$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, launched in 2009 by an anonymous individual or group using the pseudonym Satoshi Nakamoto. It operates on a decentralized, peer-to-peer network using blockchain technology to record transactions transparently and securely. Unlike traditional currencies, Bitcoin is not controlled by any central authority. It has a fixed supply of 21 million coins, making it resistant to inflation. Bitcoin can be used for digital payments, investment, and as a store of value, often referred to as "digital gold." Its price is highly volatile, influenced by market demand, regulation, and global economic trends.