I agree that is a good quality of modern money, but there were other models before.
For example in the island of Yap, there are huge Rai stones that are static and the people just agreed who owned each stone when they traded. They achieved consensus by trading and changing ownership with witnesses or in public.
The above public consensus system makes the stones transferable, very much like the tones of gold that are stored in the bank of England and The Fed in NY. They are not actually moved, but change owners all the time by using a certificate system.
I agree that is a good quality of modern money, but there were other models before.
For example in the island of Yap, there are huge Rai stones that are static and the people just agreed who owned each stone when they traded. They achieved consensus by trading and changing ownership with witnesses or in public.
https://en.wikipedia.org/wiki/Rai_stones
The above public consensus system makes the stones transferable, very much like the tones of gold that are stored in the bank of England and The Fed in NY. They are not actually moved, but change owners all the time by using a certificate system.