Our giveaway Software Provider is checking for Multi Accounts using different metrics. So no cheating is possible.
My question is more about how the participants verify that accusations against them are not false positives, or that the organizer won't abuse this clause to scam someone? I know the chance is low, especially if you've successfully done this before, but more transparency doesn't hurt IMO. It might even increase your reputation, even though you're not a casino or running something similar.
Personally, I'm a bit disappointed with the current market where transparency becomes rare, whether in exchange, a casino, or somewhere else.