Cal. Commercial Code § 7103

(a) This division is subject to any treaty or statute of the United States or regulatory statute of this state to the extent the treaty, statute, or regulatory statute is applicable. (b) This division does not modify or repeal any law prescribing the form or content of a document of title or the services or facilities to be afforded by a bailee, or otherwise regulating a bailee’s business in respects not specifically treated in this division. However, violation of such a law does not affect the status of a document of title that otherwise is within the definition of a document of title. (c) This division modifies, limits, and supersedes the federal Electronic Signatures in Global and National Commerce Act (15 U.S.C. Sec. 7001, et seq.) but does not modify, limit, or supersede Section 101(c) of that act (15 U.S.C. Sec. 7001(c)) or authorize electronic delivery of any of the notices described in Section 103(b) of that act (15 U.S.C. Sec. 7003(b)). (d) To the extent there is a conflict between the Uniform Electronic Transactions Act (Title 2.5 (commencing with Section 1633.1) of Part 2 of Division 3 of the Civil Code) and this division, this division governs.