$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 is a decentralized digital currency, meaning it operates without a central authority like a bank or government. Bitcoin transactions are recorded on a blockchain, a public ledger that ensures transparency and security. BTC is often used as a store of value, like digital gold, and is limited to 21 million coins, making it scarce. Its price is highly volatile, influenced by demand, regulation, adoption, and global events. Many see it as the future of money.