Government Code §27391.
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(e) When a signature is required to be accompanied by a notary's seal or stamp, that requirement is satisfied if the electronic signature of the notary contains all of the following:
(1) The name of the notary.
(2) The words "Notary Public."
(3) The name of the county where the bond and oath of office of the notary are filed.
(4) The sequential identification number assigned to the notary, if any.
(5) The sequential identification number assigned to the manufacturer or vendor of the notary's physical or electronic seal, if any.