I didnt see that yet

I didnt see that yet

You dont like contracts in general over nostr

Or you dont like them because you think they'll be insecure?

Main thing that a block/time chain gives you is a verifiable history so that if two people try to change something at the same time, it provides a tie breaker to see who went first.

That means that the contract cant be settled in one way, then later change its mind.