Developer FAQs

What are the chainIDs for the various networks?

• mainnet: chainId: 1

• ropsten: chainId: 3

• rinkeby chainId: 4

• optimism: chainId: 10

• kovan: chainId: 42

• binance: chainId: 56

• optimisticKovan: chainId: 69

• xdai: chainId: 100

• polygon: chainId: 137

• ganache: chainId: 1337

• localhost: chainId: 31337

• arbitrum: chainId: 42161