Cal. Evidence Code § 1530

(a) A purported copy of a writing in the custody of a public entity, or of an entry in such a writing, is prima facie evidence of the existence and content of such writing or entry if: (1) The copy purports to be published by the authority of the nation or state, or public entity therein in which the writing is kept; (2) The office in which the writing is kept is within the United States or within the Panama Canal Zone, the Trust Territory of the Pacific Islands, or the Ryukyu Islands, and the copy is attested or certified as a correct copy of the writing or entry by a public employee, or a deputy of a public employee, having the legal custody of the writing; or (3) The office in which the writing is kept is not within the United States or any other place described in paragraph (2) and the copy is attested as a correct copy of the writing or entry by a person having authority to make attestation. The attestation must be accompanied by a final statement certifying the genuineness of the signature and the official position of (i) the person who attested the copy as a correct copy or (ii) any foreign official who has certified either the genuineness of the signature and official position of the person attesting the copy or the genuineness of the signature and official position of another foreign official who has executed a similar certificate in a chain of such certificates beginning with a certificate of the genuineness of the signature and official position of the person attesting the copy. Except as provided in the next sentence, the final statement may be made only by a secretary of an embassy or legation, consul general, consul, vice consul, or consular agent of the United States, or a diplomatic or consular official of the foreign country assigned or accredited to the United States. Prior to January 1, 1971, the final statement may also be made by a secretary of an embassy or legation, consul general, consul, vice consul, consular agent, or other officer in the foreign service of the United States stationed in the nation in which the writing is kept, authenticated by the seal of his office. If reasonable opportunity has been given to all parties to investigate the authenticity and accuracy of the documents, the court may, for good cause shown, (i) admit an attested copy without the final statement or (ii) permit the writing or entry in foreign custody to be evidenced by an attested summary with or without a final statement. (b) The presumptions established by this section are presumptions affecting the burden of producing evidence.