South Dakota Codified Laws — Title 10 (Taxation)
SDCL § 10-23-18 — Purchaser at sale entitled to tax certificate--Contents--Evidence of regularity of proceedings
The purchaser of a tax certificate sold by the treasurer for taxes is entitled to a tax certificate describing the real property, the sum paid and stating the time when the purchaser will be entitled to a deed. The tax certificate shall be signed by the treasurer and is presumptive evidence of the regularity of all prior proceedings.
Source: official text