A blockchain solves none of the issues you listed, though. You still need to transport it, most cryptocurrencies still have escrow solutions, and a blockchain i

A blockchain solves none of the issues you listed, though. You still need to transport it, most cryptocurrencies still have escrow solutions, and a blockchain is fundamentally a third party you have to trust (and the more established currencies are decidedly not instant). You can sell a piece of art instantly for cash if you wanted to, the problem is all the other logistics surrounding it.