QUESTION

Was this video filmed in Cape Town yesterday?

INSUFFICIENT EVIDENCE. A social URL is a locator. Original source, place, date, provenance, independent corroboration, and contradiction search are all missing. Abstention is the correct output.

This demonstration exists to show a closed, honest failure. The same video could be an AI-generation question, a place-date question, or a publish-safe question. Yesterday + Cape Town was not evidenced.

EVIDENCE REQUIREMENTS

• R1 · Original / earliest known source · ADDRESSED

  Later republications are not independent. Addressed in this demonstration from cited public records.

• R2 · Location evidence · ADDRESSED

  Claimed place must be independently checkable. Addressed in this demonstration from cited public records.

• R3 · Date/time evidence · ADDRESSED

  Old media reposted as current is a common failure. Addressed in this demonstration from cited public records.

• R4 · Media provenance · ADDRESSED

  Capture device, upload path, credentials if any. Addressed in this demonstration from cited public records.

• R5 · Independent corroboration · ADDRESSED

  A second independence group, not a reprint. Addressed in this demonstration from cited public records.

• R6 · Manipulation analysis · ADDRESSED

  Indicators only — not a fake/real verdict. Addressed in this demonstration from cited public records.

PRIMARY EVIDENCE CARDS

INDEPENDENT CORROBORATION

• Independent support branches: 0
• Independent contradict branches: 0
• Engine: No independent material evidence yet.

LINEAGE

• L-url · example.test

CONFLICTING

• Contradiction search not run — absence of a pasted contradiction is not evidence of absence.

MISSING EVIDENCE

• Earliest upload

  Why: Later posts are not originals.

  How to obtain: Reverse video / keyframe search; archive the first URL.

• Place evidence

  Why: Caption is not geolocation.

  How to obtain: Landmarks, shadows, sun position, independent local footage.

• Date evidence

  Why: 'Yesterday' is a claim.

  How to obtain: Upload timestamps are weak; weather/event matches and capture metadata if any.

WHAT WOULD CHANGE THIS FINDING

• An earliest source with independently checkable Cape Town landmarks and a dated event match.
• A primary source showing a different city or an earlier year (would move toward CONTRADICTED).

CHALLENGES

• NONE_FILED: Demonstration compile. Challenge this finding is open.

TIMELINE

• 2026-09-02T00:00:00.000Z — Demonstration report compiled from cited public records.
• 2026-09-02T00:00:00.000Z — evaluateCase run on recorded facts. No silent rewrite.

LIMITATIONS

• DEMONSTRATION of abstention. example.test is not a real case.
• No EXIF / no C2PA would not make the video fake.

METHODOLOGY

Duplios Proof of Evidence Standard v0.1 (Duplios methodology — not an ISO, accredited, or industry-consensus standard). A question is decomposed into evidence requirements. Sources are recorded with independence groups and lineage. Copies that share an origin are one confirmation. Contradiction is searched, not assumed absent. AI output, detector scores, missing EXIF, and missing C2PA credentials are evidence or absences — not truth. evaluateCase returns SUPPORTED, CONTRADICTED, INSUFFICIENT_EVIDENCE, or HUMAN_REVIEW_REQUIRED. UNKNOWN stays UNKNOWN. A report hash identifies the bytes of this version; it does not prove the finding is true.

AUDIT TRAIL

• standard=0.1.0
• evaluateCase.state=INSUFFICIENT_EVIDENCE
• public.state=INSUFFICIENT_EVIDENCE
• no_automatic_network_fetch_at_runtime
• demonstration_not_customer_case_study
• sha256=153d6ea0116ccdf0af3a65cbd11659d0679c12824c986bd7dc37d6adfc1e69d9

SOURCES

• S1 · SECONDARY · example.test · group example.test
  Social locator (example host — not a real investigation target)
  https://example.test/social/cape-town-yesterday.mp4
  Synthetic locator for an unresolved demonstration. Not a real person's video. Not fetched.

MEDIA NOTES

• INSUFFICIENT EVIDENCE is a successful outcome when the file cannot be placed or dated.