evm-token-bridge

EVM Token Bridge - Transfers ERC20 tokens from source blockchain network to target network. We are going to use Goerli - Ethereum's Testnet and Mumbai - Polygon's testnet.

Deployed Bridge contracts

GOERLI BRIDGE: 0x2759a3c726cB59b70bb4B80C73bE20Aa3Dd125C0
MUMBAI BRIDGE: 0x6DeFf377FA433F879d2cfDA5F169352b1e4335DD

Installment

Make sure you are in the directory of the cloned project then

  npm install

Create .env file

Create an .env file with the following structure

ETHEREUM_RPC_URL=YOUR ETHEREUM_RPC_URL HERE
MUMBAI_RPC_URL=YOUR MUMBAI_RPC_URL HERE
PRIVATE_KEY=YOUR PRIVATE_KEY HERE
ETHERSCAN_KEY=YOUR ETHERSCAN_KEY HERE
POLYGONSCAN_KEY=YOUR POLYGONSCAN_KEY HERE

Test

If everything from the previous steps was followed it's time to test the project with the following command:

  npx hardhat test

Deployment

First we have to deploy our ERC20 token on desired network. In our case we are going to deploy on Goerli. Make sure you have some GoerliETH in your wallet.

deploy-erc20-goerli is a custom task implemented in hardhat.config.ts

  npx hardhat deploy-erc20-goerli --network goerli

Second we have to deploy and verify our EthereumBridge contract on Goerli

  npx hardhat deploy-ethbridge-goerli --network goerli

Third we have to deploy and verify our PolygonBridge contract on Mumbai

  npx hardhat deploy-polygonbridge-mumbai --network matic