$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the name Satoshi Nakamoto. It operates on a decentralized blockchain, enabling peer-to-peer transactions without the need for intermediaries like banks. BTC is often seen as "digital gold" due to its limited supply of 21 million coins and its role as a store of value. Its price is highly volatile, driven by market demand, adoption, and macroeconomic factors.