Thanks for one of the few literate answers. Everything that is written here about the need for fiat money during a nuclear war, and so on, only speaks of how far people are and really do not understand the danger facing our world and lack of education. What the hell bitcoins, if there is a nuclear explosion, billions will die.
Well, the fact people still go for so many shitcoins and ponzi sites shows the (low) level of education already. We don't have to go for higher topics, like the effects of nuclear bombs.
But I think that Obito's answer is incorrect. The size, type, quantity, technology .. all that would matter. Keep in mind that there were the bombs at the end of WW2, there were many tests, there was the accident of Chernobyl and although I don't deny that there were a lot of loses that should have been easily avoided if humans would have been smarter, the humanity has survived.
Of course that in the calamity zone we cannot discuss about bitcoin. There would be no infrastructure, but more important (and sadly), no living humans to use that.
So it's good to see what people understand by nuclear war. 1-2 nukes or all hell breaking loose. Of course, in the second scenario there may remain no advanced creature left on Earth.
But I see on the news that in the event of a nuclear attack, people are offered to stay at home, take off their outerwear if they come from the street, watch the news, and so on.
Well, since they cannot outrun the first wave of radiation, panicking wouldn't do much good, isn't it?
Of course, those smart enough and lucky enough to be far enough from the blast should move farther. This would be the survival of the smarter and more fit (a combination opposed to "the fittest" Darwin teaches).
And yes, they are still handing out iodine tablets. God, what nonsense.
Many don't even understand that after a certain age those tablets may do more bad than good.