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kage-pay

kage

Kage-Pay offers a secure and user-friendly blockchain payment solution for face-to-face transactions, featuring gasless transactions through stablecoin-based fees, and cross-chain functionality by Circle CCTP to simplify managing assets across different blockchains. It employs stealth address technology for privacy and utilizes smartphones for secure transaction management, aiming to enhance blockchain usability and adoption.

Screenshots

f1 f2 app_1 app_2 app_3 app_4 app_5

Contracts

Current Contract Addresses

Polygon Mumbai

  • Account Factory: 0x08E6B84a66008A3761C740cE8B772128aE91fD30
  • ERC 5564 Announcer: 0x1c6559013B51A1bF86D4180Fb7a5dF428f699DC1
  • Paymaster: 0xa4Fe52677f2109e1704E765a790619f432BeF959

Optimistic Sepolia

  • Account Factory: 0x1c6559013B51A1bF86D4180Fb7a5dF428f699DC1
  • ERC 5564 Announcer: 0xa4Fe52677f2109e1704E765a790619f432BeF959
  • Paymaster: 0x6f4f6594437d285fa5C7529CE8602Da68d72336f

Scroll Sepolia

  • USDC: 0x08E6B84a66008A3761C740cE8B772128aE91fD30
  • Account Factory: 0x1c6559013B51A1bF86D4180Fb7a5dF428f699DC1
  • ERC 5564 Announcer: 0xa4Fe52677f2109e1704E765a790619f432BeF959
  • Paymaster: 0x6f4f6594437d285fa5C7529CE8602Da68d72336f

Linea Goerli

  • USDC: 0x586b31774d15ee066c95D22A72A5De71eAA95125
  • Account Factory: 0x08E6B84a66008A3761C740cE8B772128aE91fD30
  • ERC 5564 Announcer: 0x1c6559013B51A1bF86D4180Fb7a5dF428f699DC1
  • Paymaster: Unable to deploy due to no entrypoint.

Zircuit

  • USDC: 0x586b31774d15ee066c95D22A72A5De71eAA95125
  • Account Factory: 0x6f4f6594437d285fa5C7529CE8602Da68d72336f
  • ERC 5564 Announcer: 0xe9eCB0D3A8fDa1267efbb130499Ab807ca643856
  • Paymaster: Unable to deploy due to no entrypoint.

Deploy Contracts

Examples:

  1. ./script/deploy.sh -chain=eth-sepolia -contract=account-factory

  2. ./script/deploy.sh -chain=eth-sepolia -contract=erc-5564-announcer

  3. ./script/deploy.sh -chain=eth-sepolia -contract=paymaster

Setup Paymaster

  1. Set up {chain_name}_PAYMASTER_CONTRACT_ADDRESS and run ./script/paymaster-setup.sh {chain_name}

Or, manually:

  1. Update prices from oracle:

    cast send {contract_address} "updateCachedPrice(bool)" "false" --rpc-url {rpc_url} --private-key={PRIVATE_KEY}

  2. Deposit some ether for paymaster to spend:

    cast send {contract_address} "deposit()" --value 0.1ether --rpc-url {rpc_url} --private-key={PRIVATE_KEY}

  3. When the paymaster is no more needed, withdraw ether from entrypoint:

    cast send {contract_address} "withdrawTo(address, uint256)" "{owner_address}" "0.1ether" --rpc-url {rpc_url} --private-key={PRIVATE_KEY}