What is a cornerstone requirement for a valid notarial act?

A cornerstone requirement for a valid notarial act is the personal appearance of the signer. This principle is fundamental to notary practice because it ensures that the notary can verify the identity of the signer at the time of the notarization. When a signer appears in person, the notary has the opportunity to assess identification documents and confirm that the person signing the document is indeed who they claim to be.

Additionally, personal appearance allows the notary to confirm that the signer is signing willingly and without coercion. This requirement is vital in upholding the integrity of the notarization process, as it helps to prevent fraud and ensures that the notarized document is legitimate.

In contrast, relying on written permission, personal knowledge of the signer, or a signature from a witness does not guarantee that the notary can confirm the identity or the voluntary nature of the signing. Therefore, personal appearance stands out as a critical requirement for ensuring the authenticity and legality of notarial acts.