$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, launched in 2009 by the pseudonymous creator Satoshi Nakamoto. It operates on a decentralized peer-to-peer network using blockchain technology, allowing secure, transparent, and irreversible transactions without intermediaries like banks. Bitcoin has a fixed supply of 21 million coins, making it deflationary and often referred to as "digital gold." It’s widely used as a store of value, investment asset, and, increasingly, for payments. BTC's price is highly volatile, influenced by market demand, macroeconomic trends, regulation, and institutional adoption. Bitcoin remains a key driver of the global crypto market and innovation.