Polarik has done the research and given us the proof. If you want to be ignorant and ignore the proof, then that is your choice. The birth certificates posted by 0bomba and factcheck.org are fraudulent forgeries.
0bomba stated in his book that he had his original birth certificate in a box of things that he had gotten from his mother a long time ago. If so, why was a new one posted?
Proof of what? Have you seen him or anyone photoshop embossing onto a photograph of a crease in paper? Look at the link I provide to factcheck bc5 and tell me whether you think that (a) the paper was embossed, then folded, then photographed or (b) the paper was folded, then photographed, then embossing was photoshopped onto the crease.