This article explores the development of Bitcoin Finance (BTCFi), with a focus on how Bitcoin is driving its financialization process through integration with traditional finance (TradFi), centralized finance (CeFi), and decentralized finance (DeFi). It also introduces how Solv protocol, through innovative services like wrapped Bitcoin, staking, and liquidity pools, is promoting the growth of BTCFi and helping it progress toward a trillion-dollar market.