{
  "step": "C414",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Complete 2K source-pair census under fixed 500 translation",
  "previous_certificate_sha256": "387fe5da51a3f0ac0a679e7f4a0596a2346b46d5ab68df9ea919a96647ba05f5",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C414_Complete_2K_Source_Pair_Census_under_Fixed_500_Translation_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C414_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": "41c4d6108171bd909802da22a63d3e092f21dfc9187ec9ea57820334cfd22ec3",
  "source_manifest_sha256": "d1771202b51d082d948e14eaeafc0438553661aeec42b48a3c313642b8e8ba14",
  "report_sha256": "5c8d4b01cfa2acb0993cdeb0eefb2ed5dbd25d08779f0eb93273c3250c3c65c6",
  "checkpoint_sha256": "b254a0bd875f40237a8517acc871f611818d6308a5ab45484933e7131b9b7d2c",
  "data_sha256": "62c1258b15082ab9a5ee2b08302e3a7c14e111b9123e4bb4871ff6be6c0050b4",
  "results_sha256": "11e15442a011636e72dc1cbfd78dfcf70f9bdbaefb56994ef9753873c01aa001",
  "calculation_sha256": "b4cbf8a505034c9321f6838395961edf33242bf477d6d58aa2840bcde3e6c4c9",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "8d3d7f43314622971436e041b312b888eb4a4c3132ead6d71a101715148eeebd",
  "replay_sha256": "8f9a857106a579824068c6f5f62e6d5365cc26d47910c42c62dd1b2bb31c2254",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "5985e111821612c92443d5b15a5cdfe9df238dca78bc6a35132cf64d8c31308b",
  "assertions_passed": 110,
  "source_checks_passed": 16,
  "main_result": "The complete373-coordinate census contains26 pairs exactly2K apart and46 original labelled endpoint pairings. Six pairs retain both endpoints after one−500 application; none survives two consecutive applications. The originali3/i5 cross-spans become8493 with cumulative corners fixed.",
  "limits": "Coordinate survival is not yet a selected source-record path. Generated second-shift endpoints and formal cross-spans remain unadopted; no new shift, width, phase or axis was searched.",
  "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": "Audit continuous record-labelled lifts of the six paired2K translations using C411's role-defined500 arrows, with its extra bridge tested separately. Identify the two additional coordinate pair types, reject unsupported alias substitutions, and compare the surviving source contexts with the existing Noah/Flood-to-Shem construction.",
  "next_step_executed": false
}