSigner: false,
+      isWritable: false,
+    },
+  ];
+
+  for (const slot of opts.recipientState.slots) {
+    for (const slotShare of slot.shares) {
+      if (slotShare.owner instanceof RecipientSlotOwnerAssigned && slotShare.owner.addr === opts.payerKey) {
+        keys.push({
+          pubkey: slot.stakeAddr,
+          isSigner: false,
+          isWritable: false,
+        });
+        const ata = getAssociatedTokenAddressSync(slotShare.owner.addr, slot.tokenAddr);
+        keys.push({
+          pubkey: ata,
+          isSigner: false,
+          isWritable: false,
+        })
+      }
+    }
+  }
+
+  if (keys.length === 5) {
+    throw new Error('No slot to claim');
+  }
+
+  return new TransactionInstruction({
+    keys,
+    programId: PROGRAM_ID,
+    data: Buffer.from(Uint8Array.of(Instruction.RecipientClaim)),
+  });
+}
diff --git a/js/sdk-solana/src/solana-transport.ts b/js/sdk-solana/src/solana-transport.ts
index 53c594f3..0a6607c3 100644
--- a/js/sdk-solana/src/solana-transport.ts
+++ b/js/sdk-solana/src/solana-transport.ts
@@ -1,7 +1,8 @@
-import { SystemProgram, Connection, PublicKey, Transaction, Keypair } from '@solana/web3.js';
+import { SystemProgram, Connection, PublicKey, Keypair, ComputeBudgetProgram, TransactionMessage, TransactionInstruction, VersionedTransaction, AccountInfo } from '@solana/web3.js';
 import { Buffer } from 'buffer';
 import {
   AccountLayout,
+  MintLayout,
   NATIVE_MINT,
   TOKEN_PROGRAM_ID,
   createInitializeAccountInstruction,
@@ -31,12 +32,16 @@ import {
   INft,
   RegistrationWithGames,
   RecipientAccount,
+  RecipientSlot,
   RecipientClaimParams,
   EntryTypeCash,
   IStorage,
   getTtlCache,
   setTtlCache,
   TransactionResult,
+  ITokenWithBalance,
+  TokenWithBalance,
+  Token,
 } from '@race-foundation/sdk-core';
 import * as instruction from './instruction';
 
@@ -48,7 +53,6 @@ import { join } from './instruction';
 import { PROGRAM_ID, METAPLEX_PROGRAM_ID } from './constants';
 import { Metadata } from './metadata';
 
-const TOKEN_CACHE_TTL = 24 * 3600;
 const NFT_CACHE_TTL = 24 * 30 * 3600;
 
 function trimString(s: string): string {
@@ -82,7 +86,7 @@ export class SolanaTransport implements ITransport {
   }
 
   async createGameAccount(wallet: IWallet, params: CreateGameAccountParams): Promise<TransactionResult<string>> {
-    const { title, bundleAddr, tokenAddr } = params;
+    const { title, bundleAddr, tokenAddr, recipientAddr } = params;
     if (title.length > NAME_LEN) {
       // FIXME: better error message?
       throw Error('Game title length exceeds 16 chars');
@@ -92,10 +96,11 @@ export class SolanaTransport implements ITransport {
     const payerKey = new PublicKey(wallet.walletAddr);
     console.log('Payer publick key: ', payerKey);
 
-    let tx = await makeTransaction(conn, payerKey);
+    let ixs = [];
 
     const gameAccount = Keypair.generate();
     const gameAccountKey = gameAccount.publicKey;
+    const registrationAccountKey = new PublicKey(params.registrationAddr);
     const lamports = await conn.getMinimumBalanceForRentExemption(GAME_ACCOUNT_LEN);
     const createGameAccount = SystemProgram.createAccount({
       fromPubkey: payerKey,
@@ -104,8 +109,10 @@ export class SolanaTransport implements ITransport {
       space: GAME_ACCOUNT_LEN,
       programId: PROGRAM_ID,
     });
-    tx.add(createGameAccount);
+    console.log(createGameAccount);
+    ixs.push(createGameAccount);
 
+    const recipientAccountKey = new PublicKey(recipientAddr);
     const tokenMintKey = new PublicKey(tokenAddr);
     const stakeAccount = Keypair.generate();
     const stakeAccountKey = stakeAccount.publicKey;
@@ -117,7 +124,8 @@ export class SolanaTransport implements ITransport {
       space: AccountLayout.span,
       programId: TOKEN_PROGRAM_ID,
     });
-    tx.add(createStakeAccount);
+    console.log(createStakeAccount);
+    ixs.push(createStakeAccount);
 
     const initStakeAccount = createInitializeAccountInstruction(
       stakeAccountKey,
@@ -125,23 +133,39 @@ export class SolanaTransport implements ITransport {
       payerKey,
       TOKEN_PROGRAM_ID
     );
-    tx.add(initStakeAccount);
+    console.log(initStakeAccount);
+    ixs.push(initStakeAccount);
 
     const bundleKey = new PublicKey(bundleAddr);
     const createGame = instruction.createGameAccount({
       ownerKey: payerKey,
       gameAccountKey: gameAccountKey,
       stakeAccountKey: stakeAccountKey,
+      recipientAccountKey: recipientAccountKey,
       mint: tokenMintKey,
       gameBundleKey: bundleKey,
       title: title,
       maxPlayers: params.maxPlayers,
       entryType: params.entryType,
+      data: params.data,
     });
-    tx.add(createGame);
-    tx.partialSign(gameAccount, stakeAccount);
+    console.log(createGame);
+    ixs.push(createGame);
+
+    const registerGame = instruction.registerGame({
+      ownerKey: payerKey,
+      gameAccountKey: gameAccountKey,
+      registrationAccountKey: registrationAccountKey
+    });
+    console.log(registerGame);
+    ixs.push(registerGame);
+
+    let tx = await makeTransaction(this.#conn, payerKey, ixs);
+
+    const res = await wallet.sendTransaction(tx, conn,
+      { signers: [gameAccount, stakeAccount] }
+    );
 
-    const res = await wallet.sendTransaction(tx, conn);
     if (res.result === 'ok') {
       return { result: 'ok', value: gameAccountKey.toBase58() };
     } else {
@@ -154,17 +178,30 @@ export class SolanaTransport implements ITransport {
   }
 
   async join(wallet: IWallet, params: JoinParams): Promise<TransactionResult<void>> {
-    const conn = this.#conn;
-    const { gameAddr, amount: amountRaw, accessVersion: accessVersionRaw, position, verifyKey } = params;
+    let ixs = [];
 
-    const accessVersion = BigInt(accessVersionRaw);
-    const playerKey = new PublicKey(wallet.walletAddr);
+    const tempAccountLen = AccountLayout.span;
+
+    const conn = this.#conn;
+    const { gameAddr, amount: amountRaw, position, verifyKey } = params;
     const gameAccountKey = new PublicKey(gameAddr);
-    const gameState = await this._getGameState(gameAccountKey);
+    const playerKey = new PublicKey(wallet.walletAddr);
+
+    // Call RPC functions in Parallel
+    const [tempAccountLamports, prioritizationFee, gameState, playerProfile] = await Promise.all([
+      conn.getMinimumBalanceForRentExemption(tempAccountLen),
+      this._getPrioritizationFee([gameAccountKey]),
+      this._getGameState(gameAccountKey),
+      this.getPlayerProfile(wallet.walletAddr)
+    ])
+
+    const profileKey0 = playerProfile !== undefined ? new PublicKey(playerProfile?.addr) : undefined;
+
     if (gameState === undefined) {
       throw new Error('Game account not found');
     }
 
+    const accessVersion = gameState.accessVersion;
     if (!(gameState.entryType instanceof EntryTypeCash)) {
       throw new Error('Unsupported entry type');
     }
@@ -185,15 +222,18 @@ export class SolanaTransport implements ITransport {
     const stakeAccountKey = gameState.stakeKey;
     const tempAccountKeypair = Keypair.generate();
     const tempAccountKey = tempAccountKeypair.publicKey;
-    const tempAccountLen = AccountLayout.span;
-    const tempAccountLamports = await conn.getMinimumBalanceForRentExemption(tempAccountLen);
 
-    const tx = await makeTransaction(conn, playerKey);
+    ixs.push(ComputeBudgetProgram.setComputeUnitPrice({ microLamports: prioritizationFee }))
 
-    if (params.createProfile) {
-      await this.addCreateProfileIxToTransaction(tx, wallet, {
+    let profileKey: PublicKey;
+    if (profileKey0 !== undefined) {
+      profileKey = profileKey0;
+    } else if (params.createProfileIfNeeded) {
+      profileKey = await this.appendCreateProfileIxs(ixs, wallet, {
         nick: wallet.walletAddr.substring(0, 6),
-      });
+      })
+    } else {
+      throw new Error('Player has no profile account');
     }
 
     const createTempAccountIx = SystemProgram.createAccount({
@@ -203,10 +243,10 @@ export class SolanaTransport implements ITransport {
       space: tempAccountLen,
       programId: TOKEN_PROGRAM_ID,
     });
-    tx.add(createTempAccountIx);
+    ixs.push(createTempAccountIx);
 
     const initTempAccountIx = createInitializeAccountInstruction(tempAccountKey, mintKey, playerKey);
-    tx.add(initTempAccountIx);
+    ixs.push(initTempAccountIx);
 
     if (isWsol) {
       const transferAmount = amount - BigInt(tempAccountLamports);
@@ -215,15 +255,16 @@ export class SolanaTransport implements ITransport {
         toPubkey: tempAccountKey,
         lamports: transferAmount,
       });
-      tx.add(transferIx);
+      ixs.push(transferIx);
     } else {
       const playerAta = getAssociatedTokenAddressSync(mintKey, playerKey);
       const transferIx = createTransferInstruction(playerAta, tempAccountKey, playerKey, amount);
-      tx.add(transferIx);
+      ixs.push(transferIx);
     }
 
-    const joinGameIx = await join({
+    const joinGameIx = join({
       playerKey,
+      profileKey,
       paymentKey: tempAccountKey,
       gameAccountKey,
       mint: mintKey,
@@ -233,11 +274,10 @@ export class SolanaTransport implements ITransport {
       position,
       verifyKey,
     });
-    tx.add(joinGameIx);
-
-    tx.partialSign(tempAccountKeypair);
+    ixs.push(joinGameIx);
 
-    return await wallet.sendTransaction(tx, this.#conn);
+    const tx = await makeTransaction(this.#conn, playerKey, ixs);
+    return await wallet.sendTransaction(tx, this.#conn, { signers: [tempAccountKeypair] });
   }
 
   async deposit(_wallet: IWallet, _params: DepositParams): Promise<TransactionResult<void>> {
@@ -252,20 +292,33 @@ export class SolanaTransport implements ITransport {
     throw new Error('unimplemented');
   }
 
-  async recipientClaim(_wallet: IWallet, _params: RecipientClaimParams): Promise<TransactionResult<void>> {
-    throw new Error('unimplemented');
+  async recipientClaim(wallet: IWallet, params: RecipientClaimParams): Promise<TransactionResult<void>> {
+    const payerKey = new PublicKey(wallet.walletAddr);
+    const recipientKey = new PublicKey(params.recipientAddr);
+    const recipientState = await this._getRecipientState(recipientKey);
+
+    if (recipientState === undefined) {
+      throw new Error('Recipient account not found');
+    }
+
+    const recipientClaimIx = instruction.claim({
+      recipientKey, payerKey, recipientState
+    });
+    const tx = await makeTransaction(this.#conn, payerKey, [recipientClaimIx]);
+
+    return await wallet.sendTransaction(tx, this.#conn);
   }
 
-  async addCreateProfileIxToTransaction(tx: Transaction, wallet: IWallet, params: CreatePlayerProfileParams): Promise<void> {
+  async appendCreateProfileIxs(ixs: TransactionInstruction[], wallet: IWallet, params: CreatePlayerProfileParams): Promise<PublicKey> {
     const { nick, pfp } = params;
     if (nick.length > 16) {
       throw new Error('Player nick name exceeds 16 chars');
     }
     const payerKey = new PublicKey(wallet.walletAddr);
-    console.log('Payer Public Key:', payerKey);
+    console.log('Payer Public Key:', payerKey.toBase58());
 
     const profileKey = await PublicKey.createWithSeed(payerKey, PLAYER_PROFILE_SEED, PROGRAM_ID);
-    console.log('Player profile public key: ', profileKey);
+    console.log('Player profile public key: ', profileKey.toBase58());
 
     if (!(await this.#conn.getAccountInfo(profileKey))) {
       let lamports = await this.#conn.getMinimumBalanceForRentExemption(PROFILE_ACCOUNT_LEN);
@@ -279,31 +332,37 @@ export class SolanaTransport implements ITransport {
         space: PROFILE_ACCOUNT_LEN,
         programId: PROGRAM_ID,
       });
-      tx.add(createProfileAccount);
+      ixs.push(createProfileAccount);
     }
 
     const pfpKey = !pfp ? PublicKey.default : new PublicKey(pfp);
     const createProfile = instruction.createPlayerProfile(payerKey, profileKey, nick, pfpKey);
 
-    tx.add(createProfile);
+    ixs.push(createProfile);
+    return profileKey;
   }
 
   async createPlayerProfile(wallet: IWallet, params: CreatePlayerProfileParams): Promise<TransactionResult<void>> {
+    let ixs: TransactionInstruction[] = [];
+
     const payerKey = new PublicKey(wallet.walletAddr);
-    let tx = await makeTransaction(this.#conn, payerKey);
-    await this.addCreateProfileIxToTransaction(tx, wallet, params);
+    // const prioritizationFee = await this._getPrioritizationFee([]);
+    // ixs.push(ComputeBudgetProgram.setComputeUnitPrice({ microLamports: prioritizationFee }));
+    await this.appendCreateProfileIxs(ixs, wallet, params);
+
+    let tx = await makeTransaction(this.#conn, payerKey, ixs);
     return await wallet.sendTransaction(tx, this.#conn);
   }
 
-  async createRegistration(wallet: IWallet, params: CreateRegistrationParams): Promise<TransactionResult<string>> {
+  async createRegistration(_wallet: IWallet, _params: CreateRegistrationParams): Promise<TransactionResult<string>> {
     throw new Error('unimplemented');
   }
 
-  async registerGame(wallet: IWallet, params: RegisterGameParams): Promise<TransactionResult<void>> {
+  async registerGame(_wallet: IWallet, _params: RegisterGameParams): Promise<TransactionResult<void>> {
     throw new Error('unimplemented');
   }
 
-  async unregisterGame(wallet: IWallet, params: UnregisterGameParams): Promise<TransactionResult<void>> {
+  async unregisterGame(_wallet: IWallet, _params: UnregisterGameParams): Promise<TransactionResult<void>> {
     throw new Error('unimplemented');
   }
 
@@ -397,14 +456,17 @@ export class SolanaTransport implements ITransport {
     });
   }
 
-  async getRecipient(addr: String): Promise<RecipientAccount | undefined> {
+  async getRecipient(addr: string): Promise<RecipientAccount | undefined> {
     const recipientKey = new PublicKey(addr);
     const recipientState = await this._getRecipientState(recipientKey);
-    if (recipientState !== undefined) {
-      return recipientState.generalize();
-    } else {
-      return undefined;
+    if (recipientState === undefined) return undefined;
+    let slots: RecipientSlot[] = [];
+    for (const slot of recipientState.slots) {
+      const resp = await this.#conn.getTokenAccountBalance(slot.stakeAddr);
+      const balance = BigInt(resp.value.amount);
+      slots.push(slot.generalize(balance));
     }
+    return recipientState.generalize(addr, slots);
   }
 
   async _fetchImageFromDataUri(dataUri: string): Promise<string | undefined> {
@@ -417,6 +479,18 @@ export class SolanaTransport implements ITransport {
     }
   }
 
+  async _getPrioritizationFee(pubkeys: PublicKey[]): Promise<number> {
+    const prioritizationFee = await this.#conn.getRecentPrioritizationFees({
+      lockedWritableAccounts: pubkeys
+    });
+    let f = 0;
+    for (const fee of prioritizationFee) {
+      f = fee.prioritizationFee;
+    }
+    console.log('Prioritization fee:', f);
+    return f;
+  }
+
   async getToken(addr: string): Promise<IToken | undefined> {
     const mintKey = new PublicKey(addr);
     try {
@@ -465,58 +539,147 @@ export class SolanaTransport implements ITransport {
     }
   }
 
-  /**
-   * List popular tokens.
-   *
-   * [USDT, USDC, SOL, RACE]
-   */
-  async listTokens(storage?: IStorage): Promise<IToken[]> {
-    const popularTokenAddrs = [
-      'Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB',
-      'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v',
-      'So11111111111111111111111111111111111111112',
-    ];
-
-    let tokens = [];
-    for (const addr of popularTokenAddrs) {
-      const cacheKey = `TOKEN_CACHE__${this.chain}__${addr}`;
-
-      // Read token info from cache
-      if (storage !== undefined) {
-        const tokenInfo: IToken | undefined = getTtlCache(storage, cacheKey)
-        if (tokenInfo !== undefined) {
-          tokens.push(tokenInfo);
-          continue;
-        }
+  // Return [name, symbol, icon]
+  async parseTokenMetadata(addr: string, metadataAccount: AccountInfo<Buffer>): Promise<[string | undefined, string | undefined, string | undefined]> {
+    const metadataState = Metadata.deserialize(metadataAccount.data);
+    const uri = trimString(metadataState.data.uri);
+    const image = uri ? await this._fetchImageFromDataUri(uri): undefined;
+    if (this.#legacyTokens === undefined) {
+      await this._fetchLegacyTokens();
+    }
+    let legacyToken: LegacyToken | undefined = undefined;
+    if (this.#legacyTokens !== undefined) {
+      legacyToken = this.#legacyTokens.find(t => t.address === addr);
+    }
+
+    const name = metadataState.data.name
+      ? trimString(metadataState.data.name)
+      : legacyToken
+        ? legacyToken.name
+        : '';
+    const symbol = metadataState.data.symbol
+      ? trimString(metadataState.data.symbol)
+      : legacyToken
+        ? legacyToken.symbol
+        : '';
+    const icon = image ? image : legacyToken?.logoURI ? legacyToken.logoURI : '';
+    return [name, symbol, icon];
+  }
+
+  async listTokens(tokenAddrs: string[], storage?: IStorage): Promise<IToken[]> {
+    if (tokenAddrs.length > 30) {
+      throw new Error('Too many token addresses in a row');
+    }
+
+    let results = [];
+
+    let mintMetaList: [PublicKey, PublicKey][] = [];
+    for (const t of tokenAddrs) {
+      const mintKey = new PublicKey(t);
+      const [metadataKey] = PublicKey.findProgramAddressSync(
+        [Buffer.from('metadata', 'utf8'), METAPLEX_PROGRAM_ID.toBuffer(), mintKey.toBuffer()],
+        METAPLEX_PROGRAM_ID
+      );
+      mintMetaList.push([mintKey, metadataKey]);
+    }
+
+    const accountInfos = await this.#conn.getMultipleAccountsInfo(mintMetaList.flat())
+    for (let i = 0; i < mintMetaList.length; i++) {
+      const mintKey = mintMetaList[i][0];
+      const mintAccount = accountInfos[2 * i];
+      const metadataAccount = accountInfos[2 * i + 1];
+
+      let addr = mintKey.toBase58();
+      let decimals: number | undefined = undefined;
+      let name: string | undefined = undefined;
+      let symbol: string | undefined = undefined;
+      let icon: string | undefined = undefined;
+
+      if (mintAccount) {
+        const m = MintLayout.decode(mintAccount.data);
+        decimals = m.decimals;
       }
 
-      // Read on-chain data
-      const tokenInfo = await this.getToken(addr);
-      if (tokenInfo !== undefined) {
-        tokens.push(tokenInfo);
+      if (metadataAccount) {
+        [name, symbol, icon] = await this.parseTokenMetadata(addr, metadataAccount);
+      }
 
-        // Save to cache
-        if (storage !== undefined) {
-          setTtlCache(storage, cacheKey, tokenInfo, TOKEN_CACHE_TTL);
-        }
+      console.log(addr, decimals, name, symbol, icon);
+
+      if (decimals !== undefined
+        && name !== undefined
+        && symbol !== undefined
+        && icon !== undefined
+      ) {
+        results.push(new Token({ addr, name, symbol, icon, decimals }));
       }
     }
-    return tokens;
+
+    return results;
   }
 
-  async fetchBalances(walletAddr: string, tokenAddrs: string[]): Promise<Map<string, bigint>> {
-    const walletKey = new PublicKey(walletAddr);
-    let ret = new Map<string, bigint>();
-    for (const tokenAddr of tokenAddrs) {
-      const tokenAccountKey = getAssociatedTokenAddressSync(new PublicKey(tokenAddr), walletKey);
-      try {
-        const resp = await this.#conn.getTokenAccountBalance(tokenAccountKey);
-        ret.set(tokenAddr, BigInt(resp.value.amount));
-      } catch (e) {
-        ret.set(tokenAddr, 0n);
+  /**
+   * List tokens.
+   */
+  async listTokensWithBalance(walletAddr: string, tokenAddrs: string[], storage?: IStorage): Promise<ITokenWithBalance[]> {
+    if (tokenAddrs.length > 30) {
+      throw new Error('Too many token addresses in a row');
+    }
+
+    let results = [];
+
+    const ownerKey = new PublicKey(walletAddr);
+    let mintAtaList: [PublicKey, PublicKey, PublicKey][] = [];
+    for (const t of tokenAddrs) {
+      const mintKey = new PublicKey(t);
+      const ataKey = getAssociatedTokenAddressSync(mintKey, ownerKey);
+      const [metadataKey] = PublicKey.findProgramAddressSync(
+        [Buffer.from('metadata', 'utf8'), METAPLEX_PROGRAM_ID.toBuffer(), mintKey.toBuffer()],
+        METAPLEX_PROGRAM_ID
+      );
+      mintAtaList.push([mintKey, ataKey, metadataKey]);
+    }
+
+    const accountInfos = await this.#conn.getMultipleAccountsInfo(mintAtaList.flat())
+    for (let i = 0; i < mintAtaList.length; i++) {
+      const mintKey = mintAtaList[i][0];
+      const mintAccount = accountInfos[3 * i];
+      const ataAccount = accountInfos[3 * i + 1];
+      const metadataAccount = accountInfos[3 * i + 2];
+
+      let addr = mintKey.toBase58();
+      let decimals: number | undefined = undefined;
+      let name: string | undefined = undefined;
+      let symbol: string | undefined = undefined;
+      let icon: string | undefined = undefined;
+      let balance: bigint = 0n;
+
+      if (mintAccount) {
+        const m = MintLayout.decode(mintAccount.data);
+        decimals = m.decimals;
+      }
+
+      if (metadataAccount) {
+        [name, symbol, icon] = await this.parseTokenMetadata(addr, metadataAccount);
+      }
+
+      if (ataAccount) {
+        const acc = AccountLayout.decode(ataAccount.data);
+        balance = acc.amount;
+      }
+
+      console.log(addr, decimals, name, symbol, icon, balance);
+
+      if (decimals !== undefined
+        && name !== undefined
+        && symbol !== undefined
+        && icon !== undefined
+      ) {
+        results.push(new TokenWithBalance({ addr, name, symbol, icon, decimals }, balance));
       }
     }
-    return ret;
+
+    return results;
   }
 
   async getNft(addr: string | PublicKey, storage?: IStorage): Promise<INft | undefined> {
@@ -615,17 +778,6 @@ export class SolanaTransport implements ITransport {
     }
   }
 
-  async _getRecipientState(recipientAccountKey: PublicKey): Promise<RecipientState | undefined> {
-    const conn = this.#conn;
-    const recipientAccount = await conn.getAccountInfo(recipientAccountKey);
-    if (recipientAccount !== null) {
-      const data = recipientAccount.data;
-      return RecipientState.deserialize(data);
-    } else {
-      return undefined;
-    }
-  }
-
   async _getMultiGameStates(gameAccountKeys: PublicKey[]): Promise<Array<GameState | undefined>> {
     const conn = this.#conn;
     const accountsInfo = await conn.getMultipleAccountsInfo(gameAccountKeys);
@@ -650,6 +802,17 @@ export class SolanaTransport implements ITransport {
     return ret;
   }
 
+  async _getRecipientState(recipientKey: PublicKey): Promise<RecipientState | undefined> {
+    const conn = this.#conn;
+    const recipientAccount = await conn.getAccountInfo(recipientKey);
+    if (recipientAccount !== null) {
+      const data = recipientAccount.data;
+      return RecipientState.deserialize(data);
+    } else {
+      return undefined;
+    }
+  }
+
   async _getRegState(regKey: PublicKey): Promise<RegistryState | undefined> {
     const conn = this.#conn;
     const regAccount = await conn.getAccountInfo(regKey);
@@ -674,11 +837,24 @@ export class SolanaTransport implements ITransport {
   }
 }
 
-async function makeTransaction(conn: Connection, feePayer: PublicKey): Promise<Transaction> {
-  const { blockhash, lastValidBlockHeight } = await conn.getLatestBlockhash();
-  return new Transaction({
-    feePayer,
-    blockhash,
-    lastValidBlockHeight,
-  });
+async function makeTransaction(
+  conn: Connection,
+  feePayer: PublicKey,
+  instructions: TransactionInstruction[]
+): Promise<VersionedTransaction> {
+  const slot = await conn.getSlot();
+  const block = await conn.getBlock(slot, { maxSupportedTransactionVersion: 0, transactionDetails: 'none' });
+  if (block === null) {
+    throw new Error('Cannot find block');
+  }
+
+  const messageV0 = new TransactionMessage({
+    payerKey: feePayer,
+    recentBlockhash: block.blockhash,
+    instructions
+  }).compileToV0Message();
+
+  const transaction = new VersionedTransaction(messageV0);
+
+  return transaction;
 }
diff --git a/js/sdk-solana/src/solana-wallet.ts b/js/sdk-solana/src/solana-wallet.ts
index 70ee4cba..aedb0e14 100644
--- a/js/sdk-solana/src/solana-wallet.ts
+++ b/js/sdk-solana/src/solana-wallet.ts
@@ -16,12 +16,12 @@ export class SolanaWalletAdapter implements IWallet {
     this.#wallet = wallet;
   }
 
-  async sendTransaction(tx: TransactionInstruction, conn: Connection): Promise<TransactionResult<void>> {
+  async sendTransaction(tx: TransactionInstruction, conn: Connection, config?: any): Promise<TransactionResult<void>> {
     const {
-      context: { slot: minContextSlot },
       value: { blockhash, lastValidBlockHeight },
     } = await conn.getLatestBlockhashAndContext();
-    const signature: TransactionSignature = await this.#wallet.sendTransaction(tx, conn, { minContextSlot });
+
+    const signature: TransactionSignature = await this.#wallet.sendTransaction(tx, conn, config);
     const resp = await conn.confirmTransaction({ blockhash, lastValidBlockHeight, signature });
     if (resp.value.err !== null) {
       return {
diff --git a/js/sdk-solana/tests/accounts.spec.ts b/js/sdk-solana/tests/accounts.spec.ts
index 948874cf..38869339 100644
--- a/js/sdk-solana/tests/accounts.spec.ts
+++ b/js/sdk-solana/tests/accounts.spec.ts
@@ -10,8 +10,8 @@ import {
   Vote,
 } from '../src/accounts';
 import { PublicKey } from '@solana/web3.js';
-import { ACCOUNT_DATA, REG_ACCOUNT_DATA } from './account_data';
-import { EntryType, EntryTypeCash } from '@race-foundation/sdk-core';
+import { REG_ACCOUNT_DATA } from './account_data';
+import { EntryTypeCash } from '@race-foundation/sdk-core';
 
