Expiring money
How about expiring rate?
What If Money Expired? | NOEMA
A long-forgotten German economist argued that society and the economy would be better off if money was a perishable good. Was he an anarchist crank or the prophet of a better world?
https://www.noemamag.com/what-if-money-expired/?utm_source=join1440

Freigeld
As part of the theory of Freiwirtschaft, Freigeld is a monetary unit proposed by Silvio Gesell.
https://en.wikipedia.org/wiki/Freigeld


Seonglae Cho