Cross-chain · Base → Arbitrum One

Swap ETH from Base to USDT on Arbitrum One

Swap ETH from Base to USDT on Arbitrum One. You sell native ETH on Base and you receive Tether USDT on Arbitrum One.

The input is Base ETH, chain 8453, placeholder 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, on Basescan as the account balance. Leave a fee. No approval applies to that coin. The output is Tether at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9, 6 decimals, on Arbiscan. Arbitrum One is chain 42161, not Nova. This is not Circle's native USDC at 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 and not USDC.e. Ethereum mainnet Tether is a different contract again. USDT cannot pay ETH gas on One.

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

Tether's One contract

Six decimals match Ethereum USDT, and the issuer is Tether, but 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 lives on chain 42161. A mainnet payment to 0xdAC17F958D2ee523a2206206994597C13D831ec7 will not spend this balance. Confirm the row on Arbiscan. Tether's freeze rules still apply. Coming from Base does not clear an address that is already listed.

What the sale removes

You remove Base ETH, the coin that was paying L2 fees. You do not receive ARB, WETH, or USDC. If Base apps still need that ETH, size the sale so a remainder remains, beyond the network fee. If an Arbitrum venue settles in Tether, this contract is the one to match.

Nova and the dollar lookalikes

Nova is the wrong network. USDC.e is the wrong dollar. Native Circle USDC is the wrong dollar if the instruction says Tether, and Tether is the wrong dollar if the instruction says Circle. How cross-chain bridges work is the handoff. It does not name a duration. Reject a weak minimum.

ETH on One is a separate chore

After USDT shows up you still cannot move it without ETH on chain 42161. The placeholder 0xEeee on One means that gas coin, which this quote did not buy. Fund it first. Basescan will not display the USDT credit. Arbiscan will.

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 ETH from Base to USDT on Arbitrum One?

The input is Base ETH, chain 8453, placeholder 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, on Basescan as the account balance. Leave a fee.

Is this the Ethereum USDT contract?

No. Ethereum Tether is 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan, chain 1, where blocks are about 12 seconds. This route delivers 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 on Arbitrum One. Both use 6 decimals. Check Arbiscan. A mainnet transfer will not move the One balance. Stay on Arbiscan, chain 42161, when you confirm the credit.

Will Nova show this USDT?

No. The destination is chain 42161, Arbitrum One, not Nova. If the wallet is on Nova, switch before you look. The source is native ETH on Base, chain 8453, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. That debit appears on Basescan, not as a Nova transaction. Switch the wallet to Arbitrum One before you judge the result missing.

Can USDT pay the next Arbitrum fee?

No. Gas is ETH. USDT is Tether's ERC-20. Selling Base ETH does not leave ETH on Arbitrum One. Add ETH on chain 42161 or the USDT stays visible on Arbiscan and stuck. The two ETH balances never merge just because the ticker matches. Fund chain 42161 on purpose.

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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