 describe('Test account data serialization', () => {
   it('PlayerState', () => {
@@ -127,7 +127,6 @@ describe('Test account data serialization', () => {
       }),
       recipientAddr: PublicKey.unique(),
       checkpoint: Uint8Array.of(1, 2, 3, 4),
-      checkpointAccessVersion: BigInt(2),
     });
     let buf = state.serialize();
     let deserialized = GameState.deserialize(buf);
diff --git a/js/sdk-solana/tsfmt.json b/js/sdk-solana/tsfmt.json
index ac46672c..5823aaa0 120000
--- a/js/sdk-solana/tsfmt.json
+++ b/js/sdk-solana/tsfmt.json
@@ -1 +1 @@
-/home/tianshu/workspace/race/js/config/tsfmt.json
\ No newline at end of file
+../config/tsfmt.json
\ No newline at end of file
diff --git a/legacy/sdk/Cargo.toml b/legacy/sdk/Cargo.toml
deleted file mode 100644
index 5c7cb085..00000000
--- a/legacy/sdk/Cargo.toml
+++ /dev/null
@@ -1,33 +0,0 @@
-[package]
-name = "race-sdk"
-version = "0.1.0"
-edition = "2021"
-
-[lib]
-# crate-type = ["cdylib", "rlib"]
-crate-type = ["cdylib"]
-
-[dependencies]
-race-core = { path = "../core" }
-race-client = { path = "../client" }
-race-encryptor = { path = "../encryptor" }
-race-transport = { path = "../transport" }
-web-sys = { workspace = true, features = ["Worker", "MessageEvent"] }
-jsonrpsee = { workspace = true, features = ["wasm-client"] }
-getrandom = { workspace = true, features = ["js"] }
-gloo = { workspace = true }
-anyhow = { workspace = true }
-serde_json = { workspace = true }
-serde = { workspace = true }
-borsh = { workspace = true }
-thiserror = { workspace = true }
-futures = { workspace = true }
-wasm-bindgen = { workspace = true }
-wasm-bindgen-futures = { workspace = true }
-js-sys = { workspace = true }
-async-stream = { workspace = true }
-async-trait = { workspace = true }
-base64 = { workspace = true }
-
-[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = { workspace = true }
diff --git a/legacy/sdk/package.json.patch b/legacy/sdk/package.json.patch
deleted file mode 100644
index dbc5ce72..00000000
--- a/legacy/sdk/package.json.patch
+++ /dev/null
@@ -1,9 +0,0 @@
---- pkg/package.json	2023-02-19 16:24:39.337640017 +0800
-+++ new_package.json	2023-02-19 16:24:18.734250615 +0800
-@@ -1,5 +1,6 @@
- {
-   "name": "race-sdk",
-+  "main": "./race_sdk.js",
-   "version": "0.1.0",
-   "files": [
-     "race_sdk_bg.wasm",
diff --git a/legacy/sdk/src/app_client.rs b/legacy/sdk/src/app_client.rs
deleted file mode 100644
index 50845954..00000000
--- a/legacy/sdk/src/app_client.rs
+++ /dev/null
@@ -1,395 +0,0 @@
-//! A common client to use in dapp(native version).
-
-use gloo::utils::format::JsValueSerdeExt;
-use js_sys::JSON::{parse, stringify};
-use js_sys::{Function, Object, Reflect};
-use jsonrpsee::core::client::Subscription;
-use race_core::context::GameContext;
-use race_core::prelude::{DecisionId, InitAccount};
-use race_core::types::{BroadcastFrame, ExitGameParams, GameAccount, RandomId};
-use wasm_bindgen::prelude::*;
-use race_transport::wasm_trait::TransportLocalT;
-
-use futures::pin_mut;
-use futures::stream::StreamExt;
-use std::cell::RefCell;
-use std::sync::Arc;
-
-use crate::connection::Connection;
-use crate::handler::Handler;
-use crate::transport::Transport;
-use crate::utils::rget;
-use gloo::console::{debug, error, info, warn};
-
-use crate::error::Result;
-use crate::js::{Event as JsEvent, JsGameContext};
-use race_client::Client;
-use race_core::{
-    connection::ConnectionT,
-    error::Error,
-    event::Event,
-    types::{ClientMode, GetStateParams, JoinParams, SubmitEventParams},
-};
-use race_encryptor::Encryptor;
-
-#[wasm_bindgen]
-pub struct AppClient {
-    addr: String,
-    client: Client,
-    handler: Handler,
-    wallet: JsValue,
-    transport: Arc<Transport>,
-    connection: Arc<Connection>,
-    game_context: RefCell<GameContext>,
-    init_game_account: RefCell<Option<GameAccount>>,
-    event_sub: RefCell<Option<Subscription<BroadcastFrame>>>,
-    callback: Function,
-}
-
-#[wasm_bindgen]
-impl AppClient {
-    /// Try initialize an app client, which will connect to transactor and blockchain RPC.
-    ///
-    /// # Arguments
-    /// * `chain`, The name of blockchain, currently only `"facade"` is supported.
-    /// * `rpc`, The endpoint of blockchain RPC.
-    /// * `player_addr`, The address of current player.
-    /// * `game_addr`, The address of game to attach.
-    /// * `callback`, A JS function: function(addr: String, context: PartialGameContext, state: GameState).
-    ///   This function will be called when either game context or game state is updated.
-    ///   The `addr` belong to either the game or its sub game.
-    #[wasm_bindgen]
-    pub async fn try_init(
-        transport: JsValue,
-        wallet: JsValue,
-        game_addr: &str,
-        callback: Function,
-    ) -> Result<AppClient> {
-        let transport = Arc::new(Transport::new(transport));
-        AppClient::try_new(transport, wallet, game_addr, callback).await
-    }
-
-    async fn try_new(
-        transport: Arc<Transport>,
-        wallet: JsValue,
-        game_addr: &str,
-        callback: Function,
-    ) -> Result<Self> {
-        let encryptor = Arc::new(Encryptor::default());
-        info!("WASM: Encryptor created");
-        info!(&wallet);
-        let player_addr = rget(&wallet, "walletAddr").as_string().unwrap();
-        info!("WASM: Player addr got");
-        let game_account = transport
-            .get_game_account(game_addr)
-            .await?
-            .ok_or(Error::GameAccountNotFound)?;
-        info!("WASM: Game account loaded");
-        let game_bundle = transport
-            .get_game_bundle(&game_account.bundle_addr)
-            .await?
-            .ok_or(Error::GameBundleNotFound)?;
-        info!("WASM: Game bundle loaded");
-        let transactor_addr = game_account
-            .transactor_addr
-            .as_ref()
-            .ok_or(Error::GameNotServed)?;
-        info!("WASM: Game is served");
-        let transactor_account = transport
-            .get_server_account(transactor_addr)
-            .await?
-            .ok_or(Error::CantFindTransactor)?;
-        info!("WASM: Transactor account loaded");
-        let connection = Arc::new(
-            Connection::try_new(
-                &player_addr,
-                &transactor_account.endpoint,
-                encryptor.clone(),
-            )
-            .await?,
-        );
-        info!("WASM: Connection initialized");
-        let client = Client::new(
-            player_addr.to_owned(),
-            game_addr.to_owned(),
-            ClientMode::Player,
-            transport.clone(),
-            encryptor.clone(),
-            connection.clone(),
-        );
-        info!("WASM: Game client created");
-
-        let handler = Handler::from_bundle(game_bundle, encryptor).await?;
-
-        let game_context = RefCell::new(GameContext::try_new(&game_account)?);
-
-        Ok(Self {
-            addr: game_addr.to_owned(),
-            client,
-            wallet,
-            transport,
-            connection,
-            handler,
-            game_context,
-            init_game_account: RefCell::new(Some(game_account)),
-            callback,
-            event_sub: RefCell::new(None),
-        })
-    }
-
-    fn invoke_callback(&self, game_context: &GameContext, event: Option<Event>) -> Result<()> {
-        let state = parse(game_context.get_handler_state_raw()).or(Err(Error::JsonParseError))?;
-
-        let context = JsGameContext::from_context(&game_context);
-        let event_js: JsValue = if let Some(event) = event {
-            let event = JsEvent::from(event);
-            event.into()
-        } else {
-            JsValue::UNDEFINED
-        };
-
-        let r = Function::call3(
-            &self.callback,
-            &JsValue::NULL,
-            &JsValue::from_serde(&context).or(Err(Error::JsonParseError))?,
-            &state,
-            &event_js,
-        );
-        if let Err(e) = r {
-            error!(format!("WASM: Callback error, {:?}", e));
-        }
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn get_profile(&self, addr: &str) -> Result<Option<JsValue>> {
-        if let Some(p) = self.transport.get_player_profile(addr).await? {
-            Ok(Some(JsValue::from_serde(&p).unwrap()))
-        } else {
-            Ok(None)
-        }
-    }
-
-    #[wasm_bindgen]
-    /// Attach to game account on chain and connect to the event
-    /// streams.  The event stream will start from a
-    /// checkpoint(settle_version).  We will receive event hhistories
-    /// once the connection is established.
-    pub async fn attach_game(&self) -> Result<()> {
-        let mut init_game_account = self.init_game_account.borrow_mut();
-        if init_game_account.is_none() {
-            return Err(Error::DuplicatedInitialization)?;
-        }
-        info!("WASM: Attach to game");
-        self.client.attach_game().await?;
-        let settle_version = self.game_context.borrow().get_settle_version();
-
-        debug!(
-            "WASM: Subscribe event stream, use settle_version = {} as check point",
-            settle_version
-        );
-
-        let sub = self
-            .connection
-            .subscribe_events(&self.addr, settle_version)
-            .await?;
-
-        pin_mut!(sub);
-        debug!("WASM: Event stream connected");
-
-        while let Some(Ok(frame)) = sub.next().await {
-            match frame {
-                BroadcastFrame::Init {
-                    access_version,
-                    settle_version,
-                    ..
-                } => {
-                    let mut game_context = self.game_context.borrow_mut();
-                    let game_account = std::mem::replace(&mut *init_game_account, None)
-                        .ok_or(Error::DuplicatedInitialization)?;
-
-                    info!(format!(
-                        "WASM: Apply checkpoint, access_version = {}, settle_version = {}",
-                        access_version, settle_version
-                    ));
-
-                    game_context.apply_checkpoint(access_version, settle_version)?;
-
-                    let init_account =
-                        InitAccount::new(game_account, access_version, settle_version);
-                    match self.handler.init_state(&mut game_context, &init_account) {
-                        Ok(_) => {
-                            self.invoke_callback(&game_context, None)?;
-                        }
-                        Err(Error::WasmExecutionError(e)) => {
-                            error!(format!("WASM: Initiate state error: {:?}", e))
-                        }
-                        Err(e) => {
-                            warn!("WASM: Init state failed, {}", e.to_string())
-                        }
-                    }
-                }
-                BroadcastFrame::Event {
-                    event, timestamp, ..
-                } => {
-                    let mut game_context = self.game_context.borrow_mut();
-                    game_context.set_timestamp(timestamp);
-                    match self.handler.handle_event(&mut game_context, &event) {
-                        Ok(_) => {
-                            self.invoke_callback(&game_context, Some(event))?;
-                        }
-                        Err(Error::WasmExecutionError(e)) => {
-                            error!(format!("WASM: Handle event error: {:?}", e))
-                        }
-                        Err(e) => {
-                            warn!(format!("WASM: Discard event [{}] due to: [{:?}]", event, e));
-                        }
-                    }
-                }
-            }
-        }
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn submit_event(&self, val: JsValue) -> Result<()> {
-        info!(format!("WASM: Submit event: {:?}", val));
-        let raw = stringify(&val)
-            .or(Err(Error::JsonParseError))?
-            .as_string()
-            .ok_or(Error::JsonParseError)?;
-        let event = Event::Custom {
-            sender: self.client.addr.clone(),
-            raw,
-        };
-        self.connection
-            .submit_event(&self.addr, SubmitEventParams { event })
-            .await?;
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    /// Get all revealed information.  This function contains the
-    /// decryption, so it's better to cache the result somewhere.
-    pub fn get_revealed(&self, random_id: RandomId) -> Result<JsValue> {
-        let context = self.game_context.borrow();
-        let decrypted = self.client.decrypt(&context, random_id)?;
-        let obj = Object::new();
-        for (k, v) in decrypted.iter() {
-            Reflect::set(&obj, &(*k as u32).into(), &v.into()).unwrap();
-        }
-        Ok(JsValue::from(obj))
-    }
-
-    #[wasm_bindgen]
-    pub async fn answer(&mut self, decision_id: DecisionId, value: String) -> Result<()> {
-        self.client.answer(decision_id, value).await?;
-        Ok(())
-    }
-
-    /// Get current game state.
-    pub async fn get_state(&self) -> Result<JsValue> {
-        let state: String = self
-            .connection
-            .get_state(&self.addr, GetStateParams {})
-            .await?;
-        Ok(parse(&state).map_err(|_| Error::JsonParseError)?)
-    }
-
-    /// Join the game.
-    #[wasm_bindgen]
-    pub async fn join(&self, amount: u64) -> Result<()> {
-        info!("WASM: Join game");
-        let game_account = self
-            .transport
-            .get_game_account(&self.addr)
-            .await?
-            .ok_or(Error::GameAccountNotFound)?;
-        let count: u16 = game_account.players.len() as _;
-
-        info!(format!("WASM: player number = {}", count));
-        if game_account.max_players <= count {
-            return Err(Error::GameIsFull(count as _))?;
-        }
-
-        let mut position: Option<u16> = None;
-        for i in 0..game_account.max_players {
-            if game_account.players.iter().all(|p| p.position != i) {
-                position = Some(i as _);
-                break;
-            }
-        }
-
-        let position = position.ok_or(Error::GameIsFull(count as _))?;
-        info!(format!("WASM: player position = {}", position));
-
-        info!(format!("WASM: join amount = {}", amount));
-        self.transport
-            .join(
-                &self.wallet,
-                JoinParams {
-                    game_addr: self.addr.clone(),
-                    amount,
-                    access_version: game_account.access_version,
-                    position: position as _,
-                },
-            )
-            .await?;
-
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn exit(&self) -> Result<()> {
-        info!("WASM: Exit game");
-        self.connection
-            .exit_game(&self.addr, ExitGameParams {})
-            .await?;
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn close(&self) -> Result<()> {
-        self.exit().await?;
-        if let Some(event_sub) = self.event_sub.replace(None) {
-            event_sub.unsubscribe().await?;
-        }
-        info!("WASM: App client closed");
-        Ok(())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-
-    use super::*;
-    use gloo::console::info;
-    use serde_json::json;
-    use wasm_bindgen_test::*;
-
-    wasm_bindgen_test_configure!(run_in_browser);
-
-    #[wasm_bindgen_test]
-    async fn test_client() {
-        let client = AppClient::try_init(
-            "facade",
-            "ws://localhost:12002",
-            "Alice",
-            "COUNTER_GAME_ADDRESS",
-            // Function::default(),
-        )
-        .await
-        .map_err(JsValue::from)
-        .expect("Failed to create client");
-
-        info!("Client created");
-
-        client.attach_game().await;
-
-        // let state = client
-        //     .get_state()
-        //     .await
-        //     .map_err(JsValue::from)
-        //     .expect("Failed to get state");
-    }
-}
diff --git a/legacy/sdk/src/app_helper.rs b/legacy/sdk/src/app_helper.rs
deleted file mode 100644
index 45c24c61..00000000
--- a/legacy/sdk/src/app_helper.rs
+++ /dev/null
@@ -1,192 +0,0 @@
-//! A common client to use in dapp(native version).
-
-use gloo::console::info;
-use gloo::{console::warn, utils::format::JsValueSerdeExt};
-use js_sys::Array;
-use js_sys::{Object, Uint8Array};
-use race_core::types::CreatePlayerProfileParams;
-use race_transport::TransportLocalT;
-use wasm_bindgen::prelude::*;
-
-use crate::error::Result;
-use crate::js::{rget, rget_string, rget_u16, rget_u64};
-use crate::transport::Transport;
-use race_core::{
-    error::Error,
-    types::{CreateGameAccountParams, RegisterGameParams},
-};
-
-#[wasm_bindgen]
-pub struct AppHelper {
-    transport: Transport,
-}
-
-#[wasm_bindgen]
-impl AppHelper {
-    /// Try initialize an app helper which provides out game functionalities.
-    ///
-    /// # Arguments
-    /// * `chain`, The name of blockchain, currently only `facade` is supported.
-    /// * `rpc`, The endpoint of blockchain RPC.
-    #[wasm_bindgen]
-    pub async fn try_init(transport: JsValue) -> Result<AppHelper> {
-        let transport = Transport::new(transport);
-        Ok(AppHelper { transport })
-    }
-
-    #[wasm_bindgen]
-    pub async fn get_game_account(&self, game_addr: &str) -> Result<JsValue> {
-        let game_account = self.transport.get_game_account(game_addr).await?;
-        Ok(JsValue::from_serde(&game_account).or(Err(Error::JsonParseError))?)
-    }
-
-    #[wasm_bindgen]
-    pub async fn create_game_account(&self, wallet: &JsValue, opts: &Object) -> Result<String> {
-        let title = rget_string(opts, "title")?;
-        let token_addr = rget_string(opts, "token_addr")?;
-        let bundle_addr = rget_string(opts, "bundle_addr")?;
-        let max_players = rget_u16(opts, "max_players")?;
-        let data: Uint8Array = rget(opts, "data")?;
-        let min_deposit = rget_u64(opts, "min_deposit")?;
-        let max_deposit = rget_u64(opts, "max_deposit")?;
-        let addr = self
-            .transport
-            .create_game_account(
-                wallet,
-                CreateGameAccountParams {
-                    title,
-                    bundle_addr,
-                    token_addr,
-                    max_players,
-                    data: data.to_vec(),
-                    max_deposit,
-                    min_deposit,
-                },
-            )
-            .await?;
-        Ok(addr)
-    }
-
-    #[wasm_bindgen]
-    pub async fn register_game(
-        &self,
-        wallet: &JsValue,
-        game_addr: &str,
-        reg_addr: &str,
-    ) -> Result<()> {
-        self.transport
-            .register_game(
-                wallet,
-                RegisterGameParams {
-                    game_addr: game_addr.to_owned(),
-                    reg_addr: reg_addr.to_owned(),
-                },
-            )
-            .await?;
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn create_profile(&self, wallet: JsValue, nick: &str, pfp: &str) -> Result<()> {
-        let pfp = if pfp.eq("") {
-            None
-        } else {
-            Some(pfp.to_owned())
-        };
-        info!(format!("Create profile, nick: {}, pfp: {:?}", nick, pfp));
-        self.transport
-            .create_player_profile(
-                &wallet,
-                CreatePlayerProfileParams {
-                    nick: nick.to_owned(),
-                    pfp,
-                },
-            )
-            .await?;
-        info!(format!("Profile created"));
-        Ok(())
-    }
-
-    #[wasm_bindgen]
-    pub async fn get_profile(&self, addr: &str) -> Result<Option<JsValue>> {
-        if let Some(p) = self.transport.get_player_profile(addr).await? {
-            Ok(Some(JsValue::from_serde(&p).unwrap()))
-        } else {
-            Ok(None)
-        }
-    }
-
-    #[wasm_bindgen]
-    pub async fn list_games(&self, registration_addrs: Box<[JsValue]>) -> Result<Array> {
-        let games = Array::new();
-        for reg_addr in registration_addrs.into_iter() {
-            if let Some(reg_addr) = JsValue::as_string(reg_addr) {
-                info!(format!("Reg addr: {:?}", reg_addr));
-                if let Some(reg) = self.transport.get_registration(&reg_addr).await? {
-                    info!(format!("Games: {:?}", reg));
-                    for game in reg.games {
-                        games.push(&JsValue::from_serde(&game).unwrap());
-                    }
-                } else {
-                    warn!(format!("Registration account {} not found!", reg_addr));
-                }
-            }
-        }
-        Ok(games)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-
-    use super::*;
-    use serde_json::json;
-    use wasm_bindgen_test::*;
-    use web_sys::console::log_1;
-
-    wasm_bindgen_test_configure!(run_in_browser);
-
-    #[wasm_bindgen_test]
-    async fn test_helper_get_game() {
-        let app_helper = AppHelper::try_init("facade", "ws://localhost:12002")
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-        let game_account = app_helper
-            .get_game_account("COUNTER_GAME_ADDRESS")
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-        log_1(&game_account);
-    }
-
-    #[wasm_bindgen_test]
-    async fn test_helper_create_game() {
-        let app_helper = AppHelper::try_init("facade", "ws://localhost:12002")
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-        let data = Uint8Array::new_with_length(8);
-        data.copy_from(&[1u8; 8]);
-
-        let addr = app_helper
-            .create_game_account("COUNTER_BUNDLE_ADDRESS".into(), 10, data)
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-        log_1(&JsValue::from_str(&addr));
-
-        let game_account = app_helper
-            .get_game_account(&addr)
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-        log_1(&game_account);
-
-        app_helper
-            .register_game(&addr, "DEFAULT_REGISTRATION_ADDRESS")
-            .await
-            .map_err(JsValue::from)
-            .unwrap();
-    }
-}
diff --git a/legacy/sdk/src/connection.rs b/legacy/sdk/src/connection.rs
deleted file mode 100644
index 226c0c87..00000000
--- a/legacy/sdk/src/connection.rs
+++ /dev/null
@@ -1,170 +0,0 @@
-//! The connection to transactor.
-
-use std::sync::Arc;
-
-use async_trait::async_trait;
-use futures::lock::Mutex;
-use gloo::console::{info, warn};
-use jsonrpsee::{
-    core::client::{Client, ClientT, Subscription, SubscriptionClientT},
-    rpc_params,
-    wasm_client::WasmClientBuilder,
-};
-use race_core::{
-    connection::ConnectionT,
-    encryptor::EncryptorT,
-    error::{Error, Result},
-    types::{
-        AttachGameParams, BroadcastFrame, ExitGameParams, GetStateParams, SubmitEventParams,
-        SubscribeEventParams,
-    },
-};
-use race_encryptor::Encryptor;
-use serde::{de::DeserializeOwned, Serialize};
-
-pub struct Connection {
-    player_addr: String,
-    endpoint: String,
-    encryptor: Arc<Encryptor>,
-    rpc_client: Arc<Mutex<Client>>,
-    max_retries: u32,
-}
-
-async fn build_rpc_client(endpoint: &str) -> Result<Client> {
-    WasmClientBuilder::default()
-        .build(endpoint)
-        .await
-        .map_err(|e| Error::RpcError(e.to_string()))
-}
-
-#[async_trait]
-impl ConnectionT for Connection {
-    async fn attach_game(&self, game_addr: &str, params: AttachGameParams) -> Result<()> {
-        self.request("attach_game", game_addr, params).await
-    }
-
-    async fn submit_event(&self, game_addr: &str, params: SubmitEventParams) -> Result<()> {
-        self.request("submit_event", game_addr, params).await
-    }
-
-    async fn exit_game(&self, game_addr: &str, params: ExitGameParams) -> Result<()> {
-        self.request("exit_game", game_addr, params).await
-    }
-}
-
-impl Connection {
-    pub async fn try_new(
-        player_addr: &str,
-        endpoint: &str,
-        encryptor: Arc<Encryptor>,
-    ) -> Result<Self> {
-        info!(format!(
-            "Establish connection to transactor at {}",
-            endpoint
-        ));
-        let rpc_client = Arc::new(Mutex::new(build_rpc_client(endpoint).await?));
-        let max_retries = 3;
-        Ok(Self {
-            player_addr: player_addr.into(),
-            endpoint: endpoint.into(),
-            encryptor,
-            rpc_client,
-            max_retries,
-        })
-    }
-
-    async fn request<P, R>(&self, method: &str, game_addr: &str, params: P) -> Result<R>
-    where
-        P: Serialize + ToString,
-        R: DeserializeOwned,
-    {
-        let mut retried = 0;
-        let message = format!("{}{}", game_addr, params.to_string());
-        // info!("Message to encrypt: {}", &message);
-        let mut rpc_client = self.rpc_client.lock().await;
-        loop {
-            let signature = self
-                .encryptor
-                .sign(message.as_bytes(), self.player_addr.clone())?;
-            let result = rpc_client
-                .request(method, rpc_params![game_addr, &params, signature])
-                .await;
-            use jsonrpsee::core::error::Error::*;
-            match result {
-                Ok(ret) => return Ok(ret),
-                Err(RestartNeeded(_)) => {
-                    warn!("Disconnected with transactor, will reconnect.");
-                    *rpc_client = build_rpc_client(&self.endpoint).await?;
-                    continue;
-                }
-                Err(RequestTimeout) => {
-                    if retried < self.max_retries {
-                        retried += 1;
-                        continue;
-                    } else {
-                        return Err(Error::RpcError(RequestTimeout.to_string()));
-                    }
-                }
-                Err(Call(jsonrpsee::types::error::CallError::Failed(e))) => {
-                    warn!("RPC CallError due to", e.to_string());
-                    match e.downcast_ref::<Error>() {
-                        Some(Error::GameNotLoaded) => {}
-                        Some(e) => {
-                            return Err(e.to_owned());
-                        }
-                        None => {
-                            unreachable!();
-                        }
-                    }
-                }
-                Err(e) => {
-                    warn!("RPC Call failed due to", e.to_string());
-                    return Err(Error::RpcError(e.to_string()));
-                }
-            }
-        }
-    }
-
-    pub async fn get_state<R>(&self, game_addr: &str, params: GetStateParams) -> Result<R>
-    where
-        R: DeserializeOwned,
-    {
-        self.request("get_state", game_addr, params).await
-    }
-
-    pub async fn subscribe_events(
-        &self,
-        game_addr: &str,
-        settle_version: u64,
-        // ) -> Result<impl Stream<Item = BroadcastFrame>> {
-    ) -> Result<Subscription<BroadcastFrame>> {
-        let params = SubscribeEventParams { settle_version };
-        let message = format!("{}{}", game_addr, params.to_string());
-        let signature = self
-            .encryptor
-            .sign(message.as_bytes(), self.player_addr.clone())?;
-
-        let sub = self
-            .rpc_client
-            .lock()
-            .await
-            .subscribe(
-                "subscribe_event",
-                rpc_params![game_addr, params, signature],
-                "unsubscribe_event",
-            )
-            .await
-            .map_err(|e| Error::RpcError(e.to_string()))?;
-
-        Ok(sub)
-        // Ok(stream! {
-        //     for await frame in sub {
-        //         if let Ok(frame) = frame {
-        //             yield frame;
-        //         } else {
-        //             break;
-        //         }
-        //     }
-        // })
-    }
-}
diff --git a/legacy/sdk/src/error.rs b/legacy/sdk/src/error.rs
deleted file mode 100644
index bb0e389f..00000000
--- a/legacy/sdk/src/error.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-use gloo::console::error;
-use race_transport::error::TransportError;
-use thiserror::Error;
-use wasm_bindgen::prelude::*;
-
-#[derive(Error, Debug)]
-#[allow(unused)]
-pub enum SdkError {
-    #[error("JS invocation error: {0}")]
-    InteropError(String),
-
-    #[error("Transport error: {0}")]
-    TransportError(String),
-
-    #[error("Connection(with transactor) error: {0}")]
-    ConnectionError(String),
-
-    #[error("Parse error: {0}")]
-    ParseError(String),
-
-    #[error("Internal error: {0}")]
-    InternalError(String),
-}
-
-impl From<race_core::error::Error> for SdkError {
-    fn from(value: race_core::error::Error) -> Self {
-        Self::InternalError(value.to_string())
-    }
-}
-
-impl From<SdkError> for TransportError {
-    fn from(value: SdkError) -> Self {
-        gloo::console::error!("An error occurred in transport:", value.to_string());
-        TransportError::InteropError
-    }
-}
-
-pub type Result<T> = std::result::Result<T, JsError>;
diff --git a/legacy/sdk/src/handler.rs b/legacy/sdk/src/handler.rs
deleted file mode 100644
index 4bb3c6dc..00000000
--- a/legacy/sdk/src/handler.rs
+++ /dev/null
@@ -1,212 +0,0 @@
-#![cfg(target_arch = "wasm32")]
-
-use std::mem::swap;
-use std::sync::Arc;
-
-use borsh::{BorshDeserialize, BorshSerialize};
-use race_core::context::GameContext;
-use race_core::effect::Effect;
-use race_core::encryptor::EncryptorT;
-use race_core::engine::{general_handle_event, general_init_state, post_handle_event, InitAccount};
-use race_core::error::{Error, Result};
-
-use js_sys::WebAssembly::{Instance, Memory};
-use js_sys::{Function, Object, Reflect, Uint8Array, WebAssembly};
-use race_core::event::Event;
-use race_core::types::GameBundle;
-use wasm_bindgen::{JsCast, JsValue};
-use wasm_bindgen_futures::JsFuture;
-
-pub struct Handler {
-    pub instance: Instance,
-    pub encryptor: Arc<dyn EncryptorT>,
-}
-
-impl Handler {
-    pub async fn from_bundle(game_bundle: GameBundle, encryptor: Arc<dyn EncryptorT>) -> Result<Self> {
-        let buffer = game_bundle.data;
-        let mem_descriptor = Object::new();
-        Reflect::set(&mem_descriptor, &"shared".into(), &true.into()).map_err(|_| {
-            Error::WasmInitializationError("Failed to create mem descriptor".into())
-        })?;
-        Reflect::set(&mem_descriptor, &"maximum".into(), &100.into()).map_err(|_| {
-            Error::WasmInitializationError("Failed to create mem descriptor".into())
-        })?;
-        Reflect::set(&mem_descriptor, &"initial".into(), &100.into()).map_err(|_| {
-            Error::WasmInitializationError("Failed to create mem descriptor".into())
-        })?;
-        let memory = WebAssembly::Memory::new(&mem_descriptor).map_err(|_| {
-            Error::WasmInitializationError("Failed to get WASM memory object".into())
-        })?;
-        let import_obj = Object::new();
-        Reflect::set(&import_obj, &"memory".into(), &memory).map_err(|_| {
-            Error::WasmInitializationError("Failed to set WASM memory object".into())
-        })?;
-        let a = JsFuture::from(WebAssembly::instantiate_buffer(&buffer, &import_obj))
-            .await
-            .map_err(|_| Error::WasmInitializationError("Failed to instantiate buffer".into()))?;
-        let instance: Instance = Reflect::get(&a, &"instance".into())
-            .map_err(|_| Error::WasmInitializationError("Failed to get WASM instance".into()))?
-            .dyn_into()
-            .map_err(|_| Error::WasmInitializationError("Failed to get WASM instance".into()))?;
-        Ok(Self {
-            instance,
-            encryptor,
-        })
-    }
-
-    fn custom_init_state(
-        &self,
-        context: &mut GameContext,
-        init_account: &InitAccount,
-    ) -> Result<()> {
-        let exports = self.instance.exports();
-        let mem = Reflect::get(exports.as_ref(), &"memory".into())
-            .map_err(|_| Error::WasmExecutionError("Failed to get memory object".into()))?
-            .dyn_into::<Memory>()
-            .map_err(|_| Error::WasmExecutionError("Failed to get memory object".into()))?;
-        mem.grow(4);
-        let buf = Uint8Array::new(&mem.buffer());
-
-        // serialize effect
-        let mut effect = Effect::from_context(context);
-        let effect_vec = effect
-            .try_to_vec()
-            .map_err(|_| Error::WasmExecutionError("Failed to serialize effect".into()))?;
-        let effect_size = effect_vec.len();
-        let effect_arr = Uint8Array::new_with_length(effect_size as _);
-        effect_arr.copy_from(&effect_vec);
-
-        // serialize init_account
-        let init_account_vec = init_account
-            .try_to_vec()
-            .map_err(|_| Error::WasmExecutionError("Failed to serialize init_account".into()))?;
-        let init_account_size = init_account_vec.len();
-        let init_account_arr = Uint8Array::new_with_length(init_account_size as _);
-        init_account_arr.copy_from(&init_account_vec);
-
-        // copy effect and init_account into wasm memory
-        let mut offset = 1u32;
-        buf.set(&effect_arr, offset);
-        offset += effect_size as u32;
-        buf.set(&init_account_arr, offset);
-
-        // call event handler
-        let init_state = Reflect::get(exports.as_ref(), &"init_state".into())
-            .map_err(|_| Error::WasmExecutionError("Failed to resolve init_state function".into()))?
-            .dyn_into::<Function>()
-            .map_err(|_| {
-                Error::WasmExecutionError("Failed to resolve init_state function".into())
-            })?;
-
-        let new_effect_size = init_state
-            .call2(
-                &JsValue::undefined(),
-                &effect_size.into(),
-                &init_account_size.into(),
-            )
-            .map_err(|_| Error::WasmExecutionError("WASM invocation error".into()))?
-            .as_f64()
-            .ok_or(Error::WasmExecutionError(
-                "WASM result parsing error".into(),
-            ))?;
-
-        let new_effect_vec = Uint8Array::new(&mem.buffer()).to_vec();
-        let new_effect_slice = &new_effect_vec[1..(1 + new_effect_size as usize)];
-        effect = Effect::try_from_slice(&new_effect_slice)
-            .map_err(|_| Error::WasmExecutionError("Failed to deserialize effect".into()))?;
-
-        if let Some(e) = effect.__take_error() {
-            Err(e)
-        } else {
-            context.apply_effect(effect)
-        }
-    }
-
-    fn custom_handle_event(&self, context: &mut GameContext, event: &Event) -> Result<()> {
-        let exports = self.instance.exports();
-        let mem = Reflect::get(exports.as_ref(), &"memory".into())
-            .map_err(|_| Error::WasmExecutionError("Failed to get memory object".into()))?
-            .dyn_into::<Memory>()
-            .map_err(|_| Error::WasmExecutionError("Failed to get memory object".into()))?;
-        let buf = Uint8Array::new(&mem.buffer());
-
-        // serialize effect
-        let mut effect = Effect::from_context(context);
-        let effect_vec = effect
-            .try_to_vec()
-            .map_err(|_| Error::WasmExecutionError("Failed to serialize effect".into()))?;
-        let effect_size = effect_vec.len();
-        let effect_arr = Uint8Array::new_with_length(effect_size as _);
-        effect_arr.copy_from(&effect_vec);
-
-        // serialize event
-        let event_vec = event
-            .try_to_vec()
-            .map_err(|_| Error::WasmExecutionError("Failed to serialize event".into()))?;
-        let event_size = event_vec.len();
-        let event_arr = Uint8Array::new_with_length(event_size as _);
-        event_arr.copy_from(&event_vec);
-
-        // copy context and event into wasm memory
-        let mut offset = 1u32;
-        buf.set(&effect_arr, offset);
-        offset += effect_size as u32;
-        buf.set(&event_arr, offset);
-
-        // call event handler
-        let handle_event = Reflect::get(exports.as_ref(), &"handle_event".into())
-            .map_err(|_| {
-                Error::WasmExecutionError("Failed to resolve handle_event function".into())
-            })?
-            .dyn_into::<Function>()
-            .map_err(|_| {
-                Error::WasmExecutionError("Failed to resolve handle_event function".into())
-            })?;
-
-        let new_effect_size = handle_event
-            .call2(
-                &JsValue::undefined(),
-                &effect_size.into(),
-                &event_size.into(),
-            )
-            .map_err(|_| Error::WasmExecutionError("WASM invocation error".into()))?
-            .as_f64()
-            .ok_or(Error::WasmExecutionError(
-                "WASM result parsing error".into(),
-            ))?;
-
-        let new_effect_vec = Uint8Array::new(&mem.buffer()).to_vec();
-        let new_effect_slice = &new_effect_vec[1..(1 + new_effect_size as usize)];
-        effect = Effect::try_from_slice(&new_effect_slice)
-            .map_err(|_| Error::WasmExecutionError("Failed to deserialize effect".into()))?;
-
-        if let Some(e) = effect.__take_error() {
-            Err(e)
-        } else {
-            context.apply_effect(effect)
-        }
-    }
-
-    pub fn handle_event(&self, context: &mut GameContext, event: &Event) -> Result<()> {
-        let mut new_context = context.clone();
-        general_handle_event(&mut new_context, event, self.encryptor.as_ref())?;
-        self.custom_handle_event(&mut new_context, event)?;
-        post_handle_event(context, &mut new_context)?;
-        // TODO, the settlement is ignored
-        // We should start a independent task to verify the settlements on-chain
-        // Here we should send a verification job to the task
-        new_context.apply_and_take_settles()?;
-        // info!(format!("context: {:?}", new_context));
-        swap(context, &mut new_context);
-        Ok(())
-    }
-
-    pub fn init_state(&self, context: &mut GameContext, init_account: &InitAccount) -> Result<()> {
-        let mut new_context = context.clone();
-        general_init_state(&mut new_context, init_account)?;
-        self.custom_init_state(&mut new_context, init_account)?;
-        swap(context, &mut new_context);
-        Ok(())
-    }
-}
diff --git a/legacy/sdk/src/js.rs b/legacy/sdk/src/js.rs
deleted file mode 100644
index f546d14f..00000000
--- a/legacy/sdk/src/js.rs
+++ /dev/null
@@ -1,351 +0,0 @@
-use crate::error::Result;
-use gloo::utils::format::JsValueSerdeExt;
-use js_sys::{Object, Reflect, JSON::parse};
-use race_core::{
-    context::{GameContext, Player, Server},
-    types::PlayerJoin,
-};
-use serde::Serialize;
-use wasm_bindgen::JsValue;
-use wasm_bindgen::{prelude::*, JsCast};
-
-#[derive(Serialize)]
-pub struct JsPlayer<'a> {
-    pub addr: &'a str,
-    pub position: usize,
-    pub status: String,
-    pub balance: u64,
-}
-
-impl<'a> From<&'a Player> for JsPlayer<'a> {
-    fn from(value: &'a Player) -> Self {
-        Self {
-            addr: &value.addr,
-            position: value.position,
-            status: value.status.to_string(),
-            balance: value.balance,
-        }
-    }
-}
-
-#[derive(Serialize)]
-pub struct JsPlayerJoin<'a> {
-    pub addr: &'a str,
-    pub position: u16,
-    pub balance: u64,
-    pub access_version: u64,
-}
-
-impl<'a> From<&'a PlayerJoin> for JsPlayerJoin<'a> {
-    fn from(value: &'a PlayerJoin) -> Self {
-        Self {
-            addr: &value.addr,
-            position: value.position,
-            balance: value.balance,
-            access_version: value.access_version,
-        }
-    }
-}
-
-#[derive(Serialize)]
-pub struct JsServer<'a> {
-    pub addr: &'a str,
-    pub status: String,
-    pub endpoint: &'a str,
-}
-
-impl<'a> From<&'a Server> for JsServer<'a> {
-    fn from(value: &'a Server) -> Self {
-        Self {
-            addr: &value.addr,
-            status: value.status.to_string(),
-            endpoint: &value.endpoint,
-        }
-    }
-}
-
-#[derive(Serialize)]
-pub struct JsGameContext<'a> {
-    pub game_addr: &'a str,
-    pub access_version: u64,
-    pub settle_version: u64,
-    pub status: String,
-    pub allow_exit: bool,
-    pub players: Vec<JsPlayer<'a>>,
-    pub servers: Vec<JsServer<'a>>,
-}
-
-impl<'a> JsGameContext<'a> {
-    pub(crate) fn from_context(context: &'a GameContext) -> Self {
-        Self {
-            game_addr: context.get_game_addr(),
-            access_version: context.get_access_version(),
-            settle_version: context.get_settle_version(),
-            status: context.get_status().to_string(),
-            allow_exit: context.is_allow_exit(),
-            servers: context.get_servers().iter().map(Into::into).collect(),
-            players: context.get_players().iter().map(Into::into).collect(),
-        }
-    }
-}
-
-#[wasm_bindgen]
-pub struct Event {
-    kind: String,
-    sender: Option<String>,
-    data: JsValue,
-}
-
-#[wasm_bindgen]
-impl Event {
-    #[wasm_bindgen]
-    pub fn kind(&self) -> Result<String> {
-        Ok(self.kind.clone())
-    }
-
-    #[wasm_bindgen]
-    pub fn sender(&self) -> Option<String> {
-        self.sender.clone()
-    }
-
-    #[wasm_bindgen]
-    pub fn data(&self) -> JsValue {
-        self.data.clone()
-    }
-}
-
-impl From<race_core::event::Event> for Event {
-    fn from(value: race_core::event::Event) -> Self {
-        use race_core::event::Event::*;
-        match value {
-            Custom { sender, raw } => Self {
-                kind: "custom".into(),
-                sender: Some(sender),
-                data: parse(&raw).unwrap(),
-            },
-            Ready => Self {
-                kind: "ready".into(),
-                sender: None,
-                data: JsValue::null(),
-            },
-            ShareSecrets { sender, shares } => {
-                let data = Object::new();
-                Reflect::set(
-                    &data,
-                    &"shares".into(),
-                    &JsValue::from_serde(&shares).unwrap(),
-                )
-                .unwrap();
-                Self {
-                    kind: "share-secrets".into(),
-                    sender: Some(sender),
-                    data: JsValue::from(data),
-                }
-            }
-            OperationTimeout { addrs } => {
-                let data = Object::new();
-                Reflect::set(
-                    &data,
-                    &"addrs".into(),
-                    &JsValue::from_serde(&addrs).unwrap(),
-                )
-                .unwrap();
-                Self {
-                    kind: "operation-timeout".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            Mask {
-                sender,
-                random_id,
-                ciphertexts,
-            } => {
-                let data = Object::new();
-                Reflect::set(&data, &"randomId".into(), &random_id.into()).unwrap();
-                Reflect::set(
-                    &data,
-                    &"ciphertexts".into(),
-                    &JsValue::from_serde(&ciphertexts).unwrap(),
-                )
-                .unwrap();
-                Self {
-                    kind: "mask".into(),
-                    sender: Some(sender),
-                    data: JsValue::from(data),
-                }
-            }
-            Lock {
-                sender,
-                random_id,
-                ciphertexts_and_digests,
-            } => {
-                let data = Object::new();
-                Reflect::set(&data, &"randomId".into(), &random_id.into()).unwrap();
-                Reflect::set(
-                    &data,
-                    &"ciphertextsAndDigests".into(),
-                    &JsValue::from_serde(&ciphertexts_and_digests).unwrap(),
-                )
-                .unwrap();
-                Self {
-                    kind: "lock".into(),
-                    sender: Some(sender),
-                    data: JsValue::from(data),
-                }
-            }
-            RandomnessReady { random_id } => {
-                let data = Object::new();
-                Reflect::set(&data, &"randomId".into(), &random_id.into()).unwrap();
-                Self {
-                    kind: "randomness-ready".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            Sync {
-                new_players,
-                new_servers,
-                transactor_addr,
-                access_version,
-            } => {
-                let data = Object::new();
-                Reflect::set(&data, &"transactorAddr".into(), &transactor_addr.into()).unwrap();
-                Reflect::set(
-                    &data,
-                    &"newPlayers".into(),
-                    &JsValue::from_serde(&new_players).unwrap(),
-                )
-                .unwrap();
-                Reflect::set(
-                    &data,
-                    &"newServers".into(),
-                    &JsValue::from_serde(&new_servers).unwrap(),
-                )
-                .unwrap();
-                Reflect::set(&data, &"accessVersion".into(), &access_version.into()).unwrap();
-                Self {
-                    kind: "sync".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            ServerLeave {
-                server_addr,
-                transactor_addr,
-            } => {
-                let data = Object::new();
-                Reflect::set(&data, &"transactorAddr".into(), &transactor_addr.into()).unwrap();
-                Reflect::set(&data, &"serverAddr".into(), &server_addr.into()).unwrap();
-                Self {
-                    kind: "server-leave".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            Leave { player_addr } => {
-                let data = Object::new();
-                Reflect::set(&data, &"playerAddr".into(), &player_addr.into()).unwrap();
-                Self {
-                    kind: "leave".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            GameStart { access_version } => {
-                let data = Object::new();
-                Reflect::set(&data, &"accessVersion".into(), &access_version.into()).unwrap();
-                Self {
-                    kind: "game-start".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            WaitingTimeout => Self {
-                kind: "waiting-timeout".into(),
-                sender: None,
-                data: JsValue::null(),
-            },
-            ActionTimeout { player_addr } => {
-                let data = Object::new();
-                Reflect::set(&data, &"playerAddr".into(), &player_addr.into()).unwrap();
-                Self {
-                    kind: "action-timeout".into(),
-                    sender: None,
-                    data: JsValue::from(data),
-                }
-            }
-            SecretsReady => Self {
-                kind: "secrets-ready".into(),
-                sender: None,
-                data: JsValue::null(),
-            },
-            Shutdown => Self {
-                kind: "shutdown".into(),
-                sender: None,
-                data: JsValue::null(),
-            },
-            _ => Self {
-                kind: "unknown".into(),
-                sender: None,
-                data: JsValue::null(),
-            },
-        }
-    }
-}
-
-pub fn rget<T: JsCast>(obj: &Object, key: &str) -> Result<T> {
-    let Ok(v) = Reflect::get(obj, &key.to_owned().into()) else {
-        return Err(JsError::new(&format!("Missing {}", key)))
-    };
-    let Ok(v) = v.dyn_into::<T>() else {
-        return Err(JsError::new(&format!("Invalid parameter {}", key)))
-    };
-    Ok(v)
-}
-
-pub fn rget_string(obj: &Object, key: &str) -> Result<String> {
-    let Ok(v) = Reflect::get(obj, &key.to_owned().into()) else {
-        return Err(JsError::new(&format!("Missing {}", key)))
-    };
-    v.as_string().ok_or(JsError::new(&format!(
-        "Invalid parameter {}, expect string",
-        key
-    )))
-}
-
-pub fn _rget_u8(obj: &Object, key: &str) -> Result<u8> {
-    let Ok(v) = Reflect::get(obj, &key.to_owned().into()) else {
-        return Err(JsError::new(&format!("Missing {}", key)))
-    };
-    v.as_f64()
-        .ok_or(JsError::new(&format!(
-            "Invalid parameter {}, expect string",
-            key
-        )))
-        .map(|n| n as u8)
-}
-
-pub fn rget_u16(obj: &Object, key: &str) -> Result<u16> {
-    let Ok(v) = Reflect::get(obj, &key.to_owned().into()) else {
-        return Err(JsError::new(&format!("Missing {}", key)))
-    };
-    v.as_f64()
-        .ok_or(JsError::new(&format!(
-            "Invalid parameter {}, expect string",
-            key
-        )))
-        .map(|n| n as u16)
-}
-
-pub fn rget_u64(obj: &Object, key: &str) -> Result<u64> {
-    let Ok(v) = Reflect::get(obj, &key.to_owned().into()) else {
-        return Err(JsError::new(&format!("Missing {}", key)))
-    };
-    v.as_f64()
-        .ok_or(JsError::new(&format!(
-            "Invalid parameter {}, expect string",
-            key
-        )))
-        .map(|n| n as u64)
-}
diff --git a/legacy/sdk/src/lib.rs b/legacy/sdk/src/lib.rs
deleted file mode 100644
index 7ae7c8da..00000000
--- a/legacy/sdk/src/lib.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-#![cfg(target_arch = "wasm32")]
-
-mod app_client;
-mod app_helper;
-mod connection;
-mod error;
-mod handler;
-mod js;
-mod transport;
-mod utils;
diff --git a/legacy/sdk/src/transport.rs b/legacy/sdk/src/transport.rs
deleted file mode 100644
index b5bad79a..00000000
--- a/legacy/sdk/src/transport.rs
+++ /dev/null
@@ -1,207 +0,0 @@
-#![allow(unused_variables)]
-use async_trait::async_trait;
-use borsh::BorshDeserialize;
-use gloo::utils::format::JsValueSerdeExt;
-use js_sys::Uint8Array;
-use race_core::types::{
-    CloseGameAccountParams, CreateGameAccountParams, CreatePlayerProfileParams,
-    CreateRegistrationParams, DepositParams, GameAccount, GameBundle, JoinParams, PlayerProfile,
-    PublishGameParams, RegisterGameParams, RegistrationAccount, ServerAccount,
-    UnregisterGameParams, VoteParams,
-};
-use race_transport::{
-    error::{TransportError, TransportResult},
-    TransportLocalT,
-};
-use serde::Serialize;
-use wasm_bindgen::{JsCast, JsValue};
-
-use crate::{
-    error::SdkError,
-    utils::{get_function, resolve_promise},
-};
-
-pub struct Transport {
-    inner: JsValue,
-}
-
-impl Transport {
-    pub fn new(inner: JsValue) -> Self {
-        Self { inner }
-    }
-}
-
-fn parse_params<T: Serialize>(params: &T) -> TransportResult<JsValue> {
-    JsValue::from_serde(params).map_err(|e| {
-        TransportError::InvalidParameter(
-            "Failed to serialize parameters for transport invocation".into(),
-        )
-    })
-}
-
-fn parse_js_value<T: BorshDeserialize>(value: &JsValue) -> TransportResult<Option<T>> {
-    if value.is_undefined() {
-        return Ok(None);
-    }
-    let f = get_function(value, "serialize")?;
-
-    let r = match f.call0(value) {
-        Ok(r) => r,
-        Err(e) => {
-            gloo::console::error!("Failed to serialize object:", value, e);
-            return Err(TransportError::InteropError);
-        }
-    };
-
-    let r = match r.dyn_into::<Uint8Array>() {
-        Ok(r) => r,
-        Err(e) => {
-            gloo::console::error!("Failed to parse object to Uint8Array:", e);
-            return Err(TransportError::InteropError);
-        }
-    };
-
-    match T::try_from_slice(&r.to_vec()) {
-        Ok(r) => Ok(Some(r)),
-        Err(e) => {
-            gloo::console::error!("Failed to deserialize:", r);
-            gloo::console::error!(format!("Error: {:?}", e));
-            return Err(TransportError::InteropError);
-        }
-    }
-}
-
-impl Transport {
-    async fn api_fetch<T: BorshDeserialize>(
-        &self,
-        api: &str,
-        addr: &str,
-    ) -> TransportResult<Option<T>> {
-        let f = get_function(&self.inner, api)?;
-        let p = f.call1(&self.inner, &addr.into()).map_err(|e| {
-            SdkError::InteropError(format!("An error occurred in API fetch: {}", api))
-        })?;
-        let value = resolve_promise(p).await?;
-        Ok(parse_js_value(&value)?)
-    }
-
-    async fn api_call<T: Serialize>(
-        &self,
-        api: &str,
-        wallet: &JsValue,
-        params: T,
-    ) -> TransportResult<JsValue> {
-        let f = get_function(&self.inner, api)?;
-        let params = parse_params(&params)?;
-        let p: JsValue = f.call2(&self.inner, &wallet, &params).map_err(|e| {
-            SdkError::InteropError(format!("An error occurred in API call: {}", api))
-        })?;
-        Ok(resolve_promise(p).await?)
-    }
-}
-
-#[async_trait(?Send)]
-impl TransportLocalT for Transport {
-    async fn create_game_account(
-        &self,
-        wallet: &JsValue,
-        params: CreateGameAccountParams,
-    ) -> TransportResult<String> {
-        self.api_call("createGameAccount", wallet, &params)
-            .await?
-            .as_string()
-            .ok_or(TransportError::ParseAddressError)
-    }
-
-    async fn close_game_account(
-        &self,
-        wallet: &JsValue,
-        params: CloseGameAccountParams,
-    ) -> TransportResult<()> {
-        self.api_call("closeGameAccount", wallet, &params).await?;
-        Ok(())
-    }
-
-    async fn create_player_profile(
-        &self,
-        wallet: &JsValue,
-        params: CreatePlayerProfileParams,
-    ) -> TransportResult<()> {
-        self.api_call("createPlayerProfile", wallet, &params)
-            .await?;
-        Ok(())
-    }
-
-    async fn join(&self, wallet: &JsValue, params: JoinParams) -> TransportResult<()> {
-        self.api_call("join", wallet, &params).await?;
-        Ok(())
-    }
-
-    async fn deposit(&self, wallet: &JsValue, params: DepositParams) -> TransportResult<()> {
-        self.api_call("deposit", wallet, &params).await?;
-        Ok(())
-    }
-
-    async fn vote(&self, wallet: &JsValue, params: VoteParams) -> TransportResult<()> {
-        self.api_call("vote", wallet, &params).await?;
-        Ok(())
-    }
-
-    async fn publish_game(
-        &self,
-        wallet: &JsValue,
-        params: PublishGameParams,
-    ) -> TransportResult<String> {
-        self.api_call("publishGame", wallet, &params)
-            .await?
-            .as_string()
-            .ok_or(TransportError::ParseAddressError)
-    }
-
-    async fn create_registration(
-        &self,
-        wallet: &JsValue,
-        params: CreateRegistrationParams,
-    ) -> TransportResult<String> {
-        self.api_call("createRegistration", wallet, &params)
-            .await?
-            .as_string()
-            .ok_or(TransportError::ParseAddressError)
-    }
-
-    async fn register_game(
-        &self,
-        wallet: &JsValue,
-        params: RegisterGameParams,
-    ) -> TransportResult<()> {
-        Ok(())
-    }
-
-    async fn unregister_game(
-        &self,
-        wallet: &JsValue,
-        _params: UnregisterGameParams,
-    ) -> TransportResult<()> {
-        Ok(())
-    }
-
-    async fn get_player_profile(&self, addr: &str) -> TransportResult<Option<PlayerProfile>> {
-        self.api_fetch("getPlayerProfile", addr).await
-    }
-
-    async fn get_game_account(&self, addr: &str) -> TransportResult<Option<GameAccount>> {
-        self.api_fetch("getGameAccount", addr).await
-    }
-
-    async fn get_game_bundle(&self, addr: &str) -> TransportResult<Option<GameBundle>> {
-        self.api_fetch("getGameBundle", addr).await
-    }
-
-    async fn get_server_account(&self, addr: &str) -> TransportResult<Option<ServerAccount>> {
-        self.api_fetch("getServerAccount", addr).await
-    }
-
-    async fn get_registration(&self, addr: &str) -> TransportResult<Option<RegistrationAccount>> {
-        self.api_fetch("getRegistration", addr).await
-    }
-}
diff --git a/legacy/sdk/src/utils.rs b/legacy/sdk/src/utils.rs
deleted file mode 100644
index f8ed4f36..00000000
--- a/legacy/sdk/src/utils.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-use gloo::console::{error, warn};
-use js_sys::{Function, Promise, Reflect};
-use wasm_bindgen::{JsCast, JsValue};
-use wasm_bindgen_futures::JsFuture;
-
-use crate::error::SdkError;
-
-pub(crate) fn rget(obj: &JsValue, key: &str) -> JsValue {
-    Reflect::get(obj, &key.into()).unwrap()
-}
-
-pub(crate) fn get_function(obj: &JsValue, name: &str) -> Result<Function, SdkError> {
-    Reflect::get(obj, &name.into())
-        .map_err(|_e| {
-            error!("Object:", obj);
-            error!("Property:", name);
-            SdkError::InteropError("Function does not exist".into())
-        })?
-        .dyn_into::<Function>()
-        .map_err(|_e| {
-            error!("Object:", obj);
-            error!("Property:", name);
-            SdkError::InteropError("Property is not a function".into())
-        })
-}
-
-pub(crate) async fn resolve_promise(p: JsValue) -> Result<JsValue, SdkError> {
-    let p = match p.dyn_into::<Promise>() {
-        Ok(p) => p,
-        Err(e) => {
-            warn!("Unexpected type of JsValue(Promise was expected):", e);
-            return Err(SdkError::InteropError("Unexpected type of JsValue".into()));
-        }
-    };
-    match JsFuture::from(p).await {
-        Ok(x) => Ok(x),
-        Err(e) => {
-            warn!("Failed to resolve promise:", e);
-            return Err(SdkError::InteropError("Failed to resolve a promise".into()));
-        }
-    }
-}
diff --git a/local-db/Cargo.toml b/local-db/Cargo.toml
new file mode 100644
index 00000000..2b941152
--- /dev/null
+++ b/local-db/Cargo.toml
@@ -0,0 +1,29 @@
+[package]
+name = "race-local-db"
+description = "Module for save data to local database."
+version.workspace = true
+authors.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+documentation.workspace = true
+homepage.workspace = true
+keywords.workspace = true
+readme.workspace = true
+publish = true
+
+[dependencies]
+race-core = { workspace = true }
+race-api = { workspace = true }
+race-transport = { workspace = true }
+race-env = { workspace = true }
+tokio = { workspace = true, features = ["full"] }
+anyhow = { workspace = true }
+thiserror = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+borsh = { workspace = true }
+async-trait = { workspace = true }
+rusqlite = { workspace = true, features = ["bundled"] }
+sha256 = { workspace = true }
diff --git a/local-db/src/lib.rs b/local-db/src/lib.rs
new file mode 100644
index 00000000..33715dfd
--- /dev/null
+++ b/local-db/src/lib.rs
@@ -0,0 +1,132 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use borsh::BorshDeserialize;
+use race_api::error::{Error, Result};
+use race_core::{
+    checkpoint::CheckpointOffChain,
+    storage::StorageT,
+    types::{GetCheckpointParams, SaveCheckpointParams},
+};
+use rusqlite::{params, Connection, OptionalExtension};
+use tokio::sync::Mutex;
+use sha256::digest;
+
+pub struct LocalDbStorage {
+    conn: Arc<Mutex<Connection>>,
+}
+
+#[async_trait]
+impl StorageT for LocalDbStorage {
+    async fn save_checkpoint(&self, params: SaveCheckpointParams) -> Result<()> {
+        let conn = self.conn.lock().await;
+        let checkpoint_bs = borsh::to_vec(&params.checkpoint).or(Err(Error::MalformedCheckpoint))?;
+        let sha = digest(&checkpoint_bs);
+        conn.execute(
+            "INSERT OR REPLACE INTO game_checkpoints (game_addr, settle_version, checkpoint, sha) VALUES (?1, ?2, ?3, ?4)",
+            params![params.game_addr, params.settle_version, checkpoint_bs, sha],
+        )
+        .map_err(|e| Error::StorageError(e.to_string()))?;
+
+        Ok(())
+    }
+
+    async fn get_checkpoint(
+        &self,
+        params: GetCheckpointParams,
+    ) -> Result<Option<CheckpointOffChain>> {
+        let conn = self.conn.lock().await;
+
+        let checkpoint_bs = conn
+            .query_row(
+                "SELECT checkpoint FROM game_checkpoints WHERE game_addr = ?1 and settle_version = ?2",
+                params![params.game_addr, params.settle_version],
+                |row| {
+                    row.get::<_, Vec<u8>>(0)
+                }
+            ).optional()
+            .map_err(|e| Error::StorageError(e.to_string()))?;
+
+        if let Some(checkpoint_bs) = checkpoint_bs {
+            let checkpoint = CheckpointOffChain::try_from_slice(&checkpoint_bs)
+                .map_err(|e| Error::StorageError(e.to_string()))?;
+
+            Ok(Some(checkpoint))
+        } else {
+            Ok(None)
+        }
+    }
+}
+
+pub fn init_table(conn: &Connection) -> Result<()> {
+    conn.execute(
+        "CREATE TABLE IF NOT EXISTS game_checkpoints (
+          game_addr TEXT NOT NULL,
+          settle_version INTEGER NOT NULL,
+          checkpoint BLOB NOT NULL,
+          sha TEXT NOT NULL,
+          PRIMARY KEY(game_addr, settle_version)
+        )",
+        (),
+    )
+    .map_err(|e| Error::StorageError(e.to_string()))?;
+    Ok(())
+}
+
+impl LocalDbStorage {
+    pub fn try_new_mem() -> Result<Self> {
+        let conn = Connection::open_in_memory().map_err(|e| Error::StorageError(e.to_string()))?;
+
+        init_table(&conn)?;
+
+        Ok(Self {
+            conn: Arc::new(Mutex::new(conn)),
+        })
+    }
+
+    pub fn try_new(db_file_path: &str) -> Result<Self> {
+        let conn =
+            Connection::open(db_file_path).map_err(|e| Error::StorageError(e.to_string()))?;
+
+        init_table(&conn)?;
+
+        Ok(Self {
+            conn: Arc::new(Mutex::new(conn)),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use race_core::checkpoint::Checkpoint;
+
+    use super::*;
+
+    #[tokio::test]
+    async fn test_insert_and_query() {
+        let game_addr = "testaddr1".to_string();
+        let state = vec![1, 2, 3, 4];
+        let settle_version = 10;
+        // let storage = LocalDbStorage::try_new("trasnactor-db").unwrap();
+        let storage = LocalDbStorage::try_new_mem().unwrap();
+        let checkpoint = Checkpoint::new(0, 1, 1, state).derive_offchain_part();
+        storage
+            .save_checkpoint(SaveCheckpointParams {
+                game_addr: game_addr.clone(),
+                settle_version,
+                checkpoint: checkpoint.clone(),
+            })
+            .await
+            .unwrap();
+
+        let checkpoint_from_db = storage
+            .get_checkpoint(GetCheckpointParams {
+                game_addr: game_addr.clone(),
+                settle_version,
+            })
+            .await
+            .unwrap();
+
+        assert_eq!(checkpoint_from_db, Some(checkpoint));
+    }
+}
diff --git a/proc-macro/src/lib.rs b/proc-macro/src/lib.rs
index 1bda3e43..b9c33911 100644
--- a/proc-macro/src/lib.rs
+++ b/proc-macro/src/lib.rs
@@ -15,24 +15,15 @@ use syn::{parse_macro_input, ItemStruct};
 /// #[game_handler]
 /// struct S {}
 ///
-/// #[derive(BorshDeserialize, BorshSerialize)]
-/// struct Checkpoint {}
-///
 /// impl GameHandler for S {
 ///
-///     type Checkpoint = Checkpoint;
-///
 ///     fn init_state(context: &mut Effect, init_account: InitAccount) -> HandleResult<Self> {
 ///         Ok(Self {})
 ///     }
-
+///
 ///     fn handle_event(&mut self, context: &mut Effect, event: Event) -> HandleResult<()> {
 ///         Ok(())
 ///     }
-///
-///     fn into_checkpoint(self) -> HandleResult<Checkpoint> {
-///         Ok(Checkpoint {})
-///     }
 /// }
 /// ```
 #[proc_macro_attribute]
@@ -55,7 +46,7 @@ pub fn game_handler(_metadata: TokenStream, input: TokenStream) -> TokenStream {
         }
 
