generated clip standing in for an instrument
SYNTHETIC MEDIA, generated by Veo — see media/fraud/PROVENANCE.json. The most dangerous form of this attack, and the reason the corpus contains generated video at all: a clip submitted for the step that is supposed to end in a torque figure. The other two generated cases fail on identity alone; this one is what a technician who wants to skip a fastener would actually produce, and the clip deliberately keeps the wrench barrel out of frame so it carries no setting either. The Skeptic's job is unchanged — this belongs to no machine — and the architecture's answer to the rest is that `measured` is carried by a paired instrument and never by any photograph, generated or not.
The answer conformed to the contract and every assertion held.
System instructionassembled from the contract schema, not hand-written
You have not seen the Inspector's conclusion and must not guess it. Answer only: does this evidence belong to THIS job, THIS machine and THIS moment? Doubt is your job. If you cannot establish identity, dissent. Return JSON with these fields: - belongs (boolean, required): False dissents. Dissent is a deterministic escalation trigger: the step does not pass and a named person is raised the same day. - confidence (number, required): 0 to 1. - rationale (string, required): What in the image, the asset history or the embedding distance decided it. - mismatch_kind (one of asset | time | reuse | scene | none, null when it does not apply): reuse means this evidence appears to have been submitted before. - prior_capture_ref (string, null when it does not apply): When mismatch_kind is reuse, the earlier capture this resembles.
## The machine this evidence is claimed to be of
{
"asset id": "XYBER-07",
"type": "e-bike",
"make and model": "Segway Xyber",
"distinguishing marks": [
"a single spiral cable wrap on the right fork leg, the left leg bare",
"unpainted light grey front mudguard"
],
"known history": [
"2026-05-02 front pads replaced",
"2026-07-30 front tyre replaced",
"2026-08-12 front brake service opened"
],
"what recognising the model does NOT establish": "Confirming the make and model is not identifying this unit. The shop runs several machines of this exact model and colour, so a frame that would look the same photographed on any of them establishes nothing about which one this is. Identity comes from the distinguishing marks above, from a prior capture of this same unit, or from something in the frame unique to it. If none of those is present and there is nothing to compare against, you have not established identity, and the contract tells you what to do then: dissent, and say what was missing."
}
## The job this evidence is claimed to belong to
{
"job id": "J-4471",
"procedure": "Front brake service \u2014 Segway Xyber v3",
"opened at": "2026-08-19T09:00:00Z",
"location": "Workshop, El Chalt\u00e9n"
}
## The capture as recorded
{
"kind": "video",
"created at": "2026-08-19T11:15:00Z",
"mode": "upload",
"surface": "browser",
"note": "upload means the file was chosen from storage and its stated time and place are unverified"
}## Evidence already on file for this machine These were captured on earlier jobs. They are here so you can tell whether the new capture is the same machine, and whether it is the same photograph.


## The capture in question This is what was just submitted.
{
"belongs": false,
"confidence": 0.95,
"rationale": "The submitted video shows a dark grey/black brake caliper being serviced, whereas the prior evidence on file for the asset XYBER-07 clearly shows it is equipped with distinctive red brake calipers. This indicates the video is of a different vehicle.",
"mismatch_kind": "asset",
"prior_capture_ref": null
}Assertions pin the part of an answer that decides something, never the whole object — exact-matching a rationale would fail the first time it was reworded, and a suite that cries wolf is abandoned inside a day. Where the reasoning is checked at all, it is to catch an agent that reached the right verdict for no reason.
| asserted | about | what happened | |
|---|---|---|---|
| ok | is_false | belongs | is False |
| ok | mentions_any | rationale | found ['different', 'grey'] |