{
  "step": "C321",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Native ON counterpart of the17K600 rectangles",
  "previous_certificate_sha256": "7785a0072d50c17a87be11a817d9fec6d135b239c51ffb12b3ee7eebc07ee443",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C321_Native_ON_MT_Counterpart_of_17K_Rectangles_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C321_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/C321_Independent_Math.py",
    "review_1": "evidence/C321_Independent_Math_Results.json",
    "review_2": "evidence/C321_Source_Review.md"
  },
  "step_sha256": "ed0f46a94f96fa3cb24325be8715036b4e0fa3993f313268461776802e035c24",
  "source_manifest_sha256": "53689d26fbb1862a599d1d8700160cb1aae08c49b5a8da3372e0e6c8fdef427c",
  "report_sha256": "741bfc92956cc561a40d374796d4093c5c276175d394b9e1cb055cffec9f72da",
  "checkpoint_sha256": "79e7e0d83d84f286c19cb120e4834193630b2c703a5271712b7bd56c36e43e82",
  "data_sha256": "c611bf0f23b7262682e62aa0f4e0d6fd138a5fd384d40e65227b08b7f40dd5a8",
  "results_sha256": "8df7dc689c76c81cc0570b0a3fb2591d99a7f1ad69933c29649f2587ddc7b9c0",
  "calculation_sha256": "1164a019e41759f8dffc9e8f0c525de4e5b3a38c420ac8b5c1e1cde4e600a597",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "ad937645f72696f59ce2fcde7c0df982b473bc500f3934f29c09d9f900af6ad1",
  "replay_sha256": "72f20192c57a6ba17b84e55727870057ef068c287632948ee26dded1a17028e1",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "7dda72b3533444a3f8c47dc3b3d69f5d051e149716c7667d423f12018199ed48",
  "review_0_sha256": "4ade61732e0ededa98d9d4894941c256ed2a3addc95707df07f6738ad534e59f",
  "review_1_sha256": "7dd90a034b98f98b1992b566524295753fef4cbe049de0f8f55a8b8ffd20c516",
  "review_2_sha256": "6e9d04c74b3b73d7ee7e6f91a01257cd7569bb08242c781f1081766b92c1df1b",
  "assertions_passed": 35,
  "source_checks_passed": 15,
  "main_result": "NativeLXX_ON yields3complete17K600rectangles at i3/5/7 inMTON/T60/full430. Allfourcorners shift−460 fromtheOFFSPprimaryfamily, withsixexactphase matches. ThreeFloodcloses have noMTNoah counterparts.",
  "limits": "OnlyNoah/Floodtransportis establishedhere. Cumulative/regularCainanoperators, native/restoredstates andSPcompanionboundaries staydistinct.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": true,
  "next_proposed_step": "Test whether these three nativeON/MT600 counterparts extend to the complete sourceNoah/Shem biography under the same460 comparison. Then give one joint support table forOFF600, ON600, reversed500 andC287, distinguishing source co-existence from a uniform biography transport.",
  "next_step_executed": false
}