{
  "scope": "Explicit fictional author-defined worksheet: actual CSV reads and model calculations only, not vendor UI/import/reconciliation, bank samples, actual fees/rates/FX or native exported schema. Unknown relationships remain unknown.",
  "PayA_earnings_usd": "100",
  "PayA_payment_eur": "90",
  "equal_amount_candidates": 2,
  "negative_controls": [
    "PayB also EUR90, so amount is not identity.",
    "USD100 and EUR90 cannot be summed as one currency.",
    "Blank last-payment values remain unknown, not USD0.",
    "Sent does not establish bank receipt; bank data absent in this example."
  ]
}