$BTC Bitcoin (BTC) is a decentralized digital currency created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. It operates without a central authority, relying on blockchain technology to record transactions securely and transparently. Bitcoin is mined through a process called proof-of-work, where powerful computers solve complex mathematical problems. It has a limited supply of 21 million coins, making it deflationary in nature. Bitcoin is often considered "digital gold" due to its store-of-value properties. While it’s used for peer-to-peer transactions, it's also widely seen as an investment asset, with significant influence in the cryptocurrency market.