Cryptocurrency is a digital currency created with encryption protocols that make transactions difficult and fake. The most important feature of a password is that it cannot be controlled by any central authority. Cryptocurrencies are simplified using public and private keys for money transfers, security and privacy purposes. These transfers can be made with minimum transaction fees so that users can avoid the high fees charged by traditional financial institutions. At the same time, it offers the opportunity to make transfers with very fast and low transaction fees in money transfers between countries.