Patrick, do we also run up against the issue of people laying themselves open to sanctions if they take intermediate steps to avoid these provisions - such as purchasing something with BTC they have mined but then selling their purchases?  As the original source of the BTC isn't a "serious crime" or predicate offence (which is key in relation to how FATF defines money laundering), then it's hard to argue such a strategy is money-laundering per se and yet my instinct is that taking such steps could well be an offence in its own right (especially if done repeatedly).