And one person with an interest in getting them into the chain is better than 1,000 people with no such interest.
So, what would be needed is that the merchant "client" recognizes those timed transaction, stores them and retransmits them when the time is due, right? How can this be achieved?
You can cancel it at any time.
Is there a mechanism that assures that when I cancel the timed transaction, and the merchant has stored it and retransmits it, it's still cancelled?