{
  "step": "C310",
  "date": "2026-09-24",
  "status": "completed",
  "title": "Minimal context cover and final529 synthesis",
  "previous_certificate_sha256": "7f53508165ab6f0f64d3c2251ab89410baef519f4fcd787d1e8130aa24fd4851",
  "source_manifest_sha256": "a14f56b3a844c2625c6f6117e5e9ee2f8855adaa3b3e4f0ba5dc7b22b2ffcecb",
  "step_sha256": "042225e3af2f60105d401cb44a28c8416a5ef523728f53f64c1eff7829f12713",
  "report_sha256": "2a688352f1b7f6f786112251de919b4321da60ec5567a092170dc1f5c49e49dd",
  "checkpoint_sha256": "e3bfa7549d32c7d9488a6e26681f31b6339b061dc6aebef874494c553bd3efd2",
  "results_sha256": "b38ec7fefdecdf82e48e0ea36751f9bc1249b031054392851b5edb2f20bae6eb",
  "data_sha256": "e3c4d776d03b7cca21cb7df6b3a7c35331240c3fd64f1c4b4018d943ebf7c1fa",
  "calculation_sha256": "9dbc7018ef08f740fff5b9204b489cd6343ddfef7b910005c05454a84a2796d8",
  "verifier_sha256": "1b0d77f7bd90c94c014bf13467830ac053579a4ca021d6d777d8442441f73259",
  "review_sha256": "e4ddcea7dc4b3e84fe09b969ce6a28d6c88def0cec5369c94a824aadaa2d6f88",
  "replay_sha256": "1efd71134957b940ced956e287f6aaa117bb7ab182370a645491889d30e0b304",
  "control_integrity_sha256": "6604ed8f60727031e77376bb83cb716ace12664e9cfd1c5b6f693af1c7f0e910",
  "next_step_decision_sha256": "f517067295e8bd1470d983250db9ccd90b84ad03b068219ed5fd6e3bebc7ed8f",
  "assertions_passed": 15,
  "source_checks_passed": 13,
  "frozen_inputs": 11,
  "main_result": "The seven-index LXX600-segment cover uniquely requires MTbaseline plusSPalternate contexts and a role change; one annual index remains missing. The batch closes with source-qualified529 structure and explicit limits.",
  "limits": [
    "A minimum set cover is a mathematical property, not a historical selection rule.",
    "The regular context family keeps Gear and rail labels on each segment.",
    "Absolute placement, historical intention, statistical rarity and a globalz-law are not established.",
    "The authorized batch ends atC310; C311 is unexecuted."
  ],
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_proposed_step": "C311, not executed: audit File_18, File_09 and the existing axis-source statements for a pre-existing rule selecting the MT Noah/Flood→SP Shem-life context switch; preserve all endpoints, bridges, anchors and Gear limits.",
  "next_step_executed": false
}