DotOracle smart contracts

This repository contains Solidity smart contracts of DotOracle.

All deployed contract addresses on different EVM chains can be found at https://github.com/dotoracle/bridge-contracts/tree/v1.0.0/deployments

Install dependencies

npm i

Compile the source code

1. Create .env file and fill corresponding information

PRIVATE_KEY=
INFURA_APIKEY=
BSC_APIKEY=
ETHERSCAN_APIKEY=
SNOWTRACE_APIKEY=
MOONSCAN_APIKEY=
PRIVATE_KEY_MAINNET=
MAINNET_ARCHIVE=

PRIVATE_KEY_NFTBRIDGE_TESTNET=

2. To compile the code npx hardhat compile

To deploy the bridge compilded contracts on any chain

npx hardhat deploy --network <the network name in hardhat.config.js> --tags protocol

To upgraded the deployed contracts

npx hardhat deploy --network <the network name in hardhat.config.js> --tags protocolupgrade

3. Tests npm run test

How to interact with the bridge contracts using solidity

Examples of how to call requestBridge and claimToken to make a bridge transaction from Ethereum to Casper

interface IBridge {
   function requestBridge(
       address _tokenAddress,
       bytes memory _toAddr,
       uint256 _amount,
       uint256 _toChainId
   ) external payable;

   function claimToken(
       address _originToken,
       address _toAddr,
       uint256 _amount,
       uint256[] memory _chainIdsIndex,
       bytes32 _txHash,
       bytes32[] memory r,
       bytes32[] memory s,
       uint8[] memory v,
       string memory _name,
       string memory _symbol,
       uint8 _decimals
   ) external payable;
}

contract ExternalExample {
   function bridgeToken(address erc20Token, uint amount, bytes memory toAddr) public {
       uint casperNetworkId = 131614895977472;
       IBridge bridge = IBridge(0x02b758ce469af940C57A42aD1dE5D404122bc283);
       IERC20 erc20TokenContract = IERC20(erc20Token);
       erc20TokenContract.transferFrom(msg.sender, address(this), amount);

       erc20TokenContract.approve(address(bridge), amount);
       bridge.requestBridge(erc20Token, toAddr, amount, casperNetworkId);
   }

   function claimToken(
       address _originToken,
       address _toAddr,
       uint256 _amount,
       uint256[] memory _chainIdsIndex,
       bytes32 _txHash,
       bytes32[] memory r,
       bytes32[] memory s,
       uint8[] memory v,
       string memory _name,
       string memory _symbol,
       uint8 _decimals) public {
       IBridge bridge = IBridge(0x02b758ce469af940C57A42aD1dE5D404122bc283);
       bridge.claimToken(
           _originToken, 
           _toAddr,
           _amount,
           _chainIdsIndex,
           _txHash,
           r,
           s,
           v,
           _name,
           _symbol,
           _decimals);
   }
}