[doonesbury]

Agree. There are consequences if the notary lies. If bad data is posted to the blockchain ... Well ... So what? That's why I asked the original poster of scenario what the end receiver's recourse is if he gets a car with too many miles? Arguing about blockchain and what it did or was supposed to do will be immaterial by then.

[sebmellen]

As I responded to you in another comment, the recourse is that the transporter is not paid. This is laid out in a legal contract which references the timestamping system.