{
  "step": "C356",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Source-event pivot census for E translations",
  "previous_certificate_sha256": "1700634ea44786cc9263e4a3827d987b62f093502480257b966c3675e9983d3e",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C356_Five_Source_Pivots_and_Three_460_to_500_Realizations_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C356_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"
  },
  "step_sha256": "d1d92f108cb13127ae2ef1bbd4df642b14ffd3ba20a33a2aa6aee01f3040abe6",
  "source_manifest_sha256": "c14b8ef0002eb3a2339d00fcdef0b8d8238d54a2d4218b6aab40831c880f56e0",
  "report_sha256": "172cc972ab35945758234aa48b1b63c4688af1b4e264285bdbd3fa6f73bda092",
  "checkpoint_sha256": "b961e0742fb27140c72f907788ccf76d50c014d30701c1043f8ca9f17936de87",
  "data_sha256": "51915ad840bdbba7f5002c99bb9620e28614631bd4ea7fd53809104d84a43836",
  "results_sha256": "e1f9705e9e9ac6e795a74198e829e1bef77aeda7b21f687febf02b8ccd3c736b",
  "calculation_sha256": "6592eb74a485d8b697e4b2c10ac6dd4f6f762a45628a6c0125df427315cc5779",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "3ec14584d1afb273ac09b410524f0ec2fac58ba662a5651d80af3e02c086f35e",
  "replay_sha256": "bf0e2afa5260a4b85fa5a0942699f2baaf58245f9849a1af8e3631213fead360",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "10d39a5cdcf59ee2320a27508d8743817c8b1716c708939a7fd1d2b02b6a42d0",
  "assertions_passed": 56,
  "source_checks_passed": 15,
  "main_result": "The460→500 E arrow has three complete source placements: SP Noah birth, SP Flood start and SP Shem death. The final placement maps restored-MT Shem death2146/2148 to base-MT Noah death2106/2108 fixing SP Shem death2606/2608.",
  "limits": "Translation covariance explains related triples; repetition is not an independent witness count. No whole-field translation action or broader Gear domain is inferred.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "review_provenance": "Root-agent analysis and deterministic replay; no new independent-agent review",
  "next_proposed_step": "Derive the three-row construction from the source offset and lifespan constants, then exhaust the held context/Gear/SP-rail menu to determine which settings support all three rows together.",
  "next_step_executed": false
}