It seems like an excellent use case for the blockchain due to the nature of the commodity. It's basically a contract of sorts changing hands. Could be done effi

It seems like an excellent use case for the blockchain due to the nature of the commodity. It's basically a contract of sorts changing hands. Could be done efficiently, you could even track what shares voted for what or instruct your blockchain stocks to vote a certain way (smart contracts). This is a bit off topic but I'm very curious. How would one go about trading consumable items via the blockchain? The entries for the items would have to move to a consumed state somehow which seems really hard to track. Maybe it's trivial and I'm missing something? For arguments sake let's say a barrel of oil or something like that.