Remember that If the crisis gets really bad even gold and silver won't help you.
As for cryptocurerrencys only after a crash and burn in the system will make digital money possible but under government control becaus
they have the guns and tanks.
At one point olive oil may be more precious then gold and silver.
The economy crisis may start after the German election next year. The fact that Macron was elected only postponed the crisis this means that the Europe crisis will be much worst.