         pub fn write_ptr<T: BorshSerialize>(ptr: &mut *mut u8, data: T) -> u32 {
-            if let Ok(vec) = data.try_to_vec() {
+            if let Ok(vec) = borsh::to_vec(&data) {
                 unsafe { std::ptr::copy(vec.as_ptr(), *ptr, vec.len()) }
                 vec.len() as _
             } else {
@@ -83,13 +74,6 @@ pub fn game_handler(_metadata: TokenStream, input: TokenStream) -> TokenStream {
                 Err(e) => effect.__set_error(e),
             }
 
-            if effect.is_checkpoint {
-                match handler.into_checkpoint() {
-                    Ok(checkpoint_state) => effect.__set_checkpoint(checkpoint_state),
-                    Err(e) => effect.__set_error(e),
-                }
-            }
-
             let mut ptr = 1 as *mut u8;
             write_ptr(&mut ptr, effect)
         }
@@ -102,7 +86,7 @@ pub fn game_handler(_metadata: TokenStream, input: TokenStream) -> TokenStream {
             } else {
                 return 1
             };
-            let init_account: race_api::engine::InitAccount = if let Some(init_account) = read_ptr(&mut ptr, init_account_size) {
+            let init_account: race_api::init_account::InitAccount = if let Some(init_account) = read_ptr(&mut ptr, init_account_size) {
                 init_account
             } else {
                 return 2
diff --git a/test/Cargo.toml b/test/Cargo.toml
index b3e173c7..58eca3fa 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -20,6 +20,8 @@ race-client.workspace = true
 race-encryptor.workspace = true
 borsh.workspace = true
 async-trait.workspace = true
+async-stream.workspace = true
+futures.workspace = true
 rand.workspace = true
 serde_json.workspace = true
 serde.workspace = true
diff --git a/test/src/account_helpers.rs b/test/src/account_helpers.rs
index eb6fbd6f..8ae4bc94 100644
--- a/test/src/account_helpers.rs
+++ b/test/src/account_helpers.rs
@@ -1,10 +1,6 @@
-use crate::client_helpers::TestClient;
+use crate::{client_helpers::TestClient, misc::{test_game_addr, test_game_title}};
 use borsh::BorshSerialize;
-use race_core::types::{ClientMode, EntryType, GameAccount, GameBundle, PlayerJoin, ServerJoin};
-
-pub fn test_game_addr() -> String {
-    "TEST".into()
-}
+use race_core::types::{ClientMode, EntryType, GameAccount, PlayerJoin, ServerJoin};
 
 pub struct TestGameAccountBuilder {
     account: GameAccount,
@@ -13,8 +9,8 @@ pub struct TestGameAccountBuilder {
 impl Default for TestGameAccountBuilder {
     fn default() -> Self {
         let account = GameAccount {
-            addr: "TEST".into(),
-            title: "Unnamed".into(),
+            addr: test_game_addr(),
+            title: test_game_title(),
             bundle_addr: "".into(),
             owner_addr: "".into(),
             settle_version: 0,
@@ -31,8 +27,7 @@ impl Default for TestGameAccountBuilder {
             recipient_addr: "".into(),
             entry_type: EntryType::default(),
             token_addr: "".into(),
-            checkpoint: vec![],
-            checkpoint_access_version: 0,
+            checkpoint_on_chain: None,
         };
         TestGameAccountBuilder { account }
     }
@@ -72,8 +67,8 @@ impl TestGameAccountBuilder {
         self
     }
 
-    pub fn set_transactor(mut self, server: &TestClient) -> Self {
-        if server.get_mode().ne(&ClientMode::Transactor) {
+    pub fn set_transactor(mut self, server: &mut TestClient) -> Self {
+        if server.mode().ne(&ClientMode::Transactor) {
             panic!("A test client in TRANSACTOR Mode is required");
         }
         if self.account.transactor_addr.is_some() {
@@ -83,49 +78,51 @@ impl TestGameAccountBuilder {
             .account
             .servers
             .iter()
-            .find(|s| s.addr.eq(&server.get_addr()))
+            .find(|s| s.addr.eq(&server.addr()))
             .is_some()
         {
             panic!("Server already added")
         }
-        self.account.transactor_addr = Some(server.get_addr());
+        self.account.transactor_addr = Some(server.addr());
         self.account.access_version += 1;
         self.account.servers.insert(
             0,
             ServerJoin {
-                addr: server.get_addr(),
+                addr: server.addr(),
                 endpoint: "".into(),
                 access_version: self.account.access_version,
                 verify_key: "".into(),
             },
         );
+        server.set_id(self.account.access_version);
         self
     }
 
-    pub fn add_validator(mut self, server: &TestClient) -> Self {
-        if server.get_mode().ne(&ClientMode::Validator) {
+    pub fn add_validator(mut self, server: &mut TestClient) -> Self {
+        if server.mode().ne(&ClientMode::Validator) {
             panic!("A test client in VALIDATOR Mode is required");
         }
         if self
             .account
             .servers
             .iter()
-            .find(|s| s.addr.eq(&server.get_addr()))
+            .find(|s| s.addr.eq(&server.addr()))
             .is_some()
         {
             panic!("Server already added")
         }
         self.account.access_version += 1;
         self.account.servers.push(ServerJoin {
-            addr: server.get_addr(),
+            addr: server.addr(),
             endpoint: "".into(),
             access_version: self.account.access_version,
             verify_key: "".into(),
         });
+        server.set_id(self.account.access_version);
         self
     }
 
-    pub fn add_player(self, player: &TestClient, deposit: u64) -> Self {
+    pub fn add_player(self, player: &mut TestClient, deposit: u64) -> Self {
         let mut position = None;
         for i in 0..self.account.max_players {
             if self
@@ -150,7 +147,7 @@ impl TestGameAccountBuilder {
 
     pub fn add_player_with_position(
         mut self,
-        player: &TestClient,
+        player: &mut TestClient,
         deposit: u64,
         position: u16,
     ) -> Self {
@@ -158,12 +155,12 @@ impl TestGameAccountBuilder {
             .account
             .players
             .iter()
-            .find(|p| p.addr.eq(&player.get_addr()))
+            .find(|p| p.addr.eq(&player.addr()))
             .is_some()
         {
             panic!("Player already added")
         }
-        if player.get_mode().ne(&ClientMode::Player) {
+        if player.mode().ne(&ClientMode::Player) {
             panic!("A test client in PLAYER mode is required");
         }
         self.account.access_version += 1;
@@ -176,17 +173,18 @@ impl TestGameAccountBuilder {
             panic!("Player position occupied");
         }
         self.account.players.push(PlayerJoin {
-            addr: player.get_addr(),
+            addr: player.addr(),
             position,
             access_version: self.account.access_version,
             balance: deposit,
             verify_key: "".into(),
         });
+        player.set_id(self.account.access_version);
         self
     }
 
     pub fn with_data<T: BorshSerialize>(self, account_data: T) -> Self {
-        let data = account_data.try_to_vec().expect("Serialize data failed");
+        let data = borsh::to_vec(&account_data).expect("Serialize data failed");
         self.with_data_vec(data)
     }
 
@@ -196,14 +194,3 @@ impl TestGameAccountBuilder {
         self
     }
 }
-
-pub fn create_game_bundle_from_path(path: &str) -> GameBundle {
-    let proj_root = project_root::get_project_root().expect("No project root found");
-    let bundle_path = proj_root.join(path);
-    let data = std::fs::read(bundle_path).expect("Can't read file");
-    GameBundle {
-        uri: "".to_string(),
-        name: "FILE BUNDLE".to_string(),
-        data,
-    }
-}
diff --git a/test/src/client_helpers.rs b/test/src/client_helpers.rs
index 3326c7d8..ac422d98 100644
--- a/test/src/client_helpers.rs
+++ b/test/src/client_helpers.rs
@@ -1,9 +1,11 @@
 use std::{collections::HashMap, sync::Arc};
 
 use async_trait::async_trait;
+use race_api::types::{GamePlayer, PlayerJoin};
 use race_client::Client;
-use race_api::error::Result;
+use race_api::error::{Result, Error};
 use race_api::event::{CustomEvent, Event};
+use race_core::types::GameAccount;
 use race_core::{
     connection::ConnectionT,
     context::GameContext,
@@ -13,12 +15,24 @@ use race_core::{
 use race_encryptor::Encryptor;
 use tokio::sync::{mpsc, Mutex};
 
-use crate::{transport_helpers::DummyTransport, account_helpers::test_game_addr};
+use crate::misc::test_game_addr;
+use crate::transport_helpers::DummyTransport;
 
 pub struct TestClient {
+    id: Option<u64>,
     client: Client,
 }
 
+pub(crate) trait AsGameContextRef {
+    fn as_game_context_ref(&self) -> &GameContext;
+}
+
+impl AsGameContextRef for GameContext {
+    fn as_game_context_ref(&self) -> &GameContext {
+        &self
+    }
+}
+
 pub struct DummyConnection {
     rx: Mutex<mpsc::Receiver<Event>>,
     tx: mpsc::Sender<Event>,
@@ -69,6 +83,7 @@ impl TestClient {
         let encryptor = Arc::new(Encryptor::default());
         let connection = Arc::new(DummyConnection::default());
         Self {
+            id: None,
             client: Client::new(
                 addr,
                 test_game_addr(),
@@ -84,6 +99,45 @@ impl TestClient {
         Self::new(addr, ClientMode::Player)
     }
 
+    pub(crate) fn set_id(&mut self, id: u64) {
+        self.id = Some(id)
+    }
+
+    pub(crate) fn join(&mut self, game_context: &mut GameContext, game_account: &mut GameAccount, balance: u64) -> Result<GamePlayer> {
+        if self.client.mode != ClientMode::Player {
+            panic!("TestClient can only join with Player mode");
+        }
+
+        if game_account.players.len() >= game_account.max_players as _ {
+            return Err(Error::GameIsFull(game_account.max_players as _))
+        }
+
+        game_account.access_version += 1;
+        let id = game_account.access_version;
+
+        let mut position = 0;
+        for i in 0..game_account.max_players {
+            if game_account.players.iter().find(|p| p.position == i).is_none() {
+                position = i;
+                break;
+            }
+        }
+
+        game_account.players.push(PlayerJoin {
+            addr: self.client.addr.clone(),
+            position,
+            balance,
+            access_version: id,
+            verify_key: "".into(),
+        });
+        self.set_id(id);
+        game_context.add_node(self.client.addr.clone(), id, ClientMode::Player);
+
+        Ok(GamePlayer {
+            id, position, balance
+        })
+    }
+
     pub fn transactor<S: Into<String>>(addr: S) -> Self {
         Self::new(addr, ClientMode::Transactor)
     }
@@ -92,34 +146,38 @@ impl TestClient {
         Self::new(addr, ClientMode::Validator)
     }
 
-    pub fn handle_updated_context(&mut self, ctx: &GameContext) -> Result<Vec<Event>> {
-        self.client.handle_updated_context(ctx)
+    pub(crate) fn handle_updated_context<T: AsGameContextRef>(&mut self, ctx: &T) -> Result<Vec<Event>> {
+        self.client.handle_updated_context(ctx.as_game_context_ref())
     }
 
-    pub fn get_mode(&self) -> ClientMode {
+    pub fn mode(&self) -> ClientMode {
         self.client.mode.clone()
     }
 
-    pub fn get_addr(&self) -> String {
+    pub fn addr(&self) -> String {
         self.client.addr.clone()
     }
 
-    pub fn decrypt(
-        &mut self,
-        ctx: &GameContext,
+    pub(crate) fn decrypt<T: AsGameContextRef>(
+        &self,
+        ctx: &T,
         random_id: usize,
     ) -> Result<HashMap<usize, String>> {
-        self.client.decrypt(ctx, random_id)
+        self.client.decrypt(ctx.as_game_context_ref(), random_id)
     }
 
     pub fn secret_state(&self) -> &SecretState {
         &self.client.secret_state
     }
 
+    pub fn id(&self) -> u64 {
+        self.id.expect(&format!("Client {} is not in game", self.client.addr))
+    }
+
     pub fn custom_event<E: CustomEvent>(&self, custom_event: E) -> Event {
         Event::Custom {
-            sender: self.client.addr.to_owned(),
-            raw: custom_event.try_to_vec().unwrap(),
+            sender: self.id(),
+            raw: borsh::to_vec(&custom_event).unwrap(),
         }
     }
 
@@ -135,7 +193,7 @@ mod tests {
     #[tokio::test]
     async fn test_dummy_connection() -> Result<()> {
         let conn = DummyConnection::default();
-        let event = Event::GameStart { access_version: 1 };
+        let event = Event::GameStart;
         conn.submit_event(
             "",
             SubmitEventParams {
diff --git a/test/src/context_helpers.rs b/test/src/context_helpers.rs
new file mode 100644
index 00000000..0b1aa97b
--- /dev/null
+++ b/test/src/context_helpers.rs
@@ -0,0 +1,305 @@
+use std::collections::HashMap;
+
+use crate::client_helpers::TestClient;
+use crate::misc::{test_game_addr, test_game_title};
+use crate::prelude::{AsGameContextRef, TestHandler};
+use borsh::BorshSerialize;
+use race_api::engine::GameHandler;
+use race_api::error::Result;
+use race_api::event::Event;
+use race_api::prelude::InitAccount;
+use race_api::random::RandomState;
+use race_core::checkpoint::{CheckpointOffChain, CheckpointOnChain, VersionedData};
+use race_core::types::{ClientMode, EntryType, GameAccount, PlayerJoin, ServerJoin};
+use race_core::context::{DispatchEvent, EventEffects, GameContext};
+
+pub struct TestContext<H>
+where
+    H: GameHandler,
+{
+    context: GameContext,
+    account: GameAccount,
+    handler: TestHandler<H>,
+}
+
+impl<H: GameHandler> TestContext<H> {
+    pub fn join(&mut self, player: &mut TestClient, deposit: u64) -> Event {
+        self.join_multi(vec![(player, deposit)])
+    }
+
+    pub fn join_multi(&mut self, players_and_deposits: Vec<(&mut TestClient, u64)>) -> Event {
+        let mut players = vec![];
+        for (test_client, deposit) in players_and_deposits.into_iter() {
+            players.push(
+                test_client
+                    .join(&mut self.context, &mut self.account, deposit)
+                    .expect("Add player to TestContext"),
+            );
+        }
+        Event::Join { players }
+    }
+
+    pub fn handle_event(&mut self, event: &Event) -> Result<EventEffects> {
+        self.handler.handle_event(&mut self.context, event)
+    }
+
+    pub fn handle_dispatch_event(&mut self) -> Result<EventEffects> {
+        self.handler.handle_dispatch_event(&mut self.context)
+    }
+
+    pub fn handle_dispatch_until_no_events(
+        &mut self,
+        clients: Vec<&mut TestClient>,
+    ) -> Result<EventEffects> {
+        self.handler
+            .handle_dispatch_until_no_events(&mut self.context, clients)
+    }
+
+    pub fn init_account(&self) -> Result<InitAccount> {
+        self.context.init_account()
+    }
+
+    pub fn state(&self) -> &H {
+        self.handler.state()
+    }
+
+    pub fn state_mut(&mut self) -> &mut H {
+        self.handler.state_mut()
+    }
+
+    pub fn random_state(&mut self, random_id: usize) -> Result<&RandomState> {
+        self.context.get_random_state(random_id)
+    }
+
+    pub fn random_state_mut(&mut self, random_id: usize) -> Result<&mut RandomState> {
+        self.context.get_random_state_mut(random_id)
+    }
+
+    pub fn current_dispatch(&self) -> Option<DispatchEvent> {
+        self.context.get_dispatch().clone()
+    }
+
+    pub fn client_events(&self, client: &mut TestClient) -> Result<Vec<Event>> {
+        client.handle_updated_context(self)
+    }
+
+    pub fn client_decrypt(&self, client: &TestClient, random_id: usize) -> Result<HashMap<usize, String>> {
+        client.decrypt(self, random_id)
+    }
+}
+
+pub struct TestContextBuilder {
+    account: GameAccount,
+}
+
+impl Default for TestContextBuilder {
+    fn default() -> Self {
+        let account = GameAccount {
+            addr: test_game_addr(),
+            title: test_game_title(),
+            bundle_addr: "".into(),
+            owner_addr: "".into(),
+            settle_version: 0,
+            access_version: 0,
+            players: vec![],
+            data_len: 0,
+            data: vec![],
+            transactor_addr: None,
+            servers: vec![],
+            votes: vec![],
+            unlock_time: None,
+            max_players: 6,
+            deposits: vec![],
+            recipient_addr: "".into(),
+            entry_type: EntryType::default(),
+            token_addr: "".into(),
+            checkpoint_on_chain: None,
+        };
+        TestContextBuilder { account }
+    }
+}
+
+impl TestContextBuilder {
+    /// Initialize by calling handler's `init_state` without checkpoint.
+    pub fn build_with_init_state<H: GameHandler>(self) -> Result<(TestContext<H>, EventEffects)> {
+        let mut context = GameContext::try_new(&self.account, None)
+            .expect("Create game context with initial state api");
+        context.set_node_ready(context.access_version());
+
+        let (handler, event_effects) = TestHandler::<H>::init_state(&mut context)?;
+
+        Ok((
+            TestContext {
+                context,
+                account: self.account,
+                handler,
+            },
+            event_effects,
+        ))
+    }
+
+    /// Initialize with handler's checkpoint state.
+    pub fn build_with_checkpoint<H: GameHandler>(
+        mut self,
+        checkpoint: &H,
+    ) -> Result<(TestContext<H>, EventEffects)> {
+        let mut checkpoint_on_chain = CheckpointOnChain::default();
+        let mut checkpoint_off_chain = CheckpointOffChain::default();
+
+        checkpoint_on_chain.access_version = self.account.access_version;
+        self.account.checkpoint_on_chain = Some(checkpoint_on_chain);
+
+        checkpoint_off_chain.data.insert(
+            0,
+            VersionedData {
+                id: 0,
+                version: 1,
+                data: borsh::to_vec(checkpoint).expect("Failed to serialize checkpoint"),
+                sha: vec![],
+            },
+        );
+
+        let mut context = GameContext::try_new(&self.account, Some(checkpoint_off_chain))
+            .expect("Create game context with checkpoint state");
+
+        let (handler, event_effects) = TestHandler::<H>::init_state(&mut context)?;
+
+        Ok((
+            TestContext {
+                context,
+                account: self.account,
+                handler,
+            },
+            event_effects,
+        ))
+    }
+
+    pub fn with_max_players(mut self, max_players: u16) -> Self {
+        if max_players < self.account.players.len() as _ {
+            panic!("Invalid max_players specified, more players were added");
+        }
+        self.account.max_players = max_players;
+        self
+    }
+
+    pub fn with_deposit_range(mut self, min: u64, max: u64) -> Self {
+        if max < min {
+            panic!("Invalid deposit value, the max must be greater than the min");
+        }
+        self.account.entry_type = EntryType::Cash {
+            max_deposit: max,
+            min_deposit: min,
+        };
+        self
+    }
+
+    pub fn set_transactor(mut self, server: &mut TestClient) -> Self {
+        if server.mode().ne(&ClientMode::Transactor) {
+            panic!("A test client in TRANSACTOR Mode is required");
+        }
+        if self.account.transactor_addr.is_some() {
+            panic!("Only one transactor is allowed");
+        }
+        if self
+            .account
+            .servers
+            .iter()
+            .find(|s| s.addr.eq(&server.addr()))
+            .is_some()
+        {
+            panic!("Server already added")
+        }
+        self.account.transactor_addr = Some(server.addr());
+        self.account.access_version += 1;
+        self.account.servers.insert(
+            0,
+            ServerJoin {
+                addr: server.addr(),
+                endpoint: "".into(),
+                access_version: self.account.access_version,
+                verify_key: "".into(),
+            },
+        );
+        server.set_id(self.account.access_version);
+        self
+    }
+
+    pub fn add_player(self, player: &mut TestClient, deposit: u64) -> Self {
+        let mut position = None;
+        for i in 0..self.account.max_players {
+            if self
+                .account
+                .players
+                .iter()
+                .find(|p| p.position == i)
+                .is_some()
+            {
+                continue;
+            } else {
+                position = Some(i);
+                break;
+            }
+        }
+        if let Some(position) = position {
+            self.add_player_with_position(player, deposit, position)
+        } else {
+            panic!("Can't add player, game account is full");
+        }
+    }
+
+    pub fn add_player_with_position(
+        mut self,
+        player: &mut TestClient,
+        deposit: u64,
+        position: u16,
+    ) -> Self {
+        if self
+            .account
+            .players
+            .iter()
+            .find(|p| p.addr.eq(&player.addr()))
+            .is_some()
+        {
+            panic!("Player already added")
+        }
+        if player.mode().ne(&ClientMode::Player) {
+            panic!("A test client in PLAYER mode is required");
+        }
+        self.account.access_version += 1;
+        for p in self.account.players.iter() {
+            if p.position == position {
+                panic!("Player position occupied");
+            }
+        }
+        if position >= self.account.max_players {
+            panic!("Player position occupied");
+        }
+        self.account.players.push(PlayerJoin {
+            addr: player.addr(),
+            position,
+            access_version: self.account.access_version,
+            balance: deposit,
+            verify_key: "".into(),
+        });
+        player.set_id(self.account.access_version);
+        self
+    }
+
+    pub fn with_data<T: BorshSerialize>(self, account_data: T) -> Self {
+        let data = borsh::to_vec(&account_data).expect("Serialize data failed");
+        self.with_data_vec(data)
+    }
+
+    pub fn with_data_vec(mut self, data: Vec<u8>) -> Self {
+        self.account.data_len = data.len() as _;
+        self.account.data = data;
+        self
+    }
+}
+
+
+impl<H: GameHandler> AsGameContextRef for TestContext<H> {
+    fn as_game_context_ref(&self) -> &GameContext {
+        &self.context
+    }
+}
diff --git a/test/src/event_helpers.rs b/test/src/event_helpers.rs
deleted file mode 100644
index 03e1c6ae..00000000
--- a/test/src/event_helpers.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-use race_api::event::Event;
-use race_api::types::PlayerJoin;
-
-type NewPlayerSpec<'a> = (&'a str, u16, u64);
-
-pub fn sync_new_players(addr_pos_balance_list: &[NewPlayerSpec], access_version: u64) -> Event {
-    let mut new_players: Vec<PlayerJoin> = Vec::default();
-
-    for (addr, pos, balance) in addr_pos_balance_list.iter() {
-        if new_players.iter().find(|p| p.addr.eq(addr)).is_some() {
-            panic!("Duplicated address: {}", addr)
-        }
-        if *balance == 0 {
-            panic!("Zero balance: {}", addr)
-        }
-        if new_players.iter().find(|p| p.position.eq(pos)).is_some() {
-            panic!("Duplicated position: {} at {}", addr, pos)
-        }
-        new_players.push(PlayerJoin {
-            addr: addr.to_string(),
-            position: *pos,
-            balance: *balance,
-            verify_key: "".to_string(),
-            access_version,
-        });
-    }
-
-    Event::Sync {
-        new_players,
-        new_servers: Default::default(),
-        transactor_addr: "".to_string(),
-        access_version,
-    }
-}
diff --git a/test/src/handler_helpers.rs b/test/src/handler_helpers.rs
index 38b4bfb2..9ca3a395 100644
--- a/test/src/handler_helpers.rs
+++ b/test/src/handler_helpers.rs
@@ -3,19 +3,18 @@ use std::mem::swap;
 use race_api::engine::GameHandler;
 use race_api::error::Result;
 use race_api::event::Event;
-use race_api::effect::Effect;
-use race_core::context::GameContext;
-use race_core::engine::{general_handle_event, general_init_state};
-use race_core::types::GameAccount;
+use race_core::context::{EventEffects, GameContext};
+use race_core::engine::general_handle_event;
 use race_encryptor::Encryptor;
 
 use crate::client_helpers::TestClient;
 
-fn parse_effect_checkpoint<H: GameHandler>(effect: &mut Effect) -> Result<()> {
-    if effect.is_checkpoint {
-        effect.__set_checkpoint_raw(vec![]);
+
+// Some event has special handling in event loop.
+fn patch_handle_event_effects(context: &mut GameContext, event_effects: &EventEffects) {
+    if event_effects.start_game {
+        context.dispatch_safe(Event::GameStart, 0);
     }
-    Ok(())
 }
 
 /// A wrapped handler for testing
@@ -28,41 +27,58 @@ where
 }
 
 impl<H: GameHandler> TestHandler<H> {
-    pub fn init_state(context: &mut GameContext, game_account: &GameAccount) -> Result<Self> {
+    pub fn init_state(context: &mut GameContext) -> Result<(Self, EventEffects)> {
         let mut new_context = context.clone();
-        let init_account = game_account.derive_init_account();
-        general_init_state(&mut new_context, &init_account)?;
-        let mut effect = new_context.derive_effect();
+        let init_account = new_context.init_account()?;
+        let mut effect = new_context.derive_effect(true);
         let handler = H::init_state(&mut effect, init_account)?;
-        new_context.apply_effect(effect)?;
+        let event_effects = new_context.apply_effect(effect)?;
+        patch_handle_event_effects(&mut new_context, &event_effects);
         swap(context, &mut new_context);
-        Ok(Self { handler })
+        Ok((Self { handler }, event_effects))
     }
 
-    pub fn handle_event(&mut self, context: &mut GameContext, event: &Event) -> Result<()> {
+    pub fn handle_event(&mut self, context: &mut GameContext, event: &Event) -> Result<EventEffects> {
         let mut new_context = context.clone();
         let encryptor = Encryptor::default();
         general_handle_event(&mut new_context, event, &encryptor)?;
-        let mut effect = new_context.derive_effect();
+        let mut effect = new_context.derive_effect(false);
         self.handler.handle_event(&mut effect, event.to_owned())?;
-        parse_effect_checkpoint::<H>(&mut effect)?;
-        new_context.apply_effect(effect)?;
+        let event_effects = new_context.apply_effect(effect)?;
+        patch_handle_event_effects(&mut new_context, &event_effects);
         swap(context, &mut new_context);
-        Ok(())
+        Ok(event_effects)
     }
 
     /// Find the event which is going to be disptached in the context, then process it.
     /// In real cases, the disptached event will be handled by an event loop.
     /// We use this function to simulate such cases, since we don't have an event loop in tests.
-    pub fn handle_dispatch_event(&mut self, context: &mut GameContext) -> Result<()> {
-        let event = context
+    pub fn handle_dispatch_event(&mut self, context: &mut GameContext) -> Result<EventEffects> {
+        let evt = context
+            .get_dispatch()
+            .as_ref()
+            .expect("No dispatch event")
+            .event
+            .clone();
+        context.cancel_dispatch();
+        println!("* Dispatch event: {}", evt);
+        self.handle_event(context, &evt)
+    }
+
+    pub fn handle_dispatch_until_no_events(
+        &mut self,
+        context: &mut GameContext,
+        clients: Vec<&mut TestClient>,
+    ) -> Result<EventEffects> {
+        let evt = context
             .get_dispatch()
             .as_ref()
             .expect("No dispatch event")
             .event
             .clone();
-        self.handle_event(context, &event)?;
-        Ok(())
+        context.cancel_dispatch();
+        println!("* Dispatch event: {}", evt);
+        self.handle_until_no_events(context, &evt, clients)
     }
 
     /// This fn keeps handling events of the following two types, until there is none:
@@ -73,18 +89,19 @@ impl<H: GameHandler> TestHandler<H> {
         context: &mut GameContext,
         event: &Event,
         mut clients: Vec<&mut TestClient>,
-    ) -> Result<()> {
+    ) -> Result<EventEffects> {
         // 1. Process the `event'(arg) --> context updated
         // 2. context may dispatch --> take care those with timeout == current timestamp
         // 3. iter clients to syn with updated context --> a couple of events
         // 4. handle these client/trans events
         let mut evts: Vec<Event> = vec![event.clone()]; // keep handling events in this vec
+        let mut event_effects = EventEffects::default();
 
         while !evts.is_empty() {
             let evt = &evts[0];
             println!("* Received event: {}", evt);
 
-            self.handle_event(context, evt)?;
+            event_effects = self.handle_event(context, evt)?;
             if evts.len() == 1 {
                 evts.clear();
             } else {
@@ -107,14 +124,14 @@ impl<H: GameHandler> TestHandler<H> {
                 println!("* Context dispatch: {:?}", dispatch);
             }
         }
-        Ok(())
+        Ok(event_effects)
     }
 
-    pub fn get_state(&self) -> &H {
+    pub fn state(&self) -> &H {
         &self.handler
     }
 
