{
  "step": "C390",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Unconditioned finite regular E/J family census",
  "previous_certificate_sha256": "3944dd1ebf7f8271087de752aabfb67b52e4afad771f3ea9cf2c4d811bbd0813",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C390_Unconditioned_Regular_E_J_Family_Census_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C390_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",
    "test_plan": "TEST_PLAN.json"
  },
  "step_sha256": "bbb55b2ee07bb95d162b769eda6f463f7b43be58a058fd7ac62de94b6afbd151",
  "source_manifest_sha256": "ed93393e16a603aab892be78cc17f4b78d354163667dbc9a1e09e3ec957338d9",
  "report_sha256": "d0aa5a573074d2e535035e7cfcdbc95d8f9ba2776372e240c5b9a9bdbf1778bc",
  "checkpoint_sha256": "016701f94b1dc44dbfb00aacc043aed7901f066e8202accec91dd31a49a89eb9",
  "data_sha256": "7a5045861ddcb2975376bf9088628bb8569a13a0bb1c9979d0c4fb02390891db",
  "results_sha256": "8b0a7a46039c16d5afee19f511fcef619e54c7d2540c24d2aaa0e2bd6e80abc6",
  "calculation_sha256": "a35cc3cd1803256bc8b885e813c8ca8addebdbebe5facbadefa60cdb453425ad",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "d0e893f3a69d73b3fa229921e82d15d5e052936db11abe8edd6d8c31b64bfa5e",
  "replay_sha256": "b42da70bf849f34f976de03082daa0ee3e3c01edb290d561e71abd03d5a57a78",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "3bd46df78c4ef56a0ca17bc06ab4d07bba0f59038f099bbdbd2182213579ce39",
  "test_plan_sha256": "48b96f1c860bd9e612677bcd306d12af00ccd8428fc4b6c0d39a5b862a648e3e",
  "assertions_passed": 67,
  "source_checks_passed": 15,
  "main_result": "The4096-case coherent regular-family census, with no529/PJ/17K prefilter, recovers exactly eight labelled E/J squares at four coordinate configurations. Sixteen trials have both E edges; only the sourced Flood boundary completes eight. Successful outer side1058 emerges from the source equations.",
  "limits": "The motif fixes coherent same-Gear family labels and stated pivot roles. No significance probability, independent witness claim, arbitrary-source exhaustiveness or source-prescribed pairing 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": "Derive the source equations behind the census and test whether the admitted E/J motif is equivalent, within this fixed domain, to the original common P/J529-side construction. State which relations are forced and which still require source membership.",
  "next_step_executed": false
}