La. Stat. tit. 38 § 1674.7
The said drainage certificates shall be signed by the president and secretary of the board of commissioners for, on behalf of, and in the name of the district and under the seal thereof. Any interest coupons shall be signed with the facsimile signature of the said officers, and before delivery thereof, the certificates shall be registered in the mortgage records of the parish in which the district is located as to the serial number or numbers, amount, rate of interest and dates due. Each of the said certificates shall bear the following endorsement, viz.:
"This certificate registered in the Mortgage Records of the Parish of ________________, on this the ______ day of __________, 19__.
_____________________________________ Clerk of Court and Ex-Officio Recorder of Mortgages, Parish of __________, Louisiana."
La. R.S. § 38:1674.7