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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-explorer.arbitrum.io/EthereumNitro AnyTrustwss://nova.arbitrum.io/feedN/A
RinkArby^https://rinkeby.arbitrum.io/rpc421611RinkebyETHhttps://testnet.arbiscan.io https://rinkeby-explorer.arbitrum.ioRinkebyNitro Rollupwss://rinkeby.arbitrum.io/feedsnapshot.arbitrum.io/rinkeby/nitro.tar
Nitro Goerli Rollup Testnet^https://goerli-rollup.arbitrum.io/rpc421613GoerliETHhttps://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. Users can now use Alchemy, Infura, QuickNode, Moralis, Ankr, BlockVision, and GetBlock to interact with the Arbitrum One. See node providers for more.

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

  • Consensys
  • FTX
  • Google Cloud
  • Offchain Labs
  • P2P
  • Quicknode
  • Reddit

Users can now use QuickNode to interact with the Arbitrum Nova chain. For a full guide of how to set up an Arbitrum node on QuickNode, see the QuickNode's Arbitrum RPC documentation.

RinkArby: RinkArby is the longest running Arbitrum testnet. It previously ran on the classic stack, but at block 7/28/2022 it was migrated use the Nitro stack! Rinkarby will be deprecated when Rinkeby itself gets deprecated; plan accordingly! Users can now use Alchemy, Infura, QuickNode, Moralis, Ankr, BlockVision, and GetBlock to interact with the Arbitrum One. See node providers for the full guide.

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. Users can now use Alchemy, Infura, and QuickNode to interact with the Arbitrum One. See node providers for more.