As someone who was born and raised in Hawaii around the same time as Obama supposedly was...and has...others who were born during the same year...and who has an original HI birth certificate, I can say that the only ways he (Obama) could actually have a legit HI birth cert. is that he either HAS one and can produce it for verification against anyone else born in HI at that time who most likely will have theirs or the State of HI still has the original paper and ink used and can either reproduce one or fake it. Dating processes can verify the paper and ink as to the acurate date of production.
I just looked at mine the other day and they are distinctive to say the least in a variety of ways so he must either prove it or get out of the race. Time will tell.