$BTC $BTC (Bitcoin) 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 network using blockchain technology, allowing peer-to-peer transactions without the need for intermediaries like banks. Bitcoin has a fixed supply of 21 million coins, making it scarce and often referred to as “digital gold.” It's widely used as a store of value, investment asset, and medium of exchange. $BTC has influenced the development of thousands of other cryptocurrencies and plays a major role in shaping the global crypto economy and financial innovation.