HIP-4 is live on testnet. The first set of outcomes are recurring binary options on HyperCore mark prices. The interface at app.hyperliquid-testnet.xyz shows these outcome markets under "Predict" in the asset selector.

As a reminder, outcomes are fully collateralized contracts that settle within a fixed range. They introduce non-linearity and dated contracts, and do not involve leverage or liquidations.

Multi-outcome markets are also supported but are not part of the initial release plan. The initial mainnet release will be 1-day binary markets on BTC and HYPE. The first priority is to validate the technical implementation while avoiding complexities around outcome creation and settlement.

The outcome trading API is similar to spot, with the key differences highlighted here: https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/asset-ids.

Feedback and bug reports are appreciated.