$BTC Bitcoin (BTC) is a decentralized cryptocurrency created in 2009 by a person or group under the pseudonym Satoshi Nakamoto. It operates on a technology called blockchain, a public ledger that securely and transparently records all transactions. Bitcoin is limited to 21 million units, making it deflationary and attractive as a store of value. Its decentralization means it is not controlled by governments or financial institutions, offering freedom and privacy to users. In recent years, BTC has gained popularity as an investment and means of payment, despite its volatility. It has also driven the development of other cryptocurrencies and blockchain technologies, transforming the global financial landscape.