-    pub fn get_mut_state(&mut self) -> &mut H {
+    pub fn state_mut(&mut self) -> &mut H {
         &mut self.handler
     }
 }
diff --git a/test/src/lib.rs b/test/src/lib.rs
index cd1c476b..03fa8515 100644
--- a/test/src/lib.rs
+++ b/test/src/lib.rs
@@ -2,5 +2,6 @@ mod account_helpers;
 mod client_helpers;
 mod handler_helpers;
 mod transport_helpers;
-mod event_helpers;
+mod context_helpers;
+mod misc;
 pub mod prelude;
diff --git a/test/src/misc.rs b/test/src/misc.rs
new file mode 100644
index 00000000..019ad752
--- /dev/null
+++ b/test/src/misc.rs
@@ -0,0 +1,8 @@
+
+pub fn test_game_addr() -> String {
+    "TEST".into()
+}
+
+pub fn test_game_title() -> String {
+    "Unnamed Test Game".into()
+}
diff --git a/test/src/prelude.rs b/test/src/prelude.rs
index 3eab6c55..da9d4aa8 100644
--- a/test/src/prelude.rs
+++ b/test/src/prelude.rs
@@ -1,10 +1,12 @@
 pub use crate::account_helpers::*;
 pub use crate::client_helpers::*;
-pub use crate::event_helpers::*;
 pub use crate::handler_helpers::*;
 pub use crate::transport_helpers::*;
+pub use crate::context_helpers::*;
+pub use crate::misc::*;
 
 pub use race_api::error::{Error, Result};
 pub use race_api::types::{Settle, SettleOp, Transfer};
 pub use race_core::context::{DispatchEvent, GameContext};
-pub use race_core::types::GameAccount;
+pub use race_core::types::{GameAccount, ClientMode};
+pub use race_api::effect::{SubGame, EmitBridgeEvent};
diff --git a/test/src/test_context.rs b/test/src/test_context.rs
new file mode 100644
index 00000000..2c64935e
--- /dev/null
+++ b/test/src/test_context.rs
@@ -0,0 +1,6 @@
+use race_core::{context::GameContext, types::GameAccount};
+
+pub struct TestContext {
+    game_context: GameContext,
+    game_account: GameAccount,
+}
diff --git a/test/src/transport_helpers.rs b/test/src/transport_helpers.rs
index c3e1569d..c2d1d774 100644
--- a/test/src/transport_helpers.rs
+++ b/test/src/transport_helpers.rs
@@ -1,12 +1,12 @@
 use std::{
-    io::Read,
-    ops::Deref,
-    sync::{Arc, Mutex},
+    io::Read, ops::Deref, pin::Pin, sync::{Arc, Mutex}
 };
 
 use async_trait::async_trait;
+use async_stream::stream;
+use futures::Stream;
 use base64::prelude::Engine;
-use race_core::types::{CreateRecipientParams, AssignRecipientParams, RecipientAccount, RecipientClaimParams};
+use race_core::types::{CreateRecipientParams, AssignRecipientParams, RecipientAccount, RecipientClaimParams, SettleWithAddr};
 use race_api::error::{Error, Result};
 #[allow(unused_imports)]
 use race_core::{
@@ -21,14 +21,14 @@ use race_core::{
 };
 
 pub struct DummyTransport {
-    settles: Arc<Mutex<Vec<Settle>>>,
+    settles: Arc<Mutex<Vec<SettleWithAddr>>>,
     states: Arc<Mutex<Vec<GameAccount>>>,
     fail_next_settle: Arc<Mutex<bool>>,
 }
 
 impl DummyTransport {
     #[allow(dead_code)]
-    pub fn get_settles(&self) -> impl Deref<Target = Vec<Settle>> + '_ {
+    pub fn get_settles(&self) -> impl Deref<Target = Vec<SettleWithAddr>> + '_ {
         self.settles.lock().unwrap()
     }
 
@@ -62,6 +62,14 @@ impl Default for DummyTransport {
 #[async_trait]
 #[allow(unused_variables)]
 impl TransportT for DummyTransport {
+    async fn subscribe_game_account<'a>(&'a self, addr: &'a str) -> Result<Pin<Box<dyn Stream<Item = Option<GameAccount>> + Send + 'a>>> {
+        let mut states = self.states.lock().unwrap().clone();
+        Ok(Box::pin(stream! {
+            let game_account = states.remove(0);
+            yield Some(game_account);
+        }))
+    }
+
     async fn create_game_account(&self, _params: CreateGameAccountParams) -> Result<String> {
         Ok(Self::default_game_addr())
     }
@@ -123,7 +131,7 @@ impl TransportT for DummyTransport {
         Ok("".into())
     }
 
-    async fn settle_game(&self, mut params: SettleParams) -> Result<()> {
+    async fn settle_game(&self, mut params: SettleParams) -> Result<String> {
         let mut fail_next_settle = self.fail_next_settle.lock().unwrap();
         if *fail_next_settle {
             *fail_next_settle = false;
@@ -131,7 +139,7 @@ impl TransportT for DummyTransport {
         } else if params.addr.eq("TEST") {
             let mut settles = self.settles.lock().unwrap();
             settles.append(&mut params.settles);
-            Ok(())
+            Ok("".into())
         } else {
             Err(Error::GameAccountNotFound)
         }
@@ -185,7 +193,7 @@ impl TransportT for DummyTransport {
 #[cfg(test)]
 mod tests {
 
-    use race_core::types::Settle;
+    use race_core::checkpoint::CheckpointOnChain;
 
     use crate::prelude::{test_game_addr, TestClient, TestGameAccountBuilder};
 
@@ -203,16 +211,16 @@ mod tests {
     #[tokio::test]
     async fn test_get_state() -> anyhow::Result<()> {
         let transport = DummyTransport::default();
-        let alice = TestClient::player("alice");
-        let bob = TestClient::player("bob");
+        let mut alice = TestClient::player("alice");
+        let mut bob = TestClient::player("bob");
 
         let ga_0 = TestGameAccountBuilder::default().build();
         let ga_1 = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
+            .add_player(&mut alice, 100)
             .build();
         let ga_2 = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .add_player(&bob, 100)
+            .add_player(&mut alice, 100)
+            .add_player(&mut bob, 100)
             .build();
 
         let states = vec![ga_0.clone(), ga_1.clone(), ga_2.clone()];
@@ -229,12 +237,12 @@ mod tests {
     #[tokio::test]
     async fn test_settle() {
         let transport = DummyTransport::default();
-        let settles = vec![Settle::add("Alice", 100), Settle::add("Bob", 100)];
+        let settles = vec![SettleWithAddr::add("Alice", 100), SettleWithAddr::add("Bob", 100)];
         let params = SettleParams {
             addr: test_game_addr(),
             settles: settles.clone(),
             transfers: vec![],
-            checkpoint: vec![],
+            checkpoint: CheckpointOnChain::default(),
             settle_version: 0,
             next_settle_version: 1,
         };
@@ -256,7 +264,7 @@ mod tests {
             addr: test_game_addr(),
             settles: vec![],
             transfers: vec![],
-            checkpoint: vec![],
+            checkpoint: CheckpointOnChain::default(),
             settle_version: 0,
             next_settle_version: 1,
         };
diff --git a/transactor/Cargo.toml b/transactor/Cargo.toml
index 89441b8b..66d3a9be 100644
--- a/transactor/Cargo.toml
+++ b/transactor/Cargo.toml
@@ -22,6 +22,8 @@ race-transport = { workspace = true }
 race-encryptor = { workspace = true }
 race-client = { workspace = true }
 race-env = { workspace = true }
+race-local-db = { workspace = true }
+tracing-appender = { workspace = true }
 uuid = { workspace = true, features = ["v4", "fast-rng"] }
 tokio = { workspace = true, features = ["full"] }
 tokio-stream = { workspace = true, features = ["sync"] }
@@ -43,6 +45,7 @@ async-stream = { workspace = true }
 async-trait = { workspace = true }
 futures = { workspace = true }
 base64 = { workspace = true }
+sha256 = { workspace = true }
 
 [dev-dependencies]
 race-test = { path = "../test" }
diff --git a/transactor/src/component.rs b/transactor/src/component.rs
index fceb2efb..28276134 100644
--- a/transactor/src/component.rs
+++ b/transactor/src/component.rs
@@ -10,11 +10,14 @@ mod voter;
 mod wrapped_client;
 mod wrapped_handler;
 mod wrapped_transport;
+mod wrapped_storage;
+mod event_bridge;
 
 pub use event_bus::CloseReason;
 pub use broadcaster::Broadcaster;
 pub use common::Component;
 pub use common::PortsHandle;
+pub use common::ComponentEnv;
 pub use connection::{LocalConnection, RemoteConnection};
 pub use event_bus::EventBus;
 pub use event_loop::EventLoop;
@@ -25,3 +28,5 @@ pub use voter::Voter;
 pub use wrapped_client::WrappedClient;
 pub use wrapped_handler::WrappedHandler;
 pub use wrapped_transport::WrappedTransport;
+pub use wrapped_storage::WrappedStorage;
+pub use event_bridge::{EventBridgeChild, EventBridgeParent};
diff --git a/transactor/src/component/broadcaster.rs b/transactor/src/component/broadcaster.rs
index 8b564215..092ec426 100644
--- a/transactor/src/component/broadcaster.rs
+++ b/transactor/src/component/broadcaster.rs
@@ -6,14 +6,15 @@ use std::sync::Arc;
 
 use async_trait::async_trait;
 use race_api::event::Event;
-use race_core::types::{BroadcastFrame, GameAccount, TxState};
+use race_core::checkpoint::{Checkpoint, CheckpointOffChain};
+use race_core::types::{BroadcastFrame, BroadcastSync, EventHistory, TxState};
 use tokio::sync::{broadcast, Mutex};
-use tracing::{debug, error};
+use tracing::{debug, error, info};
 
 use crate::component::common::{Component, ConsumerPorts};
 use crate::frame::EventFrame;
 
-use super::CloseReason;
+use super::{CloseReason, ComponentEnv};
 
 /// Backup events in memeory, for new connected clients.  The
 /// `settle_version` and `access_version` are the values at the time
@@ -25,48 +26,51 @@ pub struct EventBackup {
     pub timestamp: u64,
     pub access_version: u64,
     pub settle_version: u64,
-}
-
-#[derive(Debug)]
-pub struct Checkpoint {
-    pub access_version: u64,
-    pub settle_version: u64,
+    pub state_sha: String,
 }
 
 #[derive(Debug)]
 pub struct EventBackupGroup {
+    pub state_sha: String,
+    pub sync: BroadcastSync,
     pub events: LinkedList<EventBackup>,
-    pub checkpoint: Checkpoint,
     pub settle_version: u64,
     pub access_version: u64,
+    pub checkpoint: Option<Checkpoint>,
 }
 
 pub struct BroadcasterContext {
-    game_addr: String,
+    id: String,
     event_backup_groups: Arc<Mutex<LinkedList<EventBackupGroup>>>,
     broadcast_tx: broadcast::Sender<BroadcastFrame>,
+    #[allow(unused)]
+    debug_mode: bool,
 }
 
 /// A component that pushes event to clients.
 pub struct Broadcaster {
-    game_addr: String,
+    id: String,
+    #[allow(unused)]
+    game_id: usize,
     event_backup_groups: Arc<Mutex<LinkedList<EventBackupGroup>>>,
     broadcast_tx: broadcast::Sender<BroadcastFrame>,
 }
 
 impl Broadcaster {
-    pub fn init(game_account: &GameAccount) -> (Self, BroadcasterContext) {
+    pub fn init(id: String, game_id: usize, debug_mode: bool) -> (Self, BroadcasterContext) {
         let event_backup_groups = Arc::new(Mutex::new(LinkedList::new()));
         let (broadcast_tx, broadcast_rx) = broadcast::channel(10);
         drop(broadcast_rx);
         (
             Self {
-                game_addr: game_account.addr.clone(),
+                id: id.clone(),
+                game_id,
                 event_backup_groups: event_backup_groups.clone(),
                 broadcast_tx: broadcast_tx.clone(),
             },
             BroadcasterContext {
-                game_addr: game_account.addr.clone(),
+                id,
+                debug_mode,
                 event_backup_groups,
                 broadcast_tx,
             },
@@ -77,88 +81,142 @@ impl Broadcaster {
         self.broadcast_tx.subscribe()
     }
 
-    pub async fn retrieve_histories(&self, settle_version: u64) -> Vec<BroadcastFrame> {
+    pub async fn get_checkpoint(&self, settle_version: u64) -> Option<CheckpointOffChain> {
+
         let event_backup_groups = self.event_backup_groups.lock().await;
+        info!("Get checkpoint with settle_version = {}", settle_version);
+
+        for group in event_backup_groups.iter() {
+            if group.settle_version == settle_version {
+                info!("Found checkpoint");
+                return group.checkpoint.as_ref().map(|cp| cp.derive_offchain_part());
+            }
+        }
+        info!("Found checkpoint");
+        None
+    }
 
-        let mut histories: Vec<BroadcastFrame> = Vec::new();
+    pub async fn retrieve_histories(&self, settle_version: u64) -> Vec<BroadcastFrame> {
+        // info!(
+        //     "{} Retrieve the histories, settle_version: {}",
+        //     Self::name(),
+        //     settle_version
+        // );
+
+        let mut frames: Vec<BroadcastFrame> = Vec::new();
+        let event_backup_groups = self.event_backup_groups.lock().await;
 
         for group in event_backup_groups.iter() {
+            let mut histories: Vec<EventHistory> = Vec::new();
             if group.settle_version >= settle_version {
+                info!("Broadcast sync {:?}", group.sync);
+                frames.push(BroadcastFrame::Sync {
+                    sync: group.sync.clone(),
+                });
                 for event in group.events.iter() {
-                    histories.push(BroadcastFrame::Event {
-                        game_addr: self.game_addr.clone(),
+                    histories.push(EventHistory {
                         event: event.event.clone(),
                         timestamp: event.timestamp,
-                    })
+                        state_sha: event.state_sha.clone(),
+                    });
                 }
+                frames.push(BroadcastFrame::EventHistories {
+                    game_addr: self.id.clone(),
+                    checkpoint_off_chain: group.checkpoint.as_ref().map(|c| c.derive_offchain_part()),
+                    histories,
+                    state_sha: group.state_sha.clone(),
+                })
             }
         }
 
-        histories
+        frames
     }
 }
 
 #[async_trait]
 impl Component<ConsumerPorts, BroadcasterContext> for Broadcaster {
-    fn name(&self) -> &str {
+    fn name() -> &'static str {
         "Broadcaster"
     }
 
-    async fn run(mut ports: ConsumerPorts, ctx: BroadcasterContext) -> CloseReason {
+    async fn run(
+        mut ports: ConsumerPorts,
+        ctx: BroadcasterContext,
+        env: ComponentEnv,
+    ) -> CloseReason {
         while let Some(event) = ports.recv().await {
             match event {
                 EventFrame::SendMessage { message } => {
                     let r = ctx.broadcast_tx.send(BroadcastFrame::Message {
-                        game_addr: ctx.game_addr.clone(),
+                        game_addr: ctx.id.clone(),
                         message,
                     });
 
                     if let Err(e) = r {
                         // Usually it means no receivers
-                        debug!("Failed to broadcast event: {:?}", e);
+                        debug!("{} Failed to broadcast event: {:?}", env.log_prefix, e);
                     }
                 }
+
                 EventFrame::Checkpoint {
                     access_version,
                     settle_version,
+                    checkpoint,
+                    state_sha,
+                    ..
                 } => {
+                    info!(
+                        "{} Create new history group (via Checkpoint) with access_version = {}, settle_version = {}",
+                        env.log_prefix, access_version, settle_version
+                    );
                     let mut event_backup_groups = ctx.event_backup_groups.lock().await;
 
-                    let checkpoint = Checkpoint {
+                    event_backup_groups.push_back(EventBackupGroup {
+                        sync: BroadcastSync::new(access_version),
+                        state_sha,
+                        events: LinkedList::new(),
                         access_version,
                         settle_version,
-                    };
+                        checkpoint: Some(checkpoint),
+                    });
+                }
+                EventFrame::InitState { access_version, settle_version, .. } => {
+                    info!(
+                        "{} Create new history group (via InitState) with access_version = {}, settle_version = {}",
+                        env.log_prefix, access_version, settle_version
+                    );
+                    let mut event_backup_groups = ctx.event_backup_groups.lock().await;
 
                     event_backup_groups.push_back(EventBackupGroup {
+                        sync: BroadcastSync::new(access_version),
                         events: LinkedList::new(),
-                        checkpoint,
                         access_version,
                         settle_version,
+                        checkpoint: None,
+                        state_sha: "".into(),
                     });
+
                 }
                 EventFrame::TxState { tx_state } => match tx_state {
-                    TxState::PlayerConfirming {
-                        confirm_players,
-                        access_version,
-                    } => {
-                        let tx_state = TxState::PlayerConfirming {
-                            confirm_players,
-                            access_version,
-                        };
+                    TxState::SettleSucceed { .. } => {
+                        let r = ctx.broadcast_tx.send(BroadcastFrame::TxState { tx_state });
 
+                        if let Err(e) = r {
+                            debug!("{} Failed to broadcast event: {:?}", env.log_prefix, e);
+                        }
+                    }
+                    TxState::PlayerConfirming { .. } => {
                         let r = ctx.broadcast_tx.send(BroadcastFrame::TxState { tx_state });
 
                         if let Err(e) = r {
-                            debug!("Failed to broadcast event: {:?}", e);
+                            debug!("{} Failed to broadcast event: {:?}", env.log_prefix, e);
                         }
                     }
-                    TxState::PlayerConfirmingFailed(access_version) => {
-                        let r = ctx.broadcast_tx.send(BroadcastFrame::TxState {
-                            tx_state: TxState::PlayerConfirmingFailed(access_version),
-                        });
+                    TxState::PlayerConfirmingFailed(_) => {
+                        let r = ctx.broadcast_tx.send(BroadcastFrame::TxState { tx_state });
 
                         if let Err(e) = r {
-                            debug!("Failed to broadcast event: {:?}", e);
+                            debug!("{} Failed to broadcast event: {:?}", env.log_prefix, e);
                         }
                     }
                 },
@@ -167,8 +225,10 @@ impl Component<ConsumerPorts, BroadcasterContext> for Broadcaster {
                     access_version,
                     settle_version,
                     timestamp,
+                    state_sha,
+                    ..
                 } => {
-                    debug!("Broadcaster receive event: {}", event);
+                    // info!("{} Broadcaster receive event: {}", env.log_prefix, event);
                     let mut event_backup_groups = ctx.event_backup_groups.lock().await;
 
                     if let Some(current) = event_backup_groups.back_mut() {
@@ -177,24 +237,59 @@ impl Component<ConsumerPorts, BroadcasterContext> for Broadcaster {
                             settle_version,
                             access_version,
                             timestamp,
+                            state_sha: state_sha.clone(),
                         });
                     } else {
-                        error!("Received event without checkpoint");
+                        error!("{} Received event without checkpoint", env.log_prefix);
                     }
                     // Keep 10 groups at most
                     if event_backup_groups.len() > 10 {
                         event_backup_groups.pop_front();
                     }
+                    drop(event_backup_groups);
 
                     let r = ctx.broadcast_tx.send(BroadcastFrame::Event {
-                        game_addr: ctx.game_addr.clone(),
+                        game_addr: ctx.id.clone(),
                         event,
                         timestamp,
+                        state_sha,
                     });
 
                     if let Err(e) = r {
                         // Usually it means no receivers
-                        debug!("Failed to broadcast event: {:?}", e);
+                        debug!("{} Failed to broadcast event: {:?}", env.log_prefix, e);
+                    }
+                }
+                EventFrame::Sync {
+                    new_servers,
+                    new_players,
+                    access_version,
+                    transactor_addr,
+                } => {
+                    let sync = BroadcastSync {
+                        new_players,
+                        new_servers,
+                        access_version,
+                        transactor_addr,
+                    };
+
+                    let mut event_backup_groups = ctx.event_backup_groups.lock().await;
+                    if let Some(current) = event_backup_groups.back_mut() {
+                        info!("{} Merge sync: {:?}", env.log_prefix, sync);
+                        current.sync.merge(&sync);
+                    } else {
+                        error!("{} Sync dropped", env.log_prefix);
+                    }
+                    drop(event_backup_groups);
+
+                    let broadcast_frame = BroadcastFrame::Sync { sync };
+                    let r = ctx.broadcast_tx.send(broadcast_frame);
+
+                    if let Err(e) = r {
+                        debug!(
+                            "{} Failed to broadcast node updates: {:?}",
+                            env.log_prefix, e
+                        );
                     }
                 }
                 EventFrame::Shutdown => {
@@ -216,14 +311,15 @@ mod tests {
 
     #[tokio::test]
     async fn test_broadcast_event() {
-        let alice = TestClient::player("alice");
-        let bob = TestClient::player("bob");
+        let mut alice = TestClient::player("alice");
+        let mut bob = TestClient::player("bob");
         let game_account = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .add_player(&bob, 100)
+            .add_player(&mut alice, 100)
+            .add_player(&mut bob, 100)
             .build();
-        let (broadcaster, ctx) = Broadcaster::init(&game_account);
-        let handle = broadcaster.start(ctx);
+
+        let (broadcaster, ctx) = Broadcaster::init(game_account.addr.clone(), 0, true);
+        let handle = broadcaster.start("", ctx);
         let mut rx = broadcaster.get_broadcast_rx();
 
         // BroadcastFrame::Event
@@ -233,18 +329,20 @@ mod tests {
                 settle_version: 10,
                 timestamp: 0,
                 event: Event::Custom {
-                    sender: "Alice".into(),
+                    sender: alice.id(),
                     raw: "CUSTOM EVENT".into(),
                 },
+                state_sha: "".into(),
             };
 
             let broadcast_frame = BroadcastFrame::Event {
                 game_addr: game_account.addr,
                 timestamp: 0,
                 event: Event::Custom {
-                    sender: "Alice".into(),
+                    sender: alice.id(),
                     raw: "CUSTOM EVENT".into(),
                 },
+                state_sha: "".into(),
             };
 
             handle.send_unchecked(event_frame).await;
@@ -261,7 +359,8 @@ mod tests {
                     balance: 100,
                     access_version: 10,
                     verify_key: "alice".into(),
-                }],
+                }
+                    .into()],
                 access_version: 10,
             };
             let event_frame = EventFrame::TxState {
diff --git a/transactor/src/component/common.rs b/transactor/src/component/common.rs
index 573908bc..a0b1dee5 100644
--- a/transactor/src/component/common.rs
+++ b/transactor/src/component/common.rs
@@ -5,12 +5,14 @@ use tokio::{
 };
 use tracing::{info, warn};
 
-use crate::frame::EventFrame;
+use crate::{frame::EventFrame, utils::addr_shorthand};
 
-use super::event_bus::CloseReason;
+use super::{event_bus::CloseReason};
 
 /// An interface for a component that can be attached to the event bus.
 pub trait Attachable {
+    fn id(&self) -> &str;
+
     /// Return the input channel of current component.
     /// Return `None` when the component does not accept input.
     fn input(&mut self) -> Option<mpsc::Sender<EventFrame>>;
@@ -28,14 +30,16 @@ pub struct PortsHandleInner {
 }
 
 pub struct PortsHandle {
+    pub id: String,
     input_tx: Option<mpsc::Sender<EventFrame>>,
     output_rx: Option<mpsc::Receiver<EventFrame>>,
     join_handle: JoinHandle<CloseReason>,
 }
 
 impl PortsHandle {
-    fn from_inner(value: PortsHandleInner, join_handle: JoinHandle<CloseReason>) -> Self {
+    fn from_inner<S: Into<String>>(id: S, value: PortsHandleInner, join_handle: JoinHandle<CloseReason>) -> Self {
         Self {
+            id: id.into(),
             input_tx: value.input_tx,
             output_rx: value.output_rx,
             join_handle,
@@ -68,6 +72,10 @@ impl PortsHandle {
 }
 
 impl Attachable for PortsHandle {
+    fn id(&self) -> &str {
+        self.id.as_str()
+    }
+
     fn input(&mut self) -> Option<mpsc::Sender<EventFrame>> {
         if self.input_tx.is_some() {
             self.input_tx.clone()
@@ -125,6 +133,7 @@ impl ProducerPorts {
         self.tx.send(frame).await
     }
 
+    #[allow(dead_code)]
     pub fn is_tx_closed(&self) -> bool {
         self.tx.is_closed()
     }
@@ -170,6 +179,12 @@ impl PipelinePorts {
         self.tx.send(frame).await
     }
 
+    pub fn clone_as_producer(&self) -> ProducerPorts {
+        ProducerPorts {
+            tx: self.tx.clone()
+        }
+    }
+
     pub async fn send(&self, frame: EventFrame) {
         match self.tx.send(frame).await {
             Ok(_) => (),
@@ -200,19 +215,31 @@ impl Ports for PipelinePorts {
     }
 }
 
+pub struct ComponentEnv {
+    pub log_prefix: String,
+}
+
+impl ComponentEnv {
+    pub fn new(addr: &str, component_name: &str) -> Self {
+        let addr_short = addr_shorthand(addr);
+        Self { log_prefix: format!("[{}|{}]", addr_short, component_name)}
+    }
+}
+
 #[async_trait]
 pub trait Component<P, C>
 where
     P: Ports + 'static,
     C: Send + 'static,
 {
-    fn name(&self) -> &str;
+    fn name() -> &'static str;
 
-    fn start(&self, context: C) -> PortsHandle {
-        info!("Starting component: {}", self.name());
+    fn start(&self, addr: &str, context: C) -> PortsHandle {
+        info!("Starting component: {}", Self::name());
         let (ports, ports_handle_inner) = P::create();
-        let join_handle = tokio::spawn(async move { Self::run(ports, context).await });
-        PortsHandle::from_inner(ports_handle_inner, join_handle)
+        let env = ComponentEnv::new(addr, Self::name());
+        let join_handle = tokio::spawn(async move { Self::run(ports, context, env).await });
+        PortsHandle::from_inner(Self::name(), ports_handle_inner, join_handle)
     }
-    async fn run(ports: P, context: C) -> CloseReason;
+    async fn run(ports: P, context: C, env: ComponentEnv) -> CloseReason;
 }
diff --git a/transactor/src/component/connection.rs b/transactor/src/component/connection.rs
index d62e898f..469e7618 100644
--- a/transactor/src/component/connection.rs
+++ b/transactor/src/component/connection.rs
@@ -20,17 +20,15 @@ use jsonrpsee::{
     rpc_params,
     ws_client::{WsClient, WsClientBuilder},
 };
+use race_api::error::{Error, Result};
+use race_core::types::{BroadcastFrame, SubscribeEventParams};
 use race_core::{
     connection::ConnectionT,
     encryptor::EncryptorT,
     types::{AttachGameParams, ExitGameParams, SubmitEventParams},
 };
-use race_api::error::{Error, Result};
-use race_core::{
-    types::{BroadcastFrame, SubscribeEventParams},
-};
 
-use crate::frame::EventFrame;
+use crate::{frame::EventFrame, utils::current_timestamp};
 use crate::utils::base64_decode;
 use crate::{component::common::Attachable, utils::base64_encode};
 
@@ -52,6 +50,7 @@ impl ConnectionT for LocalConnection {
         self.output_tx
             .send(EventFrame::SendEvent {
                 event: params.event,
+                timestamp: current_timestamp(),
             })
             .await
             .map_err(|e| Error::InternalError(e.to_string()))
@@ -74,6 +73,10 @@ impl LocalConnection {
 }
 
 impl Attachable for LocalConnection {
+    fn id(&self) -> &str {
+        "LocalConnection"
+    }
+
     fn input(&mut self) -> Option<mpsc::Sender<EventFrame>> {
         None
     }
@@ -135,21 +138,15 @@ impl RemoteConnection {
         })
     }
 
-    // async fn request(&self, game_addr: &str, method: &str) {
-    //     let mut rpc_client = self.rpc_client.lock().await;
-    //     let mut retries = 0;
-
-    // }
-
     fn make_request<P>(&self, game_addr: &str, params: &P) -> Result<ArrayParams>
     where
         P: BorshSerialize,
     {
-        let params_bytes = params.try_to_vec()?;
+        let params_bytes = borsh::to_vec(&params)?;
         let sig = self
             .encryptor
             .sign(&params_bytes, self.server_addr.clone())?;
-        let sig_bytes = sig.try_to_vec()?;
+        let sig_bytes = borsh::to_vec(&sig)?;
         let p = base64_encode(&params_bytes);
         let s = base64_encode(&sig_bytes);
         Ok(rpc_params![game_addr, p, s])
@@ -159,7 +156,7 @@ impl RemoteConnection {
     where
         P: BorshSerialize,
     {
-        let params_bytes = params.try_to_vec()?;
+        let params_bytes = borsh::to_vec(&params)?;
         let p = base64_encode(&params_bytes);
         Ok(rpc_params![game_addr, p])
     }
@@ -185,10 +182,12 @@ impl RemoteConnection {
                 Ok(ret) => return Ok(ret),
                 Err(RestartNeeded(e)) => {
                     // For reconnecting
-                    warn!("Try reconnect due to error: {:?}", e);
+                    warn!("Try reconnect due to error[{}]: {:?}", method, e);
                     *rpc_client = None;
                 }
-                Err(_) => (),
+                Err(e) => {
+                    warn!("Error in request[{}]: {:?}", method, e);
+                },
             }
 
             if retries < self.max_retries {
diff --git a/transactor/src/component/event_bridge.rs b/transactor/src/component/event_bridge.rs
new file mode 100644
index 00000000..df2a90c9
--- /dev/null
+++ b/transactor/src/component/event_bridge.rs
@@ -0,0 +1,255 @@
+use crate::frame::{EventFrame, SignalFrame};
+use async_trait::async_trait;
+use tokio::sync::{broadcast, mpsc};
+use tracing::{info, log::error};
+
+use super::{common::PipelinePorts, CloseReason, Component, ComponentEnv};
+
+#[allow(dead_code)]
+pub struct EventBridgeParentContext {
+    tx: broadcast::Sender<EventFrame>,
+    rx: mpsc::Receiver<EventFrame>,
+    signal_tx: mpsc::Sender<SignalFrame>,
+}
+
+#[derive(Clone, Debug)]
+pub struct EventBridgeParent {
+    tx: mpsc::Sender<EventFrame>,
+    bc: broadcast::Sender<EventFrame>,
+}
+
+pub struct EventBridgeChildContext {
+    pub game_id: usize,
+    tx: mpsc::Sender<EventFrame>,
+    rx: broadcast::Receiver<EventFrame>,
+}
+
+pub struct EventBridgeChild {
+    pub game_id: usize,
+}
+
+impl EventBridgeParent {
+    pub fn init(signal_tx: mpsc::Sender<SignalFrame>) -> (Self, EventBridgeParentContext) {
+        let (mpsc_tx, mpsc_rx) = mpsc::channel(10);
+        let (bc_tx, _bc_rx) = broadcast::channel(10);
+        (
+            Self {
+                tx: mpsc_tx,
+                bc: bc_tx.clone(),
+            },
+            EventBridgeParentContext {
+                tx: bc_tx,
+                rx: mpsc_rx,
+                signal_tx,
+            },
+        )
+    }
+
+    pub fn derive_child(&self, game_id: usize) -> (EventBridgeChild, EventBridgeChildContext) {
+        (
+            EventBridgeChild {
+                game_id: game_id.clone(),
+            },
+            EventBridgeChildContext {
+                game_id,
+                tx: self.tx.clone(),
+                rx: self.bc.subscribe(),
+            },
+        )
+    }
+}
+
+impl EventBridgeParent {
+    /// Read event from both the local event bus and the bridge.
+    /// Return (true, event) when the event is from the bridge.
+    /// Return None when bridge is closed.
+    async fn read_event(
+        ports: &mut PipelinePorts,
+        rx: &mut mpsc::Receiver<EventFrame>,
+    ) -> Option<(bool, EventFrame)> {
+        tokio::select! {
+            e = rx.recv() => {
+                if let Some(e) = e {
+                    Some((true, e))
+                } else {
+                    None
+                }
+            },
+            e = ports.recv() => {
+                if let Some(e) = e {
+                    Some((false, e))
+                } else {
+                    None
+                }
+            },
+        }
+    }
+}
+
+#[async_trait]
+impl Component<PipelinePorts, EventBridgeParentContext> for EventBridgeParent {
+    fn name() -> &'static str {
+        "Event Bridge (Parent)"
+    }
+
+    async fn run(
+        mut ports: PipelinePorts,
+        mut ctx: EventBridgeParentContext,
+        env: ComponentEnv,
+    ) -> CloseReason {
+        while let Some((from_bridge, event_frame)) = Self::read_event(&mut ports, &mut ctx.rx).await
+        {
+            if from_bridge {
+                match event_frame {
+                    EventFrame::SendBridgeEvent {
+                        from,
+                        dest,
+                        event,
+                        access_version,
+                        settle_version,
+                        checkpoint,
+                    } => {
+                        info!("{} Receives event: {}", env.log_prefix, event);
+                        ports
+                            .send(EventFrame::RecvBridgeEvent {
+                                from,
+                                dest,
+                                event,
+                                access_version,
+                                settle_version,
+                                checkpoint,
+                            })
+                            .await;
+                    }
+                    _ => (),
+                }
+            } else {
+                match event_frame {
+                    EventFrame::LaunchSubGame { spec } => {
+                        let f = SignalFrame::LaunchSubGame { spec: *spec };
+                        if let Err(e) = ctx.signal_tx.send(f).await {
+                            error!("{} Failed to send: {}", env.log_prefix, e);
+                        }
+                    }
+                    EventFrame::Shutdown => {
+                        if !ctx.tx.is_empty() {
+                            info!("{} Sends Shutdown", env.log_prefix);
+                            if let Err(e) = ctx.tx.send(event_frame) {
+                                error!("{} Failed to send: {}", env.log_prefix, e);
+                            }
+                        }
+                        break;
+                    }
+                    EventFrame::SendBridgeEvent { dest, .. } if dest != 0 => {
+                        info!("{} Sends event: {}", env.log_prefix, event_frame);
+                        if let Err(e) = ctx.tx.send(event_frame) {
+                            error!("{} Failed to send: {}", env.log_prefix, e);
+                        }
+                    }
+                    EventFrame::Sync { .. } => {
+                        if !ctx.tx.is_empty() {
+                            info!("{} Sends event: {}", env.log_prefix, event_frame);
+                            if let Err(e) = ctx.tx.send(event_frame) {
+                                error!("{} Failed to send: {}", env.log_prefix, e);
+                            }
+                        }
+                    }
+                    _ => continue,
+                }
+            }
+        }
+
+        CloseReason::Complete
+    }
+}
+
+impl EventBridgeChild {
+    /// Read event from both the local event bus and the bridge.
+    /// Return (true, event) when the event is from the bridge.
+    /// Return None when bridge is closed.
+    async fn read_event(
+        ports: &mut PipelinePorts,
+        rx: &mut broadcast::Receiver<EventFrame>,
+    ) -> Option<(bool, EventFrame)> {
+        tokio::select! {
+            e = rx.recv() => {
+                if let Ok(e) = e {
+                    Some((true, e))
+                } else {
+                     None
+                }
+            },
+            e = ports.recv() => {
+                if let Some(e) = e {
+                    Some((false, e))
+                } else {
+                    None
+                }
+            }
+        }
+    }
+}
+
+#[async_trait]
+impl Component<PipelinePorts, EventBridgeChildContext> for EventBridgeChild {
+    fn name() -> &'static str {
+        "Event Bridge (Child)"
+    }
+
+    async fn run(
+        mut ports: PipelinePorts,
+        mut ctx: EventBridgeChildContext,
+        env: ComponentEnv,
+    ) -> CloseReason {
+        while let Some((from_bridge, event_frame)) = Self::read_event(&mut ports, &mut ctx.rx).await
+        {
+            if from_bridge {
+                match event_frame {
+                    EventFrame::Shutdown => {
+                        info!("{} Receives Shutdown, quit", env.log_prefix);
+                        ports.send(event_frame).await;
+                        break;
+                    }
+                    EventFrame::Sync { .. } => {
+                        info!("{} Receives event: {}", env.log_prefix, event_frame);
+                        ports.send(event_frame).await;
+                    }
+                    EventFrame::SendBridgeEvent {
+                        from,
+                        dest,
+                        event,
+                        access_version,
+                        settle_version,
+                        checkpoint,
+                    } if dest == ctx.game_id => {
+                        info!("{} Receives event: {}", env.log_prefix, event);
+                        ports
+                            .send(EventFrame::RecvBridgeEvent {
+                                from,
+                                dest,
+                                event,
+                                access_version,
+                                settle_version,
+                                checkpoint,
+                            })
+                            .await;
+                    }
+                    _ => {}
+                }
+            } else {
+                match event_frame {
+                    EventFrame::Shutdown => break,
+                    EventFrame::SendBridgeEvent { dest, .. } if dest != ctx.game_id => {
+                        info!("{} Sends event: {}", env.log_prefix, event_frame);
+                        if let Err(e) = ctx.tx.send(event_frame).await {
+                            error!("{} Failed to send: {}", env.log_prefix, e);
+                        }
+                    }
+                    _ => continue,
+                }
+            }
+        }
+
+        CloseReason::Complete
+    }
+}
diff --git a/transactor/src/component/event_bus.rs b/transactor/src/component/event_bus.rs
index 4cdb442d..f5f25c12 100644
--- a/transactor/src/component/event_bus.rs
+++ b/transactor/src/component/event_bus.rs
@@ -6,15 +6,52 @@ use tracing::{error, warn};
 
 use crate::component::common::Attachable;
 use crate::frame::EventFrame;
+use crate::utils::addr_shorthand;
 
 /// An event bus that passes the events between different components.
 pub struct EventBus {
+    #[allow(unused)]
+    addr: String,
     tx: mpsc::Sender<EventFrame>,
-    attached_txs: Arc<Mutex<Vec<mpsc::Sender<EventFrame>>>>,
+    attached_txs: Arc<Mutex<Vec<(String, mpsc::Sender<EventFrame>)>>>,
     close_rx: watch::Receiver<bool>,
 }
 
 impl EventBus {
+    pub fn new(addr: String) -> Self {
+        let (close_tx, close_rx) = watch::channel(false);
+        let (tx, mut rx) = mpsc::channel::<EventFrame>(32);
+        let txs: Arc<Mutex<Vec<(String, mpsc::Sender<EventFrame>)>>> = Arc::new(Mutex::new(vec![]));
+        let attached_txs = txs.clone();
+        let addr_1 = addr_shorthand(&addr);
+
+        tokio::spawn(async move {
+            while let Some(msg) = rx.recv().await {
+                let txs = attached_txs.lock().await;
+                for (id, t) in txs.iter() {
+                    if t.send(msg.clone()).await.is_err() {
+                        warn!(
+                            "[{}] Failed to send message: {} to component: {}",
+                            addr_1,
+                            msg,
+                            id
+                        );
+                    }
+                }
+                if matches!(msg, EventFrame::Shutdown) {
+                    close_tx.send(true).unwrap();
+                    break;
+                }
+            }
+        });
+        Self {
+            addr,
+            tx,
+            attached_txs: txs,
+            close_rx,
+        }
+    }
+
     pub async fn attach<T>(&self, attachable: &mut T)
     where
         T: Attachable,
@@ -50,7 +87,7 @@ impl EventBus {
 
         if let Some(tx) = attachable.input() {
             let mut txs = self.attached_txs.lock().await;
-            txs.push(tx.clone());
+            txs.push((attachable.id().to_string(), tx.clone()));
         }
     }
 
