Countries like china if they start redeeming their Dollar Reserves for Gold now, US doesnt have enough gold reserves to pay back.

The total mined gold is somewhere around 2,08,000 tonnes max amounting max to 15 trillion dollar around maximum

And federal reserve does not own any gold, US Treasury does. https://www.federalreserve.gov/faqs/does-the-federal-reserve-own-or-hold-gold.htm

As of 2019, the vault housed approximately 497,000 gold bars, with a combined weight of about 6,190 tons. ( 0.44 Trillion )

Total Gold reserves of all countries combined is around 32414 tonne ( 2.3 trillion )

This above link gives an estimated 90.4 trillion total broad money supply

So it is 90.4 trillion paper money against 2.3 trillion of Gold reserves

So effectively i think the value of gold is at least 39 times than it is today

Read more in my article at https://bit.ly/dollarhyperinflation