Picture a transaction your AI agent completed back in the spring. It's late summer now, and a customer is disputing the result. Your compliance team wants the audit log. A regulator is asking for the full chain of custody.
All you have is a line in your database. A line in a database doesn't prove much on its own. Proof means showing that the action really happened, that the record still matches what came back at the time, and that nobody has touched it since.
The same system that ran the action also wrote the record, with nothing sitting between the two to keep either one honest.
Every time one of your systems responds, it attaches a small, signed receipt to that response. Think of a sealed stamp that captures what happened and locks it in at the exact moment it happened.
The receipt tucks into a part of the message that other software already skips over. You can start using it without changing anything else or breaking what you've already built.
Once a record has a receipt, any later change to it is visible. Say someone edits a record after the fact, or a script alters it during a migration. The receipt stops matching, and a quick check shows it.\
The receipt is built so that anyone can confirm it's real. A customer who disputes a charge. An auditor, a year later. Someone reviewing an argument between two companies. Each of them can verify it on their own, with no login to your systems and no call back to your team. They run one quick check and get a clear answer.
That's what makes it useful in the moment that counts. Handing over a receipt and letting an outside party confirm it themselves holds up in front of an auditor or a court, and it reads in a format the people who run audits already know.
The same tool can pause before anything sensitive happens. When an agent moves money or deletes records, the action is held until a person signs off. That approval happens through a separate, secure step. It's tied to that one action and is set to expire, traveling with the receipt once the action goes through.
So your records show who approved it and exactly what they signed off on. For teams in regulated fields, that turns a plain audit trail into a way to control access in real time, all from one place.
The technology behind this is open-source and has been handed over to a neutral standards group, the Decentralized Identity Foundation. No single company controls it. No one can buy it up or wall it off from the people who rely on it. The pieces underneath are open standards your security and procurement teams can look up and check for themselves.
You get value the day you turn it on, whether or not your partners and customers do the same.
Run the systems your agents act on? Switching on receipts means any later tampering shows up right away. On the receiving end of those systems? Switching on receipts means any later tampering shows up the moment someone checks. Each step stands on its own, and each one makes the next easier.
Most everyday AI tools won't pick this up until a regulator or a major contract forces the issue. That's fine. You don't have to wait for them.
Two simple paths, depending on where you sit. If you run the systems your AI agents act on, start issuing receipts and publish a stable identity others can check against. If you build products that rely on those systems, start checking the receipts that come back and keep them with your logs. The receipt is the piece that an auditor will ask for.
Eager to learn more? If you want the full build — the three-step integration, the consent flow that gates write, charge, and delete tools, and the verification anyone can run from outside your systems — read the technical deep dive.
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Dylan Hobbs
KYA Founder, KYA-OS Author, and Founding Principal Engineer at Vouched.