{
  "step": "C339",
  "status": "passed",
  "assertions_passed": 13,
  "checks": [
    "Noah-bound500/100 base counterparts",
    "Noah-bound500/100 source modal spans",
    "Noah-bound500/100 ladder widths",
    "Noah-bound500/100 increments",
    "Noah-bound500/100 modal ladder predicate",
    "Noah-bound500/100 unchanged doubleE",
    "Arphaxad-bound502/98 base counterparts",
    "Arphaxad-bound502/98 source modal spans",
    "Arphaxad-bound502/98 ladder widths",
    "Arphaxad-bound502/98 increments",
    "Arphaxad-bound502/98 modal ladder predicate",
    "Arphaxad-bound502/98 unchanged doubleE",
    "one source chain among two valid bindings"
  ],
  "source_checks_passed": 16,
  "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 C338_DATA.json",
    "frozen C329_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."
}