DOT Binance USD-M Dual-Timeframe Momentum Confluence — Long-Short 4H Trend Aligned with the Daily Trend, Flat on Disagreement, ATR Trailing Exit (Volatility-Scaled, Single-Bar, 3-Parameter)

A LONG-SHORT, single-instrument, pure-price MOMENTUM-CONFLUENCE trend follower on DOTUSDT.BINANCE (USD-M perpetual), 4H single-bar construction with a daily trend confirmation. This is a targeted, EVIDENCE-DRIVEN asset selection, not a blind re-skin — and the evidence is fresh and decisive. The session's most important result is the ADA dual-TF confluence NEAR-MISS: it 'emphatically cleared significance' (deflated_sharpe 1.0 vs expected-max 0.56, optimized Sharpe 1.75, positive sharpe_ci_low) — the ONLY dual-TF candidate besides BTC to do so. That splits the confluence family cleanly: it FAILS on choppy/fat-tailed names (SOL 0.79, AVAX 0.34, XRP/DOGE/LTC no-edge) but CLEARS on smooth, clean-trending large-cap L1s (BTC survivor Sharpe 1.99; ADA Sharpe 1.75). DOT is the nearest untested asset in the ADA class: a large-cap L1 with deep Binance USD-M liquidity, ~5y history, and clean multi-week directional legs (the 2021 run, the 2022–2024 secular downtrend, 2024–2025 swings) rather than memecoin fat tails or laggard chop. It applies the exact mechanism validated on BTC and ADA. NOT a mean-reversion fade (L53), NOT a squeeze breakout (L54), NOT a channel breakout (outlier class), NOT a cross-sectional basket (L52), NOT calendar/session (both falsified net-losing this session), NOT a NON-PRICE-feed gate (L46), NOT options/COIN-M (L50/L51). Fills the long-short gap (13.5% vs 86% long-only). To match the significance-clearing ADA construction and resist overfit: single 4H bar type, 3 params, fixed fast-EMA, volatility-scaled sizing (which was part of the ADA winner). Risk profile: ~1.5% equity risk/trade via ATR stop; vol-scaled notional = risk_budget / (atr_mult * ATR_4H) capped at 25% of equity*leverage; 2x leverage cap (reads self.config.leverage). Exactly 3 tunable parameters (slow/fast EMA ratio, daily-trend EMA length, ATR trailing multiple).

Implements the hypothesis exactly: the ADA/BTC-validated confluence construction (single 4H bar type, fixed fast EMA, 3 tunables with clamps mirrored verbatim in _param_bounds, defaults at the bounds centre, vol-scaled sizing, ATR trail) applied unchanged to DOT, the nearest untested large-cap L1 in that class. No extra feeds, so the positional-resolver drop that cost earlier ports two iterations cannot occur; leverage 2.0 is consumed in the notional cap and every sizing term is a fraction of CURRENT equity (L15). Layers 1-3 verified locally: static clean, all six synthetic scenarios pass with a continuous varying signal, and the real 365-day sandbox places 96 trades (48 entries) with no drops -- measurability is not an issue here (436 round trips, ~73/yr over the sample, so walk-forward windows and the 15-day holdout populate comfortably, ~3 trades per holdout). THE ASSET-SELECTION THESIS IS NOT CONFIRMED, and that is the honest headline. Replaying THIS EXACT CLASS over 13049 4H bars (2020-08-22 to 2026-08-05) with 0.10% round-trip fees: avg +0.63% per trade net of fees (4x the 0.15% viability floor), profit factor 1.26, win rate 26%, kurtosis 10.5, top-3 trades 12.6% of gross profit (well distributed). Yearly avg/trade: 2020 -1.02% (partial), 2021 +3.07%, 2022 +0.40%, 2023 +1.14%, 2024 +0.35%, 2025 -0.81%, 2026 YTD +0.28%; trailing 365 days -0.11%/trade. The real sandbox year returns +2.35% with Sharpe 0.11, PF 1.10, max DD 11.5%. Compare the same mechanism on the two names that cleared significance: ADA optimized Sharpe 1.75 and BTC 1.99, versus DOT's PF 1.26 and sandbox Sharpe ~0.1 -- DOT lands with SOL (0.79) and AVAX (0.34) in the 'positive but sub-threshold' group, not with ADA. Sensitivity is stable and uniformly modest (ema_ratio 2-4: avg +0.63% to +0.69%, PF 1.26-1.28; trend_ema 90/135/180: +0.29%/+0.63%/+0.84%, PF 1.12/1.26/1.34; trail 2-4: +0.60% to +0.75%, PF 1.26-1.30), so there is no parameterisation that lifts DOT into the winner class -- the longest-trend, widest-trail corner (180/4) tops out at avg +1.21%, PF 1.48 and still has 2025 negative. My read: the smooth-L1 hypothesis predicts DOT should behave like ADA and it does not; the edge is real and measurable but roughly half the strength, and the recent year is flat-to-negative. The analyst should weigh whether a PF-1.26 sleeve is worth optimization budget given that the deflated-Sharpe hurdle already rejected the 0.3-1.3 band repeatedly this session.

The hypothesis's premise — that DOT belongs to the clean-trending 'ADA class' (BTC survivor, ADA near-miss) — is falsified by the backtest: DOT lands in the choppy-laggard tier, below even the abandoned SOL and AVAX. Sharpe is only 0.208 with a bootstrap CI-low of -0.4669 (the CI straddles zero deeply), so the edge is not remotely significant and sits far below the family's ~1.5 DSR-clearing bar. profit_factor 1.08 is squarely in the fee-edge zone (L18), not the 2.0+ of the ADA/BTC winners. It is also capacity-blocked: capacity_usd is only $1.38M with impact_cost_pct 26.9%, meaning thin DOT liquidity would consume over a quarter of gross PnL — the edge, if any, exists only at toy scale. The record is carried entirely by the 2021 (+24.8%) and 2023 (+19.1%) bull years with deeply negative recent years (2025 -11.1%, 2024 -0.2%, 2026 -1.4%) and rolling_sharpe negative through most of 2024-2026; IR -0.17, max_drawdown 16.2% (CI to 56.5%). DOT behaves like the SOL/AVAX/XRP/DOGE laggards the confluence family reliably fails on, not like ADA. Abandon at BACKTEST_REVIEW rather than spend the optimization budget.