Cal. Code Civ. Proc. § 1311
Any person transmitting money or other property to the Treasurer or Controller under the provisions of this title shall, at the time of such transmittal, furnish written notice thereof to the Controller, setting forth the amount of cash transmitted, the nature and description of the personal property other than cash transmitted, the name and last known address of the person entitled to such property or for whose benefit such property is transmitted, a reference to the specific statutory provision under which such property is transmitted, and if such property represents the proceeds of an estate of a decedent, or an unclaimed amount payable pursuant to an allowed and approved claim against such an estate, the name of the decedent, the county and court in which probate or escheat proceedings, if any, were held, the number of the action, if any; and, in the case of all classes of property so transmitted, such other identifying information available from the records of the person making such transmittal, as the Controller may require.
Ca. Civ. Proc. Code § 1311