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I said that the Petro,

may be the answer. I don't know as I haven't look at the white paper.

Having read this below I can see why there is a problem with the Petro

https://en.wikipedia.org/wiki/Petro_(cryptocurrency)

Petro (cryptocurrency)
The petro, or petromoneda, launched in February 2018, is a cryptocurrency developed by the government of Venezuela. Announced in December 2017, it is claimed to be backed by the country's oil and mineral reserves, and it is intended to supplement Venezuela's plummeting bolívar fuerte currency, purportedly as a means of circumventing U.S. sanctions and accessing international financing.

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