$BTC Bitcoin (BTC) is the world's first decentralized digital currency. Created in 2009 by an anonymous entity known as Satoshi Nakamoto, it operates on a technology called blockchain. This public, distributed ledger records all transactions, secured by cryptography, removing the need for traditional intermediaries like banks. Bitcoin is "mined" by powerful computers solving complex problems, and its supply is limited, contributing to its "digital gold" status. While volatile, it offers peer-to-peer transactions and has gained increasing adoption as an investment and payment method, with its current price (June 2025) hovering around $100,000-$110,000.