WETH is not generated by staking BTC like WBTC. It is a contract that wraps ETH into WETH, and it is almost impossible for problems to occur.
This contract holds billions of dollars of ETH, and users can exchange ETH for WETH or WETH for ETH at a 1:1 ratio at any time.
Why do you need WETH?
ETH can be used as a fuel fee on Ethereum, but it was born before the ERC-20 format and is not an ERC-20 standard token.
In Ethereum's on-chain operations, authorization is required when using ERC-20 tokens to interact with new contracts, but this is not required when using ETH because the two follow different standards.
For some DeFi applications that only accept ERC-20 tokens, they cannot accept ETH that is not in this format, so WETH in ERC-20 format appears.
For some contract developers, they can save development time by directly using WETH without having to develop additional contracts that support ETH.
