Cross-chain · Ethereum → Polygon

Swap WBTC from Ethereum to USDT on Polygon

Swap WBTC from Ethereum to USDT on Polygon. A chain 137 payment in Tether can start from wrapped bitcoin held as an ERC-20 on Ethereum.

Approve WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 on Etherscan, 8 decimals. It is not a Bitcoin-network coin. Receive 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan, Tether on Polygon, 6 decimals. Ethereum USDT at 0xdAC17F958D2ee523a2206206994597C13D831ec7 is not the balance that increases. You pay ETH gas on chain id 1, where a block takes about 12 seconds. The recipient has to be on chain id 137, watching Polygonscan, or the Tether payment is invisible to them. An Etherscan watch on Ethereum USDT will not update. Send the network name with the amount. Confirm it on Polygonscan.

Diagram for Swap WBTC from Ethereum to USDT on Polygon
WBTC leaves Ethereum. USDT is what can arrive on Polygon.

Two contracts name the whole pair

Spend 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 on Etherscan. Receive 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan. WBTC in, Polygon USDT out. If either explorer shows a different contract under a similar name, stop. Copies reuse the first and last characters of a popular address.

An Ethereum invoice wants different Tether

This route is the wrong tool when the invoice prints 0xdAC17F958D2ee523a2206206994597C13D831ec7. Sell WBTC for that Tether on mainnet. Bridge when the invoice says Polygon and prints the Polygonscan address. How to bridge assets between chains is the signing order.

Bitcoin chain is the wrong destination

Sending WBTC to a Bitcoin address will not redeem it, and this route will not either. You finish holding Tether on chain id 137. If the goal is bitcoin in a Bitcoin wallet, use the redemption path your custodian documents. Polygonscan will not show a bitcoin UTXO.

Fees around an 8 decimal token

Keep ETH for the Ethereum approval. Keep POL for the chain 137 transfer that follows, because the USDT cannot pay it. Blocks on Polygon are about 2 seconds. Size the trade from the quote, and remember that 8 decimal units are easy to mistype by a factor of ten.

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 USDT on Polygon?

Approve WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 on Etherscan, 8 decimals. It is not a Bitcoin-network coin.

Is WBTC bitcoin for this payment?

No. WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an ERC-20 on Ethereum, 8 decimals, checked on Etherscan. This route spends it and pays Polygon USDT. A Bitcoin wallet cannot hold either token. Treat the position as an Ethereum asset until you redeem it through a separate process.

Which Tether should the recipient watch?

Polygonscan for 0xc2132D05D31c914a87C6611C10748AEb04B58e8F, on chain id 137. Watching Etherscan for 0xdAC17F958D2ee523a2206206994597C13D831ec7 will show no change from this route. Ask them to switch networks. The token uses 6 decimals, like Ethereum USDT, and it is still a different contract. Ask them to switch networks before they check.

What if I am still trading on Ethereum?

Stay there. WBTC and Tether already have a mainnet market, and the output is 0xdAC17F958D2ee523a2206206994597C13D831ec7. This bridge is the wrong tool for that market. Use it when the Tether has to be the Polygon contract because the next wallet or pool is on chain 137.

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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