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Public Chains

The following is a comprehensive list of all of the currently live Arbitrum chains:

NameRPC Url(s)IDNative CurrencyExplorer(s)Underlying L1Current Tech StackSequencer FeedNitro Seed Database URLs
Arbitrum Onehttps://arb1.arbitrum.io/rpc https://arbitrum-mainnet.infura.io/v3/YOUR-PROJECT-ID https://arb-mainnet.g.alchemy.com/v2/-KEY42161ETHhttps://arbiscan.io/ https://explorer.arbitrum.io/EthereumNitro Rollup (8/31)wss://arb1.arbitrum.io/feedsnapshot.arbitrum.io/mainnet/nitro.tar
Arbitrum Novahttps://nova.arbitrum.io/rpc42170ETHhttps://nova.arbiscan.io/ https://nova-explorer.arbitrum.io/EthereumNitro AnyTrustwss://nova.arbitrum.io/feedN/A
Nitro Goerli Rollup Testnet^https://goerli-rollup.arbitrum.io/rpc421613GoerliETHhttps://goerli.arbiscan.io https://goerli-rollup-explorer.arbitrum.ioGoerliNitro Rollupwss://goerli-rollup.arbitrum.io/feedN/A

^ Testnet

All chains use bridge.arbitrum.io/ for bridging assets and retryable-dashboard.arbitrum.io for executing retryable tickets if needed.

For a list of useful contract addresses, see here.

Arbitrum Chains Summary

Arbitrum One: Arbitrum One is the flagship Arbitrum mainnet chain; it is an Optimistic Rollup chain running on top of Ethereum Mainnet, and is open to all users. In an upgrade on 8/31, the Arbitrum One chain is/was upgraded to use the Nitro tech stack, maintaining the same state.

Arbitrum Nova: Arbitrum Nova is the first mainnet AnyTrust chain. The following are the members of the 6-of-7 data availability committee (DAC):

  • Consensys
  • Google Cloud
  • Offchain Labs (2 keys)
  • P2P
  • Quicknode
  • Reddit

Nitro Goerli Rollup Testnet: This testnet (421613) uses the Nitro rollup tech stack; it is expected to be the primary, stable Arbitrum testnet moving forward.

RinkArby: Deprecated 12/20/22

You can use third party node providers to interact with any of the Arbitrum chains listed above, see the full list here.