{
  "step": "C281",
  "status": "passed",
  "assertions_passed": 10,
  "checks": [
    "MT has only three birth records",
    "coverage parity j2",
    "coverage parity j3",
    "coverage parity j4",
    "coverage parity j5",
    "coverage parity j6",
    "coverage parity j7",
    "triad counts without imported companions",
    "same Gear600 births",
    "missing even-index centers"
  ],
  "source_checks_passed": 8,
  "source_checks": [
    "frozen input PREVIOUS_CERTIFICATE.json",
    "frozen input PREVIOUS_RESULTS.json",
    "frozen input PREVIOUS_CHECKPOINT.md",
    "frozen input C01_RESULTS.json",
    "frozen input C271_REGISTER.json",
    "frozen input C280_DATA.json",
    "predecessor binding PREVIOUS_RESULTS.json",
    "predecessor binding PREVIOUS_CHECKPOINT.md"
  ],
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false
}