No one can predict what exactly will happen in the future. In the event of a nuclear war, they can turn off electricity and the Internet, no currency will have value.
Not entirely true... People will resort to commodity trading like it was done 1000's of years ago. A packet of cigarettes or a slab of chocolates will
be the new currency. You have to remember, most people have generators and backup power and alternative methods like solar power to
generate electricity... and the Blockchain is saved on harddrives globally. My company have extensive redundancy built into their IT infrastructure,
so they will survive, if something like this happens. The question is.... will be still be here to worry about this?