{
  "step": "C277",
  "date": "2026-09-24",
  "status": "completed",
  "title": "Coverage of the cross-index598 alignment",
  "previous_certificate_sha256": "234a373f1619964a4e9dd4855f2d404335bc7acfb699d0764db60547e762066b",
  "source_manifest_sha256": "38838e2e36a457c25a6370592963d3c1aa0820647cc064a135a7bfead0e7780f",
  "step_sha256": "fdb04b1f09961283fbc691852d5bc3e4109c9fd6f29659faabb2a1548b8b9e4e",
  "report_sha256": "3dfe58625e997ae8404c436bdef6711a1d2a0ee88a84a11200abe1b87dc4f47c",
  "checkpoint_sha256": "6276d421ee9cef2fa8bdeb7f784bf2673a6a21672dd37d5583cc40ae343b2cbb",
  "results_sha256": "432a4cf9c9090570f956174d463d6194022627aab98b2dcc94843ca167bfec1c",
  "data_sha256": "00822ec86790622a53ba9cb88a5756933018482f92fc44d534872eba9c14b1f8",
  "calculation_sha256": "062a2ecd2c3bb04cd6798dac50d9ccd15f6562a8d148ad01cae6b238e504c974",
  "verifier_sha256": "1b0d77f7bd90c94c014bf13467830ac053579a4ca021d6d777d8442441f73259",
  "review_sha256": "e77821c4437e8b5eb2a377cc4b302750bb5f9ac8010060f098805e31624bf05a",
  "replay_sha256": "71831494a5fc403dd8dff2c8c591f577e74cf9ad70417d33da022e332b93c7e9",
  "control_integrity_sha256": "2bdfea94e7a5937fa7dae00b92f5313fd11afcc6ddcf715ff669889d2ca47c82",
  "next_step_decision_sha256": "ebf0d115cdae2994a8498936fa9d1140f9429f760cd2bf2e5044839edcc064a3",
  "assertions_passed": 37,
  "source_checks_passed": 9,
  "frozen_inputs": 7,
  "main_result": "Six cumulative cross-index598 alignments; four have both regular counterparts. The two lower rows require absent Noah3703/3704.",
  "limits": [
    "Cumulative annual membership is not separate event attestation.",
    "Four derived comparisons do not add stored paths or independent witnesses.",
    "Missing regular counterparts stay missing; no extra Gear is introduced."
  ],
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_proposed_step": "C278: audit the reverse602 relation and the finite domains of the two-year shifts, alongside the retained598/600 comparisons.",
  "next_step_executed": false
}