The easiest way to detect if something is real money or fake money is to check whether it can perform the primary function of money, which is to act as a means by which parties exchange goods and services in the market. Real money is capable of performing this function, while fake money is not.
~snip~
FED prints dollar when US government request for it. Dollar is backed buy debt.
Any other currency is backed by dollar.
Tell me how long this system you expect to survive?
This is irrelevant for this topic.