but you need to know the address(es) of those you might want to communicate with - or a "backwater shared address".
If there would be any "forking" to be done - or modification to the main branch, I think it would be the inclusion of such a channel.
Interesting idea. But, I really think most scenarios where it might be really useful might preclude its use.
But with some additional effort we might arrive at something disaster resilient.
*generator, solar, or manual crank powered laptop.
*bitmessage client with pre-defined emergency channels
*bitmessage spitting a stream out to a radio transmitter that broadcasts the blockchain via morse code.
*radio reception for same
Imagine such a setup - and someone travelling up or down the East Coast of the US (just as an example). As they passed through different reception zones, they would merge blockchains, and act as a crypto-pony-express.
If nothing else - I think I have a budding scenario for a sci-fi short story.
=kewal=