2 posts tagged with "hip-4"

From the outside, a prediction market is the same thing everywhere. You pay something under a dollar for a claim on an outcome, and if the outcome happens you collect a dollar.

The mechanics underneath are not the same, and the differences are not cosmetic — they determine what you actually own, what it costs to get in and out, and which specific things can go wrong. BT365 runs both Polymarket and Hyperliquid's HIP-4 outcome markets, so this is a comparison from having implemented against each rather than from reading their docs.

Here is a situation with no obviously right answer, which is why it is worth writing about.

You hold a position in an outcome market. It has not resolved. The venue removes the market — the event was cancelled, or the listing was migrated, or the whole set was replaced. The last price it traded at was forty cents. What is your position worth?