@@ -64,30 +101,7 @@ impl EventBus {
 
 impl Default for EventBus {
     fn default() -> Self {
-        let (close_tx, close_rx) = watch::channel(false);
-        let (tx, mut rx) = mpsc::channel::<EventFrame>(32);
-        let txs: Arc<Mutex<Vec<mpsc::Sender<EventFrame>>>> = Arc::new(Mutex::new(vec![]));
-        let attached_txs = txs.clone();
-
-        tokio::spawn(async move {
-            while let Some(msg) = rx.recv().await {
-                let txs = attached_txs.lock().await;
-                for t in txs.iter() {
-                    if t.send(msg.clone()).await.is_err() {
-                        warn!("Failed to send message");
-                    }
-                }
-                if matches!(msg, EventFrame::Shutdown) {
-                    close_tx.send(true).unwrap();
-                    break;
-                }
-            }
-        });
-        Self {
-            tx,
-            attached_txs: txs,
-            close_rx,
-        }
+        Self::new("".to_string())
     }
 }
 
@@ -101,7 +115,7 @@ pub enum CloseReason {
 #[cfg(test)]
 mod tests {
 
-    use crate::component::common::{Component, ConsumerPorts, ProducerPorts};
+    use crate::component::{common::{Component, ConsumerPorts, ProducerPorts}, ComponentEnv};
 
     use super::*;
     use async_trait::async_trait;
@@ -115,11 +129,11 @@ mod tests {
 
     #[async_trait]
     impl Component<ProducerPorts, TestProducerCtx> for TestProducer {
-        fn name(&self) -> &str {
+        fn name() -> &'static str {
             "Test Producer"
         }
 
-        async fn run(ports: ProducerPorts, _ctx: TestProducerCtx) -> CloseReason {
+        async fn run(ports: ProducerPorts, _ctx: TestProducerCtx, _env: ComponentEnv) -> CloseReason {
             loop {
                 println!("Producer started");
                 let event = EventFrame::Sync {
@@ -158,11 +172,11 @@ mod tests {
 
     #[async_trait]
     impl Component<ConsumerPorts, TestConsumerCtx> for TestConsumer {
-        fn name(&self) -> &str {
+        fn name() -> &'static str {
             "Test Consumer"
         }
 
-        async fn run(mut ports: ConsumerPorts, ctx: TestConsumerCtx) -> CloseReason {
+        async fn run(mut ports: ConsumerPorts, ctx: TestConsumerCtx, _env: ComponentEnv) -> CloseReason {
             println!("Consumer started");
             loop {
                 match ports.recv().await {
@@ -193,8 +207,8 @@ mod tests {
         let (c, c_ctx) = TestConsumer::init();
         let eb = EventBus::default();
 
-        let mut p_handle = p.start(p_ctx);
-        let mut c_handle = c.start(c_ctx);
+        let mut p_handle = p.start("producer", p_ctx,);
+        let mut c_handle = c.start("consumer", c_ctx);
 
         eb.attach(&mut p_handle).await;
         eb.attach(&mut c_handle).await;
diff --git a/transactor/src/component/event_loop.rs b/transactor/src/component/event_loop.rs
index 6aa6879a..73b03c6e 100644
--- a/transactor/src/component/event_loop.rs
+++ b/transactor/src/component/event_loop.rs
@@ -1,4 +1,6 @@
-use std::time::{Duration, UNIX_EPOCH};
+use race_api::effect::SubGame;
+use sha256::digest;
+use std::time::Duration;
 
 use async_trait::async_trait;
 use race_api::error::Error;
@@ -11,8 +13,10 @@ use crate::component::common::{Component, PipelinePorts};
 use crate::component::event_bus::CloseReason;
 use crate::component::wrapped_handler::WrappedHandler;
 use crate::frame::EventFrame;
-use crate::utils::addr_shorthand;
-use race_core::types::{ClientMode, GameAccount};
+use race_core::types::{ClientMode, GameAccount, GameMode, GamePlayer, SubGameSpec};
+use crate::utils::current_timestamp;
+
+use super::ComponentEnv;
 
 fn log_execution_context(ctx: &GameContext, evt: &Event) {
     info!("Execution context");
@@ -26,7 +30,8 @@ fn log_execution_context(ctx: &GameContext, evt: &Event) {
 pub struct EventLoopContext {
     handler: WrappedHandler,
     game_context: GameContext,
-    mode: ClientMode,
+    client_mode: ClientMode,
+    game_mode: GameMode,
 }
 
 pub trait WrappedGameHandler: Send {
@@ -37,72 +42,132 @@ pub trait WrappedGameHandler: Send {
 
 pub struct EventLoop {}
 
-async fn handle(
+async fn handle_event(
     handler: &mut WrappedHandler,
     game_context: &mut GameContext,
     event: Event,
     ports: &PipelinePorts,
-
-    #[allow(unused)] mode: ClientMode,
+    client_mode: ClientMode,
+    game_mode: GameMode,
+    timestamp: u64,
+    env: &ComponentEnv,
 ) -> Option<CloseReason> {
     info!(
-        "{} Handle event: {}",
-        addr_shorthand(game_context.get_game_addr()),
-        event
+        "{} Handle event: {}, timestamp: {}",
+        env.log_prefix,
+        event,
+        timestamp
     );
 
-    let access_version = game_context.get_access_version();
-    let settle_version = game_context.get_settle_version();
+    game_context.set_timestamp(timestamp);
+    let access_version = game_context.access_version();
+    let settle_version = game_context.settle_version();
 
     match handler.handle_event(game_context, &event) {
         Ok(effects) => {
-            ports
-                .send(EventFrame::Broadcast {
-                    event,
-                    access_version,
-                    settle_version,
-                    timestamp: game_context.get_timestamp(),
-                })
-                .await;
+            let state = game_context.get_handler_state_raw().to_owned();
+            let state_sha = digest(&state);
+            // info!("{} Game state SHA: {}", env.log_prefix, state_sha);
 
-            if game_context.is_checkpoint() {
+            // Broacast the event to clients
+            if client_mode == ClientMode::Transactor {
                 ports
-                    .send(EventFrame::Checkpoint {
-                        access_version: game_context.get_access_version(),
-                        settle_version: game_context.get_settle_version(),
+                    .send(EventFrame::Broadcast {
+                        event,
+                        access_version,
+                        settle_version,
+                        timestamp,
+                        state_sha: state_sha.clone(),
                     })
                     .await;
             }
 
+            // Update the local client
             ports
                 .send(EventFrame::ContextUpdated {
                     context: Box::new(game_context.clone()),
                 })
                 .await;
 
-            // We do optimistic updates here
-            if let Some(effects) = effects {
+            // Start game
+            if client_mode == ClientMode::Transactor && effects.start_game {
+                ports
+                    .send(EventFrame::GameStart {
+                        access_version: game_context.access_version(),
+                    })
+                    .await;
+            }
+
+            // Send the settlement when there's one
+            if let Some(checkpoint) = effects.checkpoint {
+                let checkpoint_size = checkpoint.get_data(game_context.game_id()).map(|d| d.len());
                 info!(
-                    "{} Send settlements: {:?}",
-                    addr_shorthand(game_context.get_game_addr()),
-                    effects
+                    "{} Create checkpoint, settle_version: {}, size: {:?}, state_sha: {}",
+                    env.log_prefix,
+                    game_context.settle_version(),
+                    checkpoint_size,
+                    state_sha
                 );
+
                 ports
-                    .send(EventFrame::Settle {
+                    .send(EventFrame::Checkpoint {
+                        access_version: game_context.access_version(),
+                        settle_version: game_context.settle_version(),
+                        previous_settle_version: settle_version,
+                        checkpoint,
                         settles: effects.settles,
                         transfers: effects.transfers,
-                        checkpoint: effects.checkpoint,
-                        settle_version,
+                        state_sha: state_sha.clone(),
                     })
                     .await;
             }
+
+            // Launch sub games
+            if game_mode == GameMode::Main {
+                for sub_game in effects.launch_sub_games {
+                    info!("{} Launch sub game: {}", env.log_prefix, sub_game.id);
+                    let cp = game_context.checkpoint_mut();
+                    let SubGame {bundle_addr, id, mut init_account} = sub_game;
+                    // Use the existing checkpoint when possible.
+                    init_account.checkpoint = cp.get_data(id);
+
+                    let ef = EventFrame::LaunchSubGame {
+                        spec: Box::new(SubGameSpec {
+                            game_addr: game_context.game_addr().to_owned(),
+                            game_id: id,
+                            bundle_addr,
+                            nodes: game_context.get_nodes().into(),
+                            access_version: game_context.access_version(),
+                            settle_version,
+                            init_account,
+                        }),
+                    };
+                    ports.send(ef).await;
+                }
+            }
+
+            // Emit bridge events
+            if client_mode == ClientMode::Transactor {
+                for be in effects.bridge_events {
+                    info!("{} Send bridge event, dest: {}, checkpoint sha: {}", env.log_prefix, be.dest, state_sha);
+                    let ef = EventFrame::SendBridgeEvent {
+                        from: game_context.game_id(),
+                        dest: be.dest,
+                        event: Event::Bridge {
+                            dest: be.dest,
+                            raw: be.raw,
+                            join_players: be.join_players,
+                        },
+                        access_version: game_context.access_version(),
+                        settle_version: game_context.settle_version(),
+                        checkpoint: state.clone(),
+                    };
+                    ports.send(ef).await;
+                }
+            }
         }
         Err(e) => {
-            warn!(
-                "{} Handle event error: {}",
-                addr_shorthand(game_context.get_game_addr()),
-                e.to_string()
-            );
+            warn!("{} Handle event error: {}", env.log_prefix, e.to_string());
             log_execution_context(game_context, &event);
             match e {
                 Error::WasmExecutionError(_) | Error::WasmMemoryOverflow => {
@@ -118,7 +183,7 @@ async fn handle(
 /// Take the event from clients or the pending dispatched event.
 /// Transactor will retrieve events from both dispatching event and
 /// ports, while Validator will retrieve events from only ports.
-async fn retrieve_event(
+async fn read_event(
     ports: &mut PipelinePorts,
     game_context: &mut GameContext,
     mode: ClientMode,
@@ -131,7 +196,7 @@ async fn retrieve_event(
         if dispatch.timeout <= timestamp {
             let event = dispatch.event.clone();
             game_context.cancel_dispatch();
-            return Some(EventFrame::SendServerEvent { event });
+            return Some(EventFrame::SendServerEvent { event, timestamp });
         }
         let to = tokio::time::sleep(Duration::from_millis(dispatch.timeout - timestamp));
         select! {
@@ -141,7 +206,7 @@ async fn retrieve_event(
             _ = to => {
                 let event = dispatch.event.clone();
                 game_context.cancel_dispatch();
-                Some(EventFrame::SendServerEvent { event })
+                Some(EventFrame::SendServerEvent { event, timestamp })
             }
         }
     } else {
@@ -151,104 +216,232 @@ async fn retrieve_event(
 
 #[async_trait]
 impl Component<PipelinePorts, EventLoopContext> for EventLoop {
-    fn name(&self) -> &str {
+    fn name() -> &'static str {
         "Event Loop"
     }
 
-    async fn run(mut ports: PipelinePorts, ctx: EventLoopContext) -> CloseReason {
+    async fn run(
+        mut ports: PipelinePorts,
+        ctx: EventLoopContext,
+        env: ComponentEnv,
+    ) -> CloseReason {
         let mut handler = ctx.handler;
         let mut game_context = ctx.game_context;
 
         // Read games from event bus
-        while let Some(event_frame) = retrieve_event(&mut ports, &mut game_context, ctx.mode).await
+        while let Some(event_frame) =
+            read_event(&mut ports, &mut game_context, ctx.client_mode).await
         {
-            // Set timestamp to current time
-            // Reset some disposable states.
-            game_context.prepare_for_next_event(current_timestamp());
-
             match event_frame {
-                EventFrame::InitState { init_account } => {
-                    info!("Servers: {:?}", game_context.get_servers());
-                    if let Err(e) = game_context
-                        .apply_checkpoint(init_account.access_version, init_account.settle_version)
-                    {
-                        error!("Failed to apply checkpoint: {:?}", e);
+                EventFrame::InitState {
+                    init_account,
+                    access_version,
+                    settle_version,
+                } => {
+                    if let Err(e) = game_context.apply_checkpoint(access_version, settle_version) {
+                        error!("{} Failed to apply checkpoint: {:?}, context settle version: {}, init account settle version: {}", env.log_prefix, e,
+                            game_context.settle_version(), settle_version);
                         ports.send(EventFrame::Shutdown).await;
                         return CloseReason::Fault(e);
                     }
 
                     if let Err(e) = handler.init_state(&mut game_context, &init_account) {
-                        error!("Failed to initialize state: {:?}", e);
+                        error!("{} Failed to initialize state: {:?}", env.log_prefix, e);
                         ports.send(EventFrame::Shutdown).await;
                         return CloseReason::Fault(e);
                     }
 
-                    info!("Servers: {:?}", game_context.get_servers());
+                    let state_sha = digest(game_context.get_handler_state_raw());
                     info!(
-                        "{} Initialize game state, access_version = {}, settle_version = {}",
-                        addr_shorthand(&init_account.addr),
-                        init_account.access_version,
-                        init_account.settle_version
+                        "{} Initialize game state, access_version: {}, settle_version: {}, SHA: {}",
+                        env.log_prefix, access_version, settle_version, state_sha
                     );
 
                     game_context.dispatch_safe(Event::Ready, 0);
-                    ports
-                        .send(EventFrame::Checkpoint {
-                            access_version: init_account.access_version,
-                            settle_version: init_account.settle_version,
-                        })
-                        .await;
                 }
+
+                EventFrame::GameStart { .. } => {
+                    let timestamp = current_timestamp();
+                    if ctx.client_mode == ClientMode::Transactor {
+                        let event = Event::GameStart;
+                        if let Some(close_reason) = handle_event(
+                            &mut handler,
+                            &mut game_context,
+                            event,
+                            &ports,
+                            ctx.client_mode,
+                            ctx.game_mode,
+                            timestamp,
+                            &env,
+                        )
+                            .await
+                        {
+                            ports.send(EventFrame::Shutdown).await;
+                            return close_reason;
+                        }
+                    }
+                }
+
                 EventFrame::Sync {
                     new_players,
                     new_servers,
                     access_version,
                     transactor_addr,
                 } => {
-                    let event = Event::Sync {
-                        new_players,
-                        new_servers,
-                        access_version,
-                        transactor_addr,
-                    };
-                    if let Some(close_reason) =
-                        handle(&mut handler, &mut game_context, event, &ports, ctx.mode).await
+                    let timestamp = current_timestamp();
+
+                    info!(
+                        "{} handle Sync, access_version: {:?}",
+                        env.log_prefix, access_version
+                    );
+                    game_context.set_access_version(access_version);
+
+                    // Add servers to context
+                    for server in new_servers.iter() {
+                        let mode = if server.addr.eq(&transactor_addr) {
+                            ClientMode::Transactor
+                        } else {
+                            ClientMode::Validator
+                        };
+                        game_context.add_node(server.addr.clone(), server.access_version, mode);
+                        info!(
+                            "{} Game context add server: {:?}",
+                            env.log_prefix, server.addr
+                        );
+                    }
+
+                    let mut new_players_1: Vec<GamePlayer> = Vec::with_capacity(new_players.len());
+                    for p in new_players.iter() {
+                        new_players_1.push(p.clone().into());
+                        game_context.add_node(p.addr.clone(), p.access_version, ClientMode::Player);
+                    }
+
+                    // We only generate join event in Transactor & Main mode.
+                    if ctx.client_mode == ClientMode::Transactor
+                        && ctx.game_mode == GameMode::Main
+                        && !new_players.is_empty()
                     {
-                        ports.send(EventFrame::Shutdown).await;
-                        return close_reason;
+                        let event = Event::Join {
+                            players: new_players_1,
+                        };
+                        if let Some(close_reason) = handle_event(
+                            &mut handler,
+                            &mut game_context,
+                            event,
+                            &ports,
+                            ctx.client_mode,
+                            ctx.game_mode,
+                            timestamp,
+                            &env,
+                        )
+                            .await
+                        {
+                            ports.send(EventFrame::Shutdown).await;
+                            return close_reason;
+                        }
                     }
                 }
                 EventFrame::PlayerLeaving { player_addr } => {
-                    let event = Event::Leave { player_addr };
-                    if let Some(close_reason) =
-                        handle(&mut handler, &mut game_context, event, &ports, ctx.mode).await
+                    info!("Current allow_exit = {}", game_context.is_allow_exit());
+                    let timestamp = current_timestamp();
+                    if let Ok(player_id) = game_context.addr_to_id(&player_addr) {
+                        let event = Event::Leave { player_id };
+                        if let Some(close_reason) = handle_event(
+                            &mut handler,
+                            &mut game_context,
+                            event,
+                            &ports,
+                            ctx.client_mode,
+                            ctx.game_mode,
+                            timestamp,
+                            &env,
+                        )
+                            .await
+                        {
+                            ports.send(EventFrame::Shutdown).await;
+                            return close_reason;
+                        }
+                    } else {
+                        error!(
+                            "{} Ignore PlayerLeaving, due to can not map the address to id",
+                            env.log_prefix
+                        );
+                    }
+                }
+                EventFrame::RecvBridgeEvent {
+                    event,
+                    dest,
+                    from,
+                    checkpoint,
+                    settle_version,
+                    ..
+                } => {
+                    // In the case of parent, update the child game's
+                    // checkpoint value.
+
+                    let timestamp = current_timestamp();
+
+                    if game_context.game_id() == 0 && dest == 0 && from != 0 && settle_version > 0 {
+                        info!("Update checkpoint for child game: {}", from);
+                        game_context.checkpoint_mut().set_data(from, checkpoint)
+                    }
+
+                    if let Some(close_reason) = handle_event(
+                        &mut handler,
+                        &mut game_context,
+                        event,
+                        &ports,
+                        ctx.client_mode,
+                        ctx.game_mode,
+                        timestamp,
+                        &env,
+                    )
+                        .await
                     {
                         ports.send(EventFrame::Shutdown).await;
                         return close_reason;
                     }
                 }
-                EventFrame::SendEvent { event } => {
-                    if let Some(close_reason) =
-                        handle(&mut handler, &mut game_context, event, &ports, ctx.mode).await
+                EventFrame::SendEvent { event, timestamp } => {
+                    if let Some(close_reason) = handle_event(
+                        &mut handler,
+                        &mut game_context,
+                        event,
+                        &ports,
+                        ctx.client_mode,
+                        ctx.game_mode,
+                        timestamp,
+                        &env,
+                    )
+                        .await
                     {
                         ports.send(EventFrame::Shutdown).await;
                         return close_reason;
                     }
                 }
-                EventFrame::SendServerEvent { event } => {
+                EventFrame::SendServerEvent { event, timestamp } => {
                     // Handle the shutdown event from game logic
                     if matches!(event, Event::Shutdown) {
                         ports.send(EventFrame::Shutdown).await;
                         return CloseReason::Complete;
-                    } else if let Some(close_reason) =
-                        handle(&mut handler, &mut game_context, event, &ports, ctx.mode).await
+                    } else if let Some(close_reason) = handle_event(
+                        &mut handler,
+                        &mut game_context,
+                        event,
+                        &ports,
+                        ctx.client_mode,
+                        ctx.game_mode,
+                        timestamp,
+                        &env,
+                    )
+                        .await
                     {
                         ports.send(EventFrame::Shutdown).await;
                         return close_reason;
                     }
                 }
                 EventFrame::Shutdown => {
-                    warn!("Shutdown event loop");
+                    warn!("{} Shutdown event loop", env.log_prefix);
                     return CloseReason::Complete;
                 }
                 _ => (),
@@ -263,22 +456,17 @@ impl EventLoop {
     pub fn init(
         handler: WrappedHandler,
         game_context: GameContext,
-        mode: ClientMode,
+        client_mode: ClientMode,
+        game_mode: GameMode,
     ) -> (Self, EventLoopContext) {
         (
             Self {},
             EventLoopContext {
                 handler,
                 game_context,
-                mode,
+                client_mode,
+                game_mode,
             },
         )
     }
 }
-
-fn current_timestamp() -> u64 {
-    std::time::SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap()
-        .as_millis() as u64
-}
diff --git a/transactor/src/component/submitter.rs b/transactor/src/component/submitter.rs
index b8c35ff5..d5cc78c3 100644
--- a/transactor/src/component/submitter.rs
+++ b/transactor/src/component/submitter.rs
@@ -3,16 +3,22 @@ use std::time::Duration;
 
 use async_trait::async_trait;
 use race_api::error::Error;
-use race_core::types::{GameAccount, SettleParams};
+use race_core::storage::StorageT;
+use race_core::types::{GameAccount, SaveCheckpointParams, SettleParams, TxState};
 use tokio::select;
 use tokio::sync::mpsc;
-use tracing::error;
+use tracing::{error, info};
 
-use crate::component::common::{Component, ConsumerPorts};
+use crate::component::common::Component;
 use crate::component::event_bus::CloseReason;
 use crate::frame::EventFrame;
 use race_core::transport::TransportT;
 
+use super::ComponentEnv;
+use super::common::PipelinePorts;
+
+const MAX_PENDING_TXS: usize = 10;
+
 /// Squash two settles into one.
 fn squash_settles(mut prev: SettleParams, next: SettleParams) -> SettleParams {
     let SettleParams {
@@ -36,13 +42,13 @@ fn squash_settles(mut prev: SettleParams, next: SettleParams) -> SettleParams {
     }
 }
 
-/// Read at most 3 settle events from channel.
+/// Read at most `MAX_PENDING_TXS` settle events from channel.
 async fn read_settle_params(rx: &mut mpsc::Receiver<SettleParams>) -> Vec<SettleParams> {
     let mut v = vec![];
     let mut cnt = 0;
 
     loop {
-        if cnt == 3 {
+        if cnt == MAX_PENDING_TXS {
             break;
         }
 
@@ -71,6 +77,7 @@ async fn read_settle_params(rx: &mut mpsc::Receiver<SettleParams>) -> Vec<Settle
 pub struct SubmitterContext {
     addr: String,
     transport: Arc<dyn TransportT>,
+    storage: Arc<dyn StorageT>,
 }
 
 pub struct Submitter {}
@@ -79,35 +86,48 @@ impl Submitter {
     pub fn init(
         game_account: &GameAccount,
         transport: Arc<dyn TransportT>,
+        storage: Arc<dyn StorageT>,
     ) -> (Self, SubmitterContext) {
         (
             Self {},
             SubmitterContext {
                 addr: game_account.addr.clone(),
                 transport,
+                storage,
             },
         )
     }
 }
 
 #[async_trait]
-impl Component<ConsumerPorts, SubmitterContext> for Submitter {
-    fn name(&self) -> &str {
+impl Component<PipelinePorts, SubmitterContext> for Submitter {
+    fn name() -> &'static str {
         "Submitter"
     }
 
-    async fn run(mut ports: ConsumerPorts, ctx: SubmitterContext) -> CloseReason {
+    async fn run(mut ports: PipelinePorts, ctx: SubmitterContext, env: ComponentEnv) -> CloseReason {
         let (queue_tx, mut queue_rx) = mpsc::channel::<SettleParams>(32);
-
+        let p = ports.clone_as_producer();
         // Start a task to handle settlements
         // Prevent the blocking from pending transactions
         let join_handle = tokio::spawn(async move {
             loop {
                 let ps = read_settle_params(&mut queue_rx).await;
                 if let Some(params) = ps.into_iter().reduce(squash_settles) {
+                    let settle_version = params.settle_version;
                     let res = ctx.transport.settle_game(params).await;
                     match res {
-                        Ok(_) => (),
+                        Ok(signature) => {
+                            let tx_state = TxState::SettleSucceed {
+                                signature: if signature.is_empty() {
+                                    None
+                                } else {
+                                    Some(signature)
+                                },
+                                settle_version,
+                            };
+                            p.send(EventFrame::TxState { tx_state }).await;
+                        }
                         Err(e) => {
                             return CloseReason::Fault(e);
                         }
@@ -121,22 +141,48 @@ impl Component<ConsumerPorts, SubmitterContext> for Submitter {
 
         while let Some(event) = ports.recv().await {
             match event {
-                EventFrame::Settle {
+                EventFrame::Checkpoint {
                     settles,
                     transfers,
                     checkpoint,
                     settle_version,
+                    previous_settle_version,
+                    ..
                 } => {
-                    let res = queue_tx.send(SettleParams {
-                        addr: ctx.addr.clone(),
-                        settles,
-                        transfers,
-                        checkpoint,
+                    let checkpoint_onchain = checkpoint.derive_onchain_part();
+                    let checkpoint_offchain = checkpoint.derive_offchain_part();
+
+                    info!("{} Submitter save checkpoint to storage, settle_version = {}",
+                        env.log_prefix, settle_version
+                    );
+                    let save_checkpoint_result = ctx.storage.save_checkpoint(SaveCheckpointParams {
+                        game_addr: ctx.addr.clone(),
                         settle_version,
-                        next_settle_version: settle_version + 1,
+                        checkpoint: checkpoint_offchain,
                     }).await;
+
+                    if let Err(e) = save_checkpoint_result {
+                        error!("{} Submitter failed to save checkpoint offchain: {}",
+                            env.log_prefix, e.to_string());
+                        break;
+                    }
+
+                    let res = queue_tx
+                        .send(SettleParams {
+                            addr: ctx.addr.clone(),
+                            settles,
+                            transfers,
+                            checkpoint: checkpoint_onchain,
+                            settle_version: previous_settle_version,
+                            next_settle_version: settle_version,
+                        })
+                        .await;
                     if let Err(e) = res {
-                        error!("Submitter failed to send settle to task queue: {}", e.to_string());
+                        error!(
+                            "{} Submitter failed to send settle to task queue: {}",
+                            env.log_prefix,
+                            e.to_string()
+                        );
                     }
                 }
                 EventFrame::Shutdown => {
@@ -160,42 +206,47 @@ impl Component<ConsumerPorts, SubmitterContext> for Submitter {
 mod tests {
 
     use super::*;
-    use race_core::types::Settle;
+    use race_core::{checkpoint::Checkpoint, types::SettleWithAddr};
+    use race_local_db::LocalDbStorage;
     use race_test::prelude::*;
 
     #[tokio::test]
     async fn test_submit_settle() {
-        let alice = TestClient::player("alice");
-        let bob = TestClient::player("bob");
-        let charlie = TestClient::player("charlie");
+        let mut alice = TestClient::player("alice");
+        let mut bob = TestClient::player("bob");
+        let mut charlie = TestClient::player("charlie");
         let game_account = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .add_player(&bob, 100)
-            .add_player(&charlie, 100)
+            .add_player(&mut alice, 100)
+            .add_player(&mut bob, 100)
+            .add_player(&mut charlie, 100)
             .build();
         let transport = Arc::new(DummyTransport::default());
-        let (submitter, ctx) = Submitter::init(&game_account, transport.clone());
+        let storage = Arc::new(LocalDbStorage::try_new_mem().unwrap());
+        let (submitter, ctx) = Submitter::init(&game_account, transport.clone(), storage.clone());
 
         let settles = vec![
-            Settle::sub("alice", 50),
-            Settle::add("alice", 20),
-            Settle::add("alice", 20),
-            Settle::sub("alice", 40),
-            Settle::add("bob", 50),
-            Settle::sub("bob", 20),
-            Settle::sub("bob", 20),
-            Settle::sub("bob", 20),
-            Settle::add("bob", 30),
-            Settle::eject("charlie"),
+            SettleWithAddr::sub("alice", 50),
+            SettleWithAddr::add("alice", 20),
+            SettleWithAddr::add("alice", 20),
+            SettleWithAddr::sub("alice", 40),
+            SettleWithAddr::add("bob", 50),
+            SettleWithAddr::sub("bob", 20),
+            SettleWithAddr::sub("bob", 20),
+            SettleWithAddr::sub("bob", 20),
+            SettleWithAddr::add("bob", 30),
+            SettleWithAddr::eject("charlie"),
         ];
 
-        let event_frame = EventFrame::Settle {
+        let event_frame = EventFrame::Checkpoint {
             settles: settles.clone(),
             transfers: vec![],
-            checkpoint: vec![],
-            settle_version: 0,
+            checkpoint: Checkpoint::default(),
+            settle_version: 1,
+            previous_settle_version: 0,
+            access_version: 1,
+            state_sha: "".into(),
         };
-        let handle = submitter.start(ctx);
+        let handle = submitter.start("TEST", ctx);
 
         handle.send_unchecked(event_frame).await;
         handle.send_unchecked(EventFrame::Shutdown).await;
diff --git a/transactor/src/component/subscriber.rs b/transactor/src/component/subscriber.rs
index 96fefd28..bce734ba 100644
--- a/transactor/src/component/subscriber.rs
+++ b/transactor/src/component/subscriber.rs
@@ -6,6 +6,7 @@ use async_trait::async_trait;
 use futures::pin_mut;
 use futures::StreamExt;
 use race_core::types::BroadcastFrame;
+use race_core::types::BroadcastSync;
 use race_core::types::VoteType;
 use race_core::types::{GameAccount, ServerAccount};
 use tracing::error;
@@ -15,6 +16,7 @@ use tracing::warn;
 use crate::frame::EventFrame;
 
 use super::common::{Component, ProducerPorts};
+use super::ComponentEnv;
 use super::{event_bus::CloseReason, RemoteConnection};
 
 pub struct SubscriberContext {
@@ -52,11 +54,11 @@ impl Subscriber {
 
 #[async_trait]
 impl Component<ProducerPorts, SubscriberContext> for Subscriber {
-    fn name(&self) -> &str {
+    fn name() -> &'static str {
         "Subscriber"
     }
 
-    async fn run(ports: ProducerPorts, ctx: SubscriberContext) -> CloseReason {
+    async fn run(ports: ProducerPorts, ctx: SubscriberContext, env: ComponentEnv) -> CloseReason {
         let SubscriberContext {
             game_addr,
             server_addr: _,
@@ -76,8 +78,8 @@ impl Component<ProducerPorts, SubscriberContext> for Subscriber {
                 Err(e) => {
                     if retries == 3 {
                         error!(
-                            "Failed to subscribe events: {}. Vote on the transactor {} has dropped",
-                            e, transactor_addr
+                            "{} Failed to subscribe events: {}. Vote on the transactor {} has dropped",
+                            env.log_prefix, e, transactor_addr
                         );
 
                         ports
@@ -87,10 +89,13 @@ impl Component<ProducerPorts, SubscriberContext> for Subscriber {
                             })
                             .await;
 
-                        warn!("Shutdown subscriber");
+                        warn!("{} Shutdown subscriber", env.log_prefix);
                         return CloseReason::Complete;
                     } else {
-                        error!("Failed to subscribe events: {}, will retry", e);
+                        error!(
+                            "{} Failed to subscribe events: {}, will retry",
+                            env.log_prefix, e
+                        );
                         retries += 1;
                         continue;
                     }
@@ -98,29 +103,69 @@ impl Component<ProducerPorts, SubscriberContext> for Subscriber {
             }
         };
 
-        info!("Subscription established");
+        info!("{} Subscription established", env.log_prefix);
         pin_mut!(sub);
 
         while let Some(frame) = sub.next().await {
             match frame {
                 // Forward event to event bus
-                BroadcastFrame::Event { event, .. } => {
-                    if let Err(e) = ports.try_send(EventFrame::SendServerEvent { event }).await {
+                BroadcastFrame::Event { event, timestamp, .. } => {
+                    info!("{} Receive event: {}", env.log_prefix, event);
+                    if let Err(e) = ports.try_send(EventFrame::SendServerEvent { event, timestamp }).await {
                         error!("Send server event error: {}", e);
                         break;
                     }
                 }
 
+                BroadcastFrame::Sync { sync } => {
+                    let BroadcastSync {
+                        new_players,
+                        new_servers,
+                        access_version,
+                        transactor_addr,
+                    } = sync;
+                    info!(
+                        "{} Receive Sync broadcast, new_players: {:?}, new_servers: {:?}",
+                        env.log_prefix, new_players, new_servers
+                    );
+                    if let Err(e) = ports
+                        .try_send(EventFrame::Sync {
+                            new_players,
+                            new_servers,
+                            transactor_addr,
+                            access_version,
+                        })
+                        .await
+                    {
+                        error!("{} Send update node error: {}", env.log_prefix, e);
+                        break;
+                    }
+                }
+
                 BroadcastFrame::Message { .. } => {
                     // Dropped
                 }
                 BroadcastFrame::TxState { .. } => {
                     // Dropped
                 }
+                BroadcastFrame::EventHistories { histories, .. } => {
+                    info!(
+                        "{} Receive event histories: {}",
+                        env.log_prefix,
+                        histories.len()
+                    );
+                    for hist in histories {
+                        if let Err(e) = ports.try_send(EventFrame::SendServerEvent { event: hist.event.clone(), timestamp: hist.timestamp }).await
+                        {
+                            error!("Send server event error: {}", e);
+                            break;
+                        }
+                    }
+                }
             }
         }
 
-        warn!("Vote for disconnecting");
+        warn!("{} Vote for disconnecting", env.log_prefix);
         ports
             .send(EventFrame::Vote {
                 votee: transactor_addr,
diff --git a/transactor/src/component/synchronizer.rs b/transactor/src/component/synchronizer.rs
index 061d2d4a..f2d76b07 100644
--- a/transactor/src/component/synchronizer.rs
+++ b/transactor/src/component/synchronizer.rs
@@ -1,12 +1,19 @@
-use std::{sync::Arc, time::Duration};
+//! Synchronize the updates from game account. Currently we use pulls
+//! instead of websocket. Firstly we query the state with confirming
+//! status, if a new state is found, we swtich to query with finalized
+//! status. For confirming query we have 5 seconds as interval, for
+//! finalized query, we use 2 seconds as interval.
+
+use std::sync::Arc;
 
 use async_trait::async_trait;
-use tokio::time::sleep;
+use race_api::error::Error;
+use tokio_stream::StreamExt;
 
-use crate::{frame::EventFrame, utils::addr_shorthand};
+use crate::frame::EventFrame;
 use race_core::{
     transport::TransportT,
-    types::{GameAccount, PlayerJoin, QueryMode, ServerJoin, TxState},
+    types::{GameAccount, PlayerJoin, QueryMode, ServerJoin},
 };
 use tracing::{info, warn};
 
@@ -15,14 +22,17 @@ use crate::component::{
     event_bus::CloseReason,
 };
 
+use super::ComponentEnv;
+
 pub struct GameSynchronizerContext {
     transport: Arc<dyn TransportT>,
     access_version: u64,
     game_addr: String,
+    #[allow(unused)]
     mode: QueryMode,
 }
 
-const MAX_RETRIES: u8 = 10;
+// const MAX_RETRIES: u8 = 10;
 
 /// A component that reads the on-chain states and feeds the system.
 /// To construct a synchronizer, a chain adapter is required.
@@ -48,139 +58,212 @@ impl GameSynchronizer {
 #[allow(unused_assignments)]
 #[async_trait]
 impl Component<ProducerPorts, GameSynchronizerContext> for GameSynchronizer {
-    fn name(&self) -> &str {
-        "Game synchronizer"
+    fn name() -> &'static str {
+        "Game Synchronizer"
     }
 
-    async fn run(ports: ProducerPorts, ctx: GameSynchronizerContext) -> CloseReason {
+    async fn run(
+        ports: ProducerPorts,
+        ctx: GameSynchronizerContext,
+        env: ComponentEnv,
+    ) -> CloseReason {
         let mut prev_access_version = ctx.access_version;
-        let mut access_version = ctx.access_version;
-        let mut mode = ctx.mode;
-        let mut num_of_retries = 0;
-
-        loop {
-            let state = ctx
-                .transport
-                .get_game_account(&ctx.game_addr, mode)
-                .await;
-
-            if ports.is_tx_closed() {
-                return CloseReason::Complete;
+
+        let mut sub = match ctx.transport.subscribe_game_account(&ctx.game_addr).await {
+            Ok(sub) => sub,
+            Err(e) => {
+                warn!(
+                    "{} Synchronizer failed to subscribe game account updates: {}",
+                    env.log_prefix,
+                    e.to_string()
+                );
+                return CloseReason::Fault(Error::GameAccountNotFound);
+            }
+        };
+
+        while let Some(Some(game_account)) = sub.next().await {
+            let GameAccount {
+                players,
+                servers,
+                access_version,
+                transactor_addr,
+                ..
+            } = game_account;
+
+            // Drop duplicated updates
+            if access_version <= prev_access_version {
+                continue;
             }
 
-            match mode {
-                QueryMode::Confirming => {
-                    if let Ok(Some(state)) = state {
-                        if access_version < state.access_version {
-                            info!(
-                                "{} Synchronizer found confirming state, access_version = {}, settle_version = {}",
-                                addr_shorthand(&ctx.game_addr),
-                                state.access_version,
-                                state.settle_version,
-                            );
-                            let GameAccount {
-                                access_version: av,
-                                players,
-                                deposits: _,
-                                ..
-                            } = state;
-
-                            let confirm_players: Vec<PlayerJoin> = players
-                                .into_iter()
-                                .filter(|p| p.access_version > access_version)
-                                .collect();
-
-                            if !confirm_players.is_empty() {
-                                let tx_state = TxState::PlayerConfirming {
-                                    confirm_players,
-                                    access_version: state.access_version,
-                                };
-                                let frame = EventFrame::TxState { tx_state };
-
-                                // When other channels are closed
-                                if ports.try_send(frame).await.is_err() {
-                                    return CloseReason::Complete;
-                                }
-                            }
-                            prev_access_version = access_version;
-                            access_version = av;
-                            mode = QueryMode::Finalized;
-                        } else {
-                            sleep(Duration::from_secs(1)).await;
-                        }
-                    }
-                }
+            info!(
+                "{} Synchronizer found new game state, access_version = {}, settle_version = {}",
+                env.log_prefix, game_account.access_version, game_account.settle_version,
+            );
 
