[gfldex]

The best dollar bills are printed in North Korea. Forgery (but not fraut) becomes the default with crypto. You can create money without a government charter. However, it is to expensive for the forger to make a profit.

With fiat book money any payment processor (banks, CC, paypal) can create dept and thus money. We have to hold a gun against their heads and never look away to make sure that they don't cheat. Crypto solves that problem.

Please note, that you asked for solution. Crypto is creating way more problems then it solves. The VISA Network is processing 2G transactions per day. With crypto you can be happy if you get beyond 100k per day. There is better reasons to burn fossil fuel, etc. pp.