Development of the banknote began in the Tang Dynasty during the 7th century, with local issues of paper currency, although true paper money did not appear until the 11th century, during the Song Dynasty.
A contract typically does not have to be notarized. A notary public (or simply notary) provides an acknowledgment that the signature appearing on the document is that of the person whose signature it purports to be. There is a requirement that some documents be notarized, such as a real property deed.
The act of notarization the signatures on a document can only by a legal public notary. Requirements for obtaining this title vary from state to state; however, it usually involves paying a fee, taking an oath, and being sworn in by the respective stateâs Secretary of State.