Cross-chain · Ethereum → Base
Swap WBTC from Ethereum to WETH on Base
Swap WBTC from Ethereum to WETH on Base. Traders moving wrapped bitcoin into wrapped ETH on chain 8453 receive the Base WETH predeploy.
You spend WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 on Etherscan, an 8 decimal ERC-20. You receive 0x4200000000000000000000000000000000000006 on Basescan. That is not mainnet WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, and it is not bitcoin, and it is not native ETH. Chain id 1 gas is ETH, about 12 seconds a block. Chain id 8453 gas is a separate ETH balance, and this WETH cannot pay it. Switch to Base before you look. The predeploy will not appear in the Ethereum WETH row.
Two wrappers on two chains
Check the predeploy, not the native line
Gas that neither wrapper can pay
When the source-chain pool is the better book
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 WETH on Base?
You spend WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 on Etherscan, an 8 decimal ERC-20. You receive 0x4200000000000000000000000000000000000006 on Basescan.
Is the WETH the Ethereum WETH contract?
No. Ethereum WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. This route pays 0x4200000000000000000000000000000000000006 on Basescan. Native ETH is the gas coin on chain id 1 and, separately, on Base. The contract you can spend as WETH on chain 8453 is the predeploy.
Can this WBTC go to a Bitcoin address instead?
Not on this route. WBTC at 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 is an ERC-20 on Ethereum. The output is an ERC-20 on Base. Neither explorer is a Bitcoin explorer. If you need bitcoin on the Bitcoin chain, this pair is the wrong tool. Confirm the full address on the explorer before you send it onward.
What fails if the wallet holds only WBTC?
The Ethereum transaction. Chain id 1 charges ETH, and WBTC cannot substitute. Add ETH before you approve 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599. On the far side, add ETH on Base or the WETH will be unable to move. Blocks on Ethereum are about 12 seconds.
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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