C.R.S. § 32-4-531: Cancellation of paid securities.

Whenever the treasurer of the district redeems and pays any of the securities issued under the provisions of this part 5, he shall cancel the same by writing across the face thereof or stamping thereon the word "Paid", together with the date of the payment, sign his name thereto, and transmit the same to the secretary of the district, taking his receipt therefor, which receipt shall be filed in the records of the district. The secretary shall credit the treasurer on his books for the amount so paid.