$BTC Bitcoin (BTC) is the world’s first and most popular cryptocurrency, created in 2009 by an unknown person or group using the name Satoshi Nakamoto. It operates on a decentralized blockchain network, which records all transactions transparently and securely. Bitcoin is not controlled by any government or bank, making it a peer-to-peer digital currency. It is limited to 21 million coins, making it scarce and valuable. BTC is used for online purchases, investments, and as a store of value like digital gold. Its price is highly volatile but has seen massive growth, attracting investors, traders, and supporters of financial freedom.