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Public Chains

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

Name RPC Url(s) ID Native Currency Explorer(s) Underlying L1 Current Tech Stack Sequencer Feed Nitro Seed Database URLs
Arbitrum One https://arb1.arbitrum.io/rpc https://arbitrum-mainnet.infura.io/v3/YOUR-PROJECT-ID https://arb-mainnet.g.alchemy.com/v2/-KEY 42161 ETH https://arbiscan.io/ https://explorer.arbitrum.io/ Ethereum Nitro Rollup (8/31) wss://arb1.arbitrum.io/feed snapshot.arbitrum.io/mainnet/nitro.tar
Arbitrum Nova https://nova.arbitrum.io/rpc 42170 ETH https://nova.arbiscan.io/ https://nova-explorer.arbitrum.io/ Ethereum Nitro AnyTrust wss://nova.arbitrum.io/feed N/A
RinkArby^ https://rinkeby.arbitrum.io/rpc 421611 RinkebyETH https://testnet.arbiscan.io https://rinkeby-explorer.arbitrum.io Rinkeby Nitro Rollup wss://rinkeby.arbitrum.io/feed snapshot.arbitrum.io/rinkeby/nitro.tar
Nitro Goerli Rollup Testnet^ https://goerli-rollup.arbitrum.io/rpc 421613 GoerliETH https://goerli.arbiscan.io https://goerli-rollup-explorer.arbitrum.io Goerli Nitro Rollup wss://goerli-rollup.arbitrum.io/feed N/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.