$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 the need for intermediaries like banks. Bitcoin uses a proof-of-work consensus mechanism, where miners validate transactions and secure the network in exchange for newly minted coins. Its supply is capped at 21 million, making it deflationary by design. BTC is often considered "digital gold" due to its limited supply and store-of-value characteristics. Widely traded on global exchanges, Bitcoin has become a key asset in the world of digital finance and investment.