Bitcoin (BTC) is the first decentralized digital currency, launched in 2009 by an anonymous entity, Satoshi Nakamoto. It operates on a peer-to-peer network, eliminating the need for centralized financial institutions like banks. Bitcoin transactions are verified by miners using blockchain technology, ensuring transparency and security. With a fixed supply of 21 million coins, Bitcoin's scarcity is often likened to "digital gold," protecting against inflation. Its value is driven by demand, and halving events every four years reduce the rate of new BTC issuance. Though Bitcoin is volatile, it is seen as a store of value and is increasingly used for online payments. Despite challenges like high energy consumption and scalability issues, Bitcoin remains a revolutionary financial asset with the potential to disrupt traditional finance. Its impact extends to the rise of decentralized finance (DeFi) and other cryptocurrencies, shaping the future of digital economies.