Certified
Part of speech: verb
Definition: To attest to (a fact) as the truth.
Example sentence: I am, of course, directly descended from Brian Boru, the last king of Ireland, a fact certified by my mother and therefore beyond dispute. But as everybody else with a drop of Irish blood in his carcass is also a guaranteed descendant of the old billy goat, I am not overly arrogant because of this royal strain.
Credentialed
Part of speech: verb
Definition: To furnish with credentials