$BTC Bitcoin ($BTC) is the first and most well-known cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It operates on a decentralized blockchain network, enabling peer-to-peer transactions without intermediaries like banks. Bitcoin has a fixed supply of 21 million coins, making it deflationary by design. It's often seen as "digital gold" due to its store-of-value properties. BTC is mined through a process called proof-of-work, where computers solve complex problems to validate transactions. Widely used for investment, remittances, and as a hedge against inflation, Bitcoin has influenced the creation of thousands of other cryptocurrencies and shaped the global financial landscape.