Bitcoin is the first and most well-known cryptocurrency, created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. It operates on a decentralized network, meaning it is not controlled by any central authority.
Bitcoin has gained widespread popularity as a digital currency that allows for secure, peer-to-peer transactions without the need for intermediaries like banks. Its value is determined by supply and demand on cryptocurrency exchanges, with its price being highly volatile.