43,237,137,396 Bitcoin (BTC) is a decentralized digital currency founded by Satoshi Nakamoto in 2009, operating on blockchain technology. It is not issued by a central authority but is maintained collectively by global nodes through a 'mining' process, ensuring transaction transparency and immutability. The total supply of Bitcoin is capped at 21 million, which gives it scarcity, and it is often regarded as 'digital gold.' Its price is highly volatile and influenced by multiple factors including market sentiment, regulatory policies, and macroeconomic conditions. In recent years, institutional investors and nations have shown increased interest in it, but it also faces challenges such as energy consumption and compliance scrutiny. It is one of the most influential crypto assets in the world.