tBTC (TBTC) is an Ethereum‑based ERC‑20 token designed to represent Bitcoin (BTC) on the Ethereum blockchain and other supported networks. It aims to bring Bitcoin’s liquidity into the decentralized finance (DeFi) ecosystem by allowing BTC holders to convert their Bitcoin into tBTC, which can then be used in smart contracts, lending/borrowing platforms, liquidity pools, and other DeFi applications.