StarkWare Launches OffMarket, Polymarket Users Can Trade Anonymously

On October 14, according to The Block, StarkWare officially opened its OffMarket privacy trading service to the public, allowing users to trade on Polymarket without publicly associating their account identities. The service has been in a limited testing phase since August this year. Built on Starknet zero-knowledge technology and running through a shared privacy pool, it currently holds approximately $1.5 million in funds with over 17,000 cumulative deposits. The current deposit limit per account is 1,000 USDC, and StarkWare stated it will dynamically adjust based on demand. OffMarket operates in a fully non-custodial mode where users hold their own keys. Orders are executed on Polymarket's native markets under the same pricing and fee structures; private order execution takes about 1 minute, while withdrawals take several minutes. Notably, OffMarket is not an official Polymarket product, has no formal partnership with them, and also restricts U.S. users from accessing it.