[svara]

So are you suggesting that shipping companies, their customers, customs and middlemen should be mining a cryptocurrency? Or that they should record their interactions on a blockchain running on a peer-to-peer network of random miners around the world?

Sorry, I just don't see that. There's laws, governments, clearing houses that have allowed untrustworthy parties to work together for... ever. And if they need a database, surely there's going to be a more pragmatic solution?