{
  "step": "C305",
  "date": "2026-09-24",
  "status": "completed",
  "title": "Annual parity of the joint600-year comparison",
  "previous_certificate_sha256": "99d7fbc95b4ea97f11dbdea2d7d7433ae63daa5ee0a55f4bcce82014919e9b42",
  "source_manifest_sha256": "bb24f26e4348be4c7ff77013f5579a4b1918f28071c85c68e1077ef9770ceabe",
  "step_sha256": "2ba2abcf1a3b851906c3c26ac1d102508895db983cba6ac16c7506e2e9bbf5e1",
  "report_sha256": "ae93ff8e41ecda22352318dc3e4610e73cb04a2c7b6249ae4dd851263c2255ee",
  "checkpoint_sha256": "1782b9bdf89c1b8a6cbbcb2b64b10e8f672e00184472a1c06e20d19509273cc6",
  "results_sha256": "8701dd4f21b220c44eb042ddf43559996d5467c3da8ebb37afa4d1c8e20c5764",
  "data_sha256": "8563a1397f611795ae8f6e84951973f07ef57406b156f0aad0783e031872ca39",
  "calculation_sha256": "ce85094ba4ff43886266f897dd0616fa98f0c900cc3608bf50a57f5132112d52",
  "verifier_sha256": "1b0d77f7bd90c94c014bf13467830ac053579a4ca021d6d777d8442441f73259",
  "review_sha256": "09d7abecf55ff7c0f251ac4a2b9d214ef312fd6945716fc1802a0ec7ca28cc5e",
  "replay_sha256": "e9497436e49a93d754ecb02eb1dc58004ceabe963e66643366575dfffa85fcfc",
  "control_integrity_sha256": "41aee61f77fbc03abaf36ac516ed70de5eb5b9e3532ea9adcb9d26b0eeb3b797",
  "next_step_decision_sha256": "0cbd0193a617013417cb7a6c98c65421cb8497c55cbb38454418d2aa6dc7bdd6",
  "assertions_passed": 10,
  "source_checks_passed": 8,
  "frozen_inputs": 6,
  "main_result": "The jointly supported indices2/3 give599/601; exact600 would require noninteger annual index5/2.",
  "limits": [
    "599 and601 are valid off-diagonal source comparisons.",
    "The result does not invalidate the independently bound C302600 segments.",
    "The formal half-index is not added to the annual source field."
  ],
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_proposed_step": "C306: Audit the actual phase components and all admitted Gear1 Noah-rail/Flood-boundary alternatives, recording which fixed interface each600-year alternative changes.",
  "next_step_executed": false
}