$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group known as Satoshi Nakamoto. It is a decentralized digital currency that operates without a central authority like a bank or government. Bitcoin transactions are verified by network nodes through cryptography and recorded on a public ledger called the blockchain. BTC is often seen as “digital gold” due to its limited supply—only 21 million bitcoins can ever exist. It is widely used for investment, trading, and as a store of value. Bitcoin’s price is highly volatile, driven by demand, market sentiment, and global events.