$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group known as Satoshi Nakamoto. It operates on a decentralized peer-to-peer network using blockchain technology, which ensures transparency and security without a central authority. Bitcoin is often viewed as digital gold due to its limited supply of 21 million coins and its use as a store of value. It can be used for transactions, though scalability and volatility remain concerns. BTC has influenced the rise of thousands of other cryptocurrencies and continues to shape the future of finance and decentralized systems.