1. A bank, either acting as a fiduciary or holding securities as a managing agent or custodian, including a custodian for a fiduciary, may deposit securities in a federally regulated clearing corporation as provided in section 633.89, and in addition may deposit securities, the principal and interest of which the United States or any United States department, agency, or instrumentality either has agreed to pay or has guaranteed, in a federal reserve bank.
 2. The records of a depositing bank at all times must identify the persons on whose behalf securities have been deposited in a federal reserve bank. An interest in deposited securities may be transferred by entry on the books of the federal reserve bank without physical delivery of the securities. A depositing bank is subject to rules adopted by the superintendent of banking, with respect to state banks, and by the comptroller of the currency, with respect to national banking associations. On demand by the owner, a bank acting as a managing agent or as a custodian shall identify in writing the securities deposited in a federal reserve bank for the account of the owner. On demand by any party to the accounting of a bank acting as a fiduciary, the bank shall identify in writing the securities deposited in a federal reserve bank for its account as fiduciary.
 3. This section applies regardless of the date of the agreement, instrument, or court order under which the bank was appointed.