Paperwork is only as good as the breeder that provides it.
Anyone with a computer and a camera can provide paperwork including unknown people.
I provide paperwork not really to prove anything but because I know it is easier for my customers to be able to re-sell their animals.
99% of the hets I have bought did not come with paperwork, the only one that I did buy (a long long time ago) and that came with paperwork never proved....go figure
Let's face it no one will jeopardize their rep for a $100 animal, het scams were big back in the day when hets were pretty pennies not anymore.