[harrygallagher4]

I met a blockchain researcher this summer, I was asking her what sort of stuff she was working on and she started talking about supply chains. Like drexlspivey mentioned there are a whole host of problems with relying on data from the real world. My first thought was just... why do you need an immutable ledger for that? Not to throw buzzwords out, but why not just store transaction data in a database that scales well? If you're willing to spend all of these resources on developing some insane database for your supply chain you must have some real trust issues with your suppliers. I've never worked in an industry like that but I feel like being able to trust your suppliers is pretty important, and provided that you do trust them you could just use a conventional database for all of this and save tons of time and effort.

[delinka]

We decided a couple decades ago that an 'immutable ledger' would indeed be useful. And you don't have to expend tremendous amounts of time an energy creating such a thing. See Hash Chain[1] at Wikipedia, and notice the second sentence.

1 - https://en.wikipedia.org/wiki/Hash_chain