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.
A contract for deed, also known as a bond for deed, land contract, or installment land contract, is a transaction in which the seller finances the sale of his or her own property. In a contract for deed sale, the buyer agrees to pay the purchase price of the property in monthly installments. The buyer immediately takes possession of the property, often paying little or nothing down, while the seller retains the legal title to the property until the contract is fulfilled.