Under the social credit system, they would not have that significance. Uncle would be the source of money, although he might provide it cheaply to the banks who could then loan it to their customers, and give Uncle a kickback. Banks would end up with no purpose other than maintaining checking accounts, and safe-deposit boxes. Having Uncle, who gives the orders, holding everyone's IOUs doesn't seem like a good idea. Obviously, a grim dilemma on which to be impaled, and an unnecessary one.
States are to pay their bills with precious metal coins.
Any government official found guilty of debasing the currency is to suffer death, according to the Coinage Act of 1792. The value of our money was to be its purity and weight. Thus, the dollar of silver was legal to tender for a dollar only until its weight, which was 416 grams when it left the mint, dropped to 409 grams. After that, it was valued in proportion to its weight. Those who recognize the problems inherent in our present system might do well to consider the Constitutional method.