Streets and Highways Code § 10416
CHAPTER 5. Levying and Collecting the Assessment
The tax collector shall pay the redemption money to the person holding the original certificate of sale and shall require that the person to whom the redemption money is paid surrender the certificate and give a receipt for the money so paid. Upon redemption of any parcel of land the tax collector shall enter the fact and date of redemption upon the duplicate certificate of sale for that parcel of land.