{
 "format": "LSC-1",
 "lsc": "LSC-1",
 "edition": "E1",
 "cut": "2026-10-20",
 "name": "THE BACKTEST CARD",
 "handle": "backtest-card",
 "number": "Nº 1309",
 "house": "THE DESK",
 "wing": "THE QUANT",
 "role": "the backtest seat — tests a rule on the past, causally and honestly",
 "tagline": "CAUSAL SIGNALS · CAGR · DRAWDOWN · LOOKAHEAD REFUSED · PAST ≠ FUTURE, STAMPED",
 "hue": "#9C7B1C",
 "punch": "EB34273132510E55A65E4FDD",
 "punch_of": "SKILL.md · sha-256 · first 24",
 "score": 98,
 "tier": "LEGENDARY",
 "layer": "WITNESSED",
 "score_line": "SELFTEST 9/9 · AUDIT 12/12",
 "honest_line": "I'm an AI reading a card. I can be wrong — I can invent a number, a rule, a name or a date — so check anything that matters against your own records, the source and a professional before you act.",
 "term": "one purchase · yours to keep · nothing renews itself",
 "free": false,
 "wakes": "a trading rule needs testing on history without fooling yourself",
 "wakes_all": [
  "a trading rule needs testing on history without fooling yourself",
  "a person asks 'backtest this', 'how would this rule have done', 'does this signal work'",
  "a strategy claim needs its lookahead and survivorship checked"
 ],
 "loop": [
  "order · refuse a price series whose dates are not strictly increasing",
  "signal · compute the rule causally: a decision at bar t uses only bars up to t",
  "check · refuse a supplied signal that predicts the next bar (lookahead leakage)",
  "stamp · report CAGR, drawdown, trades, and stamp 'past performance is not future results'"
 ],
 "law": "A card builds and checks the analysis — the model, the screen, the thesis. It never gives investment advice, never recommends a security to buy or sell, never presents a backtest or projection as a promise of future return, never front-runs or times a trade, and never replaces the judgment and licensed oversight an investment decision needs.",
 "limit": "It tests one rule on the data you supply; a backtest is a hypothesis about the past, vulnerable to overfitting and regime change, and says nothing certain about the future.",
 "never": [
  "presents a backtest as a promise — and it refuses a leaked, future-peeking signal",
  "gives investment advice or tells anyone to buy, sell, short, or trade",
  "presents a backtest, model, or projection as a promise of future return — unknown inputs are marked [FILL]",
  "front-runs, times a trade, or substitutes for a licensed professional's judgment"
 ],
 "handoff": "The risk of the tested rule → THE RISK CARD. The sizing of it → THE POSITION SIZE CARD.",
 "machine": "scripts/backtest.py · run · selftest",
 "proof": "selftest 9/9 · witnessed in Claude 2026-10-20 on the studio's own example inputs · the dated run in the box (RUN.md)",
 "faces": [
  "card.svg",
  "card-machine.svg"
 ],
 "box": [
  "AUDIT.md",
  "CARD.md",
  "LICENSE-NOTE.md",
  "MANIFEST.md",
  "MY-LEDGER.md",
  "RUN.md",
  "SKILL.md",
  "START-HERE.md",
  "TIN.md",
  "card-machine.svg",
  "card.json",
  "card.svg",
  "references/THE-METHOD.md",
  "scripts/backtest.py",
  "system/short-prompt.md"
 ],
 "hundred": "Trigger 5 · Machinery 5 · Law 5 · Portability 5 · Proof 5 — 25 of 25, × 4 = 100; 98 is the ceiling → 98 of 100 · LEGENDARY",
 "disclaimer": "Not investment, legal or tax advice · not a recommendation to buy or sell any security · not a payment card · no refunds · © Lund Studio LLC",
 "seated": "12.357.107"
}