$BTC Bitcoin ($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 blockchain network without the need for a central authority like a bank. Bitcoin is often seen as digital gold because of its limited supply—only 21 million coins will ever exist. It’s used for peer-to-peer transactions, investment, and as a hedge against inflation. Its price is highly volatile, driven by supply, demand, regulation, and market sentiment. Bitcoin continues to play a major role in the global financial and crypto ecosystem.