$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the name Satoshi Nakamoto. It operates on a decentralized, peer-to-peer network without the need for a central authority, using blockchain technology to record all transactions. Bitcoin is limited in supply, with a maximum of 21 million coins, making it deflationary in nature. It is often seen as digital gold due to its store-of-value properties and is widely used for investment, trading, and as a hedge against inflation. Bitcoin's price can be highly volatile, influenced by market demand, regulations, technological developments, and macroeconomic factors.