-                QueryMode::Finalized => {
-                    if let Ok(Some(state)) = state {
-                        let GameAccount {
-                            access_version: av,
-                            players,
-                            deposits: _,
-                            servers,
-                            transactor_addr,
-                            ..
-                        } = state;
-
-                        if access_version <= state.access_version {
-                            info!(
-                                "{} Synchronizer found a finalized state, access_version = {}, settle_version = {}",
-                                addr_shorthand(&ctx.game_addr),
-                                state.access_version,
-                                state.settle_version,
-                            );
-                            let new_players: Vec<PlayerJoin> = players
-                                .into_iter()
-                                .filter(|p| p.access_version > prev_access_version)
-                                .collect();
-
-                            let new_servers: Vec<ServerJoin> = servers
-                                .into_iter()
-                                .filter(|s| s.access_version > prev_access_version)
-                                .collect();
-
-                            if !new_players.is_empty() || !new_servers.is_empty() {
-                                let frame = EventFrame::Sync {
-                                    new_players,
-                                    new_servers,
-                                    // TODO: Handle transactor addr change
-                                    transactor_addr: transactor_addr.unwrap().clone(),
-                                    access_version: state.access_version,
-                                };
-
-                                // When other channels are closed
-                                if ports.try_send(frame).await.is_err() {
-                                    return CloseReason::Complete;
-                                }
-                            }
-                            num_of_retries = 0;
-                            access_version = av;
-                            mode = QueryMode::Confirming;
-                        } else if num_of_retries < MAX_RETRIES {
-                            num_of_retries += 1;
-                            sleep(Duration::from_secs(1)).await;
-                        } else {
-                            // Signal absence of a new game state
-                            let tx_state = TxState::PlayerConfirmingFailed(access_version);
-
-                            let frame = EventFrame::TxState { tx_state };
-
-                            // When other channels are closed
-                            if ports.try_send(frame).await.is_err() {
-                                return CloseReason::Complete;
-                            }
-                            mode = QueryMode::Confirming;
-                            num_of_retries = 0;
-                            access_version = prev_access_version;
-                        }
-                    } else {
-                        warn!("Game account not found, shutdown synchronizer");
-                        return CloseReason::Complete;
-                    }
+            let new_players: Vec<PlayerJoin> = players
+                .into_iter()
+                .filter(|p| p.access_version > prev_access_version)
+                .collect();
+
+            let new_servers: Vec<ServerJoin> = servers
+                .into_iter()
+                .filter(|s| s.access_version > prev_access_version)
+                .collect();
+
+            if !new_players.is_empty() || !new_servers.is_empty() {
+                let frame = EventFrame::Sync {
+                    new_players,
+                    new_servers,
+                    // TODO: Handle transactor addr change
+                    transactor_addr: transactor_addr.unwrap().clone(),
+                    access_version,
+                };
+
+                // When other channels are closed
+                if ports.try_send(frame).await.is_err() {
+                    return CloseReason::Complete;
                 }
             }
+
+            prev_access_version = access_version;
         }
+
+        return CloseReason::Complete;
     }
+
+    // async fn run(
+    //     ports: ProducerPorts,
+    //     ctx: GameSynchronizerContext,
+    //     env: ComponentEnv,
+    // ) -> CloseReason {
+    //     let mut prev_access_version = ctx.access_version;
+    //     let mut access_version = ctx.access_version;
+    //     let mut mode = ctx.mode;
+    //     let mut num_of_retries = 0;
+
+    //     loop {
+    //         let state = ctx.transport.get_game_account(&ctx.game_addr, mode).await;
+
+    //         if ports.is_tx_closed() {
+    //             return CloseReason::Complete;
+    //         }
+
+    //         match mode {
+    //             QueryMode::Confirming => {
+    //                 if let Ok(Some(state)) = state {
+    //                     if access_version < state.access_version {
+    //                         info!(
+    //                             "{} Synchronizer found confirming state, access_version = {}, settle_version = {}",
+    //                             env.log_prefix,
+    //                             state.access_version,
+    //                             state.settle_version,
+    //                         );
+    //                         let GameAccount {
+    //                             access_version: av,
+    //                             players,
+    //                             deposits: _,
+    //                             ..
+    //                         } = state;
+
+    //                         let confirm_players: Vec<ConfirmingPlayer> = players
+    //                             .into_iter()
+    //                             .filter(|p| p.access_version > access_version)
+    //                             .map(Into::into)
+    //                             .collect();
+
+    //                         if !confirm_players.is_empty() {
+    //                             let tx_state = TxState::PlayerConfirming {
+    //                                 confirm_players,
+    //                                 access_version: state.access_version,
+    //                             };
+    //                             let frame = EventFrame::TxState { tx_state };
+
+    //                             // When other channels are closed
+    //                             if ports.try_send(frame).await.is_err() {
+    //                                 return CloseReason::Complete;
+    //                             }
+    //                         }
+    //                         prev_access_version = access_version;
+    //                         access_version = av;
+    //                         mode = QueryMode::Finalized;
+    //                     } else {
+    //                         sleep(Duration::from_secs(5)).await;
+    //                     }
+    //                 }
+    //             }
+
+    //             QueryMode::Finalized => {
+    //                 if let Ok(Some(state)) = state {
+    //                     let GameAccount {
+    //                         access_version: av,
+    //                         players,
+    //                         deposits: _,
+    //                         servers,
+    //                         transactor_addr,
+    //                         ..
+    //                     } = state;
+
+    //                     if access_version <= state.access_version {
+    //                         info!(
+    //                             "{} Synchronizer found a finalized state, access_version = {}, settle_version = {}",
+    //                             env.log_prefix,
+    //                             state.access_version,
+    //                             state.settle_version,
+    //                         );
+    //                         let new_players: Vec<PlayerJoin> = players
+    //                             .into_iter()
+    //                             .filter(|p| p.access_version > prev_access_version)
+    //                             .collect();
+
+    //                         let new_servers: Vec<ServerJoin> = servers
+    //                             .into_iter()
+    //                             .filter(|s| s.access_version > prev_access_version)
+    //                             .collect();
+
+    //                         if !new_players.is_empty() || !new_servers.is_empty() {
+    //                             let frame = EventFrame::Sync {
+    //                                 new_players,
+    //                                 new_servers,
+    //                                 // TODO: Handle transactor addr change
+    //                                 transactor_addr: transactor_addr.unwrap().clone(),
+    //                                 access_version: state.access_version,
+    //                             };
+
+    //                             // When other channels are closed
+    //                             if ports.try_send(frame).await.is_err() {
+    //                                 return CloseReason::Complete;
+    //                             }
+    //                         }
+    //                         num_of_retries = 0;
+    //                         access_version = av;
+    //                         mode = QueryMode::Confirming;
+    //                         sleep(Duration::from_secs(5)).await;
+    //                     } else if num_of_retries < MAX_RETRIES {
+    //                         num_of_retries += 1;
+    //                         sleep(Duration::from_secs(2)).await;
+    //                     } else {
+    //                         // Signal absence of a new game state
+    //                         let tx_state = TxState::PlayerConfirmingFailed(access_version);
+
+    //                         let frame = EventFrame::TxState { tx_state };
+
+    //                         // When other channels are closed
+    //                         if ports.try_send(frame).await.is_err() {
+    //                             return CloseReason::Complete;
+    //                         }
+    //                         mode = QueryMode::Confirming;
+    //                         num_of_retries = 0;
+    //                         access_version = prev_access_version;
+    //                         sleep(Duration::from_secs(5)).await;
+    //                     }
+    //                 } else {
+    //                     warn!("Game account not found, shutdown synchronizer");
+    //                     return CloseReason::Complete;
+    //                 }
+    //             }
+    //         }
+    //     }
+    // }
 }
 
 #[cfg(test)]
@@ -191,19 +274,19 @@ mod tests {
     #[tokio::test]
     async fn test_sync_state() {
         let transport = Arc::new(DummyTransport::default());
-        let alice = TestClient::player("alice");
-        let bob = TestClient::player("bob");
-        let foo = TestClient::transactor("foo");
-        let bar = TestClient::validator("bar");
+        let mut alice = TestClient::player("alice");
+        let mut bob = TestClient::player("bob");
+        let mut foo = TestClient::transactor("foo");
+        let mut bar = TestClient::validator("bar");
         let ga_0 = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .set_transactor(&foo)
+            .add_player(&mut alice, 100)
+            .set_transactor(&mut foo)
             .build();
         let ga_1 = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .set_transactor(&foo)
-            .add_player(&bob, 100)
-            .add_validator(&bar)
+            .add_player(&mut alice, 100)
+            .set_transactor(&mut foo)
+            .add_player(&mut bob, 100)
+            .add_validator(&mut bar)
             .build();
 
         println!("ga_0: {:?}", ga_0);
@@ -212,26 +295,30 @@ mod tests {
         // Use vec to simulate game accounts
         transport.simulate_states(vec![ga_1.clone(), ga_0.clone(), ga_1.clone()]);
         let (synchronizer, ctx) = GameSynchronizer::init(transport.clone(), &ga_0);
-        let mut handle = synchronizer.start(ctx);
+        let mut handle = synchronizer.start("synchronizer", ctx);
         let frame = handle.recv_unchecked().await.unwrap();
 
-        let test_confirm_players = vec![PlayerJoin {
+        let expected_new_players = vec![PlayerJoin {
             addr: "bob".into(),
             position: 1,
             balance: 100,
             access_version: 3,
             verify_key: "".into(),
         }];
-
-        let test_tx_state = TxState::PlayerConfirming {
-            confirm_players: test_confirm_players,
+        let expected_new_servers = vec![ServerJoin {
+            addr: "bar".into(),
+            endpoint: "".into(),
             access_version: 4,
-        };
+            verify_key: "".into(),
+        }];
+        let expected_transactor_addr = "foo".to_string();
+        let expected_access_version = 4;
 
-        if let EventFrame::TxState { tx_state } = frame {
-            assert_eq!(tx_state, test_tx_state);
-        } else {
-            panic!("Invalid event frame");
+        if let EventFrame::Sync { new_players, new_servers, transactor_addr, access_version } = frame {
+            assert_eq!(new_players, expected_new_players);
+            assert_eq!(new_servers, expected_new_servers);
+            assert_eq!(access_version, expected_access_version);
+            assert_eq!(transactor_addr, expected_transactor_addr);
         }
     }
 }
diff --git a/transactor/src/component/voter.rs b/transactor/src/component/voter.rs
index b5889d10..75b36078 100644
--- a/transactor/src/component/voter.rs
+++ b/transactor/src/component/voter.rs
@@ -12,7 +12,7 @@ use race_core::{
 };
 use tracing::{info, warn};
 
-use super::common::{Component, PipelinePorts};
+use super::{common::{Component, PipelinePorts}, ComponentEnv};
 use crate::frame::EventFrame;
 
 use super::event_bus::CloseReason;
@@ -44,11 +44,11 @@ impl Voter {
 
 #[async_trait]
 impl Component<PipelinePorts, VoterContext> for Voter {
-    fn name(&self) -> &str {
+    fn name() -> &'static str {
         "Voter"
     }
 
-    async fn run(mut ports: PipelinePorts, ctx: VoterContext) -> CloseReason {
+    async fn run(mut ports: PipelinePorts, ctx: VoterContext, env: ComponentEnv) -> CloseReason {
         while let Some(frame) = ports.recv().await {
             match frame {
                 EventFrame::Vote { votee, vote_type } => {
@@ -64,19 +64,19 @@ impl Component<PipelinePorts, VoterContext> for Voter {
                         let r = ctx.transport.vote(params.clone()).await;
                         match r {
                             Ok(_) | Err(Error::DuplicatedVote) => {
-                                info!("Vote sent");
+                                info!("{} Vote sent", env.log_prefix);
                                 ports.send(EventFrame::Shutdown).await;
                                 break;
                             }
                             Err(e) => {
-                                warn!("An error occurred in vote: {:?}, will retry.", e);
+                                warn!("{} An error occurred in vote: {:?}, will retry.", env.log_prefix, e);
                                 tokio::time::sleep(Duration::from_secs(3)).await;
                             }
                         }
                     }
                 }
                 EventFrame::Shutdown => {
-                    warn!("Shutdown voter");
+                    warn!("{} Shutdown voter", env.log_prefix);
                     break;
                 }
                 _ => (),
diff --git a/transactor/src/component/wrapped_client.rs b/transactor/src/component/wrapped_client.rs
index ab7ebc71..a72c5021 100644
--- a/transactor/src/component/wrapped_client.rs
+++ b/transactor/src/component/wrapped_client.rs
@@ -15,9 +15,10 @@ use race_client::Client;
 use race_core::connection::ConnectionT;
 use race_core::encryptor::EncryptorT;
 use race_core::transport::TransportT;
-use race_core::types::{ClientMode, GameAccount, ServerAccount};
-use tracing::warn;
+use race_core::types::ClientMode;
+use tracing::{error, warn};
 
+use super::ComponentEnv;
 use super::event_bus::CloseReason;
 
 pub struct WrappedClient {}
@@ -33,24 +34,13 @@ pub struct ClientContext {
 
 impl WrappedClient {
     pub fn init(
-        server_account: &ServerAccount,
-        init_account: &GameAccount,
+        addr: String,
+        game_addr: String,
+        mode: ClientMode,
         transport: Arc<dyn TransportT>,
         encryptor: Arc<dyn EncryptorT>,
         connection: Arc<dyn ConnectionT>,
     ) -> (Self, ClientContext) {
-        // Detect our client mode by check if our address is the transactor address
-        let server_addr = server_account.addr.clone();
-        let mode = if server_addr.eq(init_account
-            .transactor_addr
-            .as_ref()
-            .expect("Game is not served"))
-        {
-            ClientMode::Transactor
-        } else {
-            ClientMode::Validator
-        };
-
         (
             Self {},
             ClientContext {
@@ -58,8 +48,8 @@ impl WrappedClient {
                 encryptor,
                 connection,
                 mode,
-                addr: server_addr,
-                game_addr: init_account.addr.to_owned(),
+                addr,
+                game_addr,
             },
         )
     }
@@ -67,11 +57,11 @@ impl WrappedClient {
 
 #[async_trait]
 impl Component<ConsumerPorts, ClientContext> for WrappedClient {
-    fn name(&self) -> &str {
+    fn name() -> &'static str {
         "Client"
     }
 
-    async fn run(mut ports: ConsumerPorts, ctx: ClientContext) -> CloseReason {
+    async fn run(mut ports: ConsumerPorts, ctx: ClientContext, env: ComponentEnv) -> CloseReason {
         let ClientContext {
             addr,
             game_addr,
@@ -84,7 +74,7 @@ impl Component<ConsumerPorts, ClientContext> for WrappedClient {
         let mut client = Client::new(addr, game_addr, mode, transport, encryptor, connection);
 
         if let Err(e) = client.attach_game().await {
-            warn!("Failed to attach to game due to error: {:?}", e);
+            warn!("{} Failed to attach to game due to error: {:?}", env.log_prefix, e);
         }
 
         let mut res = Ok(());
@@ -99,16 +89,20 @@ impl Component<ConsumerPorts, ClientContext> for WrappedClient {
                                     break 'outer;
                                 }
                             }
-                            if context.is_checkpoint() {
-                                client.flush_secret_states();
-                            }
+                            // if context.is_checkpoint() {
+                            //     client.flush_secret_states();
+                            // }
                         }
                         Err(e) => {
+                            error!("{} Client error: {:?}", env.log_prefix, e);
                             res = Err(e);
                             break 'outer;
                         }
                     }
                 }
+                EventFrame::Checkpoint { .. } => {
+                    client.flush_secret_states();
+                }
                 EventFrame::Shutdown => break,
                 _ => (),
             }
@@ -125,6 +119,7 @@ impl Component<ConsumerPorts, ClientContext> for WrappedClient {
 mod tests {
 
     use race_api::prelude::*;
+    use race_core::types::ServerAccount;
     use race_encryptor::Encryptor;
     use race_test::prelude::*;
 
@@ -137,38 +132,40 @@ mod tests {
         GameContext,
         PortsHandle,
         Arc<DummyConnection>,
+        TestClient,
     ) {
-        let alice = TestClient::player("alice");
-        let bob = TestClient::player("bob");
-        let transactor = TestClient::transactor("transactor");
+        let mut alice = TestClient::player("alice");
+        let mut bob = TestClient::player("bob");
+        let mut transactor = TestClient::transactor("transactor");
         let game_account = TestGameAccountBuilder::default()
-            .add_player(&alice, 100)
-            .add_player(&bob, 100)
-            .set_transactor(&transactor)
+            .add_player(&mut alice, 100)
+            .add_player(&mut bob, 100)
+            .set_transactor(&mut transactor)
             .build();
         let encryptor = Arc::new(Encryptor::default());
         let transactor_account = ServerAccount {
-            addr: transactor.get_addr(),
+            addr: transactor.addr(),
             endpoint: "".into(),
         };
         let connection = Arc::new(DummyConnection::default());
         let transport = Arc::new(DummyTransport::default());
         let (client, client_ctx) = WrappedClient::init(
-            &transactor_account,
-            &game_account,
+            transactor_account.addr.clone(),
+            game_account.addr.clone(),
+            ClientMode::Transactor,
             transport,
             encryptor,
             connection.clone(),
         );
-        let handle = client.start(client_ctx);
-        let mut context = GameContext::try_new(&game_account).unwrap();
+        let handle = client.start(&game_account.addr, client_ctx);
+        let mut context = GameContext::try_new(&game_account, None).unwrap();
         context.set_node_ready(game_account.access_version);
-        (client, context, handle, connection)
+        (client, context, handle, connection, transactor)
     }
 
     #[tokio::test(flavor = "multi_thread")]
     async fn test_lock() {
-        let (mut _client, mut ctx, handle, connection) = setup();
+        let (mut _client, mut ctx, handle, connection, tx) = setup();
 
         // Mask the random_state
         let random = RandomSpec::shuffled_list(vec!["a".into(), "b".into(), "c".into()]);
@@ -178,7 +175,9 @@ mod tests {
             .mask("transactor".to_string(), vec![vec![0], vec![0], vec![0]])
             .unwrap();
 
-        let event_frame = EventFrame::ContextUpdated { context: Box::new(ctx) };
+        let event_frame = EventFrame::ContextUpdated {
+            context: Box::new(ctx),
+        };
         handle.send_unchecked(event_frame).await;
 
         println!("before read event");
@@ -190,7 +189,7 @@ mod tests {
                 ciphertexts_and_digests,
             } => {
                 assert_eq!(rid, random_id);
-                assert_eq!(sender, "transactor".to_string());
+                assert_eq!(sender, tx.id());
                 assert_eq!(3, ciphertexts_and_digests.len());
             }
             _ => panic!("Invalid event type"),
@@ -199,14 +198,16 @@ mod tests {
 
     #[tokio::test(flavor = "multi_thread")]
     async fn test_mask() {
-        let (mut _client, mut ctx, handle, connection) = setup();
+        let (mut _client, mut ctx, handle, connection, tx) = setup();
 
         let random = RandomSpec::shuffled_list(vec!["a".into(), "b".into(), "c".into()]);
         println!("context: {:?}", ctx);
         let rid = ctx.init_random_state(random).unwrap();
         println!("random inited");
 
-        let event_frame = EventFrame::ContextUpdated { context: Box::new(ctx) };
+        let event_frame = EventFrame::ContextUpdated {
+            context: Box::new(ctx),
+        };
         handle.send_unchecked(event_frame).await;
 
         println!("before read event");
@@ -219,7 +220,7 @@ mod tests {
                 ciphertexts,
             } => {
                 assert_eq!(rid, random_id);
-                assert_eq!(sender, "transactor".to_string());
+                assert_eq!(sender, tx.id());
                 assert_eq!(3, ciphertexts.len());
             }
             _ => panic!("Invalid event type"),
diff --git a/transactor/src/component/wrapped_handler.rs b/transactor/src/component/wrapped_handler.rs
index 6c95f7df..6c25cf08 100644
--- a/transactor/src/component/wrapped_handler.rs
+++ b/transactor/src/component/wrapped_handler.rs
@@ -2,17 +2,18 @@ use std::mem::swap;
 use std::path::PathBuf;
 use std::sync::Arc;
 
-use borsh::{BorshDeserialize, BorshSerialize};
+use borsh::BorshDeserialize;
 use race_api::effect::Effect;
-use race_api::engine::InitAccount;
 use race_api::error::{Error, Result};
 use race_api::event::Event;
-use race_core::context::GameContext;
+use race_api::init_account::InitAccount;
+use race_core::context::{EventEffects, GameContext};
 use race_core::encryptor::EncryptorT;
-use race_core::engine::{general_handle_event, general_init_state, post_handle_event};
-use race_core::types::{GameBundle, Settle, Transfer};
+use race_core::engine::general_handle_event;
+use race_core::types::GameBundle;
 use race_encryptor::Encryptor;
 use tracing::info;
+use tracing::log::error;
 use wasmer::{imports, Instance, Module, Store, TypedFunction};
 
 fn log_execution_context(effect_bs: &Vec<u8>, event_bs: &Vec<u8>) {
@@ -30,13 +31,6 @@ pub struct WrappedHandler {
     encryptor: Arc<dyn EncryptorT>,
 }
 
-#[derive(Debug)]
-pub struct Effects {
-    pub settles: Vec<Settle>,
-    pub transfers: Vec<Transfer>,
-    pub checkpoint: Vec<u8>,
-}
-
 impl WrappedHandler {
     /// Load WASM bundle by game address
     pub async fn load_by_bundle(
@@ -75,7 +69,7 @@ impl WrappedHandler {
         &mut self,
         context: &mut GameContext,
         init_account: &InitAccount,
-    ) -> Result<()> {
+    ) -> Result<EventEffects> {
         let memory = self
             .instance
             .exports
@@ -91,12 +85,10 @@ impl WrappedHandler {
             .get_typed_function(&self.store, "init_state")
             .map_err(|e| Error::WasmInitializationError(e.to_string()))?;
         let mem_view = memory.view(&self.store);
-        let effect = context.derive_effect();
-        let effect_bs = effect
-            .try_to_vec()
-            .map_err(|e| Error::WasmInitializationError(e.to_string()))?;
-        let init_account_bs = init_account
-            .try_to_vec()
+        let effect = context.derive_effect(true);
+        let effect_bs =
+            borsh::to_vec(&effect).map_err(|e| Error::WasmInitializationError(e.to_string()))?;
+        let init_account_bs = borsh::to_vec(&init_account)
             .map_err(|e| Error::WasmInitializationError(e.to_string()))?;
         let mut offset = 1u32;
         mem_view
@@ -116,18 +108,23 @@ impl WrappedHandler {
             )
             .map_err(|e| Error::WasmInitializationError(e.to_string()))?;
 
-        if len == 0 {
-            return Err(Error::WasmInitializationError(
-                "Seriliazing effect failed".into(),
-            ));
-        } else if len == 1 {
-            return Err(Error::WasmInitializationError(
-                "Deserializing effect failed".into(),
-            ));
-        } else if len == 2 {
-            return Err(Error::WasmInitializationError(
-                "Deserializing event failed".into(),
-            ));
+        match len {
+            0 => {
+                return Err(Error::WasmInitializationError(
+                    "Serializing effect failed".into(),
+                ))
+            }
+            1 => {
+                return Err(Error::WasmInitializationError(
+                    "Deserializing effect failed".into(),
+                ))
+            }
+            2 => {
+                return Err(Error::WasmInitializationError(
+                    "Deserializing event failed".into(),
+                ))
+            }
+            _ => (),
         }
 
         let mut buf = vec![0; len as _];
@@ -144,7 +141,11 @@ impl WrappedHandler {
         }
     }
 
-    fn custom_handle_event(&mut self, context: &mut GameContext, event: &Event) -> Result<()> {
+    fn custom_handle_event(
+        &mut self,
+        context: &mut GameContext,
+        event: &Event,
+    ) -> Result<EventEffects> {
         let memory = self
             .instance
             .exports
@@ -156,13 +157,11 @@ impl WrappedHandler {
             .get_typed_function(&self.store, "handle_event")
             .map_err(|e| Error::WasmExecutionError(e.to_string()))?;
         let mem_view = memory.view(&self.store);
-        let effect = context.derive_effect();
-        let effect_bs = effect
-            .try_to_vec()
-            .map_err(|e| Error::WasmExecutionError(e.to_string()))?;
-        let event_bs = event
-            .try_to_vec()
-            .map_err(|e| Error::WasmExecutionError(e.to_string()))?;
+        let effect = context.derive_effect(false);
+        let effect_bs =
+            borsh::to_vec(&effect).map_err(|e| Error::WasmExecutionError(e.to_string()))?;
+        let event_bs =
+            borsh::to_vec(&event).map_err(|e| Error::WasmExecutionError(e.to_string()))?;
         let mut offset = 1u32;
         mem_view
             .write(offset as _, &effect_bs)
@@ -180,8 +179,26 @@ impl WrappedHandler {
                 Error::WasmExecutionError(e.to_string())
             })?;
 
-        if len == 0 {
-            return Err(Error::WasmExecutionError("Internal error".into()));
+        match len {
+            0 => {
+                error!("Effect: {:?}", effect_bs);
+                return Err(Error::WasmExecutionError(
+                    "Serializing effect failed".into(),
+                ));
+            }
+            1 => {
+                error!("Effect: {:?}", effect_bs);
+                return Err(Error::WasmExecutionError(
+                    "Deserializing effect failed".into(),
+                ));
+            }
+            2 => {
+                error!("Effect: {:?}", effect_bs);
+                return Err(Error::WasmExecutionError(
+                    "Deserializing event failed".into(),
+                ));
+            }
+            _ => (),
         }
 
         let mut buf = vec![0; len as _];
@@ -192,6 +209,7 @@ impl WrappedHandler {
         let mut effect =
             Effect::try_from_slice(&buf).map_err(|e| Error::WasmExecutionError(e.to_string()))?;
         if let Some(e) = effect.__take_error() {
+            error!("Effect: {:?}", effect_bs);
             Err(e.into())
         } else {
             context.apply_effect(effect)
@@ -202,36 +220,35 @@ impl WrappedHandler {
         &mut self,
         context: &mut GameContext,
         event: &Event,
-    ) -> Result<Option<Effects>> {
+    ) -> Result<EventEffects> {
         let mut new_context = context.clone();
         general_handle_event(&mut new_context, event, self.encryptor.as_ref())?;
-        self.custom_handle_event(&mut new_context, event)?;
-        post_handle_event(context, &mut new_context)?;
-        let settles_and_transfers = new_context.take_settles_and_transfers()?;
+        let event_effects = self.custom_handle_event(&mut new_context, event)?;
         swap(context, &mut new_context);
-        if let Some((settles, transfers, checkpoint)) = settles_and_transfers {
-            Ok(Some(Effects { settles, transfers, checkpoint }))
-        } else {
-            Ok(None)
-        }
+        Ok(event_effects)
     }
 
+    // Initialize game state
     pub fn init_state(
         &mut self,
         context: &mut GameContext,
         init_account: &InitAccount,
-    ) -> Result<()> {
+    ) -> Result<EventEffects> {
         let mut new_context = context.clone();
-        general_init_state(&mut new_context, init_account)?;
-        self.custom_init_state(&mut new_context, init_account)?;
+        new_context.set_timestamp(0);
+        let event_effects = self.custom_init_state(&mut new_context, init_account)?;
         swap(context, &mut new_context);
-        Ok(())
+        Ok(event_effects)
     }
 }
 
 #[cfg(test)]
 mod tests {
-    use race_api::{prelude::{CustomEvent, HandleError}, types::GameStatus};
+    use borsh::BorshSerialize;
+    use race_api::{
+        prelude::{CustomEvent, HandleError},
+        types::GameStatus,
+    };
     use race_test::prelude::*;
 
     use super::*;
@@ -252,13 +269,14 @@ mod tests {
         }
     }
 
-    fn make_game_account() -> GameAccount {
+    fn setup_game() -> (GameAccount, TestClient) {
         let data = MinimalAccountData { init_n: 42 };
-        let transactor = TestClient::transactor("transactor");
-        TestGameAccountBuilder::default()
-            .set_transactor(&transactor)
+        let mut transactor = TestClient::transactor("transactor");
+        let acc = TestGameAccountBuilder::default()
+            .set_transactor(&mut transactor)
             .with_data(data)
-            .build()
+            .build();
+        (acc, transactor)
     }
 
     fn make_wrapped_handler() -> WrappedHandler {
@@ -270,9 +288,9 @@ mod tests {
     #[test]
     fn test_init_state() {
         let mut hdlr = make_wrapped_handler();
-        let game_account = make_game_account();
-        let init_account = game_account.derive_init_account();
-        let mut ctx = GameContext::try_new(&game_account).unwrap();
+        let (game_account, _tx) = setup_game();
+        let mut ctx = GameContext::try_new(&game_account, None).unwrap();
+        let init_account = ctx.init_account().unwrap();
         hdlr.init_state(&mut ctx, &init_account).unwrap();
         assert_eq!(
             &vec![42u8, 0, 0, 0, 0, 0, 0, 0],
@@ -283,12 +301,10 @@ mod tests {
     #[test]
     fn test_handle_event() {
         let mut hdlr = make_wrapped_handler();
-        let game_account = make_game_account();
-        let mut ctx = GameContext::try_new(&game_account).unwrap();
-        let event = Event::GameStart {
-            access_version: game_account.access_version,
-        };
-        let init_account = game_account.derive_init_account();
+        let (game_account, _tx) = setup_game();
+        let mut ctx = GameContext::try_new(&game_account, None).unwrap();
+        let event = Event::GameStart;
+        let init_account = ctx.init_account().unwrap();
         hdlr.init_state(&mut ctx, &init_account).unwrap();
         println!("ctx: {:?}", ctx);
         hdlr.handle_event(&mut ctx, &event).unwrap();
@@ -302,10 +318,10 @@ mod tests {
     #[test]
     fn test_handle_custom_event() {
         let mut hdlr = make_wrapped_handler();
-        let game_account = make_game_account();
-        let mut ctx = GameContext::try_new(&game_account).unwrap();
-        let event = Event::custom("Alice", &MinimalEvent::Increment(1));
-        let init_account = game_account.derive_init_account();
+        let (game_account, _tx) = setup_game();
+        let mut ctx = GameContext::try_new(&game_account, None).unwrap();
+        let event = Event::custom(0, &MinimalEvent::Increment(1));
+        let init_account = ctx.init_account().unwrap();
         hdlr.init_state(&mut ctx, &init_account).unwrap();
         println!("ctx: {:?}", ctx);
         hdlr.handle_event(&mut ctx, &event).unwrap();
diff --git a/transactor/src/component/wrapped_storage.rs b/transactor/src/component/wrapped_storage.rs
new file mode 100644
index 00000000..3f515cef
--- /dev/null
+++ b/transactor/src/component/wrapped_storage.rs
@@ -0,0 +1,32 @@
+use race_core::{checkpoint::CheckpointOffChain, storage::StorageT, types::{GetCheckpointParams, SaveCheckpointParams}};
+use race_env::Config;
+use jsonrpsee::core::async_trait;
+use race_api::error::Result;
+use race_local_db::LocalDbStorage;
+
+pub struct WrappedStorage {
+    pub(crate) inner: Box<dyn StorageT>,
+}
+
+impl WrappedStorage {
+    pub async fn try_new(config: &Config) -> Result<Self> {
+        let storage = if let Some(ref storage_config) = config.storage {
+            LocalDbStorage::try_new(&storage_config.db_file_name)?
+        } else {
+            LocalDbStorage::try_new_mem()?
+        };
+
+        Ok(Self { inner: Box::new(storage) })
+    }
+}
+
+#[async_trait]
+impl StorageT for WrappedStorage {
+    async fn save_checkpoint(&self, params: SaveCheckpointParams) -> Result<()> {
+        self.inner.save_checkpoint(params).await
+    }
+
+    async fn get_checkpoint(&self, params: GetCheckpointParams) -> Result<Option<CheckpointOffChain>> {
+        self.inner.get_checkpoint(params).await
+    }
+}
diff --git a/transactor/src/component/wrapped_transport.rs b/transactor/src/component/wrapped_transport.rs
index a9c6b6a2..7595182c 100644
--- a/transactor/src/component/wrapped_transport.rs
+++ b/transactor/src/component/wrapped_transport.rs
@@ -1,5 +1,6 @@
 //! Wrapped transport, which support retry
 
+use futures::Stream;
 use jsonrpsee::core::async_trait;
 use race_api::error::Result;
 use race_core::types::{
@@ -16,13 +17,15 @@ use race_core::{
 };
 use race_env::Config;
 use race_transport::TransportBuilder;
+use std::pin::Pin;
 use std::time::Duration;
 use tracing::error;
 
-const RETRY_INTERVAL: u64 = 10;
+const DEFAULT_RETRY_INTERVAL: u64 = 10_000;
 
 pub struct WrappedTransport {
     pub(crate) inner: Box<dyn TransportT>,
+    retry_interval: u64,
 }
 
 impl WrappedTransport {
@@ -37,12 +40,16 @@ impl WrappedTransport {
             .try_with_config(config)?
             .build()
             .await?;
-        Ok(Self { inner: transport })
+        Ok(Self { inner: transport, retry_interval: DEFAULT_RETRY_INTERVAL })
     }
 }
 
 #[async_trait]
 impl TransportT for WrappedTransport {
+    async fn subscribe_game_account<'a>(&'a self, addr: &'a str) -> Result<Pin<Box<dyn Stream<Item = Option<GameAccount>> + Send + 'a>>> {
+        self.inner.subscribe_game_account(addr).await
+    }
+
     async fn create_game_account(&self, params: CreateGameAccountParams) -> Result<String> {
         self.inner.create_game_account(params).await
     }
@@ -93,46 +100,51 @@ impl TransportT for WrappedTransport {
 
     /// `settle_version` is used to identify the settle state,
     /// Until the `settle_version` is bumped, we keep retrying.
-    async fn settle_game(&self, params: SettleParams) -> Result<()> {
+    async fn settle_game(&self, params: SettleParams) -> Result<String> {
         let mut curr_settle_version: Option<u64> = None;
         loop {
             let game_account = self
                 .inner
                 .get_game_account(&params.addr, QueryMode::Finalized)
                 .await;
+            println!("Game Account: {:?}", game_account);  // --------------
             if let Ok(Some(game_account)) = game_account {
                 // We got an old state, which has a smaller `settle_version`
                 if game_account.settle_version < params.settle_version {
                     error!(
                         "Got invalid settle_version: {} != {}, will retry in {} secs",
-                        game_account.settle_version, params.settle_version, RETRY_INTERVAL
+                        game_account.settle_version, params.settle_version, self.retry_interval
                     );
-                    tokio::time::sleep(Duration::from_secs(RETRY_INTERVAL)).await;
+                    tokio::time::sleep(Duration::from_millis(self.retry_interval)).await;
                     continue;
                 }
-                // The `settle_version` had been bumped, indicates the transaction was succeed
-                // NOTE: The transaction can success with error result due to unstable network
+                // The `settle_version` had been bumped, which
+                // indicates the transaction was succeed
+
+                //NOTE: The transaction may success with error result
+                // due to unstable network
                 if curr_settle_version.is_some_and(|v| v < game_account.settle_version) {
-                    return Ok(());
+                    return Ok("".into());
                 }
                 curr_settle_version = Some(game_account.settle_version);
-                if let Err(e) = self.inner.settle_game(params.clone()).await {
-                    error!(
-                        "Error in settlement: {:?}, will retry in {} secs",
-                        e, RETRY_INTERVAL
-                    );
-                    tokio::time::sleep(Duration::from_secs(RETRY_INTERVAL)).await;
-                    continue;
-                } else {
-                    return Ok(());
+                match self.inner.settle_game(params.clone()).await {
+                    Ok(sig) => return Ok(sig),
+                    Err(e) => {
+                        error!(
+                            "Error in settlement: {:?}, will retry in {} secs",
+                            e, self.retry_interval
+                        );
+                        tokio::time::sleep(Duration::from_millis(self.retry_interval)).await;
+                        continue;
+                    }
                 }
             } else {
                 error!(
                     "Error in settlement due to unable to get game account {}, will retry in {} secs",
                     params.addr,
-                    RETRY_INTERVAL
+                    self.retry_interval
                 );
-                tokio::time::sleep(Duration::from_secs(RETRY_INTERVAL)).await;
+                tokio::time::sleep(Duration::from_millis(self.retry_interval)).await;
                 continue;
             }
         }
@@ -177,6 +189,7 @@ impl TransportT for WrappedTransport {
 
 #[cfg(test)]
 mod tests {
+    use race_core::checkpoint::CheckpointOnChain;
     use race_test::prelude::{test_game_addr, DummyTransport, TestGameAccountBuilder};
 
     use super::*;
@@ -188,19 +201,19 @@ mod tests {
         let mut ga1 = TestGameAccountBuilder::new().build();
         ga1.settle_version = 1;
         t.simulate_states(vec![ga0, ga1]);
-        let wt = WrappedTransport { inner: Box::new(t) };
+        let wt = WrappedTransport { inner: Box::new(t), retry_interval: 1 };
         let r = wt
             .settle_game(SettleParams {
                 addr: test_game_addr(),
                 settles: vec![],
                 transfers: vec![],
-                checkpoint: vec![],
+                checkpoint: CheckpointOnChain::default(),
                 settle_version: 1,
                 next_settle_version: 2,
             })
             .await;
 
-        assert_eq!(r, Ok(()));
+        assert_eq!(r, Ok("".to_string()));
         Ok(())
     }
 
@@ -212,19 +225,19 @@ mod tests {
         let mut ga1 = TestGameAccountBuilder::new().build();
         ga1.settle_version = 1;
         t.simulate_states(vec![ga0, ga1]);
-        let wt = WrappedTransport { inner: Box::new(t) };
+        let wt = WrappedTransport { inner: Box::new(t), retry_interval: 1 };
         let r = wt
             .settle_game(SettleParams {
                 addr: test_game_addr(),
-                settles: vec![],
                 transfers: vec![],
-                checkpoint: vec![],
-                settle_version: 1,
+                settles: vec![],
+                checkpoint: CheckpointOnChain::default(),
+                settle_version: 0,
                 next_settle_version: 2,
             })
             .await;
 
-        assert_eq!(r, Ok(()));
+        assert_eq!(r, Ok("".to_string()));
         Ok(())
     }
 }
diff --git a/transactor/src/context.rs b/transactor/src/context.rs
index 96c0c3fa..944df672 100644
--- a/transactor/src/context.rs
+++ b/transactor/src/context.rs
@@ -1,10 +1,10 @@
 use crate::blacklist::Blacklist;
-use crate::component::WrappedTransport;
+use crate::component::{WrappedStorage, WrappedTransport};
 use crate::frame::SignalFrame;
 use crate::game_manager::GameManager;
-use race_core::encryptor::{EncryptorT, NodePublicKeyRaw};
 use race_api::error::{Error, Result};
 use race_api::event::{Event, Message};
+use race_core::encryptor::{EncryptorT, NodePublicKeyRaw};
 use race_core::transport::TransportT;
 use race_core::types::{BroadcastFrame, ServerAccount, Signature};
 use race_encryptor::Encryptor;
@@ -32,6 +32,8 @@ impl ApplicationContext {
 
         let transport = Arc::new(WrappedTransport::try_new(&config).await?);
 
+        let storage = Arc::new(WrappedStorage::try_new(&config).await?);
+
         let encryptor = Arc::new(Encryptor::default());
 
         let transactor_config = config.transactor.ok_or(Error::TransactorConfigMissing)?;
@@ -45,32 +47,70 @@ impl ApplicationContext {
             .await?
             .ok_or(Error::ServerAccountMissing)?;
 
+        let debug_mode = transactor_config.debug_mode.unwrap_or(false);
+
         let game_manager = Arc::new(GameManager::default());
-        let game_manager_1 = game_manager.clone();
 
         let (signal_tx, mut signal_rx) = mpsc::channel(3);
 
-        let transport_1 = transport.clone();
-        let encryptor_1 = encryptor.clone();
-        let account_1 = account.clone();
-        let blacklist = Arc::new(Mutex::new(Blacklist::new(transactor_config.disable_blacklist.ne(&(Some(true))))));
-        let blacklist_1 = blacklist.clone();
+        let blacklist = Arc::new(Mutex::new(Blacklist::new(
+            transactor_config.disable_blacklist.ne(&(Some(true))),
+        )));
+
+        let game_manager_0 = game_manager.clone();
+        let transport_0 = transport.clone();
+        let storage_0 = storage.clone();
+        let encryptor_0 = encryptor.clone();
+        let account_0 = account.clone();
+        let blacklist_0 = blacklist.clone();
+        let signal_tx_0 = signal_tx.clone();
 
         tokio::spawn(async move {
             while let Some(signal) = signal_rx.recv().await {
-                match signal {
-                    SignalFrame::StartGame { game_addr } => {
-                        game_manager_1
-                            .load_game(
-                                game_addr,
-                                transport_1.clone(),
-                                encryptor_1.clone(),
-                                &account_1,
-                                blacklist_1.clone(),
-                            )
-                            .await;
+                let game_manager_1 = game_manager_0.clone();
+                let transport_1 = transport_0.clone();
+                let storage_1 = storage_0.clone();
+                let encryptor_1 = encryptor_0.clone();
+                let account_1 = account_0.clone();
+                let blacklist_1 = blacklist_0.clone();
+                let signal_tx_1 = signal_tx_0.clone();
+                tokio::spawn(async move {
+                    match signal {
+                        SignalFrame::StartGame { game_addr } => {
+                            game_manager_1
+                                .load_game(
+                                    game_addr,
+                                    transport_1.clone(),
+                                    storage_1.clone(),
+                                    encryptor_1.clone(),
+                                    &account_1,
+                                    blacklist_1.clone(),
+                                    signal_tx_1.clone(),
+                                    debug_mode,
+                                )
+                                .await;
+                        }
+                        SignalFrame::LaunchSubGame { spec } => {
+                            let bridge_parent = game_manager_1
+                                .get_event_parent(&spec.game_addr)
+                                .await
+                                .expect(
+                                    format!("Bridge parent not found: {}", spec.game_addr).as_str(),
+                                );
+
+                            game_manager_1
+                                .launch_sub_game(
+                                    spec,
+                                    bridge_parent,
+                                    &account_1,
+                                    transport_1.clone(),
+                                    encryptor_1.clone(),
+                                    debug_mode,
+                                )
+                                .await;
+                        }
                     }
-                }
+                });
             }
         });
 
