BTC Cross-Venue Funding Rate Differential Carry (Binance vs Hyperliquid, 1H Monitoring, Market-Neutral)

A delta-neutral CROSS-VENUE funding-rate-differential carry strategy on BTC perpetuals. Continuously monitors the normalized 8h-equivalent funding rate differential between BTCUSDT.BINANCE (funding accrues every 8h) and BTCUSD.HYPERLIQUID (funding accrues hourly). When the differential exceeds entry_threshold, opens opposing equal-dollar-notional positions: short the high-funding venue + long the low-funding venue, collecting the funding spread while remaining net-zero on BTC price exposure. Closes when differential mean-reverts. This is a structurally different mechanism from BtcInterExchangeBasisMR (which trades the PRICE basis between venues) — this trades the FUNDING RATE differential, which is a distinct mechanically-driven cash flow. Hyperliquid funding rates are documented as substantially more volatile than Binance funding because: (1) HL's funding rate has a higher cap (1.0% vs 0.75%) and recalculates hourly versus Binance's 8h cycle, (2) HL has thinner depth and retail-heavy flow producing more extreme funding regime shifts during sentiment swings, (3) HL's predicted_fundings stream provides forward-looking divergence signals. When extreme HL funding diverges from Binance, the spread reliably mean-reverts over 12-36h as cross-venue arbitrageurs close the gap. FILLS MULTIPLE UNDER-REPRESENTED PORTFOLIO BUCKETS: HYPERLIQUID (4.8% vs ≥20% target), cross-venue (6% vs ≥15% target), long_short market-neutral (12.3% vs ≤55% long-only target). KEY DESIGN DISCIPLINE LEARNED FROM RECENT FAILURES: only 4 hypothesis-declared tunable parameters, every other internal constant hard-coded to prevent parameter bloat. Symmetric reward/risk via small fixed stop on basis divergence (no asymmetric TP<SL). Mechanism class proven structurally sound (funding carry is one of the few mechanically-guaranteed cash flows in crypto), distinct from the failed mechanism classes this session (BB-MR, volume-confirmed breakout, multi-week trend following, drawdown accumulation cross-asset transfer, volume-surge momentum continuation).