California Code, Probate Code - PROB § 2893

(a) The written statement provided pursuant to Section 2892 by the financial institution shall be in the form of an affidavit signed by an officer of the financial institution and the officer shall provide his or her name and title in the affidavit.

(b) The affidavit required by this section is subject to disclosure under the circumstances described in subdivision (l) of Section 7480 of the Government Code under the California Right to Financial Privacy Act (Chapter 20 (commencing with Section 7460) of Division 7 of Title 1 of the Government Code).

(c) This chapter does not apply to any trust arrangement described in subdivision (b) of Section 82 except paragraph (4) of that subdivision relating to assets held in a Totten trust.

(d) The affidavit described in Section 2892 is not required to be filed in a proceeding more than once for each asset.  However, all assets held by the financial institution may be listed in a single affidavit filed with the court.

(e) If the affidavit and any accompanying information to be filed pursuant to this section also contains the ward or conservatee's social security number or any other personal information, including financial information regarding the ward or conservatee which would not be disclosed in an accounting, an inventory and appraisal, or other nonconfidential pleading filed in the action, the information shall be kept confidential and subject to disclosure to any person only upon order of the court.