Bitcoin (BTC) is a decentralized digital currency created by an anonymous entity known as Satoshi Nakamoto in 2008. It operates on a peer-to-peer network, allowing transactions without the need for intermediaries like banks. Using blockchain technology, Bitcoin ensures transparency and security. Bitcoin's limited supply (21 million coins) and decentralized nature have made it a popular asset for investment and store of value. Its volatility and regulatory challenges, however, make it a high-risk asset. Bitcoin has sparked the development of many other cryptocurrencies, influencing the broader blockchain and digital finance ecosystem.