More and more banks, companies and governments seem to explore how they can deploy blockchain technology in a useful way.
Just this morning I came across the news that Singapore is working on tokenising their currency:
http://www.trustnodes.com/2017/06/07/singaporean-dollar-tokenized-ethereums-blockchain-monetary-authority-singapore
I was talking to a co-worker earlier about how cryptocurrency might be able to stop or at least limit corruption quite effectively.
If your government actually fully embraces cc it becomes very easy for everybody to follow how the budget is used and you can audit it yourself quite simply. No need to trust some 'audit company' that is most likely owned by the brother-in-law of your president.
Another great use case we were thinking of are charities. The single most asked question before donating is always "How are you using my money? Are you using it effectively?" - if the charity runs fully on the blockchain it's again super straight forward to validate what happens to your money and see the impact of every cent donated!
What do you think? Can it stop corruption? What other use cases do you see?