{
  "step": "C320",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Complete fixed17K Noah Flood rectangle census",
  "previous_certificate_sha256": "fb9678b840a85a077161047d2948eb43465c380d0a63af50ef6294590edbf670",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C320_Complete_17K_Rectangle_Census_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C320_20260924.md",
    "data": "evidence/DATA.json",
    "results": "evidence/RESULTS.json",
    "calculation": "evidence/CALCULATION.py",
    "verifier": "evidence/check.py",
    "next_step_decision": "NEXT_STEP_DECISION.json",
    "replay": "REPLAY.json",
    "control_integrity": "CONTROL_INTEGRITY.json",
    "readme": "README.md",
    "review_0": "evidence/C320_Independent_Math.py",
    "review_1": "evidence/C320_Independent_Math_Results.json",
    "review_2": "evidence/C320_Source_Review.md"
  },
  "step_sha256": "d3cbc0ed896fee819cb4289cf05baaf8ee0e1116d1d9dc2bddd273ec66804df4",
  "source_manifest_sha256": "531140ef20e33d02bcbed84d6d44d7f5b5287a7d44a2973300cf1d1b79e24431",
  "report_sha256": "849cbdd143475dd97fe17d4f0cd22aaf17b6ef21886367157052b1272fbb5a84",
  "checkpoint_sha256": "7a66c5acd0b8b7ae8c9d275f424649be31af803a5726252ea037c70dc8d59f6b",
  "data_sha256": "b959c53ee8e779cd357de0dc5b0bb143acc97513bc4e7ed3b365cca7b0b47ce8",
  "results_sha256": "acb8e28c2c462d9f81caab3b780f58695a47f42ebe1a8a0fc2e0ecfd68df9122",
  "calculation_sha256": "3a9cca241c2108db0c2a16e24f08d1ace25cbc75e580973e62426e5d1e9cd6b8",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "76c3b0cc70c7346aec9048dc474be351510244def9e2e82d8f1d3d55447def75",
  "replay_sha256": "58156549d15ca687709dbc498e350c8ae90eab68b24564b2019042258507f4b0",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "14c128d2a8c89aee5ea9b4a338e5176a3cbdf9f12e325f45d9ce277f6981112d",
  "review_0_sha256": "d59b9532bf83dffdcde0f366045aae35a7ee22b315581972d91f72cd157ff461",
  "review_1_sha256": "77aeaa69242fd78e7889aa6ea3882d8a5725c7aedf5bc3575f29c400620bc948",
  "review_2_sha256": "a044862e490d0775c5c32384ca0c9b608f520982ea5e5ded8773d423976c64c6",
  "assertions_passed": 77,
  "source_checks_passed": 15,
  "main_result": "All eightOFFannual pairs against528existingregularrecords yield6coordinate/9labelled600rectangles:6SPand3LXX, allOFF/T0/full430. G1companion i2 isvalidbutneedsabsentj8forreversed500. C287hasfourrowsi2…5.",
  "limits": "Finite exhaustive census onlywithinretainedfields. Endpointaliases andlabelcounts are notindependentwitnesses; source and derivedOFFprovenance remain separate.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": true,
  "next_proposed_step": "Test the source-state counterpart of the complete600 rectangle: use the existing nativeLXX_ON Shem/Flood pairs and unchanged17K against the same regular register. Compare any admitted endpoints to theOFF family through the explicitly supported460 cumulative and restored-MT source changes.",
  "next_step_executed": false
}