Couldn’t you just deal in commodities? There’d be strong incentive to create parallel commodity-moneys by private parties issuing credit certificates for commodities for one-off deals and the like. Plus, any large inflation will give bitcoin a huge boost.
Ultimately I think the world’s mixed economies will falter under massive inflation due to continually shunting debt onto the next generation.
TPTB figured this would be fine, they could always default or w/e, deal with it when it happens. But they never thought something like Bitcoin might exist.
I love how technology foils the plans of the would-be global planners.
I think they’d love to engineer worldwide economic chaos in order to push through something like a world government, to cast the UN or w/e as the economic savior. All they need, they think, is a great depression-like event and a monetary solution that can only work if implemented by an authority with transnational power. With that, they can establish a world-government.
But if we libertarians build parallel structures that actually work, their driving their own economies towards ruin may end up actually driving the masses to our working institutions! Completely foiling their scenarios for increased power.
It all rests on this historical epoch right now. Time is precious. We’ve got to get libertarian solutions up and running before they can establish a one-world governemnt. We can’t sit back on theory anymore and wait for the education strategy to work.
I favor the parallel strategy, building working libertarian solutions to the problems people demand government to solve in seasteads and on the net. Bitcoin is a good example of a parallel net-based libertarian solution. Being on the net, it’s trans-border. And being crypto, it’s completely decentralized with no governing authority. Awesome.
Now how can we similarly transborder and net-ify dispute resolution, law, and policing?
Dispute resolution is pretty easy and basically done already: see www.Judge.me
As for law, there are people working on computational law and the like… 
And policing? How about drones, perhaps? The internet of things? If every item had a unique identifier and a net-presence, we could run title to them as an international database, making theft nearly impossible, for you’d have a complete title history of every object.
Then we need an area to put them all toether and lead the way, which is what I see seasteads achieving.
…and here I’ve gone waaay off topic 