$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, launched in 2009 by the pseudonymous creator Satoshi Nakamoto. It operates on a decentralized, peer-to-peer network using blockchain technology to verify and record transactions. Bitcoin is often referred to as "digital gold" due to its limited supply of 21 million coins and its use as a store of value. It has sparked a global financial revolution, influencing the development of thousands of other cryptocurrencies. Investors use BTC for trading, hedging against inflation, and as a medium of exchange. Its price is highly volatile, driven by demand, news, and market sentiment.