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Published June 19, 2026 Hyperliquid HIP-4 Outcomes, Web App Snapshots, and Builder-Aware Streams GoldRush has added three new types to the Hyperliquid Info API and two new GoldRush-native streams to the Hyperliquid WebSocket API. On the Info API (POST https://hypercore.goldrushdata.com/info):
  • settledOutcome - resolution details for a settled HIP-4 binary outcome market on HyperCore: the resolved side, resolution price, and settlement timestamp.
  • webData2 - the composite payload the Hyperliquid web frontend loads for a wallet on page open, combining perp clearinghouse state, spot balances, open orders with trigger metadata, and recent fills in one round-trip.
  • userTwapSliceFillsByTime - a wallet’s TWAP slice fills bounded by a [startTime, endTime) window. Served from GoldRush’s dedicated HyperCore historical store, so windows past Hyperliquid’s 10,000-fill retention still return data.
On the WebSocket API (wss://hypercore.goldrushdata.com/ws), two new streams with no public Hyperliquid equivalent:
  • allFills - every fill on HyperCore as it executes, batched per block as [address, fill] tuples, with optional coin and aggregateByTime filters.
  • builderFills - every fill routed through one or more builder addresses, with the matched builder and builderFee on each entry.
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