$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, launched in 2009 by an anonymous creator known as Satoshi Nakamoto. It operates on a decentralized peer-to-peer network using blockchain technology. Unlike traditional currencies, Bitcoin isn't controlled by any central bank or government. Users can send and receive BTC globally with low fees and without intermediaries. Its limited supply of 21 million coins adds scarcity, which drives demand. Bitcoin is often called "digital gold" due to its store-of-value properties. While it's volatile, many see it as a hedge against inflation and a revolutionary step in the future of finance.