adfgnionio

In the case of supply chain management, you need a trusted central authority regardless. Who ensures the sensors are honest? A computer can't do that. It has to be a legal contract between the truck company and a central authority, backed up by the dreaded guys with guns.

>but who owns the database? And who enforces the contract? And who owns the actual data?

The answer is the same to all three questions: the Chinese government.

>A trusted authority with legal obligations of honesty.

It doesn't even need to be that trusted. You can stipulate in the contract that they must stream the log to you and then scream bloody murder if they try to monkey with anything. A blockchain is just a trendy write-ahead-log.

You could do this on pretty much any database I know of, but it's a kind of dumb idea.