That would be interesting. Have a chess bunker somewhere with 100s of games against a variety of opponents. I think at first there would be some nerves but over time the statistics would become clear. Perhaps there could be a 10 game burn-in.
For chess, maybe your rating doesn't mean anything until you've gone through a "verified" bunker-play tournament that operates as a sort of baseline for your ability at all subsequent games until the next one.