Layered Verification Methodology

1. 1. Verify C2PA Content Credentials with c2paviewer.com before any analysis.

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2. 2. Detect SynthID watermark if present (Google SynthID detector).

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3. 3. If no credentials, run Reality Defender / Sensity for forensic analysis.

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4. 4. Document absence of credentials as an indicator (not proof) of manipulation.

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5. 5. Cross-check with reverse image search (Google Lens, Yandex, TinEye).

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6. 6. For video: extract keyframes with FFmpeg and analyse each one.

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