Okla. Stat. tit. 63 § 3216
Before any bond shall be issued and delivered by the University Hospitals Authority, a certified copy of the proceedings for the issuance thereof, together with any other information which the Attorney General of the State of Oklahoma may require as the Bond Commissioner of the State of Oklahoma, shall be submitted to the Attorney General. If the Attorney General shall find that such bonds have been issued in accordance with law, he shall approve such bonds and execute a certificate to that effect. The Attorney General shall file such certificates in the office of the State Auditor and Inspector, and the certificates shall be recorded in a record kept for that purpose. All bonds approved by the Attorney General, and issued in accordance with the approved proceedings, shall be valid and binding obligations of the Authority and shall be incontestable for any course from and after the date of such approval.
Okla. Stat. tit. 63, § 3216