I'd like to know which provider or method or algorithm any "legitimate" exchange is using to determine what's tainted or not. If they're going to operate in this space shouldn't they at least be transparent with that?
They could be transparent about it and make everything public. But are they going to? I seriously doubt that. I even tried to get them to talk about it and maybe reveal something in
What Do Centralized Exchanges Consider as Taint? But that didn't go so well. And that information is surely above the pay grade of a regular support agent.