The blockchain gives a provable accountability to people who choose so. Obviously that completely contradicts anonymity. However that may be very usefull.
And yes, i´ve been trying to advocate that, but it really seems creating an alternate chain for "restricted" purchases is the better way to go.
Do you think it actually matters how much a "coin" is worth if that "coin" is the aquivalent of "allow one purchase" of "restricted good" (be it a weapon, medicament, whatever).
That coin can be signed by the transmitter. Geez, it doesnt even matter if its premined. If it just allows you to purchase things online you usually couldnt.
Dont get me wront. Bitcoin would have been a really cool thing. Well, if it had come *before* Paypal etc.. We already have an online payment system.
Costing a whole lot more (3% of the sale plus ~30 cent fixed vs. ~5 cent), and being a nightmare for merchants because of conflict resolution by default going in favor of the customer.