"virtual currency" is correct and usable in written English.
You can use it when referring to a type of currency that exists solely in digital form, for example, "Bitcoin is a popular virtual currency."
The virtual currency isn't impervious to determined government snooping, however.
A virtual currency would not need an intermediary.
The euro has been a virtual currency since 1999.
Trust has become the pinnacle of virtual currency.
None of the major virtual currency exchanges are currently registered.
How do you create your own virtual currency?
Are blockchains used only for recording virtual currency transactions?
Could be used potentially as a basis for virtual currency.
This suggests the need for further research to reconcile the contradiction between presenting fair virtual currency exchange rates and achieving low fluctuations of virtual currency exchange rates.
IR-2014-36, IRS Virtual Currency Guidance : Virtual Currency Is Treated as Property for U.S. Federal Tax Purposes; General Rules for Property Transactions Apply.
For the past three years, the euro has been a virtual currency.
