3.2 Chain ID and Network Identification

The Chain ID is a unique identifier assigned to each blockchain network. It ensures that transactions are sent to the correct network and prevents replay attacks across different chains.

When configuring tools such as MetaMask, Hardhat, or other frameworks, specifying the correct Chain ID is essential. An incorrect Chain ID will result in failed transactions or connection errors.

For FreCx:

• _{Mainnet Chain ID: 5296290}

• _{Testnet Chain ID: 5296291}