Evidence system

When you interact with something in a way that would trigger a snitch, you also leave behind a block tag that expires after 7 days.

When someone does something to analyze the tag that's left behind, it doesn't tell them the name of the player, only their qualia (list of words, maybe? or maybe colors?). A player's qualia is based on their statistics. So two players who only ever mine would have very similar qualias, but a miner and a builder would have very different qualias. Amelorate the workbench thief would have a very unique qualia, and be personally identifiable because of that.

Maybe there'd be a skills system involved? The more practiced you are at analyzing qualia the more details you'd be able to see? Like to a newfriend the floating points behind the qualias would be rounded 100s, but an expert would see quailias rounded to 0.001