Overview Arc is Circle's blockchain where USDC is the native gas token. Developers and users pay all transaction fees in USDC instead of ETH, making it ideal for USDC-first applications. Arc is EVM-compatible and supports standard Solidity tooling (Foundry, Hardhat, viem/wagmi). Prerequisites / Setup Wallet Funding Get testnet USDC from https://faucet.circle.com before sending any transactions. Environment Variables Quick Reference Network Details | Field | Arc (Mainnet) | Arc Testnet | | --- | --- | --- | | Chain ID | (hex: ) | (hex: ) | | RPC | | | | WebSocket | | | | Explorer | https://exp…