The oracle for Outcome's markets is the exchange those markets trade on. On 29 August, @Outcomexyz went live as the first third-party HIP-4 deployer on @HyperliquidX mainnet, carrying a 500K $HYPE bond it had self-funded back in May: Twenty-three markets shipped: daily crypto binaries, a three-way on the September FOMC decision, and price contracts written on top of the HIP-3 equity, index and commodity perps. A $1M rewards programme opened alongside it at $200K a month. Until this week HIP-4 was one recurring bitcoin:native binary that validators deployed and settled themselves. It now has a supply side, which means it can finally be measured against @Polymarket, @Kalshi and @trylimitless. → Listing & supply: who is allowed to create a market. Permissionless with a bond (Outcome), curated (Polymarket), exchange-only (Kalshi), fully open with a creator fee (Limitless). → Collateral & risk: what backs a position and where it sits. All four are fully collateralised; the difference is $USDC on HyperCore versus $pUSD on Polygon versus USD held by the exchange versus $USDC on Base. → Resolution source: where the answer comes from. Hyperliquid's own perp mark, UMA, exchange determination, or Pyth with a manual fallback. → Dispute & recourseЮ what happens when the answer is wrong. A slashable bond, an economic dispute with a token vote, regulatory oversight, or nothing at all. → Cost to trade: taker and maker economics. Variance curves at Polymarket and Kalshi, an inverted curve at Limitless, and zero at Outcome because Hyperliquid waived the protocol fee. → Liquidity incentives: whether market-making is paid for out of a fixed pool or out of taker fees. → Margin & adjacency: whether outcomes share collateral with perps and spot, or sit in their own silo.