C.R.S. § 38-13-404

(1) A holder required to file a report under section 38-13-401 shall retain records for ten years after the later of the date the report was filed or the last date a timely report was due to be filed, unless a shorter period is provided by rule of the administrator. A holder may satisfy the requirement to retain records under this section through an agent. The records must contain: (a) The information required to be included in the report; (b) The date, place, and nature of the circumstances that gave rise to the property right; (c) The amount or value of the property; (d) The last address of the apparent owner, if known to the holder; and (e) If the holder sells, issues, or provides to others for sale or issue in this state traveler’s checks, money orders, or similar instruments, other than third-party bank checks, on which the holder is directly liable, a record of the instruments while they remain outstanding indicating the state and date of issue.