A market-neutral statistical-arbitrage pairs trade between TWO DIFFERENT but strongly correlated Layer-1 perpetuals on Hyperliquid: SOLUSD.HYPERLIQUID and AVAXUSD.HYPERLIQUID. Both are smart-contract L1s that co-move with the same beta to the broad alt market, so their price RATIO is a stationary, mean-reverting spread — when it stretches, idiosyncratic flow (a SOL-specific pump, an AVAX-specific dump) has temporarily decoupled them, and it reverts as relative value reasserts. This is fundamentally distinct from every abandoned spread strategy this session: those were all SAME-ASSET (one coin across two venues, or spot-vs-perp of one coin), which are arbitrage-pinned to within a few bps and therefore sub-fee and untradeable. A cross-asset ratio between two SEPARATE coins is NOT arbitrage-bounded — it routinely swings several percent — so the captured reversion (whole percent) dwarfs the ~0.18% two-leg Hyperliquid round trip. Crucially, BOTH legs trade on the SAME venue at the SAME bar timestamps, so there is no cross-exchange fill-timing window and no two-venue neutrality-leak artifact. Simple, few-parameter z-score construction to resist overfitting. Fills the under-represented Hyperliquid venue, pairs scope, and market-neutral direction buckets in one strategy.