$BTC Bitcoin ($BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the name Satoshi Nakamoto. It operates on a decentralized, peer-to-peer blockchain network that allows secure, transparent transactions without intermediaries. Bitcoin has a fixed supply of 21 million coins, making it deflationary and often compared to digital gold. It’s widely used for investment, payments, and as a store of value. Price volatility, regulatory scrutiny, and scalability are ongoing challenges. Despite this, Bitcoin remains the leader in the crypto market, influencing trends and serving as a benchmark for the entire cryptocurrency ecosystem.