@@ -87,7 +127,6 @@ impl ApplicationContext {
     }
 
     pub async fn register_key(&self, player_addr: String, key: NodePublicKeyRaw) -> Result<()> {
-        // info!("Client {:?} register public key, {:?}", player_addr, key);
         self.encryptor.add_public_key(player_addr, &key)?;
         Ok(())
     }
diff --git a/transactor/src/frame.rs b/transactor/src/frame.rs
index bf7c9b9c..1f8d573d 100644
--- a/transactor/src/frame.rs
+++ b/transactor/src/frame.rs
@@ -1,21 +1,25 @@
 use borsh::{BorshDeserialize, BorshSerialize};
 use race_api::{
-    engine::InitAccount,
-    event::{Event, Message},
+    init_account::InitAccount,
+    event::{Event, Message}
 };
 use race_core::{
     context::GameContext,
-    types::{PlayerJoin, ServerJoin, Settle, Transfer, TxState, VoteType},
+    types::{PlayerJoin, ServerJoin, SettleWithAddr, SubGameSpec, Transfer, TxState, VoteType}, checkpoint::Checkpoint,
 };
 
 #[derive(Debug, Clone)]
 pub enum SignalFrame {
     StartGame { game_addr: String },
+    LaunchSubGame { spec: SubGameSpec },
 }
 
 #[derive(Debug, Clone, BorshSerialize, BorshDeserialize)]
 pub enum EventFrame {
     Empty,
+    GameStart {
+        access_version: u64,
+    },
     Sync {
         new_players: Vec<PlayerJoin>,
         new_servers: Vec<ServerJoin>,
@@ -33,35 +37,36 @@ pub enum EventFrame {
         player_addr: String,
     },
     InitState {
+        access_version: u64,
+        settle_version: u64,
         init_account: InitAccount,
     },
     SendEvent {
         event: Event,
+        timestamp: u64,
     },
     SendMessage {
         message: Message,
     },
     SendServerEvent {
         event: Event,
+        timestamp: u64,
     },
     Checkpoint {
+        settles: Vec<SettleWithAddr>,
+        transfers: Vec<Transfer>,
+        checkpoint: Checkpoint,
         access_version: u64,
         settle_version: u64,
+        previous_settle_version: u64,
+        state_sha: String,
     },
     Broadcast {
         event: Event,
         access_version: u64,
         settle_version: u64,
         timestamp: u64,
-    },
-    Settle {
-        settles: Vec<Settle>,
-        transfers: Vec<Transfer>,
-        checkpoint: Vec<u8>,
-        settle_version: u64,
-    },
-    SettleFinalized {
-        settle_version: u64,
+        state_sha: String,
     },
     ContextUpdated {
         context: Box<GameContext>,
@@ -71,16 +76,44 @@ pub enum EventFrame {
         vote_type: VoteType,
     },
     Shutdown,
+    /// Represent a event send in current event bus.  `from` is the
+    /// source of event, `dest` is the target of the event.  value 0
+    /// represent the master game.  When there's an available
+    /// checkpoint in the context, it will be sent along with
+    /// `checkpoint`.
+    SendBridgeEvent {
+        from: usize,
+        dest: usize,
+        event: Event,
+        access_version: u64,
+        settle_version: u64,
+        checkpoint: Vec<u8>,
+    },
+    /// Similar to `SendBridgeEvent`, but for receiver's event bus.
+    RecvBridgeEvent {
+        from: usize,
+        dest: usize,
+        event: Event,
+        access_version: u64,
+        settle_version: u64,
+        checkpoint: Vec<u8>,
+    },
+    LaunchSubGame {
+        spec: Box<SubGameSpec>,
+    },
 }
 
 impl std::fmt::Display for EventFrame {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             EventFrame::Empty => write!(f, "Empty"),
-            EventFrame::InitState { init_account, .. } => write!(
+            EventFrame::GameStart { access_version } => {
+                write!(f, "GameStart, access_version = {}", access_version)
+            }
+            EventFrame::InitState { access_version, settle_version, .. } => write!(
                 f,
                 "InitState, access_version = {}, settle_version = {}",
-                init_account.access_version, init_account.settle_version
+                access_version, settle_version
             ),
             EventFrame::Sync {
                 new_players,
@@ -103,18 +136,25 @@ impl std::fmt::Display for EventFrame {
             ),
             EventFrame::PlayerDeposited { .. } => write!(f, "PlayerDeposited"),
             EventFrame::PlayerLeaving { .. } => write!(f, "PlayerLeaving"),
-            EventFrame::SendEvent { event } => write!(f, "SendEvent: {}", event),
-            EventFrame::SendServerEvent { event } => write!(f, "SendServerEvent: {}", event),
+            EventFrame::SendEvent { event, .. } => write!(f, "SendEvent: {}", event),
+            EventFrame::SendServerEvent { event, .. } => write!(f, "SendServerEvent: {}", event),
             EventFrame::Checkpoint { .. } => write!(f, "Checkpoint"),
             EventFrame::Broadcast { event, .. } => write!(f, "Broadcast: {}", event),
-            EventFrame::Settle { .. } => write!(f, "Settle"),
-            EventFrame::SettleFinalized { .. } => write!(f, "SettleFinalized"),
             EventFrame::SendMessage { message } => write!(f, "SendMessage: {}", message.sender),
             EventFrame::ContextUpdated { context: _ } => write!(f, "ContextUpdated"),
             EventFrame::Shutdown => write!(f, "Shutdown"),
             EventFrame::Vote { votee, vote_type } => {
                 write!(f, "Vote: to {} for {:?}", votee, vote_type)
             }
+            EventFrame::SendBridgeEvent { dest, event, settle_version, .. } => {
+                write!(f, "SendBridgeEvent: dest {}, settle_version: {}, event: {}", dest, settle_version, event)
+            }
+            EventFrame::RecvBridgeEvent { dest, event, settle_version, .. } => {
+                write!(f, "RecvBridgeEvent: dest {}, settle_version: {}, event: {}", dest, settle_version, event)
+            }
+            EventFrame::LaunchSubGame { spec } => {
+                write!(f, "LaunchSubGame: {:?}", spec)
+            }
         }
     }
 }
diff --git a/transactor/src/game_manager.rs b/transactor/src/game_manager.rs
index 1b9e913d..40b2cf03 100644
--- a/transactor/src/game_manager.rs
+++ b/transactor/src/game_manager.rs
@@ -1,17 +1,20 @@
 use race_api::error::{Error, Result};
 use race_api::event::{Event, Message};
-use race_core::types::{BroadcastFrame, ServerAccount};
+use race_core::checkpoint::CheckpointOffChain;
+use race_core::types::{BroadcastFrame, ServerAccount, SubGameSpec};
 use race_encryptor::Encryptor;
 use std::collections::hash_map::Entry;
 use std::collections::HashMap;
 use std::sync::Arc;
-use tokio::sync::{broadcast, Mutex};
+use tokio::sync::{broadcast, Mutex, mpsc};
+use tokio::task::JoinHandle;
 use tracing::{error, info, warn};
 
 use crate::blacklist::Blacklist;
-use crate::component::{CloseReason, WrappedTransport};
-use crate::frame::EventFrame;
+use crate::component::{CloseReason, EventBridgeParent, WrappedStorage, WrappedTransport};
+use crate::frame::{EventFrame, SignalFrame};
 use crate::handle::Handle;
+use crate::utils::current_timestamp;
 
 pub struct GameManager {
     games: Arc<Mutex<HashMap<String, Handle>>>,
@@ -25,43 +28,88 @@ impl Default for GameManager {
     }
 }
 
+fn wait_and_unload(
+    game_addr: String,
+    join_handle: JoinHandle<CloseReason>,
+    games: Arc<Mutex<HashMap<String, Handle>>>,
+    blacklist: Option<Arc<Mutex<Blacklist>>>,
+) {
+    // Wait and unload
+    tokio::spawn(async move {
+        match join_handle.await {
+            Ok(CloseReason::Complete) => {
+                let mut games = games.lock().await;
+                games.remove(&game_addr);
+                info!("Clean game handle: {}", game_addr);
+            }
+            Ok(CloseReason::Fault(_)) => {
+                let mut games = games.lock().await;
+                games.remove(&game_addr);
+                if let Some(blacklist) = blacklist {
+                    blacklist.lock().await.add_addr(&game_addr);
+                    info!("Game stopped with error, clean game handle: {}", game_addr);
+                }
+            }
+            Err(e) => {
+                error!("Unexpected error when waiting game to stop: {}", e);
+            }
+        }
+    });
+}
+
 impl GameManager {
+    /// Load a sub game
+    pub async fn launch_sub_game(
+        &self,
+        spec: SubGameSpec,
+        bridge_parent: EventBridgeParent,
+        server_account: &ServerAccount,
+        transport: Arc<WrappedTransport>,
+        encryptor: Arc<Encryptor>,
+        debug_mode: bool,
+    ) {
+        let game_addr = spec.game_addr.clone();
+        let game_id = spec.game_id;
+        match Handle::try_new_sub_game_handle(spec, bridge_parent, server_account, encryptor, transport, debug_mode).await {
+            Ok(mut handle) => {
+                let mut games = self.games.lock().await;
+                let addr = format!("{}:{}", game_addr, game_id);
+                info!("Launch sub game {}", addr);
+                let join_handle = handle.wait();
+                games.insert(addr.clone(), handle);
+                wait_and_unload(addr, join_handle, self.games.clone(), None);
+            }
+            Err(e) => {
+                warn!(
+                    "Error loading sub game with id {}: {}",
+                    game_id,
+                    e.to_string()
+                );
+            }
+        }
+    }
+
     /// Load game by its address.  This operation is idempotent.
     pub async fn load_game(
         &self,
         game_addr: String,
         transport: Arc<WrappedTransport>,
+        storage: Arc<WrappedStorage>,
         encryptor: Arc<Encryptor>,
         server_account: &ServerAccount,
         blacklist: Arc<Mutex<Blacklist>>,
+        signal_tx: mpsc::Sender<SignalFrame>,
+        debug_mode: bool,
     ) {
         let mut games = self.games.lock().await;
         if let Entry::Vacant(e) = games.entry(game_addr.clone()) {
-            match Handle::try_new(transport, encryptor, server_account, e.key()).await {
+            match Handle::try_new(transport, storage, encryptor, server_account, e.key(), signal_tx, debug_mode).await {
                 Ok(mut handle) => {
                     info!("Game handle created: {}", e.key());
                     let join_handle = handle.wait();
                     e.insert(handle);
-                    let games = self.games.clone();
-                    // Wait and unload
-                    tokio::spawn(async move {
-                        match join_handle.await {
-                            Ok(CloseReason::Complete) => {
-                                let mut games = games.lock().await;
-                                games.remove(&game_addr);
-                                info!("Clean game handle: {}", game_addr);
-                            }
-                            Ok(CloseReason::Fault(_)) => {
-                                let mut games = games.lock().await;
-                                games.remove(&game_addr);
-                                blacklist.lock().await.add_addr(&game_addr);
-                                info!("Game stopped with error, clean game handle: {}", game_addr);
-                            }
-                            Err(e) => {
-                                error!("Unexpected error when waiting game to stop: {}", e);
-                            }
-                        }
-                    });
+                    // TODO: A better handle for errors in initialization
+                    wait_and_unload(game_addr, join_handle, self.games.clone(), Some(blacklist));
                 }
                 Err(err) => {
                     warn!("Error loading game: {}", err.to_string());
@@ -74,13 +122,14 @@ impl GameManager {
 
     pub async fn is_game_loaded(&self, game_addr: &str) -> bool {
         let games = self.games.lock().await;
-        games.get(game_addr).is_some()
+        games.contains_key(game_addr)
     }
 
     pub async fn send_event(&self, game_addr: &str, event: Event) -> Result<()> {
         let games = self.games.lock().await;
         if let Some(handle) = games.get(game_addr) {
-            let event_frame = EventFrame::SendEvent { event };
+            let timestamp = current_timestamp();
+            let event_frame = EventFrame::SendEvent { event, timestamp };
             handle.event_bus().send(event_frame).await;
             Ok(())
         } else {
@@ -122,6 +171,14 @@ impl GameManager {
         }
     }
 
+    pub async fn get_checkpoint(&self, game_addr: &str, settle_version: u64) -> Result<Option<CheckpointOffChain>> {
+        let games = self.games.lock().await;
+        let handle = games.get(game_addr).ok_or(Error::GameNotLoaded)?;
+        let broadcaster = handle.broadcaster()?;
+        let checkpoint = broadcaster.get_checkpoint(settle_version).await;
+        Ok(checkpoint)
+    }
+
     /// Get the broadcast channel of game, and its event histories
     pub async fn get_broadcast(
         &self,
@@ -135,4 +192,11 @@ impl GameManager {
         let histories = broadcaster.retrieve_histories(settle_version).await;
         Ok((receiver, histories))
     }
+
+    pub async fn get_event_parent(&self, game_addr: &str) -> Result<EventBridgeParent> {
+        let games = self.games.lock().await;
+        let handle = games.get(game_addr).ok_or(Error::GameNotLoaded)?;
+        let bridge_parent = handle.event_parent_owned()?;
+        Ok(bridge_parent)
+    }
 }
diff --git a/transactor/src/handle.rs b/transactor/src/handle.rs
index ece7e9a3..e64f073f 100644
--- a/transactor/src/handle.rs
+++ b/transactor/src/handle.rs
@@ -1,193 +1,29 @@
+mod subgame;
+mod transactor;
+mod validator;
+
 use std::sync::Arc;
 
 use crate::component::{
-    Broadcaster, Component, EventBus, EventLoop, GameSynchronizer, LocalConnection, PortsHandle,
-    RemoteConnection, Submitter, Subscriber, Voter, WrappedClient, WrappedHandler, WrappedTransport, CloseReason,
+    Broadcaster, CloseReason, EventBridgeParent, EventBus, WrappedStorage, WrappedTransport,
 };
-use crate::frame::EventFrame;
-use race_core::context::GameContext;
+use crate::frame::SignalFrame;
 use race_api::error::{Error, Result};
+use race_core::storage::StorageT;
 use race_core::transport::TransportT;
-use race_core::types::{ClientMode, GameAccount, GameBundle, ServerAccount, QueryMode};
+use race_core::types::{GetCheckpointParams, QueryMode, ServerAccount, SubGameSpec};
 use race_encryptor::Encryptor;
+use subgame::SubGameHandle;
+use tokio::sync::mpsc;
 use tokio::task::JoinHandle;
 use tracing::info;
+use transactor::TransactorHandle;
+use validator::ValidatorHandle;
 
 pub enum Handle {
     Transactor(TransactorHandle),
     Validator(ValidatorHandle),
-}
-
-#[allow(dead_code)]
-pub struct TransactorHandle {
-    addr: String,
-    handles: Vec<PortsHandle>,
-    event_bus: EventBus,
-    broadcaster: Broadcaster,
-}
-
-impl TransactorHandle {
-    pub async fn try_new(
-        game_account: &GameAccount,
-        server_account: &ServerAccount,
-        bundle_account: &GameBundle,
-        encryptor: Arc<Encryptor>,
-        transport: Arc<dyn TransportT + Send + Sync>,
-    ) -> Result<Self> {
-        info!(
-            "Start game handle for {} with Transactor mode",
-            game_account.addr
-        );
-
-        let game_context = GameContext::try_new(game_account)?;
-        let handler = WrappedHandler::load_by_bundle(bundle_account, encryptor.clone()).await?;
-
-        let event_bus = EventBus::default();
-
-        let (broadcaster, broadcaster_ctx) = Broadcaster::init(game_account);
-        let mut broadcaster_handle = broadcaster.start(broadcaster_ctx);
-
-        let (event_loop, event_loop_ctx) =
-            EventLoop::init(handler, game_context, ClientMode::Transactor);
-        let mut event_loop_handle = event_loop.start(event_loop_ctx);
-
-        let (submitter, submitter_ctx) = Submitter::init(game_account, transport.clone());
-        let mut submitter_handle = submitter.start(submitter_ctx);
-
-        let (synchronizer, synchronizer_ctx) =
-            GameSynchronizer::init(transport.clone(), game_account);
-
-        let mut connection = LocalConnection::new(encryptor.clone());
-
-        event_bus.attach(&mut connection).await;
-        let (client, client_ctx) = WrappedClient::init(
-            server_account,
-            game_account,
-            transport.clone(),
-            encryptor,
-            Arc::new(connection),
-        );
-        let mut client_handle = client.start(client_ctx);
-
-        info!("Attaching components");
-        event_bus.attach(&mut broadcaster_handle).await;
-        event_bus.attach(&mut submitter_handle).await;
-        event_bus.attach(&mut event_loop_handle).await;
-        event_bus.attach(&mut client_handle).await;
-
-        // Dispatch init state
-        let init_account = game_account.derive_init_account();
-        info!("InitAccount: {:?}", init_account);
-        event_bus
-            .send(EventFrame::InitState {init_account})
-            .await;
-
-        let mut synchronizer_handle = synchronizer.start(synchronizer_ctx);
-        event_bus.attach(&mut synchronizer_handle).await;
-
-        Ok(Self {
-            addr: game_account.addr.clone(),
-            event_bus,
-            handles: vec![
-                broadcaster_handle,
-                submitter_handle,
-                event_loop_handle,
-                client_handle,
-                synchronizer_handle,
-            ],
-            broadcaster,
-        })
-    }
-}
-
-#[allow(dead_code)]
-pub struct ValidatorHandle {
-    addr: String,
-    event_bus: EventBus,
-    handles: Vec<PortsHandle>,
-}
-
-impl ValidatorHandle {
-    pub async fn try_new(
-        game_account: &GameAccount,
-        server_account: &ServerAccount,
-        bundle_account: &GameBundle,
-        encryptor: Arc<Encryptor>,
-        transport: Arc<WrappedTransport>,
-    ) -> Result<Self> {
-        info!(
-            "Start game handle for {} with Validator mode",
-            game_account.addr
-        );
-        let game_context = GameContext::try_new(game_account)?;
-        let handler = WrappedHandler::load_by_bundle(bundle_account, encryptor.clone()).await?;
-
-        let transactor_addr = game_account
-            .transactor_addr
-            .as_ref()
-            .ok_or(Error::GameNotServed)?;
-        let transactor_account = transport
-            .get_server_account(transactor_addr)
-            .await?
-            .ok_or(Error::CantFindTransactor)?;
-
-        info!("Creating components");
-        let event_bus = EventBus::default();
-
-        let (event_loop, event_loop_ctx) =
-            EventLoop::init(handler, game_context, ClientMode::Validator);
-        let mut event_loop_handle = event_loop.start(event_loop_ctx);
-
-        let connection = Arc::new(
-            RemoteConnection::try_new(
-                &server_account.addr,
-                &transactor_account.endpoint,
-                encryptor.clone(),
-            )
-            .await?,
-        );
-        // let mut subscriber = Subscriber::new(game_account, server_account, connection.clone());
-        let (subscriber, subscriber_context) =
-            Subscriber::init(game_account, server_account, connection.clone());
-        let mut subscriber_handle = subscriber.start(subscriber_context);
-
-        let (client, client_ctx) = WrappedClient::init(
-            server_account,
-            game_account,
-            transport.clone(),
-            encryptor,
-            connection,
-        );
-        let mut client_handle = client.start(client_ctx);
-
-        let (voter, voter_ctx) = Voter::init(game_account, server_account, transport.clone());
-        let mut voter_handle = voter.start(voter_ctx);
-
-        info!("Attaching components");
-        event_bus.attach(&mut event_loop_handle).await;
-        event_bus.attach(&mut voter_handle).await;
-        event_bus.attach(&mut client_handle).await;
-
-        let init_account = game_account.derive_rollbacked_init_account();
-        info!("InitAccount: {:?}", init_account);
-
-        // Dispatch init state
-        event_bus
-            .send(EventFrame::InitState {init_account})
-            .await;
-
-        event_bus.attach(&mut subscriber_handle).await;
-        Ok(Self {
-            addr: game_account.addr.clone(),
-            event_bus,
-            handles: vec![
-                subscriber_handle,
-                client_handle,
-                event_loop_handle,
-                voter_handle,
-            ],
-        })
-    }
+    SubGame(SubGameHandle),
 }
 
 /// The handle to the components set of a game.
@@ -202,17 +38,27 @@ impl Handle {
     /// Create game handle.
     pub async fn try_new(
         transport: Arc<WrappedTransport>,
+        storage: Arc<WrappedStorage>,
         encryptor: Arc<Encryptor>,
         server_account: &ServerAccount,
         addr: &str,
+        signal_tx: mpsc::Sender<SignalFrame>,
+        debug_mode: bool,
     ) -> Result<Self> {
         info!("Try create game handle for {}", addr);
-        let mode = QueryMode::Confirming;
+        let mode = QueryMode::Finalized;
         let game_account = transport
             .get_game_account(addr, mode)
             .await?
             .ok_or(Error::GameAccountNotFound)?;
 
+        let checkpoint_offchain = storage
+            .get_checkpoint(GetCheckpointParams {
+                game_addr: addr.to_owned(),
+                settle_version: game_account.settle_version,
+            })
+            .await?;
+
         if let Some(ref transactor_addr) = game_account.transactor_addr {
             info!("Current transactor: {}", transactor_addr);
             // Query the game bundle
@@ -226,10 +72,14 @@ impl Handle {
                 Ok(Self::Transactor(
                     TransactorHandle::try_new(
                         &game_account,
+                        checkpoint_offchain,
                         server_account,
                         &game_bundle,
                         encryptor.clone(),
                         transport.clone(),
+                        storage.clone(),
+                        signal_tx,
+                        debug_mode,
                     )
                     .await?,
                 ))
@@ -237,10 +87,13 @@ impl Handle {
                 Ok(Self::Validator(
                     ValidatorHandle::try_new(
                         &game_account,
+                        checkpoint_offchain,
                         server_account,
                         &game_bundle,
                         encryptor.clone(),
                         transport.clone(),
+                        signal_tx,
+                        debug_mode,
                     )
                     .await?,
                 ))
@@ -250,10 +103,39 @@ impl Handle {
         }
     }
 
+    pub async fn try_new_sub_game_handle(
+        spec: SubGameSpec,
+        bridge_parent: EventBridgeParent,
+        server_account: &ServerAccount,
+        encryptor: Arc<Encryptor>,
+        transport: Arc<dyn TransportT + Send + Sync>,
+        debug_mode: bool,
+    ) -> Result<Self> {
+        let handle = SubGameHandle::try_new(
+            spec,
+            bridge_parent,
+            server_account,
+            encryptor,
+            transport,
+            debug_mode,
+        )
+        .await?;
+        Ok(Self::SubGame(handle))
+    }
+
     pub fn broadcaster(&self) -> Result<&Broadcaster> {
         match self {
             Handle::Transactor(h) => Ok(&h.broadcaster),
             Handle::Validator(_) => Err(Error::NotSupportedInValidatorMode),
+            Handle::SubGame(h) => Ok(&h.broadcaster),
+        }
+    }
+
+    pub fn event_parent_owned(&self) -> Result<EventBridgeParent> {
+        match self {
+            Handle::Transactor(h) => Ok(h.bridge_parent.to_owned()),
+            Handle::Validator(h) => Ok(h.bridge_parent.to_owned()),
+            Handle::SubGame(_) => Err(Error::NotSupportedInSubGameMode),
         }
     }
 
@@ -261,6 +143,7 @@ impl Handle {
         match self {
             Handle::Transactor(h) => &h.event_bus,
             Handle::Validator(h) => &h.event_bus,
+            Handle::SubGame(h) => &h.event_bus,
         }
     }
 
@@ -268,6 +151,7 @@ impl Handle {
         let handles = match self {
             Handle::Transactor(ref mut x) => &mut x.handles,
             Handle::Validator(ref mut x) => &mut x.handles,
+            Handle::SubGame(ref mut x) => &mut x.handles,
         };
         if handles.is_empty() {
             panic!("Some where else is waiting");
diff --git a/transactor/src/handle/subgame.rs b/transactor/src/handle/subgame.rs
new file mode 100644
index 00000000..b5551de1
--- /dev/null
+++ b/transactor/src/handle/subgame.rs
@@ -0,0 +1,94 @@
+use std::sync::Arc;
+
+use crate::component::{
+    Broadcaster, Component, EventBridgeChild, EventBridgeParent, EventBus, EventLoop,
+    LocalConnection, PortsHandle, WrappedClient, WrappedHandler,
+};
+use crate::frame::EventFrame;
+use race_api::error::{Error, Result};
+use race_core::context::GameContext;
+use race_core::transport::TransportT;
+use race_core::types::{ClientMode, GameMode, ServerAccount, SubGameSpec};
+use race_encryptor::Encryptor;
+
+#[allow(dead_code)]
+pub struct SubGameHandle {
+    pub(crate) addr: String,
+    pub(crate) event_bus: EventBus,
+    pub(crate) handles: Vec<PortsHandle>,
+    pub(crate) broadcaster: Broadcaster,
+    pub(crate) bridge_child: EventBridgeChild,
+}
+
+impl SubGameHandle {
+    pub async fn try_new(
+        spec: SubGameSpec,
+        bridge_parent: EventBridgeParent,
+        server_account: &ServerAccount,
+        encryptor: Arc<Encryptor>,
+        transport: Arc<dyn TransportT + Send + Sync>,
+        debug_mode: bool,
+    ) -> Result<Self> {
+        let game_addr = spec.game_addr.clone();
+        let game_id = spec.game_id.clone();
+        let addr = format!("{}:{}", game_addr, game_id);
+        let event_bus = EventBus::new(addr.to_string());
+
+        let bundle_account = transport
+            .get_game_bundle(&spec.bundle_addr)
+            .await?
+            .ok_or(Error::GameBundleNotFound)?;
+
+        // Build an InitAccount
+        let game_context = GameContext::try_new_with_sub_game_spec(&spec)?;
+
+        let access_version = spec.access_version;
+        let settle_version = spec.settle_version;
+
+        let handler = WrappedHandler::load_by_bundle(&bundle_account, encryptor.clone()).await?;
+
+        let (broadcaster, broadcaster_ctx) = Broadcaster::init(addr.clone(), game_id, debug_mode);
+        let mut broadcaster_handle = broadcaster.start(&addr, broadcaster_ctx);
+
+        let (bridge, bridge_ctx) = bridge_parent.derive_child(game_id.clone());
+        let mut bridge_handle = bridge.start(&addr, bridge_ctx);
+
+        let (event_loop, event_loop_ctx) =
+            EventLoop::init(handler, game_context, ClientMode::Transactor, GameMode::Sub);
+        let mut event_loop_handle = event_loop.start(&addr, event_loop_ctx);
+
+        let mut connection = LocalConnection::new(encryptor.clone());
+
+        event_bus.attach(&mut connection).await;
+
+        let (client, client_ctx) = WrappedClient::init(
+            server_account.addr.clone(),
+            addr.clone(),
+            ClientMode::Transactor,
+            transport.clone(),
+            encryptor,
+            Arc::new(connection),
+        );
+        let mut client_handle = client.start(&addr, client_ctx);
+
+        event_bus.attach(&mut client_handle).await;
+        event_bus.attach(&mut bridge_handle).await;
+        event_bus.attach(&mut broadcaster_handle).await;
+        event_bus.attach(&mut event_loop_handle).await;
+        event_bus
+            .send(EventFrame::InitState {
+                init_account: spec.init_account,
+                access_version,
+                settle_version,
+            })
+            .await;
+
+        Ok(Self {
+            addr: format!("{}:{}", game_addr, game_id),
+            event_bus,
+            handles: vec![broadcaster_handle, bridge_handle, event_loop_handle],
+            broadcaster,
+            bridge_child: bridge,
+        })
+    }
+}
diff --git a/transactor/src/handle/transactor.rs b/transactor/src/handle/transactor.rs
new file mode 100644
index 00000000..8cca9911
--- /dev/null
+++ b/transactor/src/handle/transactor.rs
@@ -0,0 +1,160 @@
+use std::sync::Arc;
+
+use crate::component::{
+    Broadcaster, Component, EventBridgeParent, EventBus, EventLoop, GameSynchronizer,
+    LocalConnection, PortsHandle, Submitter, WrappedClient, WrappedHandler,
+};
+use crate::frame::{EventFrame, SignalFrame};
+use race_api::error::{Error, Result};
+use race_api::types::{PlayerJoin, ServerJoin};
+use race_core::checkpoint::CheckpointOffChain;
+use race_core::context::GameContext;
+use race_core::storage::StorageT;
+use race_core::transport::TransportT;
+use race_core::types::{ClientMode, GameAccount, GameBundle, GameMode, ServerAccount};
+use race_encryptor::Encryptor;
+use tokio::sync::mpsc;
+use tracing::info;
+
+#[allow(dead_code)]
+pub struct TransactorHandle {
+    pub(crate) addr: String,
+    pub(crate) handles: Vec<PortsHandle>,
+    pub(crate) event_bus: EventBus,
+    pub(crate) broadcaster: Broadcaster,
+    pub(crate) bridge_parent: EventBridgeParent,
+}
+
+fn create_init_sync(game_account: &GameAccount) -> Result<EventFrame> {
+    let checkpoint_access_version = game_account
+        .checkpoint_on_chain
+        .as_ref()
+        .map(|cp| cp.access_version)
+        .unwrap_or_default();
+
+    let new_players: Vec<PlayerJoin> = game_account
+        .players
+        .iter()
+        .filter(|p| p.access_version > checkpoint_access_version)
+        .cloned()
+        .collect();
+
+    let new_servers: Vec<ServerJoin> = game_account
+        .servers
+        .iter()
+        .filter(|s| s.access_version > checkpoint_access_version)
+        .cloned()
+        .collect();
+
+    let transactor_addr = game_account
+        .transactor_addr
+        .clone()
+        .ok_or(Error::GameNotServed)?;
+
+    let init_sync = EventFrame::Sync {
+        access_version: game_account.access_version,
+        new_players,
+        new_servers,
+        transactor_addr,
+    };
+
+    Ok(init_sync)
+}
+
+impl TransactorHandle {
+    pub async fn try_new(
+        game_account: &GameAccount,
+        checkpoint_off_chain: Option<CheckpointOffChain>,
+        server_account: &ServerAccount,
+        bundle_account: &GameBundle,
+        encryptor: Arc<Encryptor>,
+        transport: Arc<dyn TransportT + Send + Sync>,
+        storage: Arc<dyn StorageT + Send + Sync>,
+        signal_tx: mpsc::Sender<SignalFrame>,
+        debug_mode: bool,
+    ) -> Result<Self> {
+        info!(
+            "Start game handle for {} with Transactor mode",
+            game_account.addr
+        );
+
+        let game_context = GameContext::try_new(game_account, checkpoint_off_chain)?;
+        let init_account = game_context.init_account()?;
+
+        let handler = WrappedHandler::load_by_bundle(bundle_account, encryptor.clone()).await?;
+
+        let event_bus = EventBus::new(game_account.addr.clone());
+
+        let (broadcaster, broadcaster_ctx) =
+            Broadcaster::init(game_account.addr.clone(), 0, debug_mode);
+        let mut broadcaster_handle = broadcaster.start(&game_account.addr, broadcaster_ctx);
+
+        let (bridge, bridge_ctx) = EventBridgeParent::init(signal_tx);
+        let mut bridge_handle = bridge.start(&game_account.addr, bridge_ctx);
+
+        let (event_loop, event_loop_ctx) = EventLoop::init(
+            handler,
+            game_context,
+            ClientMode::Transactor,
+            GameMode::Main,
+        );
+        let mut event_loop_handle = event_loop.start(&game_account.addr, event_loop_ctx);
+
+        let (submitter, submitter_ctx) =
+            Submitter::init(game_account, transport.clone(), storage.clone());
+        let mut submitter_handle = submitter.start(&game_account.addr, submitter_ctx);
+
+        let (synchronizer, synchronizer_ctx) =
+            GameSynchronizer::init(transport.clone(), game_account);
+
+        let mut connection = LocalConnection::new(encryptor.clone());
+
+        event_bus.attach(&mut connection).await;
+        let (client, client_ctx) = WrappedClient::init(
+            server_account.addr.clone(),
+            game_account.addr.clone(),
+            ClientMode::Transactor,
+            transport.clone(),
+            encryptor,
+            Arc::new(connection),
+        );
+        let mut client_handle = client.start(&game_account.addr, client_ctx);
+
+        event_bus.attach(&mut broadcaster_handle).await;
+        event_bus.attach(&mut bridge_handle).await;
+        event_bus.attach(&mut submitter_handle).await;
+        event_bus.attach(&mut event_loop_handle).await;
+        event_bus.attach(&mut client_handle).await;
+
+        // Dispatch init state
+        // let init_account = game_account.derive_checkpoint_init_account();
+        info!("InitAccount: {:?}", init_account);
+        event_bus
+            .send(EventFrame::InitState {
+                init_account,
+                access_version: game_account.access_version,
+                settle_version: game_account.settle_version,
+            })
+            .await;
+        let init_sync = create_init_sync(game_account)?;
+        info!("Dispatch init sync: {:?}", init_sync);
+        event_bus.send(init_sync).await;
+
+        let mut synchronizer_handle = synchronizer.start(&game_account.addr, synchronizer_ctx);
+        event_bus.attach(&mut synchronizer_handle).await;
+
+        Ok(Self {
+            addr: game_account.addr.clone(),
+            event_bus,
+            handles: vec![
+                broadcaster_handle,
+                submitter_handle,
+                event_loop_handle,
+                client_handle,
+                synchronizer_handle,
+            ],
+            broadcaster,
+            bridge_parent: bridge,
+        })
+    }
+}
diff --git a/transactor/src/handle/validator.rs b/transactor/src/handle/validator.rs
new file mode 100644
index 00000000..297d2f1e
--- /dev/null
+++ b/transactor/src/handle/validator.rs
@@ -0,0 +1,119 @@
+use std::sync::Arc;
+
+use crate::component::{
+    Component, EventBridgeParent, EventBus, EventLoop, PortsHandle, RemoteConnection, Subscriber,
+    Voter, WrappedClient, WrappedHandler, WrappedTransport,
+};
+use crate::frame::{EventFrame, SignalFrame};
+use race_api::error::{Error, Result};
+use race_core::checkpoint::CheckpointOffChain;
+use race_core::context::GameContext;
+use race_core::transport::TransportT;
+use race_core::types::{ClientMode, GameAccount, GameBundle, ServerAccount, GameMode};
+use race_encryptor::Encryptor;
+use tokio::sync::mpsc;
+use tracing::info;
+
+#[allow(dead_code)]
+pub struct ValidatorHandle {
+    pub(crate) addr: String,
+    pub(crate) event_bus: EventBus,
+    pub(crate) handles: Vec<PortsHandle>,
+    pub(crate) bridge_parent: EventBridgeParent,
+}
+
+impl ValidatorHandle {
+    pub async fn try_new(
+        game_account: &GameAccount,
+        checkpoint_off_chain: Option<CheckpointOffChain>,
+        server_account: &ServerAccount,
+        bundle_account: &GameBundle,
+        encryptor: Arc<Encryptor>,
+        transport: Arc<WrappedTransport>,
+        signal_tx: mpsc::Sender<SignalFrame>,
+        _debug_mode: bool,
+    ) -> Result<Self> {
+        info!(
+            "Start game handle for {} with Validator mode",
+            game_account.addr
+        );
+        let game_context = GameContext::try_new(game_account, checkpoint_off_chain)?;
+        let init_account = game_context.init_account()?;
+
+        let handler = WrappedHandler::load_by_bundle(bundle_account, encryptor.clone()).await?;
+
+        let transactor_addr = game_account
+            .transactor_addr
+            .as_ref()
+            .ok_or(Error::GameNotServed)?;
+        let transactor_account = transport
+            .get_server_account(transactor_addr)
+            .await?
+            .ok_or(Error::CantFindTransactor)?;
+
+        info!("Creating components");
+        let event_bus = EventBus::new(game_account.addr.clone());
+
+        let (bridge, bridge_ctx) = EventBridgeParent::init(signal_tx);
+        let mut bridge_handle = bridge.start(&game_account.addr, bridge_ctx);
+
+        let (event_loop, event_loop_ctx) =
+            EventLoop::init(handler, game_context, ClientMode::Validator, GameMode::Main);
+        let mut event_loop_handle = event_loop.start(&game_account.addr, event_loop_ctx);
+
+        let connection = Arc::new(
+            RemoteConnection::try_new(
+                &server_account.addr,
+                &transactor_account.endpoint,
+                encryptor.clone(),
+            )
+            .await?,
+        );
+        let (subscriber, subscriber_context) =
+            Subscriber::init(game_account, server_account, connection.clone());
+        let mut subscriber_handle = subscriber.start(&game_account.addr, subscriber_context);
+
+        let (client, client_ctx) = WrappedClient::init(
+            server_account.addr.clone(),
+            game_account.addr.clone(),
+            ClientMode::Validator,
+            transport.clone(),
+            encryptor,
+            connection,
+        );
+        let mut client_handle = client.start(&game_account.addr, client_ctx);
+
+        let (voter, voter_ctx) = Voter::init(game_account, server_account, transport.clone());
+        let mut voter_handle = voter.start(&game_account.addr, voter_ctx);
+
+        event_bus.attach(&mut bridge_handle).await;
+        event_bus.attach(&mut event_loop_handle).await;
+        event_bus.attach(&mut voter_handle).await;
+        event_bus.attach(&mut client_handle).await;
+
+        // let init_account = game_account.derive_checkpoint_init_account();
+        info!("InitAccount: {:?}", init_account);
+
+        // Dispatch init state
+        event_bus
+            .send(EventFrame::InitState {
+                init_account,
+                access_version: game_account.access_version,
+                settle_version: game_account.settle_version,
+            })
+            .await;
+
+        event_bus.attach(&mut subscriber_handle).await;
+        Ok(Self {
+            addr: game_account.addr.clone(),
+            event_bus,
+            handles: vec![
+                subscriber_handle,
+                client_handle,
+                event_loop_handle,
+                voter_handle,
+            ],
+            bridge_parent: bridge,
+        })
+    }
+}
diff --git a/transactor/src/main.rs b/transactor/src/main.rs
index b7839b03..60be85fb 100644
--- a/transactor/src/main.rs
+++ b/transactor/src/main.rs
@@ -13,6 +13,7 @@ use clap::{arg, Command};
 use context::ApplicationContext;
 use race_env::Config;
 use reg::{register_server, start_reg_task};
+use tracing_subscriber::{fmt, prelude::__tracing_subscriber_SubscriberExt, Layer, EnvFilter};
 
 fn cli() -> Command {
     Command::new("transactor")
@@ -24,13 +25,32 @@ fn cli() -> Command {
         .subcommand(Command::new("reg").about("Register server account"))
 }
 
