$BTC Bitcoin (BTC) is the first and most widely recognized cryptocurrency, created in 2009 by an unknown person or group using the name Satoshi Nakamoto. It operates on a decentralized peer-to-peer network, allowing users to send and receive digital money without relying on banks or governments. Bitcoin uses blockchain technology, where transactions are recorded transparently and securely. Its limited supply of 21 million coins gives it a scarcity similar to gold, leading some to call it "digital gold." Bitcoin is often seen as both a currency and an investment asset, influencing global finance, innovation, and debates around digital ownership and privacy.