$BTC $BTC refers to Bitcoin, the first and most well-known cryptocurrency. It operates on a decentralized network called blockchain and is used for peer-to-peer transactions. Bitcoin is often seen as a store of value, sometimes referred to as "digital gold," and has a market-driven value that fluctuates based on demand, adoption, and global economic factors. The symbol "$BTC" is typically used to denote its price or value in markets.