Bitcoin is a decentralized cryptocurrency that was created in 2009 by an unknown person known as Satoshi Nakamoto. Bitcoin is considered the first widely used cryptocurrency and is characterized by its secure blockchain technology. Bitcoin is used for online financial transactions without the need for intermediaries, such as banks. Bitcoin has a volatile value but has become a popular investment. Bitcoin is mined using powerful computers to solve complex mathematical equations. Bitcoin has revolutionized the world of finance and information technology.