{
  "step": "C477",
  "status": "completed",
  "title": "Fixed Mirror Images of the Source-Qualified Noah-Held Family",
  "previous_certificate_sha256": "471c8c1da70a0e1899be521a25bd747d50fd6e92176cf2bc155d126bb53441a6",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C477_Fixed_Mirror_Images_of_the_Noah_Held_Family_20260925.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C477_20260925.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"
  },
  "step_sha256": "30f87f648919af370e2bb36c6d0e2555dfeb1ef7102248d3ab234e58251952b8",
  "source_manifest_sha256": "36e9ef903f85487bedbc417eee31b39daf380229cd9eb7d953af062cd83a26b4",
  "report_sha256": "66b5a5e1f6d110831c301418f845530188aab091ae15f9095d3e752b96838a56",
  "checkpoint_sha256": "3d16d77ceeece651153747e5a8ddbc5d6a6adfcf1fa888efef2dd52be117b105",
  "data_sha256": "17769e319bbbd8e44a78160e6d1e9fa1cbcf1b89463e3abe88953df69c6d848a",
  "results_sha256": "d959b9fdbf70ef44846dc9baa66df41bd51347c612c62aefeead54aa76f61790",
  "calculation_sha256": "fef150692e1b99258c65dc723f3dc5d74aed4e345aa7dc13b4189c631c1f5873",
  "verifier_sha256": "522dc3d500a35472af7081298ec2b8c67e7c247ee8911c7ca17899c64f6cda87",
  "next_step_decision_sha256": "1793b15d3bf1b7555b813d9c75910298908561bdd8d973df5c5a6baa30854659",
  "replay_sha256": "3d8c813dab645528753745e2ea5fe443263fdafa55437919b4b0034ae925bfa8",
  "control_integrity_sha256": "fef440ea1666c3c54d1a296e66d87da22a5fe1fcc3a83fe6e4412ad206c5665c",
  "readme_sha256": "0a5e7fa360e0caa7502cf70d9f3f3be64c2705aaa4298dc3c7449b9251239d82",
  "assertions_passed": 64,
  "source_checks_passed": 26,
  "main_result": "The18 fixed-Mirror trials on nine Noah-held source-endpoint cases reproduce exactly the five inherited input images, including the original i3/i5 17K corners. No cumulative middle is sourced; none of the five complete input images has a sourced expanded final. Two isolated final images belong to the3899 alias case and lack pivot, input and middle.",
  "limits": "The inherited held-pivot diagnostics remain distinct from the active eight-pivot E menu. The cumulative domain is exactly48 LXX records, the exchange constants remain−2639/−2635, and no new phase, source anchor or cumulative Gear is introduced.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_step_executed": false,
  "next_proposed_step": "Verify the decisive C470–C477 results using a separately written source-grid and integer-arithmetic implementation, then audit every sealed packet, predecessor link and publication receipt. Resolve discrepancies before the final synthesis."
}