A cryptocurrency is a digital or virtual currency that uses cryptography for security. A cryptocurrency is difficult to counterfeit because of this security feature. A defining feature of a cryptocurrency, and arguably its most endearing allure, is its organic nature; it is not issued by any central authority, rendering it theoretically immune to government interference or manipulation.
A cryptocurrency is any kind of peer-to-peer digital money powered by the Blockchain technology. Since Bitcoin’s appearance in 2009, hundreds of new cryptocurrencies (often called altcoins) have been created, all of which offer different advantages and disadvantages compared to Bitcoin. The Blockchain itself is based on the principles of cryptography, hence the name “cryptocurrencies”.