A thing made of digital information that you can transmit across the world just like that, with no intermediary party in between, and when it arrives at it's destination it remains the thing itself, not a copy of the thing- or a representation of the thing, it's indelibly there and only there when before it was here and only here. If you find anything interesting in that concept then who knows what use you might put it to or what you might build on top.
I'm not convinced.
All digital information is copied. "Cut and paste" is just a metaphor, the original data is just deleted, rather than left in place as with copy+paste.
Doubtless cryptocurrencies have some clever system in place to ensure that each unit remains unique and uncloned, but let's be real here, protection against counterfeiting isn't as important as cryptocurrency advocates make it out to be. For any currency, the anti-counterfeiting measures merely have to be good enough to maintain confidence, rather than having to be absolutely perfect.
What we do know is that millions of people consider this function valuable enough to be willing to pay a significant amount of "proper money" for it.
That doesn't establish anything. There are plenty of people willing to pay silly money for all sorts of things.
If all it is is a thing that acquires more and more value over time because people want to buy it and hold on to it and only sell it for stuff they really want- that there already makes it a better way of transporting value across space and time.
Until the point where you need a Cray supercomputer to mine even a tiny fraction of a coin, and then you run into the old problems that plagued other currencies based on a limited commodity, like the gold standard.
Which would explain why Libertarians' love this kind of shit so much - goldbuggery seems to be an endemic mental disease amongst those types.
Worlds full of widgets, innovations and enhancements that you or me can't see the point of, but our failure to understand someone elses value of it doesn't mean that the world is therefore forbidden to consider the thing any further. I wouldn't worry about the advantages you can't see, those are unimportant to the outside world that gets on with chasing the thing, try to worry about things like the effects of it being there in the first place and what the implications are and maybe work backward from that.
When someone tells you that they're having trouble imagining the practical applications for the latest techno whizz-toy that you think is worthy of attention, it does no good to just tell them to imagine harder.
I'm not a crypto geek. I haven't been following this shit as closely as you so obviously have. My experience is limited to hearing about people using cryptocurrencies to buy drugs, weapons and contract killings, as well as reading the occasional news stories about people who've had their coins stolen from them.
You've advanced this idea that cryptocurrencies could be useful as a means of moving value across time and space, but frankly there are already loads of financial instruments and services tailored to do just that, so that isn't good enough.
Also, if the antique vase turns out to be a fake, at least you'll still have something nice looking to decorate your home with. If a cryptocurrency goes tits up (oh hai there DogeCoin), you're left holding a load of meaningless data representing wasted energy. Call it my bias towards the tangible, material world in which I actually live, where all the ultimate off switches are located.
The energy-use issue is I think a good example. Besides bitcoin isn't anonymous, it's pseudonymous... there's Monero or standard paper/metal cash as far as anonymity is concerned.
The energy issue is a point against BitCoin, and my point in bringing up the anonymity angle was to point out it's limited usefulness to people who aren't usually considered scum by wider society.