Payments pursuant to §§ 44-8-16 and 44-8-17 may be proved by a written notice thereof verified by the affidavit of the purchaser, his agent, or attorney, stating the items and describing the premises, which may be recorded in the office of the register of deeds, and a copy thereof served upon the sheriff of the county, and from the date of such service the sheriff, before issuing any redemption certificate, must collect the full amount specified in such notice in addition to the amount which would otherwise be due in redemption from such sale, and pay the same over to the purchaser at such sale, or his assignee.
SDCL 44-8-18