Cal. Bus. & Prof. Code § 17916
Presentation for filing of an original fictitious business name statement and one copy of the statement, with proper identification, accompanied by a completed and notarized affidavit of identity, if required by the county clerk, and other documents required in accordance with Section 17913, payment of the filing fee, and acceptance of the statement by the county clerk constitute filing under this chapter. The county clerk shall note on the copy the file number, the date of filing the original, and the date of expiration and shall certify and deliver the copy to the registrant or the registrant's agent. A county clerk may use a remote identity proofing process as described in subdivision (f) of Section 17913 for purposes of this section.
Ca. Bus. and Prof'l. Code § 17916