No secret, the US sold itself off, when the chose to eliminate the gold standard that backed up the dollar. Much of the dollar is owned by foreigners. Gold Silver, Copper will never let you down
Patience’s lad. The miners used scales. How about trading your metal for real currency, thats worth an equal amount, and using that? Beyond that, I don’t have a clue. Gonna be interesting to see what gives in the next 10 years