Indeed, common forum etiquette is to use the search before posting questions... but that just rewards the people that don't follow the rules
A less conventional idea, if OC can limit sales to just those people with linked forum accounts, then post all the usernames of the buyers on a forum thread here. Everyone that buys one has to then post a pic of the card in their PC within a week, then again a month later. Anyone that fails will then face vigilante justice from the rest of the forum. Or maybe I'm taking it too far...
Without notable manpower (personpower if we're being PC?) at the OCuk end, then there just isn't a foolproof system. Even the FE cards and the checks (which I believe are manual) that they are supposed to have are flawed, I've seen a few people bragging that they managed to get a 3080 and a 3090 on the last drop