$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an unknown person or group using the name Satoshi Nakamoto. It operates on a decentralized blockchain network, meaning no single authority controls it. Bitcoin allows peer-to-peer transactions without the need for banks or intermediaries. Its supply is limited to 21 million coins, which helps maintain scarcity and value. Many people see it as "digital gold" and use it as a store of value or investment. Over the years, Bitcoin has faced price volatility, but it remains the leading cryptocurrency and a key player in the financial revolution.