Cross-chain · Polygon → Base
Swap USDT from Polygon to ETH on Base
Swap USDT from Polygon to ETH on Base. Tether USDT leaves Polygon. Native ETH is what can arrive on Base. You sell a dollar token for gas on chain id 8453, and that gas is not your mainnet ETH.
Sell 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. Buy 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. On Base that label is ETH, not the WETH predeploy. Polygonscan shows Tether. Basescan shows ETH. Base is a layer 2. Base uses ETH for fees even though the chain settles toward Ethereum.
Do not approve the label
Mainnet stays put
The dollar peg is sold for Base ETH
Source fee stays POL
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 USDT from Polygon to ETH on Base?
Sell 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. Buy 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. XAUConnect compares live routes and lets your own wallet sign.
Is Base ETH the same wallet line as mainnet ETH?
No. The label 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE means the native coin of whichever chain you are on. Here the credit is Base, chain id 8453, on Basescan. Ethereum is chain id 1. You sold Polygon Tether at 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. The two ETH balances do not merge. Basescan is the only explorer for this credit.
Does the route deliver WETH?
No. Base WETH is 0x4200000000000000000000000000000000000006. ETH is not WETH. This quote pays native ETH, which can pay gas on the layer 2. If you needed the predeploy, pick that output. Basescan should show a native balance first. Do not assume the predeploy arrived. Native ETH is a different line.
What if the ETH floor looks weak?
Do not sign it. Request a new quote. USDT against ETH moves while you wait. No finish time is given for the bridge. About 2 seconds is only Polygon. The destination is Base, chain id 8453, not Arbitrum and not Ethereum mainnet. Refresh the quote if the floor looks weak.
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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