$BTC today update Bitcoin (BTC) is the first decentralized cryptocurrency, created in 2009 by an anonymous entity known as Satoshi Nakamoto. It operates on a peer-to-peer network using blockchain technology, ensuring security and transparency without central authority control. Bitcoin transactions are verified through a process called mining, which involves solving complex cryptographic puzzles. It has a fixed supply of 21 million coins, making it deflationary. BTC is widely used for payments, investment, and as a store of value, often referred to as "digital gold." Despite volatility, it remains the most valuable cryptocurrency in the market.