Bitcoin (BTC) is the first and largest cryptocurrency in the world, created in 2009 by Satoshi Nakamoto. As a decentralized digital asset, BTC operates without a central bank or intermediary, using secure and transparent blockchain technology. Bitcoin is often called "digital gold" because its supply is limited to only 21 million coins, making it a popular store of value. The price of BTC is highly volatile but tends to increase over the long term, making it both an investment asset and a primary trading instrument. Bitcoin pioneered the digital financial revolution, offering an independent alternative to the conventional banking system. With the largest market capitalization, Bitcoin holds significant influence over the movement of the entire crypto market.