Nice and interesting solution. This could be used for other purposes. I think your initiative driven by "police looking to ban addresses" is flawed.
People are looking to the wrong solution with all these invasions of privacy.
  1. IS NOT THEIR DAMN BUSINESS what are you doing with your own money.
  2. Nobody have any authority or jurisdiction over your own money (only if you consent to give it)
  3. Stop complying, damn it! They do what they do, because you comply as a slave. Tell them a nice FUCK OFF (as I did)
  4. Be a sovereign man not an obedient slave! Learn how to fight the system with their own instruments.
  5. Stop being scared and try for solutions to hide your activity. Confront the damn aggressor, be the lion not the scared rabbit. Use the affidavit, the most powerful paper in the world. They will all run to the hills when will see the affidavit.