Cross-chain · Arbitrum One → Base

Swap ARB from Arbitrum One to ETH on Base

Swap ARB from Arbitrum One to ETH on Base. ARB leaves Arbitrum One and native ETH arrives here on Base.

The governance token 0x912CE59144191C1204E64559FE8253a0e49E6548 is what you sell. Arbiscan, chain id 42161, not Nova. Hold separate ETH for the fee. Receive native ETH on Base, sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, chain id 8453. Basescan shows the balance. It is not the WETH predeploy and not mainnet ETH. Base is an L2. Blocks are about 2 seconds. The route does not promise that pace.

Diagram for Swap ARB from Arbitrum One to ETH on Base
ARB leaves Arbitrum One. ETH is what can arrive on Base.

A governance sale that refills Base gas

Pick this route when Base cannot sign and you are willing to sell ARB. The output can pay chain id 8453. It cannot pay chain id 42161, so the source ETH has to be there first. It is not 0x4200000000000000000000000000000000000006. If a contract wanted that predeploy, you would still wrap, and the wrap would spend a slice of the ETH you just received.

Not one shared ETH across rollups

Arbitrum ETH, Base ETH, and Ethereum ETH are three balances. This quote spends ARB, uses a little Arbitrum ETH as gas, and can credit Base ETH. Etherscan stays quiet. Basescan is the destination explorer. Base is chain id 8453. If the wallet is pointed at mainnet, you will not see the credit no matter how long you wait.

Price and voting weight

The minimum ETH is a market number from a governance token. It expires. Unsold ARB keeps its vote. Sold ARB does not. Eighteen decimals on both assets do not mean one ARB becomes one ETH. Reread the floor on a fresh quote.

Wrong delivery if you needed ARB or a dollar

Stop if ARB must remain ARB. Stop if you wanted Circle USDC or USDbC. Stop if you wanted the predeploy specifically and have no ETH to wrap. Stop on Nova. Stop if the balance you hold is WETH rather than the governance token. The spend address is the check.

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 ARB from Arbitrum One to ETH on Base?

The governance token 0x912CE59144191C1204E64559FE8253a0e49E6548 is what you sell. Arbiscan, chain id 42161, not Nova.

Is the ETH I receive on Ethereum or on Base?

On Base, chain id 8453, an L2. The marker is 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Check Basescan, not Etherscan. You sell ARB at 0x912CE59144191C1204E64559FE8253a0e49E6548 on Arbitrum One. Mainnet ETH is chain id 1 and is not this credit. The WETH predeploy is not this credit either. Confirm the address on the explorer before you sign.

Does selling ARB for Base ETH keep my vote?

Only on ARB you do not sell. This page does not escrow tokens. The output is native ETH on Base, which has no ARB voting power. Lower the size if a proposal is close. Chain id 42161, not Nova, is where the remainder stays. About 2 seconds is a Base block, not a voting window.

Why is source ETH required to receive Base ETH?

The signature is on Arbitrum One, which charges its own ETH. ARB cannot pay that fee. Base ETH arrives later and on another chain. Hold a source fee first. The sentinel means ETH on both rollups, but the balances are separate. Do not spend the source row down to zero.

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.

Swap cross-chainExplore markets

Continue exploring

Related markets, guides & networks

Next pages on this subject. Read them before you trade.

Networks
Tokens
Guides
Articles

Build programmatically

Swap via API for bots and AI agents: quotes, builds, and cross-chain routes.

Developer quickstart