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Public_Chains
Public Arbitrum Chains
Public Arbitrum 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 | Retryable Dashboard | | ------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | ------ | --------------- | ----------------------------------------------------------------------- | ------------- | ------------------ | -------------------------------------- | ---------------------------------------- | ------------------------------------------------------------------------------------- | | 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 | Classic Rollup | `wss://arb1.arbitrum.io/feed` | Not Available Yet | [retryable-dashboard.arbitrum.io](https://retryable-dashboard.arbitrum.io/) | | Arbitrum Nova | `https://nova.arbitrum.io/rpc` | 42170 | ETH | `https://nova-explorer.arbitrum.io/` | Ethereum | Nitro AnyTrust | `wss://nova.arbitrum.io/feed` | N/A | [retryable-dashboard.arbitrum.io](https://retryable-dashboard.arbitrum.io/) | | 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` | [retryable-dashboard.arbitrum.io](https://retryable-dashboard.arbitrum.io/) | | Nitro Goerli Rollup Testnet^ | `https://goerli-rollup.arbitrum.io/rpc` | 421613 | GoerliETH | `https://goerli-rollup-explorer.arbitrum.io` | Goerli | Nitro Rollup | `wss://goerli-rollup.arbitrum.io/feed` | N/A | [retryable-dashboard.arbitrum.io](https://retryable-dashboard.arbitrum.io/) |

^ Testnet

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 upcoming upgrade, the Arbitrum One chain will be upgraded to use the Nitro tech stack, maintaining the same state. (Stay tuned for updates!) 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.

Arbitrum Nova: Arbitrum Nova is the first mainnet AnyTrust chain. Usres 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 the full guide.

Using Arbitrum

Note: before interacting with a mainnet chain, users should familiarize themselves with the risks; see Mainnet Beta.

Connect Your Wallet

Connect your wallet to an Arbitrum chain, adding the chain's RPC endpoint if required.

Get Some Native Currency

You'll need a chain's native currency to transact. You can either acquire funds directly on an Arbitrum chain, or get funds on a chain's underlying L1 and bridge it across. You can get testnet Ether from the following faucets:

Supported centralized exchanges allow you to purchase (mainnet) Ether and withdraw it directly onto Arbitrum one.

Deposit And Withdraw

To move your Ether and Tokens between Arbitrum and Ethereum chains, visit bridge.arbitrum.io.

Use L2 Dapps!

Interacting with Arbitrum chains will feel very similar to using Ethereum, just cheaper and faster! To get a sense of what's out there, you can check out our portal page, where we showcase some of the dApps, wallets, and infrastructure currently live on Arbitrum One.

Build on Arbitrum

Dapp developers can build on Arbitrum seamlessly using their favorite Ethereum tooling; see here for contract deployment and here for frontend integration.

What's Next

The team working on Arbitrum is always interested and looking forward to engage with its users. Why not follow us on Twitter or join our community on Discord?