Under Real Property Law §306, a certificate of acknowledgment or proof must include:

AI Explanation

The certificate must capture the legally material facts. Real Property Law §306 requires the officer to state all matters required to be done, known, or proved on the taking of the acknowledgment or proof, together with the name and substance of each witness’s testimony, and the subscribing witness’s residence if applicable. By contrast, a bare signature block alone would not satisfy the statute.