A Golang implementation of Paloma Chain, a decentralized, automation network for smart contracts deployed in the Cosmos, EVM, Solana, and Polkadot networks.

Paloma is the fastest, secure crosschain communications blockchain. For Crosschain Software engineers who want simultaneous control of multiple, cross-chain-deployed, smart contracts, Paloma is decentralized and consensus-driven message delivery. Paloma is fast state awareness, low cost state computation, and a powerful attestation system. Polama blockchain enables scalable, crosschain, smart contract execution with any data source.

Table of Contents

• Talk To Us
• International Community
• Releases
• Active Networks
• Join the Testnet
• Contributing

Talk to us

We have active, helpful communities on Twitter and Telegram.

• Twitter
• Telegram
• Discord
• Forum

International Community

• Bengali README
• Chinese README
• Indonesian README
• Japanese README
• Persian README
• Polish README
• Portuguese README
• Romanian README
• Russian README
• Spanish README
• Thai README
• Turkish README
• Ukrainian README
• Vietnamese README

Releases

See Release procedure for more information about the release model.

Active Networks

• Paloma Testnet 15 (January 20, 2023)

Testnet Setup Instructions

To get the latest palomad binary:

wget -O - https://github.com/palomachain/paloma/releases/download/v0.11.6/paloma_Linux_x86_64.tar.gz  | \
  sudo tar -C /usr/local/bin -xvzf - palomad
sudo chmod +x /usr/local/bin/palomad
# Required until we figure out cgo
sudo wget -P /usr/lib https://github.com/CosmWasm/wasmvm/raw/main/internal/api/libwasmvm.x86_64.so

If you're upgrading to the most recent version, you will need to stop palomad before copying the new binary into place.

Steps for upgrading from a prior testnet to paloma-testnet-14 (These need to be done in the order listed)

ALERT: You will need to update your pigeon config.yaml file to reference this new chain-ID!

1. Stop your paloma version and get 0.11.6

service palomad stop
wget -O - https://github.com/palomachain/paloma/releases/download/v0.11.6/paloma_Linux_x86_64.tar.gz | \
  tar -C /usr/local/bin -xvzf - palomad

2. Setup your pigeon relayer by following the instructions and then come back here.

3. Copy the latest genesis file

wget -O ~/.paloma/config/genesis.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/genesis.json

4. Reset your local chain state:

palomad tendermint unsafe-reset-all --home $HOME/.paloma

5. Copy the latest addrbook

wget -O ~/.paloma/config/addrbook.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/addrbook.json

6. Start paloma.

service palomad start

7. If you are planning to be a VALIDATOR with stake, ensure that your pigeon relayer is up & running and that you have at least 0.05 ETH on eth mainnet target chain and 0.05 BNB on bnb mainnet target chain addresses is in your pigeon configuration file.

Connecting to an existing testnet.

Download and install the latest release of palomad.

Initialize our configuration. This will populate a ~/.paloma/ directory.

MONIKER="$(hostname)"
palomad init "$MONIKER"

Copy the configs of the testnet we wish to connect to

wget -O ~/.paloma/config/genesis.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/genesis.json
wget -O ~/.paloma/config/addrbook.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/addrbook.json

Next you can generate a new set of keys to the new machine, or reuse an existing key.

VALIDATOR=<choose a name>
palomad keys add "$VALIDATOR"

# Or if you have a mnemonic already, we can recover the keys with:
palomad keys add "$VALIDATOR" --recover

Head over to https://faucet.palomaswap.com/ and get some funds!

We can verify the new funds have been deposited.

palomad query bank balances --node tcp://testnet.palomaswap.com:26656 "$ADDRESS"

And start the node!

palomad start

If desired we can stake our funds and create a validator.

MONIKER="$(hostname)"
VALIDATOR="$(palomad keys list --list-names | head -n1)"
STAKE_AMOUNT=1000000ugrain
PUBKEY="$(palomad tendermint show-validator)"
palomad tx staking create-validator \
      --fees=1000000ugrain \
      --from="$VALIDATOR" \
      --amount="$STAKE_AMOUNT" \
      --pubkey="$PUBKEY" \
      --moniker="$MONIKER" \
      --website="https://www.example.com" \
      --details="<enter a description>" \
      --chain-id=paloma-testnet-15 \
      --commission-rate="0.1" \
      --commission-max-rate="0.2" \
      --commission-max-change-rate="0.05" \
      --min-self-delegation="100" \
      --yes \
      --broadcast-mode=block

You may receive an error account sequence mismatch, you will need to wait until your local paloma catches up with the rest of the chain.

Running with systemd

First configure the service:

cat << EOT > /etc/systemd/system/palomad.service
[Unit]
Description=Paloma Blockchain
After=network.target
ConditionPathExists=/usr/local/bin/palomad

[Service]
Type=simple
LimitNOFILE=65535
Restart=always
RestartSec=5
WorkingDirectory=~
ExecStartPre=
ExecStart=/usr/local/bin/palomad start
Environment=PIGEON_HEALTHCHECK_PORT=5757
ExecReload=

[Install]
WantedBy=multi-user.target
EOT

Then reload systemd configurations and start the service!

service palomad start

# Check that it's running successfully:
service palomad status
# Or watch the logs:
journalctl -u palomad.service -f

Uploading a local contract

CONTRACT=<contract.wasm>
VALIDATOR="$(palomad keys list --list-names | head -n1)"
palomad tx wasm store "$CONTRACT" --from "$VALIDATOR" --broadcast-mode block -y --gas auto --fees 3000000000ugrain

Setting up a new private testnet

Download and install the latest release of palomad.

Install jq, used by the setup script.

apt install jq

Set up the chain validator.

CHAIN_ID=paloma-testnet-15 \
MNEMONIC="$(cat secret.mn)" \
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/palomachain/paloma/master/scripts/setup-volume-testnet.sh)"

We should now see an error free execution steadily increasing chain depth.

palomad start

Others wishing to connect to the new testnet will need your .paloma/config/genesis.json file, as well as the main peer designation. We can get the main peer designation with jq:

jq -r '.body.memo' ~/.paloma/config/gentx/gentx-*.json