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The Predict page lists World.xyz prediction markets and trades them from the wallet on the hosted fork. It is a wallet product, not a margin-account integration: positions don’t count toward the margin health factor.

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World.xyz markets

World’s market program holds each market’s collateral in CASH, a Token-2022 stablecoin, and mints a YES and a NO outcome token (6 decimals each). Splitting and merging are permissionless: N CASH ⇄ N YES + N NO. A winning outcome token redeems 1 CASH. Market discovery and prices come from mainnet (the latest maker fills), since the fork clones accounts only as they are touched.

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Outcome yield pool

Vanna’s outcome_yield_pool program (4kFzca1u9TUAVK7BjJZ5vVtfJ2QRATs38vN8Bq6qZwG3) lets outcome tokens earn while they wait for resolution:
  1. Outcome tokens bought on an allowlisted market can go into the pool in the same wallet approval. The holder receives pool shares (9 decimals).
  2. A keeper merges matched YES + NO pairs back into CASH, swaps it to USDC, and supplies it to Vanna’s USDC lending pool (lender_supply on the core program).
  3. On redeem, the pool pays from its unmatched outcome tokens first and covers any shortfall from its USDC position.
The allowlist is read on-chain, never hardcoded. Only markets the pool has allowlisted can be deposited.
Predict runs on the hosted mainnet fork with a fork maker standing in for World’s mainnet market makers. It is demo infrastructure, not a live mainnet integration.