StarkWare supports Polymarket users in placing orders anonymously, launches OffMarket.

BlockBeats news, October 14: StarkWare has opened OffMarket to the public, allowing users to trade on Polymarket without publicly linking their positions to existing accounts. The service has been in limited trial since August, based on zero-knowledge technology and sharing a privacy pool with Starknet. Currently, the deposit limit is 1,000 USDC per account, which will be adjusted based on demand later. Predicted orders are still executed on Polymarket with the same buyers and sellers at the same market prices. The service itself is non-custodial, with user keys remaining in the browser.

Additionally, Polymarket trading records are public on Polygon, where positions, order sizes, and history can be viewed. OffMarket still cannot completely prevent others from inferring trader identities through transaction sizes or timing, as market quotes and trades themselves are also public. This product is not an official Polymarket product, has no formal partnership or special access privileges, is part of Polymarket's verified Builder program, and follows its geographic restrictions, including a ban on U.S. users. Independent compliance firm Financial Privacy Inc. holds the master view key for sanctions screening and disclosure of information under legal requests as required.

L2BEAT data shows that Starknet's shared privacy pool currently holds about $1.5 million with 17,000 deposits.