Use cryptocurrency in order to circumvent the sanctions of another country.
How? No exchange who wants to do business in the West will touch it. It's not as if you can run a national economy selling to dweebs in other countries on Localpetrocoins.
The only way this would be a potential possibility is if we had pure crypto economies, but we're not within a billion miles of that yet.
In trades between the countries, no exchange is required. Am I wrong?
Then, one exchange officially claimed to list Petro.
Third thing, Maduro said, all payments for petrol, including fuel for planes that will be bought in Venezuela's airports, will be paid in Petro. So, it's either Western air companies will not buy fuel while being in Venezuela (that's barely possible) or just stop flying there.
The main question is still on the list, $6 bil is billion miles away from the amount required for all the operations that Petro is supposed to be used for