$BTC Bitcoin (BTC) is a decentralized digital currency created in 2009 by Satoshi Nakamoto. It is based on blockchain technology and operates through a peer-to-peer network without the need for a central authority. The total supply of BTC is capped at 21 million coins to prevent inflation. Users can acquire Bitcoin through 'mining' or trading, with mining involving solving complex mathematical problems to verify transactions. Bitcoin has garnered attention for its anonymity, ease of cross-border payments, and resistance to censorship. However, its price volatility, high energy consumption, and regulatory uncertainty have also sparked controversy. As of April 2025, Bitcoin remains the leader in the cryptocurrency market, influencing the global financial landscape.