Cal. Evid. Code § 1282

A written finding of presumed death made by an employee of the United States authorized to make such finding pursuant to the Federal Missing Persons Act (56 Stats. 143, 1092, and P.L. 408, Ch. 371, 2d Sess. 78th Cong.; 50 U.S.C. App. 1001–1016), as enacted or as heretofore or hereafter amended, shall be received in any court, office, or other place in this state as evidence of the death of the person therein found to be dead and of the date, circumstances, and place of his disappearance.