Actually no, and fuck you!
You go on 'head and believe what Nostradumbass there says. I figured you would.
Nostradamus never wrote about America. He was writing about France in 1547. He was an astrologer. His 'predictions' were of a general nature and cryptically written, that could apply to almost anytime. It was like he predicted it would rain somewhere, but cryptically. Since it's always raining somewhere, his 'prediction' appears to be genuine for devout believers in this crap.
Gold has been in use for thousands of years. It was the first widespread currency because a way was found to easily check it's purity and weight (using touchstones). From that point on, various metals have been used as currency over time, usually stamped as coins for easier handling. The dollar itself was originally a unit of weight (nominally 1/20th of an ounce of fine gold).
The gold itself was the currency. It was the medium of exchange (making it a representation of value), and using standards like units being equivalent to 1/20th of an ounce, it had a unit of account. In other words, gold had the two characteristics of all money (fiat or not). It held value (you could use it as a medium of exchange), and it acted as a unit of account (you could set a price with it).
Gold also held a certain amount of intrinsic wealth, since it is also an industrial metal, used to make jewelry, leaf plating of statues and other items, made into fine wire and used for plating in electronic components, and, of course has been stamped into some truly beautiful coins, some of which are collector's items now.
Silver has also been used as currency, particularly in Germany and Israel. It also held intrinsic wealth, due to it's use as an industrial metal. Usually when silver was used as currency, it was coined. Silver is harder to check for purity by your average Joe. Counterfeiting with silver is easier to conduct since it readily forms alloys with zinc or copper.
In America, silver is still used as currency, in the form of coin (dimes, quarters, and half dollars). Because the dollar itself has fallen so far, these coins are no longer pure silver. They are now 'sandwiches' with a copper center. The material is made by cold welding using explosives, then coins are minted from that.
Copper has also been used as a currency, but because it corrodes and discolors, it's use has been limited. Copper is an industrial metal, however, used as a building material, wiring, electronics, and jewelry.
Aluminum has also been used as a currency (at one time it was used to coin pennies in America!). Before the discovery of processes to cheaply obtain aluminum from ore, it was considered a precious metal (at one time worth almost as much as gold and worth more than silver). Now it's a beer can. The first canned drink was for beer and was introduced by Coors in 1959. Aluminum is used to manufacture drink cans, aircraft, cars (and especially their engines these days!), as a building material, in electronics, food wrapping and handling equipment, and even explosives.
Even paper has been used as a currency. When one deposited gold in their bank account, the bank would issue a 'receipt' for it (often with decorative artwork on it) that acted as a bearer note anyone could use to get that gold out of that bank again. People would trade the notes instead of the gold itself. Fiat currency is almost always paper or even in electronic form these days.
The dollar today is no longer a unit of weight. It is an electronic currency with some paper versions. Today, the dollar is a fiat currency. It has no intrinsic wealth. It is, however, currency. It is has value (it can be used as a medium of exchange), and acts as a unit of account (you can set a price with it).
Like all fiat currencies, the natural tendency is inflation, since such currency is typically issued by governments that are basically broke. They owe more than they can pay and still operate. By issuing fiat currency, they can continue to operate and even expand, all while continuing to borrow (from anyone dumb enough to loan them money!). Eventually, fiat currency collapses (people no longer generally accept it and turn to another currency). The government may issue a 'newer dollar' (where a 'newer dollar' is worth 100 'older dollars' or some such redefinition, but the loss of faith in the dollar is still there, even if somewhat mitigated. This kind of thing has happened to the Real, the peso, the drachma, the Mark, the yen, the ruble, the franc, and the yuan. The dollar is NOT immune.
Restoring faith in a fiat currency is not easy nor quick. It takes time. A long time.
The dollar is already nearing this crisis. People are already looking around for another currency. As soon as one is accepted, general acceptance will occur almost overnight, creating a major crisis for any government using fiat currency. Governments fail this way. At the very least, they are forced to dissolve many government programs and services.
Anyone dependent on welfare from government are especially hit hard during such times. Today, in America, that welfare extends into public education, agricultural welfare, social security and medicare/medicaid, welfare to homeless and drug users, and of course all the criminals depending on scamming various welfare programs.
In other words, when it happens, it ain't gonna be pretty.