A LONG-SHORT, single-instrument, single-leg directional strategy on ETHUSDT.BINANCE USD-M that ports the factory's ONE optimization survivor — BTC Dual-Timeframe Momentum Confluence (Sharpe 1.99, paper_stage) — to the second-largest, most institutional, least-'alt' major, as a genuine GENERALIZATION TEST the factory has not actually run. This is materially different from every ETH directional strategy in the failure log: the ETH Volatility-Targeted Regime strategy died because it was ALWAYS-IN and SIZED inversely to vol, so its return was pure 2020-2021 bull beta that went negative every year after; the ETH weekly-macro book died on a timeframe-config bug; the ETH/BTC RATIO confluence was a market-neutral SPREAD, not single-name ETH. None of them is the exact proven mechanism — a fast 4H momentum read that must AGREE with a slow 1D read, standing FLAT on disagreement, with SHORT capability so it earns in down-regimes rather than bleeding bull beta, and an ATR trailing stop that runs winners. The flat-on-disagreement gate is precisely what separated the BTC survivor from the single-signal alt trend followers that died outlier-driven. ETH is chosen because it is the closest-to-BTC asset (highest liquidity, most correlated to institutional flow, least fat-tailed of the alts), so it is the single most likely place the edge generalizes; if it does, the factory gains a second uncorrelated directional book and strong out-of-sample evidence the mechanism is real rather than BTC-overfit. Single perp leg with a hard ATR stop — NO hedge leg, NO leverage stacking — so the cross-account liquidation flaw that killed the hedged books is structurally impossible. Long-short (fills the under-weight direction bucket). Three parameters.