Why they’re not decisive
Watermarks can be cropped, cloned, or recreated. Metadata can be stripped by platforms or edited with simple tools. They are useful signals, not verdicts.
Practical tips
- Cross-check multiple signals and look for inconsistencies.
- Request originals where feasible—not screenshots or re-uploads.
- Consider the upload path; social platforms often rewrite files.
Provenance
If present, Content Credentials (C2PA) may offer stronger provenance. AuthentiScan will surface a summary when detected.