Cross-chain · Ethereum → Arbitrum One

Swap WBTC from Ethereum to ARB on Arbitrum One

Swap WBTC from Ethereum to ARB on Arbitrum One. A chain 42161 wallet that wants the ARB token can spend wrapped bitcoin on Ethereum and receive it.

WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an 8 decimal ERC-20 on Etherscan, not bitcoin on the Bitcoin chain. ARB at 0x912CE59144191C1204E64559FE8253a0e49E6548 is the governance token on Arbiscan, and it does not pay gas. You approve WBTC and pay that approval in ETH on chain id 1. Blocks there are about 12 seconds. After arrival you still need ETH on Arbitrum One, chain id 42161, not Nova, or the ARB cannot move. This route does not deliver native ETH, WETH, or a stablecoin. Confirm the ARB contract on Arbiscan.

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

ARB is the position, ETH is still the fee

Wrapped bitcoin cannot pay an Arbitrum One fee, and neither can the ARB you receive. If the next signature is on chain id 42161, hold ETH there first. This pair is the wrong shape if you wanted USDC, USDT, or native ETH to arrive instead of 0x912CE59144191C1204E64559FE8253a0e49E6548.

Not a bitcoin send

A Bitcoin address will not accept WBTC or ARB. Etherscan is where 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 decreases. Arbiscan is where the ARB balance increases. How cross-chain bridges work describes that split between two EVM chains. It is not a Bitcoin bridge.

Stay on Ethereum when the pool is already there

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 want ARB, buy it on chain 42161. Bridge from Ethereum when the wrapped bitcoin is still on mainnet.

Read the ARB contract before you deposit

Import 0x912CE59144191C1204E64559FE8253a0e49E6548 from Arbiscan with the wallet on Arbitrum One. Eight decimal WBTC units are easy to mistype on the way in. The quote you sign is the figure to trust. This page does not set a price.

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 ARB on Arbitrum One?

Does ARB pay gas after it arrives?

No. ARB at 0x912CE59144191C1204E64559FE8253a0e49E6548 is an ERC-20. Gas on chain id 42161 is ETH. The WBTC you approved, 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599, also cannot pay fees. Hold ETH on Ethereum to start and ETH on Arbitrum One to finish. Nova will not show the ARB.

What is WBTC in this trade?

An ERC-20 at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599, 8 decimals, on Ethereum, checked on Etherscan. 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 ARB on Arbitrum One, this is the pair.

Why does the Ethereum side still need ETH?

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

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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