$BTC Bitcoin is a decentralized digital currency that operates without a central authority or government. Created in 2009 by an anonymous figure known as Satoshi Nakamoto, Bitcoin uses blockchain technology to securely record transactions across a global network. Unlike traditional currencies, Bitcoin is not printed but mined using powerful computers that solve complex mathematical problems. Its limited supply—capped at 21 million coins—adds to its appeal as a hedge against inflation. Bitcoin can be used for online purchases, investments, or as a store of value. Despite price volatility, it remains the most well-known and widely adopted cryptocurrency in the world today.