What is Crypto currency?
Virtual currency can be used as a representation of value for goods and services, and can be used by an unspecified number of users through the internet. It exists without the presence of a public issuing body such as a central back, nor any regulators, and can be exchanged for currencies such as Yen, Dollars, Euros, and Renminbi, at specialized exchange centers. It is said that there are over 600 types of virtual currencies in existence.
Virtual currency/Digital currency/Crypto Currency
Crypto currency list