California Code, Government Code - GOV § 50631

Upon receipt of the first money in the treasury applicable to their payment, the treasurer shall set apart the amount necessary to pay the registered bonds and coupons.  He shall give notice by registered mail to the owner or holder of the registered bonds and coupons, at the address last filed, stating that he is ready to pay them.  The bonds and coupons shall be paid from such money in the order of their registration.