Arbitrum chain information

Arbitrum public RPC endpoints

caution

• Unlike the RPC Urls, the Sequencer endpoints only support eth_sendRawTransaction and eth_sendRawTransactionConditional calls.
• Arbitrum public RPCs do not provide Websocket support.
• Visit Quicknode's Arbitrum Sepolia faucet for testnet Sepolia tokens on L2.

This section provides an overview of the available public RPC endpoints for different Arbitrum chains and necessary details to interact with them.

Name	RPC Url(s)	Chain ID	Block explorer	Underlying chain	Tech stack	Sequencer feed URL	Sequencer endpoint⚠️
Arbitrum One	https://arb1.arbitrum.io/rpc	42161	https://arbiscan.io/	Ethereum	Nitro (Rollup)	wss://arb1.arbitrum.io/feed	https://arb1-sequencer.arbitrum.io/rpc
Arbitrum Nova	https://nova.arbitrum.io/rpc	42170	https://nova.arbiscan.io/	Ethereum	Nitro (AnyTrust)	wss://nova.arbitrum.io/feed	https://nova-sequencer.arbitrum.io/rpc
Arbitrum Sepolia (Testnet)	https://sepolia-rollup.arbitrum.io/rpc	421614	https://sepolia.arbiscan.io	Sepolia	Nitro (Rollup)	wss://sepolia-rollup.arbitrum.io/feed	https://sepolia-rollup-sequencer.arbitrum.io/rpc

More RPC endpoints

More Arbitrum chain RPC endpoints can be found in Chain Connect: Arbitrum One and Arbitrum Nova.

Alternatively, to interact with public Arbitrum chains, you can rely on many of the same popular node providers that you are already using on Ethereum:

Third-party RPC providers

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Provider	Arb One?	Arb Nova?	Arb Sepolia?	Websocket?
1RPC	✅
Alchemy	✅	✅	✅	✅
Allnodes	✅	✅		✅
Ankr	✅			✅
Blast	✅	✅		✅
BlockPi	✅	✅
BlockVision	✅
Chainbase	✅			✅
Chainnodes	✅
Chainstack	✅			✅
DataHub	✅
dRPC	✅	✅	✅	✅
GetBlock	✅			✅
Infura	✅		✅	✅
Lava	✅	✅
Moralis	✅
Nirvana Labs	✅	✅	✅	✅
NodeReal	✅	✅
NOWNodes	✅
Pocket Network	✅
Quicknode	✅	✅	✅	✅
Unifra	✅

Arbitrum Smart Contract Addresses

The following information may be useful to those building on Arbitrum. We list the addresses of the smart contracts related to the protocol, the token bridge and precompiles of the different Arbitrum chains.

Protocol smart contracts

Core contracts

The following contracts are deployed on Ethereum (L1)

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
Rollup	0x5eF0...Ba35	0xFb20...AD88	0xd808...81C8
Sequencer Inbox	0x1c47...82B6	0x211E...c21b	0x6c97...be0D
CoreProxyAdmin	0x5547...2dbD	0x71D7...7148	0x1ed7...0686

Cross-chain messaging contracts

The following contracts are deployed on Ethereum (L1)

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
Delayed Inbox	0x4Dbd...AB3f	0xc444...3949	0xaAe2...ae21
Bridge	0x8315...ed3a	0xC1Eb...76Bd	0x38f9...33a9
Outbox	0x0B98...4840	0xD4B8...cc58	0x65f0...B78F
Classic Outbox***	0x7607...1A40 0x667e...337a

***Migrated Network Only

Fraud proof contracts

The following contracts are deployed on Ethereum (L1)

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
ChallengeManager	0xe589...6f58	0xA590...af0D	0x84ED...0700
OneStepProver0	0x499A...EfcC	0x8323...d236	0xAF57...0ddA
OneStepProverMemory	0xb556...B676	0x7a6C...9979	0xA6Ac...f0c5
OneStepProverMath	0xd315...7970	0x1efb...f2F5	0xfEe5...42F4
OneStepProverHostIo	0xb965...D13A	0x9CBC...7613	0xA53a...752a
OneStepProofEntry	0x3E1f...A1DF	0x7Adc...0Fc5	0x08a2...5961

