Wrapped Bitcoin (WBTC) is a token that represents Bitcoin (BTC) on the Ethereum blockchain. It is an ERC-20 token that can be used in Ethereum-based decentralized finance (DeFi) applications. Wrapped Bitcoin is created through a process called "wrapping" where Bitcoin is locked up in a smart contract and an equivalent amount of WBTC is minted and issued to the user. The same process can be done in reverse, where WBTC can be "unwrapped" to receive the equivalent amount of BTC. This allows Bitcoin holders to participate in the DeFi ecosystem while still holding onto their Bitcoin. Wrapped Bitcoin is similar to other cross-chain assets such as renBTC, tBTC and sBTC.

Wrapped Bitcoin (WBTC) is a synthetic form of Bitcoin that exists on the Ethereum blockchain. It is an ERC-20 token backed 1:1 by Bitcoin, meaning that for every WBTC token issued, there is an equivalent amount of Bitcoin held in reserve. The process of wrapping Bitcoin involves depositing actual Bitcoin into a custodial account, and in return, an equivalent amount of WBTC is minted on the Ethereum blockchain. This allows users to interact with Bitcoin on the Ethereum network, enabling the use of Bitcoin in decentralized applications (DApps) and decentralized finance (DeFi) platforms.

Wrapped Bitcoin brings the liquidity and value of Bitcoin into the Ethereum ecosystem, providing users with more flexibility and opportunities for yield generation. It also facilitates the integration of Bitcoin into Ethereum-based smart contracts and decentralized exchanges, allowing for seamless interoperability between the two blockchain networks.