Cross-chain · Avalanche C-Chain → Arbitrum One

Swap USDC from Avalanche C-Chain to WETH on Arbitrum One

Swap USDC from Avalanche C-Chain to WETH on Arbitrum One. Circle USDC leaves C-Chain, and Arbitrum WETH is what can arrive: wrapped ether for contracts, not the ETH that pays gas.

Spend 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E, Circle's USDC on Avalanche C-Chain, chain id 43114, and confirm it on Snowtrace. The WETH contract is 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum One, chain id 42161, which you confirm on Arbiscan. That address is not the native sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, not Ethereum WETH, and not Base WETH. Nova will not show this balance.

Diagram for Swap USDC from Avalanche C-Chain to WETH on Arbitrum One — USDC leaves Avalanche C-Chain. WETH is what can arrive on Arbitrum One.

The wrapper is inventory, not the fee

WETH exists so protocols can move ether under ERC-20 rules. It does not pay Arbitrum gas. After this route, a wallet can hold WETH and still fail the next transaction for lack of ETH. If the only thing you need is fee balance, the native ETH route is the one that matches the job. Signing this page and then wrapping nothing you can spend is a wasted hop.

Match 0x82aF on Arbiscan, not a lookalike WETH

Ethereum's canonical WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on chain id 1. Polygon and Base use different WETH addresses again. Pasting the wrong one into a token list shows a zero balance and invites a fake. WBTC is another wrapper and is not native bitcoin; this quote does not deliver it. Arbiscan is the only explorer that proves 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on chain id 42161.

Circle on C-Chain has to be the native contract

The source token is Circle, not Tether, and not bridged USDC.e. An approval, if the wallet raises one, should name 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E and a spender you recognize from the quote. AVAX still pays that approval on chain id 43114. Snowtrace is where you watch the USDC leave. The bridge's own wait is separate from C-Chain confirmation, and nothing here clocks it.

Wrong page for a gas top-up or a mainnet pool

Choose another route if the destination contract wants native ETH, if you needed Tether USDT, or if the pool you care about sits on Ethereum. A round trip off C-Chain and back only makes sense when Arbitrum WETH is the inventory you intend to hold. How a lock on one chain becomes a release on another is covered in how cross-chain bridges work. Refuse the quote when the minimum WETH is below what you will accept.

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 USDC from Avalanche C-Chain to WETH on Arbitrum One?

Can Arbitrum WETH from this swap pay gas?

No. WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 is an ERC-20. Gas on Arbitrum One, chain id 42161, is native ETH. Circle USDC left Avalanche C-Chain and became the wrapper, not the fee coin. Hold ETH before you try to spend the WETH. Check the arrival on Arbiscan. Confirm the contract on the explorer before you sign.

Is this the same WETH as on Ethereum?

No. Ethereum WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on chain id 1, and Etherscan is that explorer. This route delivers Arbitrum WETH only. Blocks on Ethereum are about 12 seconds and do not describe this bridge. Nova is not Arbitrum One. Confirm chain id 42161 in the wallet.

What if I hold USDC.e instead of native USDC?

Then this quote is pointed at the wrong balance. It spends Circle USDC at 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on C-Chain, chain id 43114. Snowtrace will show a different contract for bridged USDC.e. Swap or bridge into the native Circle token first, and keep AVAX for the fee. Keep the destination gas token or the arrival cannot move.

Live execution

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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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