什么是wbtc
WBTC是代表比特币的ERC-20代币，一个WBTC等于一个BTC，BTC可以转换为WBTC，反之亦然。作为ERC20版本的比特币，WBTC的传输速度比普通比特币要快，但是WBTC的主要优势在于它集成到以太坊钱包、dapp和智能合约的世界中。
n brief
WBTC is an Ethereum token designed to bring increased liquidity to DeFi apps
BTC holders can lend their Bitcoin in the form of WBTC and earn interest.
WBTC is managed by a group of organizations working under the DeFi banner to help provide more sophisticated financial services.
Wrapped Bitcoin (WBTC) is an ERC-20 token backed 1:1 by Bitcoin and held at Bitgo Trust, and the underlying holdings are verifiable here. WBTC brings the liquidity of Bitcoin to the Ethereum ecosystem.
Users can wrap and unwrap BTC seamlessly via their CoinList wallet.
https://decrypt.co/resources/what-is-wbtc-explained-bitcoin-ethereum-defi