{
  "step": "C406",
  "status": "passed",
  "assertions_passed": 28,
  "checks": [
    "complete three Gear Shem families",
    "complete labelled match to independent500 proposal",
    "six coordinate and two complete loops",
    "fixed source loop geometry 0",
    "variant displacement 0",
    "fixed source loop geometry 1",
    "variant displacement 1",
    "fixed source loop geometry 2",
    "variant displacement 2",
    "fixed source loop geometry 3",
    "variant displacement 3",
    "fixed source loop geometry 4",
    "variant displacement 4",
    "fixed source loop geometry 5",
    "variant displacement 5",
    "fixed source loop geometry 6",
    "variant displacement 6",
    "fixed source loop geometry 7",
    "variant displacement 7",
    "fixed source loop geometry 8",
    "variant displacement 8",
    "fixed source loop geometry 9",
    "variant displacement 9",
    "fixed source loop geometry 10",
    "variant displacement 10",
    "fixed source loop geometry 11",
    "variant displacement 11",
    "all next death J comparisons pass"
  ],
  "source_checks_passed": 15,
  "source_checks": [
    "frozen PREVIOUS_CERTIFICATE.json",
    "frozen PREVIOUS_RESULTS.json",
    "frozen PREVIOUS_DATA.json",
    "frozen PREVIOUS_CHECKPOINT.md",
    "frozen PREVIOUS_NEXT_STEP.json",
    "frozen File_18.md",
    "frozen File_09.md",
    "frozen C286_DATA.json",
    "frozen C287_DATA.json",
    "frozen C271_REGISTER.json",
    "frozen C405_DATA.json",
    "predecessor PREVIOUS_RESULTS.json",
    "predecessor PREVIOUS_DATA.json",
    "predecessor PREVIOUS_CHECKPOINT.md",
    "predecessor PREVIOUS_NEXT_STEP.json"
  ],
  "canonical_or_graph_edits": false,
  "check_scope": "Finite source-labelled calculation; counts are verification inventory, not witness counts."
}