It doesn't help here any more than existing solutions. How exactly is a distributed collection of blockchain miners meant to validate (e.g.) a sensor that is be

It doesn't help here any more than existing solutions. How exactly is a distributed collection of blockchain miners meant to validate (e.g.) a sensor that is being used to show that a shipment of chilled meat was always at 3'c or cooler? Answer: they can't. The only part of a blockchain that helps verification/provenance is its append-only nature, and that feature is widely available with much simpler mechanisms.