Cross-chain · Ethereum → Arbitrum One

Swap WBTC from Ethereum to ETH on Arbitrum One

Swap WBTC from Ethereum to ETH on Arbitrum One. A chain 42161 wallet that needs gas can spend wrapped bitcoin on Ethereum and receive native ETH there.

WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an 8 decimal ERC-20 on Etherscan, not a coin on the Bitcoin chain. Native ETH on Arbitrum One is marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and shows up as the gas balance on Arbiscan for chain id 42161, not Nova. You approve the WBTC contract and pay that approval in ETH on Ethereum. Blocks there are about 12 seconds. You do not import the destination placeholder. The ETH you receive can pay later fees on Arbitrum One.

Diagram for Swap WBTC from Ethereum to ETH on Arbitrum One — WBTC leaves Ethereum. ETH is what can arrive on Arbitrum One.

Arbitrum One gas is the reason

Wrapped bitcoin cannot pay a chain 42161 fee. If the next signature has to happen on Arbitrum One, the wallet needs native ETH there. This pair turns WBTC you already hold on Ethereum into that gas coin. It is the wrong shape if you wanted USDC, USDT, or ARB to arrive instead.

This never becomes a bitcoin send

A Bitcoin address will not accept WBTC, and it will not accept Arbitrum ETH. Etherscan is where 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 decreases. Arbiscan is where the native ETH balance on chain id 42161 increases. How cross-chain bridges work describes that split.

Use the Ethereum pool when you are staying

If you want ETH, WETH, USDC, or USDT on mainnet, sell WBTC there. This route is the wrong tool for those balances. If you already hold Arbitrum assets and only need a little ETH, swap those assets on chain 42161. Bridge from Ethereum when the wrapped bitcoin is still on mainnet.

Leave ETH for the next click

The coin you receive is the fee token on Arbitrum One, so it can pay a follow-up trade. Spending all of it strands any other token in the same wallet. Do not look for it on Nova. The placeholder is not a contract to import.

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 WBTC from Ethereum to ETH on Arbitrum One?

Should I import the received ETH by contract?

No. Native ETH on Arbitrum One uses 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE and appears as the gas balance once the wallet is on chain id 42161. Importing that string creates a junk row. Confirm the increase on Arbiscan. The ERC-20 you approve is WBTC, on Etherscan.

What is WBTC if it is not bitcoin?

An ERC-20 at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599, 8 decimals, on Ethereum. This route can spend that contract. It cannot move coins on the Bitcoin network. If your goal is a Bitcoin wallet, stop. If your goal is ETH gas on Arbitrum One funded from that ERC-20, this is the pair.

Why is ETH on Ethereum still required?

Because the spend starts on chain id 1. WBTC cannot pay Ethereum gas, and the ETH you will receive on Arbitrum One does not exist on Ethereum yet. Hold ETH for the approval and the send. Blocks are about 12 seconds. After arrival, that new ETH covers chain id 42161.

Live execution

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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