Sure, basically using blockchain to record ownership of things that change hands besides currency, which at the end of the day is really what blockchain is. It creates actual value and generally doesn't require building a Dyson sphere around the sun to enable. For example, tracking stock share ownership, that should already have all been moved to blockchain and the 2 in T+2 should refer to minutes, not business days. A little more work, but I think it would be spectacular if we could eliminate the paper volumes that track land ownership with blockchain. Right now land ownership records are as archaic as it gets, and the transaction costs in both time and money for recording a sale, getting title insurance... are all just a deadweight loss. Perfect kind of problem that blockchain could solve. There all kinds of niches with similar ownership and chain of custody issues that blockchain would be perfect for, for example tracking organic commodities, or FSC lumber, or grain fed beef, or WI cheese or Champagne (that actually comes from Champagne). There's lots of opportunity to create real value, while if they're honest with themselves the vast majority of crypto currency evangelists are just trying to pump their speculative investment and if they come up with a benefit it's done post hoc to make themselves feel better about it rather than the other way around.