+fn setup_logger() {
+    let logfile = tracing_appender::rolling::daily("logs", "transactor.log");
+    let file_layer = fmt::layer()
+        .with_writer(logfile)
+        .with_target(true)
+        .with_level(true)
+        .with_ansi(false)
+        .with_filter(EnvFilter::from_default_env());
+    let console_layer = fmt::layer()
+        .compact()
+        .with_writer(std::io::stdout)
+        .with_level(true)
+        .with_ansi(true)
+        .without_time()
+        .with_filter(EnvFilter::from_default_env());
+    let subscriber = tracing_subscriber::registry()
+        .with(console_layer)
+        .with(file_layer);
+
+    tracing::subscriber::set_global_default(subscriber).expect("Failed to configure logger");
+}
+
 #[tokio::main]
 pub async fn main() {
-    let log_format = tracing_subscriber::fmt::format()
-        .with_level(true)
-        .with_target(false)
-        .compact();
-    tracing_subscriber::fmt().event_format(log_format).init();
+
+    setup_logger();
 
     let matches = cli().get_matches();
     let config = Config::from_path(&matches.get_one::<String>("config").unwrap().into()).await;
diff --git a/transactor/src/server.rs b/transactor/src/server.rs
index 14b60dbd..991e6824 100644
--- a/transactor/src/server.rs
+++ b/transactor/src/server.rs
@@ -3,19 +3,20 @@ use std::{net::SocketAddr, sync::Arc};
 use crate::context::ApplicationContext;
 use crate::utils;
 use borsh::BorshDeserialize;
-use borsh::BorshSerialize;
 use hyper::Method;
 use jsonrpsee::core::error::Error as RpcError;
-use jsonrpsee::core::error::SubscriptionClosed;
+use jsonrpsee::core::StringError;
 use jsonrpsee::server::AllowHosts;
 use jsonrpsee::types::error::CallError;
-use jsonrpsee::types::SubscriptionEmptyError;
-use jsonrpsee::SubscriptionSink;
+use jsonrpsee::types::ErrorObjectOwned;
 use jsonrpsee::{server::ServerBuilder, types::Params, RpcModule};
+use jsonrpsee::{PendingSubscriptionSink, SubscriptionMessage, TrySendError};
 use race_api::event::Message;
+use race_core::checkpoint::CheckpointOffChain;
 use race_core::types::SubmitMessageParams;
 use race_core::types::{
-    AttachGameParams, ExitGameParams, Signature, SubmitEventParams, SubscribeEventParams,
+    AttachGameParams, CheckpointParams, ExitGameParams, Signature, SubmitEventParams,
+    SubscribeEventParams,
 };
 use tokio_stream::wrappers::BroadcastStream;
 use tokio_stream::StreamExt;
@@ -60,15 +61,24 @@ fn parse_params<T: BorshDeserialize>(
 }
 
 /// Ask transactor to load game and provide client's public key for further encryption.
-async fn attach_game(params: Params<'_>, context: Arc<ApplicationContext>) -> Result<(), RpcError> {
-    let (_game_addr, AttachGameParams { signer, key }) = parse_params_no_sig(params)?;
+async fn attach_game(
+    params: Params<'_>,
+    context: Arc<ApplicationContext>,
+) -> Result<(), RpcError> {
+    let (game_addr, AttachGameParams { signer, key }) = parse_params_no_sig(params)?;
 
     info!("Attach to game, signer: {}", signer);
 
+    if !context.game_manager.is_game_loaded(&game_addr).await {
+        return Err(RpcError::Custom("Game not loaded".to_string()));
+    }
+
     context
         .register_key(signer, key)
         .await
-        .map_err(|e| RpcError::Call(CallError::Failed(e.into())))
+        .map_err(|e| RpcError::Call(CallError::Failed(e.into())))?;
+
+    Ok(())
 }
 
 fn ping(_: Params<'_>, _: &ApplicationContext) -> Result<String, RpcError> {
@@ -82,6 +92,7 @@ async fn submit_message(
     let (game_addr, SubmitMessageParams { content }, sig) = parse_params(params, &context)?;
 
     let sender = sig.signer;
+    info!("Player message, {}: {}", sender, content);
     let message = Message { content, sender };
 
     context
@@ -104,6 +115,27 @@ async fn submit_event(
         .map_err(|e| RpcError::Call(CallError::Failed(e.into())))
 }
 
+async fn get_checkpoint(
+    params: Params<'_>,
+    context: Arc<ApplicationContext>,
+) -> Result<Option<Vec<u8>>, RpcError> {
+    let (game_addr, CheckpointParams { settle_version }) = parse_params_no_sig(params)?;
+
+    info!("Get checkpoint, game_addr: {}", game_addr);
+
+    let checkpoint: Option<CheckpointOffChain> = context
+        .game_manager
+        .get_checkpoint(&game_addr, settle_version)
+        .await
+        .map_err(|e| RpcError::Call(CallError::Failed(e.into())))?;
+
+    let bs = checkpoint
+        .map(|c| borsh::to_vec(&c).map_err(|e| RpcError::Call(CallError::Failed(e.into()))))
+        .transpose()?;
+
+    Ok(bs)
+}
+
 async fn exit_game(params: Params<'_>, context: Arc<ApplicationContext>) -> Result<(), RpcError> {
     let (game_addr, ExitGameParams {}, sig) = parse_params(params, &context)?;
     info!("Exit game");
@@ -114,72 +146,81 @@ async fn exit_game(params: Params<'_>, context: Arc<ApplicationContext>) -> Resu
         .map_err(|e| RpcError::Call(CallError::Failed(e.into())))
 }
 
-fn subscribe_event(
+async fn subscribe_event(
     params: Params<'_>,
-    mut sink: SubscriptionSink,
+    pending: PendingSubscriptionSink,
     context: Arc<ApplicationContext>,
-) -> Result<(), SubscriptionEmptyError> {
+) -> Result<(), StringError> {
     {
-        let (game_addr, SubscribeEventParams { settle_version }) =
-            parse_params_no_sig(params).or(Err(SubscriptionEmptyError))?;
-
-        tokio::spawn(async move {
-            let (receiver, histories) =
-                match context.get_broadcast(&game_addr, settle_version).await {
-                    Ok(x) => x,
-                    Err(e) => {
-                        sink.close(SubscriptionClosed::Failed(
-                            CallError::Failed(e.into()).into(),
-                        ));
-                        return;
-                    }
-                };
-
-            drop(context);
-
-            info!(
-                "Subscribe event stream, game: {:?}, settle version: {}, number of histories: {}",
-                game_addr,
-                settle_version,
-                histories.len()
-            );
-            histories.into_iter().for_each(|x| {
-                // info!("Push history event: {}", x);
-                let v = x.try_to_vec().unwrap();
+        let (game_addr, SubscribeEventParams { settle_version }) = match parse_params_no_sig(params)
+        {
+            Ok(p) => p,
+            Err(e) => {
+                let _ = pending.reject(ErrorObjectOwned::from(e)).await;
+                return Ok(());
+            }
+        };
+
+        let (receiver, frames) = match context.get_broadcast(&game_addr, settle_version).await {
+            Ok(x) => x,
+            Err(e) => {
+                warn!("Game not found: {}", game_addr);
+                let _ = pending.reject(CallError::Failed(e.into())).await;
+                return Ok(());
+            }
+        };
+
+        drop(context);
+        info!(
+            "Subscribe event stream, game: {:?}, settle version: {}, number of historical frames: {}",
+            game_addr,
+            settle_version,
+            frames.len()
+        );
+
+        let mut sink = pending.accept().await?;
+
+        for frame in frames.into_iter() {
+            let v = borsh::to_vec(&frame).unwrap();
+            let s = utils::base64_encode(&v);
+            sink.send(SubscriptionMessage::from(&s))
+                .await
+                .map_err(|e| {
+                    error!("Error occurred when broadcasting historical frame: {:?}", e);
+                    e
+                })
+                .unwrap();
+        }
+
+        let rx = BroadcastStream::new(receiver);
+        let mut serialized_rx = rx.map(|f| match f {
+            Ok(x) => {
+                let v = borsh::to_vec(&x).unwrap();
                 let s = utils::base64_encode(&v);
-                sink.send(&s)
-                    .map_err(|e| {
-                        error!("Error occurred when broadcasting event histories: {:?}", e);
-                        e
-                    })
-                    .unwrap();
-            });
-
-            let rx = BroadcastStream::new(receiver);
-            let serialized_rx = rx.map(|f| match f {
-                Ok(x) => {
-                    let v = x.try_to_vec().unwrap();
-                    let s = utils::base64_encode(&v);
-                    // info!("Push new event: {}", x);
-                    Ok(s)
-                }
-                Err(e) => Err(e),
-            });
-
-            match sink.pipe_from_try_stream(serialized_rx).await {
-                SubscriptionClosed::Success => {
-                    info!("Subscription closed successfully");
-                    sink.close(SubscriptionClosed::Success);
-                }
-                SubscriptionClosed::RemotePeerAborted => {
-                    warn!("Remote peer aborted");
-                }
-                SubscriptionClosed::Failed(err) => {
-                    warn!("Subscription error: {:?}", err);
-                    sink.close(err);
-                }
-            };
+                Ok(s)
+            }
+            Err(e) => Err(e),
         });
+
+        loop {
+            tokio::select! {
+                _ = sink.closed() => break Err(anyhow::anyhow!("Subscription was closed")),
+                maybe_item = serialized_rx.next() => {
+                    let item = match maybe_item {
+                        Some(Ok(item)) => item,
+                        _ => break Err(anyhow::anyhow!("Event stream ended")),
+                    };
+                    let msg = SubscriptionMessage::from(&item);
+                    match sink.try_send(msg) {
+                        Ok(_) => (),
+                        Err(TrySendError::Closed(_)) => break Err(anyhow::anyhow!("Client disconnected, subscription closed")),
+                        Err(TrySendError::Full(_)) => {
+                            warn!("TrySendError::Full");
+                        }
+                    }
+                },
+            }
+        }?;
         Ok(())
     }
 }
@@ -206,6 +247,7 @@ pub async fn run_server(context: ApplicationContext) -> anyhow::Result<()> {
     let mut module = RpcModule::new(context);
 
     module.register_method("ping", ping)?;
+    module.register_async_method("checkpoint", get_checkpoint)?;
     module.register_async_method("attach_game", attach_game)?;
     module.register_async_method("submit_event", submit_event)?;
     module.register_async_method("submit_message", submit_message)?;
diff --git a/transactor/src/utils.rs b/transactor/src/utils.rs
index 141946a9..733c8936 100644
--- a/transactor/src/utils.rs
+++ b/transactor/src/utils.rs
@@ -1,4 +1,5 @@
 use base64::Engine;
+use std::time::UNIX_EPOCH;
 
 pub fn base64_encode(data: &[u8]) -> String {
     let engine = base64::engine::general_purpose::STANDARD;
@@ -13,5 +14,17 @@ pub fn base64_decode(data: &str) -> Result<Vec<u8>, race_api::error::Error> {
 }
 
 pub fn addr_shorthand(addr: &str) -> String {
-    format!("[{}]", &addr[0..3])
+    if addr.len() > 6 {
+        let l = addr.len();
+        addr[(l - 6)..l].to_string()
+    } else {
+        addr.to_string()
+    }
+}
+
+pub fn current_timestamp() -> u64 {
+    std::time::SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap()
+        .as_millis() as u64
 }
diff --git a/transport/Cargo.toml b/transport/Cargo.toml
index 3855a2aa..0a78f475 100644
--- a/transport/Cargo.toml
+++ b/transport/Cargo.toml
@@ -16,20 +16,24 @@ publish = true
 [dependencies]
 race-api = { workspace = true, features = ["serde"] }
 race-core = { workspace = true, features = ["serde"] }
-race-env = { workspace = true }
-async-trait = { workspace = true }
-thiserror = { workspace = true }
-serde_json = { workspace = true }
-serde = { workspace = true }
-tracing = { workspace = true }
-borsh = { workspace = true }
+race-env.workspace = true
+async-trait.workspace = true
+thiserror.workspace = true
+serde_json.workspace = true
+serde.workspace = true
+tracing.workspace = true
+borsh.workspace = true
 jsonrpsee = { workspace = true, features = ["http-client"]}
-solana-client = { workspace = true }
-solana-sdk = { workspace = true }
-spl-token = { workspace = true }
-spl-associated-token-account = { workspace = true }
+async-stream.workspace = true
+futures.workspace = true
+solana-account-decoder.workspace = true
+solana-rpc-client.workspace = true
+solana-rpc-client-api.workspace = true
+solana-pubsub-client.workspace = true
+solana-sdk.workspace = true
+spl-token.workspace = true
+spl-associated-token-account.workspace = true
 reqwest = { workspace = true, features = [ "json"] }
-mpl-token-metadata = { workspace = true }
 
 [dev-dependencies]
 anyhow = { workspace = true }
diff --git a/transport/src/error.rs b/transport/src/error.rs
index 14375520..ee743c57 100644
--- a/transport/src/error.rs
+++ b/transport/src/error.rs
@@ -143,9 +143,14 @@ pub enum TransportError {
     #[error("Metadta Symbole too long (no more than 10 letters)")]
     InvalidMetadataSymbolLength,
 
-    #[error("Invalid settle address")]
-    InvalidSettleAddress,
+    #[error("Invalid settle address: {0}")]
+    InvalidSettleAddress(String),
 
+    #[error("Fee calculation error: {0}")]
+    FeeCalculationError(String),
+
+    #[error("Subscription error: {0}")]
+    SubscriptionError(String),
 }
 
 pub type TransportResult<T> = std::result::Result<T, TransportError>;
diff --git a/transport/src/evm.rs b/transport/src/evm.rs
index 8b96174a..a80dd433 100644
--- a/transport/src/evm.rs
+++ b/transport/src/evm.rs
@@ -1,5 +1,3 @@
-// use web3::{transports::Http, Web3};
-
 use race_core::{
     error::Result,
     transport::TransportT,
diff --git a/transport/src/facade.rs b/transport/src/facade.rs
index f017f2c5..90199b30 100644
--- a/transport/src/facade.rs
+++ b/transport/src/facade.rs
@@ -1,6 +1,11 @@
+use std::pin::Pin;
+
+use async_stream::stream;
 use async_trait::async_trait;
 use borsh::BorshDeserialize;
+use futures::Stream;
 use jsonrpsee::core::client::ClientT;
+use jsonrpsee::http_client::transport::HttpBackend;
 use jsonrpsee::rpc_params;
 
 use jsonrpsee::http_client::{HttpClient as Client, HttpClientBuilder as ClientBuilder};
@@ -10,10 +15,12 @@ use race_api::error::{Error, Result};
 use race_core::transport::TransportT;
 
 use race_core::types::{
-    CloseGameAccountParams, CreateGameAccountParams, CreatePlayerProfileParams,
-    CreateRegistrationParams, DepositParams, GameAccount, GameBundle, JoinParams, PlayerProfile,
-    PublishGameParams, RegisterGameParams, RegisterServerParams, RegistrationAccount, ServeParams,
-    ServerAccount, SettleParams, UnregisterGameParams, VoteParams, CreateRecipientParams, AssignRecipientParams, RecipientAccount,QueryMode, RecipientClaimParams
+    AssignRecipientParams, CloseGameAccountParams, CreateGameAccountParams,
+    CreatePlayerProfileParams, CreateRecipientParams, CreateRegistrationParams, DepositParams,
+    GameAccount, GameBundle, JoinParams, PlayerProfile, PublishGameParams, QueryMode,
+    RecipientAccount, RecipientClaimParams, RegisterGameParams, RegisterServerParams,
+    RegistrationAccount, ServeParams, ServerAccount, SettleParams, UnregisterGameParams,
+    VoteParams,
 };
 use serde::Serialize;
 
@@ -36,15 +43,16 @@ pub struct RegisterServerInstruction {
 
 pub struct FacadeTransport {
     addr: String,
-    client: Client,
+    client: Client<HttpBackend>,
 }
 
 impl FacadeTransport {
     pub async fn try_new(addr: String, url: &str) -> TransportResult<Self> {
         let client = ClientBuilder::default()
-            .max_request_body_size(64_000_000)
+            .max_request_size(64_000_000)
             .build(url)
             .map_err(|e| TransportError::InitializationFailed(e.to_string()))?;
+
         Ok(Self { addr, client })
     }
 
@@ -128,10 +136,32 @@ impl TransportT for FacadeTransport {
         }
     }
 
+    async fn subscribe_game_account<'a>(
+        &'a self,
+        addr: &'a str,
+    ) -> Result<Pin<Box<dyn Stream<Item = Option<GameAccount>> + Send + 'a>>> {
+        Ok(Box::pin(stream! {
+            let mut access_version = 0;
+            loop {
+                match self.fetch::<GameAccount>("get_account_info", addr).await {
+                    Ok(game_account_opt) => {
+                        if let Some(game_account) = game_account_opt {
+                            if game_account.access_version > access_version {
+                                access_version = game_account.access_version;
+                                yield Some(game_account);
+                            }
+                        }
+                    }
+                    Err(e) => yield None,
+                }
+            }
+        }))
+    }
+
     async fn get_game_account(&self, addr: &str, mode: QueryMode) -> Result<Option<GameAccount>> {
         match mode {
-            QueryMode::Confirming => {},
-            QueryMode::Finalized => {},
+            QueryMode::Confirming => {}
+            QueryMode::Finalized => {}
         }
         self.fetch("get_account_info", addr).await
     }
@@ -164,7 +194,7 @@ impl TransportT for FacadeTransport {
         unimplemented!()
     }
 
-    async fn settle_game(&self, params: SettleParams) -> Result<()> {
+    async fn settle_game(&self, params: SettleParams) -> Result<String> {
         self.client
             .request("settle", rpc_params![params])
             .await
diff --git a/transport/src/solana.rs b/transport/src/solana.rs
index d1ae9d50..1369c305 100755
--- a/transport/src/solana.rs
+++ b/transport/src/solana.rs
@@ -1,7 +1,10 @@
 mod constants;
+mod metadata;
 mod types;
 
+use async_stream::stream;
 use constants::*;
+use futures::{Stream, StreamExt};
 use tracing::{error, info};
 use types::*;
 
@@ -22,12 +25,12 @@ use race_core::{
 };
 
 // use core::slice::SlicePattern;
-use std::path::PathBuf;
 use std::str::FromStr;
+use std::{path::PathBuf, pin::Pin};
 
-use mpl_token_metadata as metaplex_program;
-use mpl_token_metadata::state::Metadata;
-use solana_client::{rpc_client::RpcClient, rpc_config::RpcSendTransactionConfig};
+use solana_pubsub_client::nonblocking::pubsub_client::PubsubClient;
+use solana_rpc_client::rpc_client::RpcClient;
+use solana_rpc_client_api::config::{RpcAccountInfoConfig, RpcSendTransactionConfig};
 use solana_sdk::compute_budget::ComputeBudgetInstruction;
 use solana_sdk::pubkey::Pubkey;
 use solana_sdk::signature::Keypair;
@@ -44,6 +47,7 @@ use solana_sdk::{
     system_program,
     sysvar::rent,
 };
+use solana_account_decoder::UiAccountEncoding;
 use spl_associated_token_account::{
     get_associated_token_address, instruction::create_associated_token_account,
 };
@@ -55,6 +59,8 @@ use spl_token::{
 
 mod nft;
 
+const METAPLEX_PROGRAM_ID: &str = "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s";
+
 fn read_keypair(path: PathBuf) -> TransportResult<Keypair> {
     let keypair = solana_sdk::signature::read_keypair_file(path)
         .map_err(|e| TransportError::InvalidKeyfile(e.to_string()))?;
@@ -66,11 +72,12 @@ fn player_addr_to_postition(game_state: &GameState, addr: &Pubkey) -> Result<u16
         .players
         .iter()
         .find(|p| p.addr.eq(addr))
-        .ok_or(TransportError::InvalidSettleAddress)?
+        .ok_or(TransportError::InvalidSettleAddress(addr.to_string()))?
         .position)
 }
 
 pub struct SolanaTransport {
+    rpc: String,
     program_id: Pubkey,
     client: RpcClient,
     keypair: Keypair,
@@ -137,8 +144,13 @@ impl TransportT for SolanaTransport {
             ],
         );
 
+        let fee =
+            self.get_recent_prioritization_fees(&[game_account_pubkey, stake_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
         let message = Message::new(
             &[
+                set_cu_prize_ix,
                 create_game_account_ix,
                 create_stake_account_ix,
                 init_stake_account_ix,
@@ -167,19 +179,26 @@ impl TransportT for SolanaTransport {
         let (pda, _bump_seed) =
             Pubkey::find_program_address(&[&game_account_pubkey.to_bytes()], &self.program_id);
 
+        let ata_account_pubkey = get_associated_token_address(&game_account_pubkey, &game_state.token_mint);
+
         let close_game_ix = Instruction::new_with_borsh(
             self.program_id,
             &RaceInstruction::CloseGameAccount,
             vec![
-                AccountMeta::new(payer_pubkey, true),
+                AccountMeta::new(payer_pubkey, false),
                 AccountMeta::new(game_account_pubkey, false),
                 AccountMeta::new(stake_account_pubkey, false),
                 AccountMeta::new_readonly(pda, false),
+                AccountMeta::new_readonly(ata_account_pubkey, false),
                 AccountMeta::new_readonly(spl_token::id(), false),
             ],
         );
 
-        let message = Message::new(&[close_game_ix], Some(&payer.pubkey()));
+        let fee =
+            self.get_recent_prioritization_fees(&[game_account_pubkey, stake_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
+        let message = Message::new(&[set_cu_prize_ix, close_game_ix], Some(&payer.pubkey()));
         let mut tx = Transaction::new_unsigned(message);
         let blockhash = self.get_blockhash()?;
         tx.sign(&[payer], blockhash);
@@ -199,13 +218,6 @@ impl TransportT for SolanaTransport {
                 .map_err(|_| TransportError::AddressCreationFailed)?;
         let lamports = self.get_min_lamports(SERVER_ACCOUNT_LEN)?;
 
-        // match self.client.get_account(&server_account_pubkey) {
-        //     Ok(_) => {
-        //         return Err(TransportError::DuplicateServerAccount)?;
-        //     }
-        //     _ => {}
-        // }
-
         let get_server_account_ix = create_account_with_seed(
             &payer_pubkey,
             &server_account_pubkey,
@@ -227,8 +239,11 @@ impl TransportT for SolanaTransport {
             ],
         );
 
+        let fee = self.get_recent_prioritization_fees(&[server_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
         let message = Message::new(
-            &[get_server_account_ix, init_or_update_ix],
+            &[set_cu_prize_ix, get_server_account_ix, init_or_update_ix],
             Some(&payer_pubkey),
         );
 
@@ -360,7 +375,10 @@ impl TransportT for SolanaTransport {
             ],
         );
 
-        let message = Message::new(&[serve_game_ix], Some(&payer_pubkey));
+        let fee = self.get_recent_prioritization_fees(&[game_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
+        let message = Message::new(&[set_cu_prize_ix, serve_game_ix], Some(&payer_pubkey));
         let mut tx = Transaction::new_unsigned(message);
         let blockhash = self.get_blockhash()?;
         tx.sign(&[payer], blockhash);
@@ -422,6 +440,10 @@ impl TransportT for SolanaTransport {
 
         ixs.push(init_profile_ix);
 
+        let fee = self.get_recent_prioritization_fees(&[profile_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+        ixs.insert(0, set_cu_prize_ix);
+
         let message = Message::new(&ixs, Some(&payer_pubkey));
 
         let mut tx = Transaction::new_unsigned(message);
@@ -434,6 +456,8 @@ impl TransportT for SolanaTransport {
     // TODO: add close_player_profile
 
     async fn publish_game(&self, params: PublishGameParams) -> Result<String> {
+        let metaplex_program_id = Pubkey::from_str(METAPLEX_PROGRAM_ID).unwrap();
+
         if params.name.len() > MAX_NAME_LENGTH {
             return Err(TransportError::InvalidMetadataNameLength)?;
         }
@@ -468,20 +492,20 @@ impl TransportT for SolanaTransport {
         let (metadata_pda, _bump_seed) = Pubkey::find_program_address(
             &[
                 "metadata".as_bytes(),
-                metaplex_program::id().as_ref(),
+                metaplex_program_id.as_ref(),
                 mint_pubkey.as_ref(),
             ],
-            &metaplex_program::id(),
+            &metaplex_program_id,
         );
 
         let (edition_pda, _bump_seed) = Pubkey::find_program_address(
             &[
                 "metadata".as_bytes(),
-                metaplex_program::id().as_ref(),
+                metaplex_program_id.as_ref(),
                 mint_pubkey.as_ref(),
                 "edition".as_bytes(),
             ],
-            &metaplex_program::id(),
+            &metaplex_program_id,
         );
 
         let ata_pubkey = get_associated_token_address(&payer_pubkey, &mint_pubkey);
@@ -499,7 +523,7 @@ impl TransportT for SolanaTransport {
             AccountMeta::new(metadata_pda, false),
             AccountMeta::new(edition_pda, false),
             AccountMeta::new_readonly(spl_token::id(), false),
-            AccountMeta::new_readonly(metaplex_program::id(), false),
+            AccountMeta::new_readonly(metaplex_program_id, false),
             AccountMeta::new_readonly(rent::id(), false),
             AccountMeta::new_readonly(system_program::id(), false),
         ];
@@ -512,8 +536,12 @@ impl TransportT for SolanaTransport {
             accounts,
         );
 
+        let fee = self.get_recent_prioritization_fees(&[mint_pubkey, metadata_pda, edition_pda])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
         let message = Message::new(
             &[
+                set_cu_prize_ix,
                 create_mint_account_ix,
                 init_mint_ix,
                 create_ata_account_ix,
@@ -530,7 +558,7 @@ impl TransportT for SolanaTransport {
         Ok(mint_pubkey.to_string())
     }
 
-    async fn settle_game(&self, params: SettleParams) -> Result<()> {
+    async fn settle_game(&self, params: SettleParams) -> Result<String> {
         let SettleParams {
             addr,
             mut settles,
@@ -539,6 +567,7 @@ impl TransportT for SolanaTransport {
             settle_version,
             next_settle_version,
         } = params;
+
         let payer = &self.keypair;
         let payer_pubkey = payer.pubkey();
         let game_account_pubkey = Self::parse_pubkey(&addr)?;
@@ -582,12 +611,16 @@ impl TransportT for SolanaTransport {
         ];
 
         let mut ix_settles: Vec<IxSettle> = Vec::new();
+        let mut calc_cu_prize_addrs =
+            vec![Pubkey::from_str(&addr).unwrap(), game_state.stake_account];
+
         for settle in settles.iter() {
             match &settle.op {
                 &SettleOp::Eject => {
                     let addr = parse_pubkey(&settle.addr)?;
                     let ata = get_associated_token_address(&addr, &game_state.token_mint);
                     accounts.push(AccountMeta::new(ata, false));
+                    calc_cu_prize_addrs.push(ata);
                     let position = player_addr_to_postition(&game_state, &addr)?;
                     ix_settles.push(IxSettle {
                         position,
@@ -611,6 +644,7 @@ impl TransportT for SolanaTransport {
         for Transfer { slot_id, .. } in transfers.iter() {
             if let Some(slot) = recipient_state.slots.iter().find(|s| s.id == *slot_id) {
                 accounts.push(AccountMeta::new(slot.stake_addr, false));
+                calc_cu_prize_addrs.push(slot.stake_addr);
             }
         }
 
@@ -627,23 +661,27 @@ impl TransportT for SolanaTransport {
             params: IxSettleParams {
                 settles: ix_settles,
                 transfers,
-                checkpoint,
+                checkpoint: borsh::to_vec(&checkpoint)?,
                 settle_version,
                 next_settle_version,
             },
         };
 
         let set_cu_limit_ix = ComputeBudgetInstruction::set_compute_unit_limit(1200000);
+        let fee = self.get_recent_prioritization_fees(&calc_cu_prize_addrs)?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
 
         let settle_ix = Instruction::new_with_borsh(self.program_id, &params, accounts);
 
-        let message = Message::new(&[set_cu_limit_ix, settle_ix], Some(&payer.pubkey()));
+        let message = Message::new(
+            &[set_cu_prize_ix, set_cu_limit_ix, settle_ix],
+            Some(&payer.pubkey()),
+        );
         let mut tx = Transaction::new_unsigned(message);
         let blockhash = self.get_blockhash()?;
         tx.sign(&[payer], blockhash);
-        self.send_transaction(tx)?;
-
-        Ok(())
+        let sig = self.send_transaction(tx)?;
+        Ok(sig.to_string())
     }
 
     async fn create_registration(&self, params: CreateRegistrationParams) -> Result<String> {
@@ -670,8 +708,11 @@ impl TransportT for SolanaTransport {
             ],
         );
 
+        let fee = self.get_recent_prioritization_fees(&[registry_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
         let message = Message::new(
-            &[create_account_ix, create_registry_ix],
+            &[set_cu_prize_ix, create_account_ix, create_registry_ix],
             Some(&payer.pubkey()),
         );
         let blockhash = self.get_blockhash()?;
@@ -827,7 +868,10 @@ impl TransportT for SolanaTransport {
             accounts,
         );
 
-        let message = Message::new(&[register_game_ix], Some(&payer.pubkey()));
+        let fee = self.get_recent_prioritization_fees(&[reg_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
+        let message = Message::new(&[set_cu_prize_ix, register_game_ix], Some(&payer.pubkey()));
         let mut tx = Transaction::new_unsigned(message);
         let blockhash = self.get_blockhash()?;
         tx.sign(&[payer], blockhash);
@@ -855,7 +899,13 @@ impl TransportT for SolanaTransport {
             accounts,
         );
 
-        let message = Message::new(&[unregister_game_ix], Some(&payer.pubkey()));
+        let fee = self.get_recent_prioritization_fees(&[reg_account_pubkey])?;
+        let set_cu_prize_ix = ComputeBudgetInstruction::set_compute_unit_price(fee);
+
+        let message = Message::new(
+            &[set_cu_prize_ix, unregister_game_ix],
+            Some(&payer.pubkey()),
+        );
         let mut tx = Transaction::new_unsigned(message);
         let blockhash = self
             .client
@@ -867,26 +917,101 @@ impl TransportT for SolanaTransport {
         Ok(())
     }
 
+    async fn subscribe_game_account<'a>(
+        &'a self,
+        addr: &'a str,
+    ) -> Result<Pin<Box<dyn Stream<Item = Option<GameAccount>> + Send + 'a>>> {
+        let ws_rpc = self
+            .rpc
+            .replace("https://", "wss://")
+            .replace("http://", "ws://");
+        let game_account_pubkey = Self::parse_pubkey(addr)?;
+        let addr = addr.to_owned();
+
+        Ok(Box::pin(stream! {
+
+            let Ok(client) = PubsubClient::new(&ws_rpc).await else {
+                error!("Failed to create PubsubClient");
+                return;
+            };
+
+            let Ok((mut stream, unsub)) = client
+                .account_subscribe(
+                    &game_account_pubkey,
+                    Some(RpcAccountInfoConfig {
+                        encoding: Some(UiAccountEncoding::Base64),
+                        data_slice: None,
+                        commitment: Some(CommitmentConfig::finalized()),
+                        min_context_slot: None,
+                    }),
+                ).await else {
+                    error!("Failed on calling account_subscribe");
+                    return;
+                };
+
+            while let Some(rpc_response) = stream.next().await {
+                let ui_account = rpc_response.value;
+                let Some(data) = ui_account.data.decode() else {
+                    error!("Found an empty account data");
+                    return;
+                };
+                let state = match GameState::deserialize(&mut data.as_slice()) {
+                    Ok(x) => x,
+                    Err(e) => {
+                        error!("Game state deserialization error: {}", e.to_string());
+                        unsub().await;
+                        yield None;
+                        break;
+                    }
+                };
+                let acc = match state.into_account(addr.clone()) {
+                    Ok(x) => x,
+                    Err(e) => {
+                        error!("Game account parsing error: {}", e.to_string());
+                        unsub().await;
+                        yield None;
+                        break;
+                    }
+                };
+                yield Some(acc);
+            }
+            yield None;
+        }))
+    }
+
     async fn get_game_account(&self, addr: &str, mode: QueryMode) -> Result<Option<GameAccount>> {
         let game_account_pubkey = Self::parse_pubkey(addr)?;
         let game_state = self
             .internal_get_game_state(&game_account_pubkey, mode)
             .await?;
-        Ok(Some(game_state.into_account(addr)))
+        Ok(Some(game_state.into_account(addr)?))
     }
 
     async fn get_game_bundle(&self, addr: &str) -> Result<Option<GameBundle>> {
         let mint_pubkey = Self::parse_pubkey(addr)?;
+        let metaplex_program_id = Pubkey::from_str(METAPLEX_PROGRAM_ID).unwrap();
 
-        let (metadata_account_pubkey, _) =
-            metaplex_program::pda::find_metadata_account(&mint_pubkey);
+        let (metadata_account_pubkey, _) = Pubkey::find_program_address(
+            &[
+                b"metadata",
+                metaplex_program_id.as_ref(),
+                mint_pubkey.as_ref(),
+            ],
+            &metaplex_program_id,
+        );
 
         let metadata_account_data = self
             .client
             .get_account_data(&metadata_account_pubkey)
             .map_err(|e| TransportError::NetworkError(e.to_string()))?;
-        let metadata_account_state = Metadata::deserialize(&mut metadata_account_data.as_slice())
-            .map_err(|_| TransportError::MetadataDeserializeError)?;
+        let metadata_account_state =
+            match metadata::Metadata::deserialize(&mut metadata_account_data.as_slice()) {
+                Ok(x) => x,
+                Err(e) => {
+                    error!("Failed to deserialize metadata account: {:?}", e);
+                    return Err(TransportError::MetadataDeserializeError)?;
+                }
+            };
         let metadata_data = metadata_account_state.data;
         let uri = metadata_data.uri.trim_end_matches('\0').to_string();
 
@@ -930,7 +1055,7 @@ impl TransportT for SolanaTransport {
         // Add amount information by querying stake accounts
         for (i, stake_addr) in stake_addrs.iter().enumerate() {
             tracing::info!("Check stake account: {}", stake_addr);
-            let mut slot = recipient_account
+            let slot = recipient_account
                 .slots
                 .get_mut(i)
                 .ok_or(Error::TransportError(
@@ -1055,8 +1180,9 @@ impl SolanaTransport {
             CommitmentConfig::finalized()
         };
         let debug = skip_preflight;
-        let client = RpcClient::new_with_commitment(rpc, commitment);
+        let client = RpcClient::new_with_commitment(rpc.clone(), commitment);
         Ok(Self {
+            rpc,
             client,
             keypair,
             program_id,
@@ -1069,6 +1195,22 @@ impl SolanaTransport {
             .map_err(|_| TransportError::InvalidConfig(format!("Can't parse public key: {}", addr)))
     }
 
+    fn get_recent_prioritization_fees(&self, pubkeys: &[Pubkey]) -> TransportResult<u64> {
+        let fees = self
+            .client
+            .get_recent_prioritization_fees(pubkeys)
+            .map_err(|e| TransportError::FeeCalculationError(e.to_string()))?;
+        let mut fee = 0;
+        for f in fees {
+            if f.prioritization_fee > fee {
+                fee = f.prioritization_fee;
+            }
+        }
+        println!("Estimate fee: {}", fee);
+        // XXX: We add a fixed amount to recommended fee
+        Ok(fee + 50)
+    }
+
     fn get_min_lamports(&self, account_len: usize) -> TransportResult<u64> {
         self.client
             .get_minimum_balance_for_rent_exemption(account_len)
diff --git a/transport/src/solana/metadata.rs b/transport/src/solana/metadata.rs
new file mode 100644
index 00000000..60734f03
--- /dev/null
+++ b/transport/src/solana/metadata.rs
@@ -0,0 +1,94 @@
+use borsh::{BorshDeserialize, BorshSerialize};
+use solana_sdk::pubkey::Pubkey;
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub enum Key {
+    Uninitialized,
+    EditionV1,
+    MasterEditionV1,
+    ReservationListV1,
+    MetadataV1,
+    ReservationListV2,
+    MasterEditionV2,
+    EditionMarker,
+    UseAuthorityRecord,
+    CollectionAuthorityRecord,
+    TokenOwnedEscrow,
+    TokenRecord,
+    MetadataDelegate,
+    EditionMarkerV2,
+    HolderDelegate,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub struct Creator {
+    pub address: Pubkey,
+    pub verified: bool,
+    pub share: u8,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub struct Data {
+    pub name: String,
+    pub symbol: String,
+    pub uri: String,
+    pub seller_fee_basis_points: u16,
+    pub creators: Option<Vec<Creator>>,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub enum TokenStandard {
+    NonFungible,
+    FungibleAsset,
+    Fungible,
+    NonFungibleEdition,
+    ProgrammableNonFungible,
+    ProgrammableNonFunibleEdition,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub struct Collection {
+    pub verified: bool,
+    pub key: Pubkey,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub enum UseMethod {
+    Burn,
+    Multiple,
+    Single,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub struct Uses {
+    pub use_method: UseMethod,
+    pub remaining: u64,
+    pub total: u64,
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub enum CollectionDetails {
+    V1 { size: u64 },
+    V2 { padding: [u8; 8] },
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub enum ProgrammableConfig {
+    V1 { rule_set: Option<Pubkey> },
+}
+
+#[derive(BorshDeserialize, BorshSerialize)]
+pub struct Metadata {
+    pub key: Key,
+    pub update_authority: Pubkey,
+    pub mint: Pubkey,
+    pub data: Data,
+    pub primary_sale_happened: bool,
+    pub is_mutable: bool,
+    pub edition_nonce: Option<u8>,
+    pub token_standard: Option<TokenStandard>,
+    pub collection: Option<Collection>,
+    pub uses: Option<Uses>,
+    pub collection_details: Option<CollectionDetails>,
+    pub programmable_config: Option<ProgrammableConfig>,
+}
diff --git a/transport/src/solana/types/state/game.rs b/transport/src/solana/types/state/game.rs
index b0b79c20..7b715084 100644
--- a/transport/src/solana/types/state/game.rs
+++ b/transport/src/solana/types/state/game.rs
@@ -1,5 +1,9 @@
 use borsh::{BorshDeserialize, BorshSerialize};
-use race_core::types::{GameAccount, VoteType, EntryType};
+use race_api::error::Error;
+use race_core::{
+    checkpoint::CheckpointOnChain,
+    types::{EntryType, GameAccount, VoteType},
+};
 use solana_sdk::pubkey::Pubkey;
 
 #[cfg_attr(test, derive(PartialEq, Eq))]
@@ -95,12 +99,10 @@ pub struct GameState {
     pub recipient_addr: Pubkey,
     // the checkpoint state
     pub checkpoint: Vec<u8>,
-    // the value of access version when checkpoint is set
-    pub checkpoint_access_version: u64,
 }
 
 impl GameState {
-    pub fn into_account<S: Into<String>>(self, addr: S) -> GameAccount {
+    pub fn into_account<S: Into<String>>(self, addr: S) -> Result<GameAccount, Error> {
         let GameState {
             title,
             bundle_addr,
@@ -117,14 +119,21 @@ impl GameState {
             entry_type,
             recipient_addr,
             checkpoint,
-            checkpoint_access_version,
             ..
         } = self;
 
         let players = players.into_iter().map(Into::into).collect();
         let servers = servers.into_iter().map(Into::into).collect();
+        let checkpoint_onchain = if checkpoint.is_empty() {
+            Some(
+                CheckpointOnChain::try_from_slice(&checkpoint)
+                    .map_err(|_| Error::MalformedCheckpoint)?,
+            )
+        } else {
+            None
+        };
 
-        GameAccount {
+        Ok(GameAccount {
             addr: addr.into(),
             title,
             settle_version,
@@ -143,8 +152,7 @@ impl GameState {
             unlock_time: None,
             recipient_addr: recipient_addr.to_string(),
             entry_type,
-            checkpoint,
-            checkpoint_access_version,
-        }
+            checkpoint_on_chain: checkpoint_onchain,
+        })
     }
 }