Wash. Rev. Code § 53.34.140
Prior to the issuance and delivery of revenue bonds or notes under the authority of this chapter, such revenue bonds or notes and a certified copy of the resolution, resolutions, or trust agreements authorizing such revenue bonds or notes shall be forwarded by the port commission to the state auditor together with any additional information requested by him or her, and when such revenue bonds or notes have been examined they shall be registered by the auditor in books to be kept by him or her for that purpose, and a certificate of registration shall be endorsed upon each such revenue bond or note and signed by the auditor or a deputy appointed by him or her for that purpose.
Revenue bonds or notes so registered shall then be prima facie valid and binding obligations of the port district in accordance with the terms thereof, notwithstanding any defect or irregularity in the proceedings for the authorization and issuance of such revenue bonds or notes or in the sale, execution or delivery thereof or in the application of the proceeds thereof.
RCW 53.34.140