You mean like a multi sig wallet? Has been a thing on ethereum for about a decade now. There are also a variety of systems that allow trustless social wallet recovery and other nice creature features that are required in the real world. The programmable nature of ethereum makes these sorts of systems readily buildable.
But its not bitcoin, so somehow its the shitcoin and the glacially frozen development environment that is bitcoin is what all the get rich quick cryptobros obsess about. I will never understand.
Such things don't count for much if they're not in use. The trick will be getting people to use them effectively. It's more of an education problem than a tech problem.
Also it's not clear that that would work. If I got a call:
> They're gonna kill me if you don't sign this transaction.
I'd probably sign it rather than let my friend die to prove a point to the bad guys that you don't kidnap people on FooChain.
Ok, so you make one of the other parties someone who has a fiduciary duty but not an emotional one. "We don't negotiate with terrorists" is a common enough phrase.
I still don't think it's enough. Then you just figure out who the fiduciary is and kidnap their kid instead. It's gotta be something where the coins are useless once stolen because you can't fake a convincing enough history for anybody to risk touching them. And not because maybe the cops show up, but because the recipient is equally concerned about finding people to accept their coins. The value of a given token has to be tied to the acceptability of its externalities such that a theft is just a destruction of value, not a reappropriation of it.
Or at least that's the only way I can see it working. It's gotta be based on consent, not scarcity.
But its not bitcoin, so somehow its the shitcoin and the glacially frozen development environment that is bitcoin is what all the get rich quick cryptobros obsess about. I will never understand.