Sooo...how important are manufacturers hull ID numbers??

[3 Squids]

So all that has been going on with my green boat I really haven't paid much mind to the details. But today I was messing with it a bit and realized that I no longer have a hull ID on the transom. I know while he was working on it he had taped over it and wrote on the tape "do not sand" But it appears when he gelcoated it filled up and now I can't even tell where it was.

Am I looking at trouble now? When I've been checked by marine police and USCG in the past they always compare it with my registration. How screwed does this make me?