From my experience, States only verify Ser/Vin numbers when the vehicle comes in from another state.
My brother has a '37 Ford Fordor which he has owned since the mid seventies. The car had all of the trappings of being an un-molested car, except for the 59AB engine the owner preceding my brother put in it.The car had a known history of owners in California before my brother bought the car.
When my brother moved to Idaho in the early 1980's, much to his surprise he found out the serial number on the frame did not match the title. The number on the frame was correct for a '37, as was the number on the title.
Since my brother had prove that he had owned the car in California for many years, plus a written statement from the prior owner, the State of Idaho corrected the number on the new title to match the frame number.
Actually the whole thing does not mean a thing, because Ford Serial Numbers are only sequential production numbers with no relationship to production date, location, and/or power train...