Cryptocurrencies are a real world example of Anarcho-Capitalism, a term used for the first time by Murray Rothbard in the 20th century.

If you're wondering how a world with cryptos might look like, take a look at this, https://en.wikipedia.org/wiki/Anarcho-capitalism.

This is the closet theory we have, regarding cryptos and their real world application. Murray Rothbard should be considered one of us.

Too bad this man is long dead.