WITNESS my hand and official seal. Signature. (Seal). A notary public or other officer completing this certificate verifies only the identity of the individual.The certificate of acknowledgment (PDF) must be in the form set forth in California Civil Code section 1189. It is to be completed with blue or black ink only. Fill out, sign, and affix your official seal to the Notary certificate. The wording requirements for acknowledgment certificates vary from state to state. The so-called "all-purpose" acknowledgment wording, as prescribed in. Any acknowledgment completed in California must contain verbiage exactly as appears above in the notary section or a separate acknowledgment form must be. How to fill out the California All-Purpose Acknowledgment Form?