Cryptocurrency, the United States regulatory gaps

A Cambridge Center for Alternative Finance study quantifies Americans using cryptocurrency like Bitcoin in three million.
In the United States so far only 23 states and the District of Columbia have begun to regulate the matter. New York and California, with regard to taxation, have issued guidelines on digital currency exchanges.
Emma Beyer on Bloomberg explains the different models applied:
– New York Model: focuses on the value of the transferred Bitcoin to determine the tax base of sales and not on the list price of the asset
– California Model: calculates sales tax using the list price of a resource and not the value of Bitcoin
– Other models: most state laws deal with money exchanges