{
  "step": "C436",
  "status": "completed",
  "title": "Source Identity and Direction of the Shem–Flood Return Loop",
  "previous_certificate_sha256": "e91dd6a9f0c2366141972ec6dc61191d5e615950ea9be0503c1b7a5bfbecec4e",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C436_Source_Audit_of_the_Shem_Flood_Return_Loop_20260925.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C436_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": "f16f14d18ae51352e27720e173a256a11bf1f3e5c0e462b1e13ea179c2011abc",
  "source_manifest_sha256": "39227655d8c057edc9a7f1546445e9fc6a24c8313df3fd7ec7e9f62a1cb70992",
  "report_sha256": "e67ff1c4506b85bc7fc8d6a473fdc2adf74f5a1a3164df7f9b9f39c82bc991da",
  "checkpoint_sha256": "ebeb894dd93e58ac8ba32df2adc48c5c3511abcb4b5c8dd41966a3b2fa6f7032",
  "data_sha256": "0bee8bad86c1b14b5f70a9bb33d31531641a57596f1ce38bbbffdf0116f07b7f",
  "results_sha256": "744d7fd0fc9253397b34d300c8f6436d808dea395aa75b1be88ddcac2e242b12",
  "calculation_sha256": "920c376c62f1b44beb4088a06a5995c047b1e0cb311a872c62a06ceebb4771d1",
  "verifier_sha256": "61226d6621cddd2fc4ff6c4d4a19e4fdbe2eab7cf4ffab714d324c764479bc09",
  "next_step_decision_sha256": "26edf6f1d89be8eddc26911fcf251b951a5c6d76cec71e7c48ba879b61797a42",
  "replay_sha256": "5519615c002fa34a87a1120efe354ad1be3d225b706f89f72971d05989d38f9a",
  "control_integrity_sha256": "08d2f8a5987f61e235f75753157ad528755f646694a8bcf86b733ccf4c9c9e57",
  "readme_sha256": "a357937b4534476988897bc72cc29a349adc618594502e4de0a99146f1be53f1",
  "assertions_passed": 17,
  "source_checks_passed": 20,
  "main_result": "The3206→3170→3206 loop has16 Cartesian labels:8 same-record returns and8 SP/LXX alias switches; one all-SP assignment and zero unchanged-context assignments. Source36=100−60−4. Signed gaps414→450 and−414→−450 establish a mixed-direction fixed-point return, not chronological repetition. Both pivot and station pairs share3188, already MT Noah birthG2/C1/T0/F1, with radii432 and18 (ratio24).",
  "limits": "A fixed-point return is not an identity map or a repeating historical sequence. The midpoint3188 is a local source comparison; the global January-AD1 Mirror is unchanged.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_step_executed": false,
  "next_proposed_step": "Census the six Gear/Terah local midpoint profiles already determined by C434: c=N−518, outer pivots c±432, inner stations c±18. Require every point to remain in the fixed source register and derive the role/context offsets without fitting a center."
}