Might be worth something to create an AI summary of the actual documents that are behind the curtain. That way the Client can have some assurance of what the deliverables are. It's a nice ability for the escrow service to be a trusted third party to verify something is there that matches about what is expected. If you do it right, you can even have the LLM prepare the content, encrypt it, and you never even have access to any of that information.

Lecture on making sure you get paid: https://www.youtube.com/watch?v=jVkLVRt6c1U

I've been toying with it. Somehow my payment of 50$ was listed as 29$.