Ostium unveiled Gateway, a whitelisted API and liquidity layer for venues, family offices and pro traders. It follows the $23.75M hack of its LP vault in July.

Pricing moves off-chain, and Ostium targets execution under 100ms, down from more than a second. Traders get one stablecoin margin account with cross-margin and sub-accounts. Access is whitelisted, and withdrawals pass an anomaly check instead of being instant. Ostium says RWAs now make up over 50% of perps volume on many venues, and its own open interest peaked above $370M.

Beta opens to design partners in Q4. Kaledora and Marco will run Ostium as co-CEOs, and the current app keeps working for existing users.

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