# 1. Install Hardhat npm init -y npm install --save-dev hardhat @nomicfoundation/hardhat-toolbox # 2. Create hardhat.config.js module.exports = { solidity: "0.8.20", networks: { arcTestnet: { url: "https://rpc.testnet.arc.network", chainId: 5042002, accounts: [process.env.PRIVATE_KEY] } } }; # 3. Deploy PRIVATE_KEY=0x... npx hardhat run contracts/deploy.js --network arcTestnet # 4. Update CONTRACTS in index.html with deployed addresses # 5. Get testnet USDC: https://faucet.circle.com/