I'm trying to remember something about skydiving from 35-ish years ago, when one of my best friends in college taught skydiving on the side.
I believe there is an FAA database for skydivers. I do remember skydivers had to keep a log, and I believe that's an FAA requirement.
If there is there may be a public database through the FAA in Norman/Oklahoma City.
Of course this is a long time agom and things may have changed as to that database; but as best as I can recall there is a database, and it should have some sort of public FOIA (Freedom of Information Act) access.