Verification and authentication of the document
Authentication of the document basically means that an official, usually called a notary, certifies that the document was signed by a specific person. The notary identifies the person signing the document and attaches a notary seal with notarized deed to the document. In this way, any third party can be sure that the signature of the document is real and not forged. This service is called a notarized signature. However, you must be aware of the risk that the signing party does not know the contents of the document.