{"source":"Hourly OHLC bars from Dukascopy (dukascopy.com), 2003 onwards; aggregated by Perfect Indicators.","license":"CC BY 4.0 — these aggregates only. The underlying tick history belongs to Dukascopy and is not ours to relicense.","attribution":"Perfect Indicators — https://perfectindicators.com","built":"2026-09-05","note":"Until 2026-09-03 the board filtered candidates on the FULL history and then scored the last 30% of it, so a rule reached its out-of-sample column having been chosen with the help of that column — and the board sorted on that column before publishing, so every published row held it by construction. A is that old selection; B selects on the first 70% only and scores the last 30%, which is what the board does now. If the tail carried no information a selected rule would be positive on it about half the time.","boardSelectsHeadOnly":true,"fixedAt":"2026-09-03","oosFraction":0.3,"minTrades":200,"asShipped":{"tested":5132,"selected":318,"heldTail":216,"pct":67.9},"headOnly":{"tested":5132,"selected":338,"heldTail":95,"pct":28.1},"chance":50}