Within ten (10) days of receipt of the transcript of proceedings on said investment certificates, the Attorney General of Oklahoma shall examine and approve or disapprove all of the proceedings of the Board and all resolutions passed and actions taken by it in connection with the authorization, issuance and sale of such investment certificates and shall, if he finds such investment certificate proceedings and sale to be constitutional and lawful, execute his certificate and file the same of record in the office of the Secretary of State of Oklahoma, which said certificate shall read substantially as follows:

I have examined all proceedings had in connection with the issuance of the Water Resources Investment Certificates in the aggregate principal amount of $________, dated ______, authorized and sold pursuant to ____________, and find said proceedings and sale to be constitutional, lawful and regular in all particulars and that said investment certificates will be valid obligations of the Water Resources Board. Unless suit thereon shall be brought in the Supreme Court of Oklahoma within thirty (30) days from the date of this certificate, said investment certificates shall be incontestable for all purposes.

Upon the filing of such certificate, investment certificates issued pursuant to proceedings so examined by the Attorney General shall be incontestable for all purposes upon the expiration of thirty (30) days from the date of such certificate, unless suit be brought in the Supreme Court of Oklahoma prior to the expiration of said period. A facsimile of such Attorney General's certificate shall appear on each investment certificate so issued. Failure of the Attorney General to approve or otherwise act upon such proceedings as required herein shall, for all purposes, be deemed an approval of such proceedings and a waiver of the requirement for his certification. In the absence of an express certification, the thirty-day period for the filing of suit in the Supreme Court of Oklahoma shall commence upon the eleventh day following receipt of the transcript of proceedings in the office of the Attorney General. The Supreme Court of Oklahoma is hereby vested with exclusive jurisdiction over any litigation involving the validity of any investment certificates issued under the provisions of Section 1085.33 of this title.