{
  "step": "C361",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Shem lifespan rectangle and squared E endpoint transport",
  "previous_certificate_sha256": "435f18001f5ccdf04a3be03b7dcf6a88adbb59552a1cefa90d509b00da9765dc",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C361_Shem_600_650_Rectangle_and_Squared_E_Endpoints_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C361_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": "0d30497bd6b90a177c5325f3682ac484e8d0576ffaf7f91cf34f20e84d91cd70",
  "source_manifest_sha256": "96ad9a4894a5e24bf6934df6a88d40e48e7dbb5846e57f78562446a552fdee43",
  "report_sha256": "f2ddd98d5690e65f1d99a2f728cd971f73e0a2a2c2209586d8c51bd3d2477eb6",
  "checkpoint_sha256": "bfe57f4f972521536cbfa6921e2204242da61912baddf91fdda9ac8367842cf8",
  "data_sha256": "ca26f98be9fbf9577d99650acfb131952f6adb641cd3922239182e858d0ce073",
  "results_sha256": "d8b77a2ccd84065a8dbbbd501830ad60359f3da80dea4fcc58aa634a20f307ec",
  "calculation_sha256": "723fb1dc0a68f784b5a1ec699e4f3a376648d420727da06afd80dbbd1f359303",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "dffde3cd34522d17d712e75e3100a46585918383d7212a139659a62089b25bd1",
  "replay_sha256": "ccf716da664cfbcb2ee27090bdd9bd53aeda0975eacb36e3a133d87298101478",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "2da6782da904e4fa9f166ec37b2798886b6135f5a5b33d2c1711de12ef1ca5b8",
  "assertions_passed": 16,
  "source_checks_passed": 16,
  "main_result": "The source Shem rectangle is600+50+600=1250. Translating the Noah-held double-E endpoints by−500 gives sourced SP Shem birth3206/3208, restored next-Gear MT Shem death2148/2150 and base MT Shem death1956/1958:1058→1250. The2056/2058 intermediate is not admitted.",
  "limits": "A sourced direct squared-E endpoint relation does not establish a two-edge source path through an absent intermediate. The50 and1250 identities share the same source constants.",
  "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": "Stress-test the Shem-held squared-E endpoint comparison across the fixed C319 menu and test both new constructions against the inherited seasonal-component choices. Keep Flood-close transport distinct from SP person companions and from MT person states.",
  "next_step_executed": false
}