$BTC Bitcoin ($BTC) is the first and most popular cryptocurrency in the world, developed in 2009 by an individual (or group of individuals) known by the pseudonym Satoshi Nakamoto. It is not controlled by any government or organization and operates on a blockchain platform – a decentralized system that secures and transparently records transactions. With a limit of 21 million coins, Bitcoin is likened to "digital gold." It is not only an investment asset but also a global payment tool. Despite its volatility, $BTC still plays a pioneering role in the world of cryptocurrency.