$BTC $BTC, or Bitcoin, is the original cryptocurrency and the foundation of the entire digital asset ecosystem. Launched in 2009 by the mysterious Satoshi Nakamoto, Bitcoin was created as a decentralized, peer-to-peer alternative to traditional money. With a capped supply of 21 million coins, $BTC is often seen as "digital gold" and a hedge against inflation. It’s powered by blockchain technology and secured through proof-of-work mining. Over the years, Bitcoin has gained global adoption, becoming a store of value, an investment vehicle, and a symbol of financial sovereignty.