Cross-chain · Ethereum → Arbitrum One
Swap WETH from Ethereum to USDC on Arbitrum One
Swap WETH from Ethereum to USDC on Arbitrum One. Holders of wrapped ETH who need Circle's native USDC on chain 42161 spend WETH and receive that dollar.
You approve WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. Withdrawing from that contract unwraps to native ETH and stays on Ethereum. This route spends the WETH and delivers 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 on Arbiscan, Circle's native USDC, 6 decimals. Bridged USDC.e at 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8 is not the receipt. Gas to start is still ETH on chain id 1. The destination is Arbitrum One, not Nova, and the USDC there needs a separate ETH balance to move. Blocks on Ethereum are about 12 seconds. Import the native USDC from Arbiscan after you switch to chain id 42161. USDC.e will not reflect this route, and Etherscan will not show the new dollars.
Unwrapping WETH stays on Ethereum
Arbitrum native USDC, not USDC.e
ETH on mainnet, then ETH on Arbitrum One
Spending the 6 decimal USDC on Arbitrum One
Legal
Risk disclosure
XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.
Frequently asked questions
What is the best way to swap WETH from Ethereum to USDC on Arbitrum One?
You approve WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. Withdrawing from that contract unwraps to native ETH and stays on Ethereum.
Can I unwrap WETH and then bridge the ETH?
You can, and that is a different route. Withdrawing 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 returns native ETH on chain id 1. This page spends the WETH contract and pays Arbitrum native USDC at 0xaf88d065e77c8cC2239327C5EDb3A432268e5831. Choose the output the destination wallet is supposed to hold.
What do I approve on Etherscan?
Approve 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. Do not approve Circle's Ethereum USDC for this pair. You still need native ETH for gas on chain id 1. Blocks are about 12 seconds. WETH is the asset being sold. ETH is only the fee. ETH on chain id 1 is only the fee.
Which USDC will the wallet show?
Circle's native USDC at 0xaf88d065e77c8cC2239327C5EDb3A432268e5831, 6 decimals, on Arbiscan. USDC.e will not move. Set the wallet to Arbitrum One, chain id 42161, not Nova. If the balance looks enormous or tiny, re-import the contract and read its decimals. Then switch the wallet to chain id 42161.
Trade on XAUConnect
Open the swap page with this cross-chain route pre-selected, then connect your wallet on the source chain to quote and execute. You keep the keys.
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