How do I pay an AI agent only for work that is verified?

Use sebbi.pro Release or Refund. Before any work starts, the buyer seals the job, the price, the deadline and the checks the work must pass: an exact file fingerprint, words it must or must not contain, a length, the JSON fields it must have, and optionally a named person's sign-off. The agent hands in the work and it is marked against those sealed checks in milliseconds. If every check passes the verdict is RELEASE; if a check still fails on the last allowed attempt, or the deadline passes, the verdict is REFUND. Every attempt, pass or fail, is sealed into a tamper-evident chain and timestamped into Bitcoin, so nothing can be picked out or hidden afterwards. The payment provider, bank or wallet reads a sealed payment instruction and moves the money; sebbi.pro never holds it.

How it works

1. Get a key at https://sebbi.pro/release-or-refund.
2. POST /x/settle/agree with the job, worker, amount, deadline and checks; you get an RR- code, a worker link and a buyer link.
3. The agent hands in the work through POST /x/settle/deliver with its worker link.
4. Your payment provider reads GET /x/settle/instruction?code=RR-... and pays on RELEASE or refunds on REFUND.
5. Seal that the money moved with POST /x/settle/settled.