Earlier quoted context omitted.
We already have this. It's called bitcoin. For offline payments, there's physical devices like opendime and potentially Chaumian mints like cashu.
opendime is a one time use bearer bond that costs ~$10 per device. It cannot be used like cash - you have to transfer the full amount - and it can break much more easily than cash. cashu is still online and its anonymity claims should be taken as suspect given that no cryptocurrency has managed to achieve it in practice. So to summarize: Bitcoin only really works online, offline equivalents are more fragile and can’t…
>offline equivalents are more fragile and can’t be used for the same use cases as cash, and anonymity continues to lag physical cash
OK, no argument there.