Victor KuznetsovandClaude Opus 5.5 509ce633a3 Judge decoded C2PA manifests on their decoded strings alone ...

Extend the whole-word rule to every identity lookup. Once the reader has
decoded a manifest, no identity is re-derived from its raw bytes: not the
signer, not a signer-platform token, not the AI-tool fallback for the
generator, and not the SynthID vendor inference, in identify and in
metadata.synthid_source alike. The byte scans read the manifest store only
when the reader could not open it.

Claim-generator tokens match as whole words through one shared
claim_generator_word_platform (suno no longer matches Sunoco), for images
and video alike.

The verdict now reads SynthID from the decoded C2PA info when the metadata
dict lacks it; three synthetic Google Photos tests had relied on the byte
fallback for that.

Verdicts over 1,379 C2PA files and 468 fixture and capture files are
unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-09-26 20:19:13 -07:00

..

remove_ai_watermarks

Judge decoded C2PA manifests on their decoded strings alone

2026-09-26 20:19:13 -07:00