State of Washington. 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. A Washington notary acknowledgment form is used to officially authenticate a signature on a legal document. This 5-step guide will teach you how to notarize a document that requires an acknowledgement (the most common notarial act). Download a notary acknowledgment form in PDF or Word format. 060)​​ Given under my hand and official seal this _____ day of _________, 20____. If there is no signature, watch the signer sign the document. 4. Record the notarization. Electronic signature and the address on the letter must match the address on the application.