> Sure, contract law. But why when there is a technical solution? I think I don't see any of the multiple trust relations solved in this case. Walmart still c

> Sure, contract law. But why when there is a technical solution? I think I don't see any of the multiple trust relations solved in this case. Walmart still can't trust the producer to itemize the physical product correctly. The producer still can't trust Walmart to not change the item already in the database (see mining discussion above). What trust relation do you have in mind, that is solved with this blockchain implementation, and that wouldn't be solved with a ordinary database with signed entries?