Polymarket's hidden linked position feature goes live, StarkWare launches OffMarket

Odaily: StarkWare has opened OffMarket to the public, allowing Polymarket users to trade without publicly linking their positions to existing accounts. The service is built on zero-knowledge technology and a shared privacy pool on Starknet, using a non-custodial model where user keys remain in the browser; each account has a deposit cap of 1,000 USDC, and the pool contract has been audited by OpenZeppelin and formally verified. Orders are still matched on Polymarket at the same buyer-seller and market prices, while trade records, positions, order sizes, and history on Polygon remain public, meaning others may still infer trader identity through trade size or timing. OffMarket is not an official Polymarket product but is part of Polymarket's verified Builder program, and it maintains geographic restrictions including a ban on U.S. users; Financial Privacy Inc. holds the master viewing key for sanctions screening and disclosure under lawful requests. Starknet's shared privacy pool currently holds approximately $1.5 million and 17,000 deposits.