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wai-rs: prove the reconstruction binding over a real jpegai decode #53

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dcharlot wants to merge 1 commit from wai-binding-real-decode into main
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dcharlot commented 2026-08-01 23:23:47 -04:00
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Closes the loop on the C2PA reproducible-reconstruction binding: end-to-end from a real byte-exact JPEG-AI decode to a hard binding over the decoded pixels. Verified — round-trip verify, a second decode is byte-identical and the binding verifies it (decode-equivalence), a flipped pixel breaks it. Emits the real assertion over the decoded test256. First test compiling neural_int + provenance together; gated on the model bundle.

Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com

Closes the loop on the C2PA reproducible-reconstruction binding: end-to-end from a real byte-exact JPEG-AI decode to a hard binding over the decoded pixels. Verified — round-trip verify, a second decode is byte-identical and the binding verifies it (decode-equivalence), a flipped pixel breaks it. Emits the real assertion over the decoded test256. First test compiling neural_int + provenance together; gated on the model bundle. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
wai-rs: prove the reconstruction binding over a REAL jpegai decode
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c665850ccb 
The reconstruction_binding unit tests bind over synthetic RGB. This closes the loop
end to end: the byte-exact decoder decodes test256 to pixels, and the C2PA/JPEG-Trust
hard binding is taken over those pixels — sha256 over the canonical RGB8, plus the
descriptor pinning the reproducible decode.

It exercises the property the capability rests on and that neural-coded media could
not have before a byte-exact decode: the decode is deterministic
(decode-equivalence), so the binding taken over one decode verifies a second decode
byte-for-byte, while a single flipped pixel breaks it. Emits the actual assertion
(label science.transaction.wai.hash.reconstruction) over the real decoded image.

Also the first test that compiles `neural_int` + `provenance` together. Gated on the
model bundle; skips cleanly without it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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