$BTC Bitcoin (BTC) is a decentralized digital currency created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. It operates on a peer-to-peer network without a central authority, using blockchain technology to record transactions transparently and securely. Bitcoin is limited to a supply of 21 million coins, making it deflationary by design. It can be used for online purchases, investment, and as a store of value. Its price is highly volatile, driven by demand, investor sentiment, and global events. Bitcoin has spurred the development of thousands of other cryptocurrencies and remains the most recognized and valuable crypto asset in the market, often referred to as "digital gold."