This is one of the problems with cryptocurrencies though. Consumers are unlikely to accept a system where they can't contest charges, either through a trusted l

This is one of the problems with cryptocurrencies though. Consumers are unlikely to accept a system where they can't contest charges, either through a trusted large institution (e.g. Visa) nor through the courts. I haven't heard an explanation yet of how to solve that without layering on central authorities, which undermines the decentralization that's supposed to be crypto's #1 advantage. This article has a good explanation of that concern, among others: https://hackernoon.com/ten-years-in-nobody-has-come-up-with-a-use-case-for-blockchain-ee98c180100 https://hackernoon.com/ten-years-in-nobody-has-come-up-with-...