"Once the mechanics lien form is complete, the state of New York requires that the lien is notarized in order to be valid." If you swear under Oath to a Notary Public, you have made a solemn Oath under the penalty of perjury. No oath appears on the lien so my question is: Now that it is notarized, does the lien now meet the definition of being a subscribed written instrument given that the lienor is swearing such that, if swearing falsely with intent to mislead a public servant (a county clerk), he is committing perjury? New York Penal Code Article 210, et seq. Second-Degree: A person is guilty of perjury in the second degree when he swears falsely and when his false statement is (a) made in a subscribed written instrument for which an oath is required by law, and (b) made with intent to mislead a public servant in the performance of his official functions, and (c) material to the action, proceeding or matter involved.