[9000]

> Realtime mass surveillance of every party who receives money is isomorphic to realtime mass surveillance of everyone.

I don't believe it is.

For instance, imagine a closed system of three people: Alice, Bob, and Carol. Initially we start off with seeding both Alice and Bob $100 via Taler. We can see that because it is public. Then, we see that Carol receives $5. That is also public. Who gave Carol the $5?

If surveillance of money received is isometric to full surveillance, you should be able to answer this question, but clearly there is insufficient information, so clearly they are not isometric. There may be special cases where sufficiently large transactions can only have come from a small pool of wealthy transactors, but I bet this would be essentially meaningless in practice, and is absolutely not the same as equating the system to full surveillance of every participant.