California Code, Probate Code - PROB § 13102

(a) If the decedent had evidence of ownership of the property described in the affidavit or declaration and the holder of the property would have had the right to require presentation of the evidence of ownership before the duty of the holder to pay, deliver, or transfer the property to the decedent would have arisen, the evidence of ownership, if available, shall be presented with the affidavit or declaration to the holder of the decedent's property.

(b) If the evidence of ownership is not presented to the holder pursuant to subdivision (a), the holder may require, as a condition for the payment, delivery, or transfer of the property, that the person presenting the affidavit or declaration provide the holder with a bond or undertaking in a reasonable amount determined by the holder to be sufficient to indemnify the holder against all liability, claims, demands, loss, damages, costs, and expenses that the holder may incur or suffer by reason of the payment, delivery, or transfer of the property. Nothing in this subdivision precludes the holder and the person presenting the affidavit or declaration from dispensing with the requirement that a bond or undertaking be provided and instead entering into an agreement satisfactory to the holder concerning the duty of the person presenting the affidavit or declaration to indemnify the holder.