{
  "step": "C457",
  "status": "completed",
  "title": "Shared-Word Transport of Actual 529 Source Intervals",
  "previous_certificate_sha256": "d1a4cc47659f58763772ac17d35e85f0fd508c22ac460bbc7183145e5f999d0c",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C457_Complete_Shared_Word_529_Interval_Transport_20260925.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C457_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": "ea69f37b41e03efe8a7a5c55d64063af0248a33d63ddec05ef2130154f0c341f",
  "source_manifest_sha256": "17f38580a32f6a437024aca2bcb5119bf390e1674cce67c4261838fcde3c51f8",
  "report_sha256": "5ab9a3f77680caf0ec1cc1bf00d1ca9080d3fe9b47bc764faaaaded390f48ad5",
  "checkpoint_sha256": "47ea6c42f35225707357b47faeb633a0a75b71a51f5573aaf05e4452e409341f",
  "data_sha256": "08e282851688f93f90479d87ed037d40ae1e31cf3a7b26933a949284e00a61e1",
  "results_sha256": "15cfd467cb58b5dcd3482f3c9533f0a7a1126ab9f27f848c8d6db941097e2488",
  "calculation_sha256": "8c791d8d6bf14268f36f9fe8c5fff0d3bd07b3b740573cf8ed75f2117349f179",
  "verifier_sha256": "46964ade0128d97b589fb678853daf7b81ffff1d90eb1a99221031ba734b093f",
  "next_step_decision_sha256": "051f6b6ff07bb689c9a01557e7820eccf19126ff715c298b6de020c7e1283ad7",
  "replay_sha256": "04b5bb4c7ea6ba5f1e63efe960f19896419caac6b6605e4a5d61fb8b384ab1e1",
  "control_integrity_sha256": "24e687bf3e03c7f16c3ca2aafe4c72e9aab25f03d55fa644c44a178e698ff3df",
  "readme_sha256": "e185628c8f1f34a991bfdc9b9371cc21ee60dde26282e65e822dd246c7127364",
  "assertions_passed": 3,
  "source_checks_passed": 21,
  "main_result": "Complete shared-word closure of all60 sourced529/1058 pairs reaches63 pairs in756 trials. Only two seeds move:1895/2953→1745/2895 and2148/3206→2020/3170, both1058→1150 underE3620. Only the latter continues, to1956/3206 with span1250 underE2756. No reflection or further E step is admitted.",
  "limits": "Both ladders are comparisons of distinct source contexts. The interval closure adds no anchors, graph edges to the canonical chronology, or evidence of historical intent.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_step_executed": false,
  "next_proposed_step": "Resolve all endpoints and pivots of the two admitted interval ladders into their source-state terms and derive the1058,1150 and1250 gaps directly from the Noah/Shem/Flood bases."
}