Wis. Stat. § 75.04: Redemption receipt and entries.

Upon the redemption of any lands subject to a tax certificate by payment to the county treasurer, the treasurer shall execute to the person so redeeming a receipt specifying the land redeemed and the amount of the redemption money paid on each parcel separately. The treasurer shall enter on the tax certificate the information required under s. 74.57 (4) (d).