$BTC Bitcoin (BTC) is a decentralized digital currency that operates without a central authority like a bank or government. It was introduced in 2009 by an anonymous person or group known as Satoshi Nakamoto. Bitcoin transactions are verified through blockchain technology, a public ledger that records every transaction. Miners use powerful computers to solve complex mathematical problems, validating transactions and earning new bitcoins as rewards. Bitcoin is often seen as a store of value or “digital gold” due to its limited supply of 21 million coins. It’s widely used for investments, peer-to-peer payments, and as a hedge against inflation and economic instability.