{
  "created_at": "2026-08-01",
  "evidence_status": "RESEARCH_CANDIDATE_NOT_PRODUCTION",
  "data_sources": [
    {
      "market": "US",
      "symbols": [
        "SPY",
        "AAPL",
        "AMZN",
        "NVDA",
        "TSLA",
        "AIG",
        "AAMRQ"
      ],
      "verified_end": "2026-03-20",
      "limitations": [
        "price return",
        "no PIT fundamentals",
        "no total return",
        "public repository accuracy not guaranteed"
      ]
    },
    {
      "market": "KR",
      "symbols": [
        "005930",
        "000660",
        "035900"
      ],
      "verified_end": "2021-04-16",
      "limitations": [
        "stale source",
        "inferred corporate-action rescaling",
        "no PIT fundamentals",
        "no total return"
      ]
    }
  ],
  "simulation_assumptions": {
    "US_one_way_cost": 0.0007,
    "KR_one_way_cost": 0.001,
    "tax_fx_cash_yield": "excluded",
    "execution": "close-to-close with next-day position lag"
  },
  "reproducibility_warning": "Raw source data are not bundled. Scripts expect the local filenames documented in source code."
}