$BTC Bitcoin ($BTC) was introduced in 2009 by an anonymous individual or group under the pseudonym Satoshi Nakamoto. It was created as a decentralized digital currency to operate without central banks or intermediaries, using blockchain technology—a transparent, immutable public ledger. The first block, known as the Genesis Block, was mined on January 3, 2009. BTC's limited supply of 21 million coins is hardcoded, making it deflationary by design. Over the years, Bitcoin has evolved from a fringe experiment to a global financial asset, widely referred to as “digital gold.” It has sparked the development of an entire cryptocurrency ecosystem, influencing finance, technology, and economics on a global scale.