Original documents... if they exist.
They can be released for inspection via a court order.
Hawaii Revised Statutes §338-18 Disclosure of records.
(a) To protect the integrity of vital statistics records, to ensure their proper use, and to ensure the efficient and proper administration of the vital statistics system, it shall be unlawful for any person to permit inspection of, or to disclose information contained in vital statistics records, or to copy or issue a copy of all or part of any such record, except as authorized by this part or by rules adopted by the department of health.
(b) The department shall not permit inspection of public health statistics records, or issue a certified copy of any such record or part thereof, unless it is satisfied that the applicant has a direct and tangible interest in the record. The following persons shall be considered to have a direct and tangible interest in a public health statistics record:
9) A person whose right to inspect or obtain a certified copy of the record is established by an order of a court of competent jurisdiction;
My personal favorite way to have inspected the original Obama birth certificate would have been via:
5) A person having a common ancestor with the registrant;
It turns out that Obama shares a common ancestor with the 2012 Tea Party endorsed U.S. Senate candidate for the Kansas Republican Party, Dr. Milton Wolf.
Dr. Wolf said that his cousin Barack Obama was the worst president in American history and because of their common ancestor, [Thomas Creekmore McCurry (1850–1939)], Dr. Wolf would be eligible to inspect or receive a certified copy of the Obama birth certificate.
https://en.m.wikipedia.org/wiki/Milton_R._Wolf