[SlowRobotAhead]

"As part of Blockchain Week NYC, NYCEDC and GrowNYC co-sponsored a hackathon on May 12-13, challenging technologists to use blockchain technologies to create solutions that improve trackability and transparency of the City’s GrowNYC food supply chain, tracking food from farm, to warehouse, to retail outlet, to consumers, especially those in our underserved neighborhoods. "

That's definitely not what a decentralized database is needed for. Any centralized SQL database could this much better and efficiently.

If you need to look for a use, it's not useful for you.