$BTC $BTC (Bitcoin) is the first and most well-known cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It operates on a decentralized blockchain network, allowing peer-to-peer transactions without intermediaries like banks. Bitcoin is capped at 21 million coins, making it scarce and often compared to digital gold. It's used for investment, payment, and as a store of value. Price volatility, regulatory scrutiny, and environmental concerns over mining are key issues. Despite this, Bitcoin remains a leading force in the crypto market, influencing the broader digital asset landscape and continuing to drive innovation in decentralized finance (DeFi) and blockchain tech.