Wrapped Bitcoin（wBTC）

Similar to RenBTC, wBTC is also an ERC20 token, which is anchored 1:1 with Bitcoin. When the merchant wants to issue Bitcoin on Ethereum, it needs to provide its own Ethereum address to the wBTC token contract to start the minting process, and then the merchant sends the actual Bitcoin to the custodian, who will issue wBTC and send it to the merchant's Ethereum address. wBTC is currently the most popular ERC20 Bitcoin.