oh i forgot to make the argument on your last comment:
"In fact, though a wonderful piece of mathematical invention, it is
quite useless, like all good art...to paraphrase Oscar Wilde... :-). "
its a peice of art for sure, but id say its far from useless. compare the
cost of making a bank transfer from Any given bank in spain to
a random bank in Thailand as an example. I really dont know how much it
would cost, but i can tell you without even looking up the cost of bank
fees that a bitcoin transfer would be cheeper to do, and likely much