Proofie (noun) /ˈˈprü-fē/ : an photo of oneself taken by oneself to verify a claim by that individual that they did something or were at a specific place.
A fact that proves, beyond any doubt, that you were not just paranoid when expectingthe worst from a person or particular situation.
Ok... I found him on the kitchen floor screwing the maid; that's much more than the amount of proofiness I ever expected from my unloyal and moronic husband.