(a) On the demand of a fiduciary employing a bank to hold a security as custodian under this subchapter, the bank shall identify in a written certification the securities it holds for the fiduciary.
(b) On the demand of a party, or the attorney of a party, to an accounting by a bank holding a security in the name of a nominee under this subchapter, the bank shall identify in a written certification the securities it holds as fiduciary.