HerdProofSaved presentation demo
SAVED EVIDENCE-CHECK EXAMPLE

3 conflicts to review

This demonstration deliberately declares September 25 for a photo captured on September 26. The original local checks also flagged reuse from earlier demo submissions. These saved findings are not new checks.

File
46472379c810.jpg
Declared capture date
2023-09-25
Photo EXIF date
2023-09-26 13:47:22

Boundary: Jalogny pasture · example (1.76 ha). This is separate from the 0.28 ha world example.

One-use submission token

Consistent

Issued by this server, bound to this boundary and capture date, and consumed once. This does not prove a fresh capture.

Exact file reuse

Conflict

These exact bytes were already submitted.

View evidence
{
  "prior_submission_ids": [
    "581831cf827388a2405befff",
    "d80f9b5503f7e7affac04b72",
    "a950981c4874cd7807bae976",
    "11ca5b78447a5a0f28426b94",
    "0c614d537353cccba8d88c89",
    "f3e3e28f32a4c6d9e3832a51",
    "becf2a9e109b8c1f5c46a414",
    "904fce8471a51a8af16f3b50"
  ],
  "scope": "this local demo database",
  "sha256": "0c3f846a459e5b7fd6cf49dfbe5e2880feab8392a5e095ee3bb88411398f897c"
}

Same decoded pixels

Conflict

The decoded image already exists, including when metadata or the filename changes.

View evidence
{
  "orientation": "raw decoded pixels before EXIF rotation",
  "prior_submission_ids": [
    "581831cf827388a2405befff",
    "d80f9b5503f7e7affac04b72",
    "a950981c4874cd7807bae976",
    "11ca5b78447a5a0f28426b94",
    "0c614d537353cccba8d88c89",
    "f3e3e28f32a4c6d9e3832a51",
    "becf2a9e109b8c1f5c46a414",
    "904fce8471a51a8af16f3b50"
  ],
  "sha256": "e7906beedf39b7aa3e54cfadd835416ae24c31c486545d24adb0c7029ffecd19"
}

Camera GPS vs farmland

Consistent

Supplied camera GPS is inside the selected boundary.

View evidence
{
  "boundary_margin_m": 10,
  "distance_to_boundary_m": 19.1,
  "inside": true
}

Declared date vs photo

Conflict

The photo's EXIF date conflicts with the declared capture date.

View evidence
{
  "declared_camera_local_date": "2023-09-25",
  "exif_camera_local_time": "2023-09-26T13:47:22",
  "source": "editable EXIF DateTimeOriginal; no timezone inferred"
}

Capture time vs receipt

Inconclusive

No explicit EXIF timezone; exact comparison with server time is unavailable.

Whole-property coverage

Not tested

A camera point does not establish photographed area, a complete property sweep, or a unique herd total.

Evidence details and trust limits
  • Findings flag inconsistencies; they do not prove fraud or authenticate editable metadata.
  • This is a single-user local demo. Duplicate matching is limited to its retained submissions.
  • No proof of freshness, complete coverage, ownership, or persistent animal identity.
  • Report verification compares with this server's saved record, not an independent signature.

The original local server verified this record during preparation. This hosted copy does not provide live server verification.