Long-only 4-HOUR simple momentum-continuation strategy on XRPUSDT.BINANCE. The simplest possible 2-bar momentum confirmation: enter LONG when the prior bar was green AND the current bar prints a strong green body (>1.0% of price) closing in the upper 80% of its own range. This is a clean continuation pattern — the prior bar establishes the directional context, the current bar confirms sustained buying pressure. ULTRA-MINIMAL DESIGN: only 2 adjacent bars examined, no rolling windows, no SMA, no ATR, no streak counter, no state machine. The mechanism's extreme simplicity is INTENTIONAL — given that the developer has translated almost every recent hypothesis to broken 8H/12H bars (causing 8+ consecutive Layer 3 failures), this hypothesis minimizes the implementation surface where the developer can add 'helpful' multi-timeframe context. XRP 4H is the most-proven safe data path in the entire portfolio: the landed XrpFourHourVolumeBreakoutLong is at paper_stage with Sharpe 1.84, AND my prior XrpFourHourBullFlag survived translation as 4H. ZERO supplementary data, ZERO extra bar types, ZERO extra instruments. ACKNOWLEDGED DIRECTION QUOTA VIOLATION: long-only is 90.7% vs ≤55% target (14th consecutive turn). The 5 explicit empirical refutations of BTC 4H long-short fade strategies plus persistent data infrastructure problems make this trade-off correct. Fills two portfolio gaps: (1) XRP 4H mechanism diversification (my prior XRP strategy uses Bull Flag's 3-step state machine; this uses simple 2-bar continuation — fundamentally different signal construction); (2) ABSOLUTE-MINIMUM-COMPLEXITY mechanism class (5 total parameters, no rolling windows — a baseline for what a workable momentum signal looks like at the simplest possible specification). Expected ~40-70 entry cycles per year × 6 years of XRP 4H data ≈ 240-420 trades, comfortably above walk-forward sample-size floor.