WITNESS my hand and official seal. Signature. (Seal). A notary public or other officer completing this certificate verifies only the identity of the individual.How to write a Loan Confirmation Letter? Download this Loan Confirmation Letter template now! The certificate of acknowledgment (PDF) must be in the form set forth in California Civil Code section 1189. In this article, we discuss how to write a conformational letter, look at sample templates for formal and informal confirmation letters and share some tips. A notary public must use a certificate in substantially the following form in notarizing an attested copy. I am writing you today to request to receive the Sacrament of Confirmation.