Not especially simple to buy contraband using dollars electronically, over the internet. If we assume those contraints, there are existing solutions that actual

Not especially simple to buy contraband using dollars electronically, over the internet. If we assume those contraints, there are existing solutions that actually work without as much immediate interference. A dollar replacement with zero additional benefits (like those mentioned above) seems like the exact "solution without a problem" that existing "blockchain" tech was pretending to not be. TL;DR - this won't work!