Minn. Stat. § 550.22
When a sale of real property is made upon execution, or pursuant to a judgment or order of a court, unless otherwise specified therein, the officer shall execute to the purchaser a certificate containing:
(5) If subject to redemption, the time allowed by law therefor.
Such certificate shall be executed, acknowledged, and recorded in the manner provided by law for a conveyance of real property, shall be prima facie evidence of the facts therein stated, and, upon expiration of the time for redemption, shall operate as a conveyance to the purchaser of all the right, title, and interest of the person whose property is sold in and to the same, at the date of the lien upon which the same was sold.