$BTC Bitcoin is a decentralized cryptocurrency that was born as an alternative to fiat currencies, such as the dollar or the euro, which are issued by governments and central banks. Unlike fiat money, Bitcoin does not depend on a central authority and has a limited supply of 21 million units, which aims to protect it from inflation. While fiat currencies can be manipulated through monetary policies, Bitcoin is based on a public and transparent blockchain network. Although it does not yet replace traditional money, it is increasingly accepted as a store of value and a medium of exchange in various global markets.