Sorry for the alarming headline.
Google reports a
single result for "hardcopy of the blockchain". So I figured we might find such a phrase useful. I have looked a little into the possibility that all copies of the blockchain could be destroyed by an EMP (very unlikely, it seems), or by a solar flare (more likely, but still seems remote).
Would there be a few heroes who could produce tens of GBs of data with the special properties of the blockchain that make it uniquely identifiable in the event such a catastrophe occurred? Do I want to be one of them? Sure, why not. I need like 10 DVDs and a day or three to burn them.
Honestly, though, I was hoping for some replies that say "Check out [link]" where such an effort is already being undertaken.