Bitcoin ($BTC ) is the most popular cryptocurrency in the world, operating on decentralized blockchain technology. It was created in 2009 as a response to the financial crisis and the need to create an alternative to the traditional banking system. BTC enables fast and global transactions without intermediaries, making it an attractive means of payment and store of value. Its limited supply – 21 million coins – contributes to the growing interest from investors. Despite high price volatility, Bitcoin is considered by many as 'digital gold'. It is increasingly accepted by companies and institutions. Its future depends on regulations, market adoption, and technological development.