Chain ID

A Chain ID is a unique number assigned to different, independent IoTeX Blockchains. For example, IoTeX Mainnet chain hasChain ID = 1, while IoTeX Testnet has Chain ID = 2. Chain IDs in IoTeX are used for security reasons by including them in transaction signatures to prevent transaction replay attacks on different networks.

List of IoTeX Chain ID's

All IoTeX-based blockchains should adopt this Chain ID Mechanism by replacing CHAIN ID with a different and unique value. All testnet, consortium, and any IoTeX-cloned chains are encouraged to do the same:




IoTeX Mainnet


IoTeX Testnet

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