{
  "step": "C335",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Two-year coordinate directions and held endpoints",
  "previous_certificate_sha256": "035237002c409b46e107e4656f33a35bf686069c938a8715885ed14d4923ca98",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C335_Two_Year_Coordinate_Directions_and_Endpoint_Footprints_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C335_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": "713e8389c32a2f70b3c3fd490dff66b88c55410ff1a19dc2b389feea8e478050",
  "source_manifest_sha256": "056b939623ef34f7d08c80352cddf5396224d5d3f38cd74171ca5f18852285e8",
  "report_sha256": "8900ff81f2f1083182a8c0c17e631ffaffb86abdab496241a9247a4d540a737d",
  "checkpoint_sha256": "8215b8a8336c5f3c31127e05c0d3c7f62e6c8c2042563eea4b54f4cbeb70169e",
  "data_sha256": "5b4d6de472b4efacd6965b99d60b26c87753c48982ea5eabd1a6fe66d25e3356",
  "results_sha256": "f805e346f5bcdbbcfea8f7ffcdc094e5a0f7bee978ffdf09092b964a228148af",
  "calculation_sha256": "778a5666d78bf6195b9f7a7371d7a6dbce4099b36cc6397f64aa78d28cc08e0d",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "fe20a4fd90cdc2387ac3cd565d7053de538ee3f958a30def82ab7e217d77e048",
  "replay_sha256": "5d1b8eba1f6487d7ad38aed80d6f8866549ebb357e8565b714fc266f7af7dac9",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "38f535e69c3aa877f9c051ac9056a924af5c598131b60328522110237926b626",
  "assertions_passed": 59,
  "source_checks_passed": 16,
  "main_result": "Equal +2 comparison displacements have opposite underlying BC directions: cumulative ON-Shem later, regular MT Flood earlier. The paired endpoint reselection preserves17K and shrinks1060 sides to1058; it is not yet a whole-source operation.",
  "limits": "Only C319 admitted transitions and inherited phases are tested. Common origin is retained; no equation of differently typed source operations 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": "Lift each endpoint choice to its complete existing source pair: cumulative ON-Shem/ON-Flood at one annual index, and restored MT Noah/Flood at one Gear. Track the companions that a coherent operation moves, keeping all existing source domains fixed.",
  "next_step_executed": false
}