$BTC Bitcoin is the first decentralized cryptocurrency, created in 2009 by an individual (or group) known as Satoshi Nakamoto. It operates on a blockchain network that records every transaction transparently and immutably, without the need for banks or intermediaries. Its maximum supply is 21 million BTC, making it a scarce asset. It is "mined" through a process called Proof-of-Work. Bitcoin is often considered "digital gold" due to its function as a store of value. It is subject to significant price fluctuations, but has revolutionized global finance, paving the way for thousands of cryptocurrencies and the decentralized economy.