HIP-4 Prediction Markets on Hyperliquid

HIP-4 brings outcome markets to Hyperliquid: fully collateralised contracts that settle inside a fixed range. They give prediction-market and bounded-option exposure without leverage and without liquidations.

Outcome tokens trade between 0 and 1, so the price reads directly as an implied probability. The two sides share a single order book: buying Yes at price p is the same order as selling No at 1 minus p.

At settlement each Yes token converts to settleFraction quote tokens and each No token to one minus that fraction, so a fully resolved yes pays out one and a resolved no pays out zero.