this is dumber than snot whenever you are in time of Crisis you go with the simplest means of Commerce not the most complicated..it why you hard monetary systems gold over paper
Depends on the “crisis”...in a total societal melt down (EMP, nuke, etc.) then .22 LR, toilet paper, food, gasoline, etc. are the “investments” of choice. If you are in Venezuela and your life saving are being inflated away, then Bitcoin/Ethereum is the temporary “currency” of choice....easy and fast way to transfer money (into other currencies like $$ or Swiss Francs).
https://bity.com
https://www.coinbase.com