From this:

A college instructor who worked as a senior elections clerk for the city and county of Honolulu in 2008 is making the stunning claim Barack Obama was definitely not born in Hawaii as the White House maintains, and that a long-form, hospital-generated birth certificate for Obama does not even exist in the Aloha State...

..."I had direct access to the Social Security database, the national crime computer, state driver's license information, international passport information, basically just about anything you can imagine to get someone's identity," Adams explained. "I could look up what bank your home mortgage was in. I was informed by my boss that we did not have a birth record [for Obama]."

It's still unclear whether he had access to all possible records, so this isn't proof one way or another.