A cryptocurrency is defined as a digital currency built with cryptographic protocols that make transactions secure and difficult to counterfeit. The most important feature of a cryptocurrency is that it is not controlled by any central authority: the decentralized nature of blockchain theoretically makes cryptocurrencies immune to old forms of government control and interference. Cryptocurrencies make it easier to conduct any transaction because transfers are simplified through the use of public and private keys for security and privacy purposes. These transfers can be made with minimal processing fees, allowing users to avoid the high fees charged by traditional financial institutions. However, the latest news about cryptocurrencies indicates that they are devoid of a central repository, a balance of digital cryptocurrencies can be annihilated by a computer failure, a hack, and other unexpected events.