Token bridge smart contracts

Core contracts

The following contracts are deployed on Ethereum (L1)

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
L1 Gateway Router	0x72Ce...31ef	0xC840...cD48	0xcE18...8264
L1 ERC20 Gateway	0xa3A7...0EeC	0xB253...21bf	0x902b...3aFF
L1 Arb-Custom Gateway	0xcEe2...180d	0x2312...232f	0xba2F...40F3
L1 Weth Gateway	0xd920...e2db	0xE4E2...0BaE	0xA8aD...0e1E
L1 Weth	0xC02a...6Cc2	0xC02a...6Cc2	0x7b79...E7f9
L1 Proxy Admin	0x9aD4...0aDa	0xa8f7...e560	0xDBFC...44b0

The following contracts are deployed on the corresponding L2 chain

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
L2 Gateway Router	0x5288...F933	0x2190...DFa8	0x9fDD...43C7
L2 ERC20 Gateway	0x09e9...1EEe	0xcF9b...9257	0x6e24...b502
L2 Arb-Custom Gateway	0x0967...5562	0xbf54...51F4	0x8Ca1...42C5
L2 Weth Gateway	0x6c41...623B	0x7626...D9eD	0xCFB1...556D
L2 Weth	0x82aF...Bab1	0x722E...5365	0x980B...7c73
L2 Proxy Admin	0xd570...2a86	0xada7...d92C	0x715D...5FdF

Third party gateways

The following contracts are deployed on Ethereum (L1)

	Arbitrum One
L1 Dai Gateway	0xD3B5...3011
L1 Livepeer Gateway	0x6142...0676

The following contracts are deployed on the corresponding L2 chain

	Arbitrum One
L2 Dai Gateway	0x4671...6C65
L2 Livepeer Gateway	0x6D24...D318

Precompiles

The following precompiles are deployed on every L2 chain and always have the same address

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
ArbAddressTable	0x0000...0066	0x0000...0066	0x0000...0066
ArbAggregator	0x0000...006D	0x0000...006D	0x0000...006D
ArbFunctionTable	0x0000...0068	0x0000...0068	0x0000...0068
ArbGasInfo	0x0000...006C	0x0000...006C	0x0000...006C
ArbInfo	0x0000...0065	0x0000...0065	0x0000...0065
ArbOwner	0x0000...0070	0x0000...0070	0x0000...0070
ArbOwnerPublic	0x0000...006b	0x0000...006b	0x0000...006b
ArbRetryableTx	0x0000...006E	0x0000...006E	0x0000...006E
ArbStatistics	0x0000...006F	0x0000...006F	0x0000...006F
ArbSys	0x0000...0064	0x0000...0064	0x0000...0064
ArbWasm	-	-	0x0000...0071
ArbWasmCache	-	-	0x0000...0072
NodeInterface	0x0000...00C8	0x0000...00C8	0x0000...00C8

Misc

The following contracts are deployed on the corresponding L2 chain

	Arbitrum One	Arbitrum Nova	Arbitrum Sepolia
L2 Multicall	0x842e...4EB2	0x5e1e...cB86	0xA115...d092

Stylus

ALPHA RELEASE, PUBLIC PREVIEW DOCS

Stylus is currently tagged as a release-candidate. The code has been audited, and testing in production environments is underway. Caution should be taken when used in production scenarios. This documentation is currently in public preview.

To provide feedback, click the Request an update button at the top of this document, join the Arbitrum Discord, or reach out to our team directly by completing this form.

Faucets

Below you can find faucets for obtaining testnet ETH. If using a faucet on Ethereum Sepolia or Arbitrum Sepolia, your testnet ETH can be bridged to the Stylus testnet on the Arbitrum Bridge.

Faucet Operator	Faucet URL	Chain
QuickNode	https://faucet.quicknode.com/arbitrum/sepolia	Arbitrum Sepolia
Alchemy	https://www.alchemy.com/faucets/arbitrum-sepolia	Arbitrum Sepolia
Sepolia PoW Faucet	https://sepolia-faucet.pk910.de/	Ethereum Sepolia