I called Nick, the original Potcoin dev two weeks ago and we discussed this very issue. The Potcoin team is well aware of the legal issues surrounding crypto and River Rock dispensary in Colorado is taking a very cautionary approach to accepting cryptocurrencies for Cannabis. Once you start accepting crypto for Cannabis in a retail business, you are putting yourself under Federal jurisdiction as a money transmitter.
Then you are both wrong...money transmitter...that's laughable. The feds have nothing to do with Cann regulations or finance of that particular industry.
What we need is a lawyer to clarify the laws for us. Does anyone know a lawyer who can look into this for us?