$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It operates on a decentralized, peer-to-peer network using blockchain technology to ensure transparency and security. Bitcoin has a fixed supply of 21 million coins, making it deflationary by design. It can be used for transactions or held as a store of value, often referred to as "digital gold." BTC is highly volatile, attracting both investors and traders. Its decentralized nature means no government or central bank controls it. Bitcoin remains the foundation of the cryptocurrency market and a key driver of innovation in finance.