$PTR is backed by oil assets and will be exchanged by its value in Bolivares.
The mechanism is not in place yet, simply because the Petro is not even active yet.
i think that part only concern to a venezuelan living in venezuela.
it doesn't make sense for a foreigner living in another country.
the venezuelan government don't pay interests to its international investors with the venezuelan currency (Bolivar).
I agree, but I understand that before committing the government must have solid reserves of crypto. They simply don't have that at the moment (no government in the world does, and this is something very innovative too). As i said, I believe this is something they can change later, either after the ICO or even in the next months or years.