Well if things have gotten that bad, an apocalyptic scenario is one where the Internet may not even be a functioning network any longer. On the other hand "IF" shit gets so bad, like you say then markets will collapse and coin value might plummet into the ground.  IT would be easy to hide, and hard to steal.


Here is some ammunition for your sales Pitch  in 2036 there is the likelihood that the earth could get hit by an asteroid that we share a path around the Sun with. The Asteroid Apophis crosses the Earths path twice a year, and comes close to the Earth every 6 years. It is expected to pass safely "JUST UNDER OUR ORBITING SATELLITES " in 2029 and the NASA near Earth Object Program has not calculated the possibility of impact, for 2036. They said it was calculated to be a safe pass in January 2013, then 3 months later recanted and said "WE DON"T KNOW"

 Recovery if any, is harder to calculate.