[netsharc]

Geez, no? Sanctions work only if the sanctioning entity has power. If the US govt sanctions you, they can tell all banks in the world that if they touch your (virtual) money they'll be sanctioned too. If some podunk dictatorship no one did business with announced "Any bank doing business with xxpor will be barred from working in our country!" then many banks will probably say "Fine, you're a tiny economy that we don't have anyone that does business with a business in your country anyway, so you can take that sanctions and shove it".

Ironically paper money is the way to "escape" sanctions, because anyone around the world knows that that 100 dollar bill can be exchanged for goods and services. And it doesn't even have to involve a bank, just another person who recognizes the value of that paper, in a chain of transactions. Depending on the hassle you may need to pay more..