This would be handy if i wanted to travel but didnt want to lug all my metals around with me, trouble is would some bar in outer mongolia want to exchange beer for digits on a computer ?
Isnt this just a reworking of the bankster buisness plan , Exchange real assets for illusional digital crap ? Except in this case you wont be able to exchange the crap because no one outside the small cryptocommunity understands what they are dealing with.
Show that mongolian bar tender your gold and he will probably sell you his most prized possesions, his Yaks or horses maybe even his missus ( thinking about it, she would be first on the list)