Autograph Authentication?

hey all! i going to pick up Resident Evil Requiem, the Deluxe edition for Switch 2 today, and my friend said if i give them the steelbook, i can pay to get it signed by Nick Apostolides (for anyone who doesn’t know, that’s Leon Kennedy’s VA) when they go to a convention next week because he will be there. does anyone have any good recommendations for authentication services to get the autograph certified and appraised? i’m new to physically collecting games, so i didn’t know if anyone has done this before. any help is appreciated!