RPC reference
Arbitrum One RPC URL
The listed Arbitrum One mainnet RPC endpoint is https://arb1.arbitrum.io/rpc. This page cites
the source material used for the RPC URL, chain ID, gas token, and explorer.
RPC URL Public endpoint
Chain ID 42161
Gas token ETH
Checked April 30, 2026
Verification record
This page is checked against cited public sources. It is not a live uptime, latency, or production reliability monitor.
- Last checked
- Verification status
- Verified metadata
- Verification run
manual-static-seed-2026-04-30- Verification tool
manual-source-review- Source set
- Arbitrum docs
- Next review
- monthly; after May 30, 2026
Arbitrum One mainnet endpoint details
- Primary public RPC
https://arb1.arbitrum.io/rpc- Network
- Arbitrum One mainnet, Optimistic L2 mainnet
- Explorer
- https://arbiscan.io
- Chain ID reference
- Arbitrum One chain ID 42161
- Next review
- monthly; after May 30, 2026
How to read this RPC listing
Treat this as a source-cited reference for configuring wallets, local tooling, or documentation examples. Main.net does not operate this RPC endpoint and does not make uptime, latency, privacy, or support guarantees for it.
Compare bridge routes, withdrawal timing, and finality assumptions before moving large balances across rollups.
Sources
Metadata status: Verified metadata. Source set: Arbitrum docs.