$BTC Bitcoin (BTC), the first decentralized cryptocurrency, was created in 2009 by Satoshi Nakamoto. Operating on a peer-to-peer blockchain, it enables secure, transparent transactions without intermediaries. Miners validate transactions, earning rewards, though mining’s energy use sparks debate. BTC’s fixed 21 million coin supply drives scarcity, fueling value speculation. Its price, volatile yet trending upward long-term, hit ~$103,000 in 2025, per recent X posts. Adoption grows, with El Salvador making it legal tender and firms like MicroStrategy holding billions. Critics cite regulatory risks and environmental impact; supporters see it as a hedge against inflation and fiat instability. BTC’s future hinges on scalability, regulation, and mainstream trust.