@jonoiv
Gold has nothing to do with this, and FYI fiat isn't backed by gold or any tangible assets since 40 years. Some currencies are 'defended' by a certain amount of gold in currencies wars, but that is the extend of it 'backing' anything these days.
It's backed by the ability to prove a debt can be ultimately paid in gold as assumed by the credit agencies.
Currency is backed by assets, at least my currency is (GBP). our QE was backed by the purchase of assets. When called to pay debts they are settled in gold.
You are mixing a lot of stuff together... FIAT isn't backed by anything (once, it had 1-1 parity with some amount of gold). International trading do use gold, and national currencies (not backed by gold anymore) are used in non-intuitive ways when nations trade with each other (because any nation can print its own currency at will). So gold is still the big thing in international trade, even bigger than in the past. But it is more used as a weapon 'in-being' now (like a fleet that doesn't leave harbor). Once, gold flowed among nations on a daily basis (for example, the City of London was born with the role of gold-exchange hub for the nations). Now it is stored deep underground, like a nuclear bomb.
Yes, I get that to a point, they can print a currency at will, and produce as much as they want. But, I strongly disagree, that fiat is not backed by anything, the value will be reached by the market based on the creditworthiness of the country. I'm not suggesting barclays bank has xxx pounds sterling, and can back it with xxx pounds of gold. However, the assets of the bank or the country for that matter should balance. QE don't create more money, it's like having a large pizza and cutting it into 10 slices instead of 8 slices. There may have been billions of extra £'s made out of thin air, but each pound almost overnight lost value.
Im not suggesting gold moves in tankers between states. I am saying that the value of a currency is backed by the bank or country ability to produce assets in the form of gold if required.
And going back to the crytpo / fiat discussion, fiat can't be stored digitally. Because fiat stored in a bank account is just a ledger, of a promise of an asset (gold).
Guess we will need to agree to disagree.