WITNESS my hand and official seal. Signature. (Seal). A notary public or other officer completing this certificate verifies only the identity of the individual.An acknowledgment is one of the most common types of notarial acts, but it often confuses Notaries. Here are 5 steps to performing an acknowledgment. An effective donor stewardship program acknowledges a gift in writing in a timely, accurate, and gracious manner. Every gift to UC San Diego is acknowledged. I would like to express my deepest appreciation to all those who provided me the possibility to complete this report. Acknowledgment Samples. O Comprehensive list provided to CDPH of County of San Diego providers to add to myCAvax. If there is no signature, watch the signer sign the document. 4.