About Arbitrum
Arbitrum One is an Ethereum Layer 2 using Optimistic Rollups. It offers EVM compatibility with lower fees than Ethereum mainnet.Network Details
| Property | Value |
|---|---|
| Chain ID | 42161 |
| Native Token | ETH |
| Block Time | ~250ms |
| Finality | ~2 seconds |
USDC on Arbitrum
| Property | Value |
|---|---|
| Contract | 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 |
| Decimals | 6 |
| Type | Native USDC (Circle) |
Use native USDC, not USDC.e (bridged). Native USDC is issued directly by Circle.
Adding Arbitrum to Wallet
- MetaMask
- One-Click
- Open MetaMask
- Click network dropdown → Add Network
- Add custom network:
- Network Name: Arbitrum One
- RPC URL:
https://arb1.arbitrum.io/rpc - Chain ID:
42161 - Currency: ETH
- Explorer:
https://arbiscan.io
Getting USDC on Arbitrum
Bridging from Ethereum
- Visit bridge.arbitrum.io
- Connect your wallet
- Select USDC and amount
- Confirm bridge transaction
- Wait ~10-15 minutes
From CEX
Many exchanges support direct withdrawals to Arbitrum:- Binance
- Coinbase
- Kraken
- OKX
Why Arbitrum?
EVM Compatible
Same tools and addresses as Ethereum.
Established
One of the oldest and most trusted L2s.
Deep Liquidity
Major DeFi protocols deployed here.
Low Fees
10-20x cheaper than Ethereum mainnet.