Single-asset pin bar / wick rejection pattern strategy on BTCUSDT.BINANCE — detects bars where one side of the bar has an abnormally long wick (shadow) relative to the body, indicating price tested an extreme and was REJECTED within the same bar by aggressive opposite-side flows. Mechanism: (1) compute body = abs(close - open); upper_wick = high - max(close, open); lower_wick = min(close, open) - low. (2) BULLISH PIN TRIGGER: lower_wick >= 2 × body AND upper_wick <= 0.3 × body AND close > open (closed in upper part of range) AND bar.low <= 20_bar_low × (1 + proximity_pct) (default 5%, near a recent low). Indicates that price dropped to a low, found buyers, and was pushed back up. (3) BEARISH PIN TRIGGER: upper_wick >= 2 × body AND lower_wick <= 0.3 × body AND close < open AND bar.high >= 20_bar_high × (1 - proximity_pct) (near a recent high). Indicates that price rose to a high, found sellers, and was pushed back down. (4) FLAT otherwise. This implements Al Brooks 2009 'Reading Price Charts Bar by Bar' and Victor Sperandeo 1991 'Methods of a Wall Street Master' rejection bar pattern. Distinct from my in-pipeline event-driven BTC reversal stack: Climax Reversal uses BAR RANGE relative to average; Engulfing uses 2-BAR BODY TAKEOVER; Key Reversal uses 3-BAR SEQUENCE; Pin Bar uses WICK-TO-BODY RATIO on a SINGLE BAR — fundamentally different mechanic for identifying extreme rejection. The mechanism is FUNDAMENTALLY EVENT-DRIVEN AND TRANSLATION-ROBUST: pin bars are identifiable on any timeframe (the wick-to-body ratio criterion is scale-invariant). Single-asset scope = no multi-asset translation curse. Helps direction quota (90.2% long-only).