You fork bitcoin into a local currency. It might be some time before the world is back online anyway.

Why would anyone local agree to someone having more money than them post-apocalypsis?

I am just imagining a bunch of post-apocalyptic farmers in a faraway China suddenly becoming pure slaves when someone comes with a few million BTC from Africa. Isn't happening.

The only reason BTC would survive is if it would provide the means for inter-planetary-government-independent currency. But that's not going to happen since double-spend is only alleviated with a centralised (as in - globally available) blockchain.

I'm not arguing that it could work, just that the fork could technically function without the larger internet. What's really going on in TFA is the Bitcoin ponzi scheme has roped in a new group of suckers.

I'm actually kind of sad that I didn't mine a few myself back when I thought it was a passing fad...

I mined a few hundred.

Then I lost them while reinstalling Linux, and didn't think much of it. sigh

you would just need nodes to agree, you don't need the internet as we know it.

people have broadcasted bitcoin transactions via long range radio frequency before.

But has Bitcoin been run over LRRF before? And in a sustainable manner?

And why would anyone actually bother when they can just use something that doesn't require power to spend? Especially considering that international trade would be toast anyway.

The only reason you would be correct is if the internet existed, as "bitcoin transactions broadcasted over long range radio frequency" would be solving exactly the same problem internet solves.

So your point is invalid.

You're on to something, which is that I don't believe concepts like the internet actually die.

A big network of ISPs like what we have today? That could be destroyed.

Computers communicating to each other over long distances? I don't think it is hard - or so low priority to implement - that the disorganized nomadic doomsday scenario perpetuates itself for very long.