> Nothing prevents anyone from opportunistically pre-generating and timestamping millions of permutations of fake kompromat and then selectively revealing the o

> Nothing prevents anyone from opportunistically pre-generating and timestamping millions of permutations of fake kompromat and then selectively revealing the one that turns out to be useful after the fact. If you're doing server-side timestamping and someone is sending millions of items, I think you just ban them. Apple accounts are free but not inexpensive.