Protocol V2 Mainnet Switchover
Polymarket · Releases & Updates · November 2, 2026
Polymarket moves net new markets to Protocol V2 on Nov 2, 2026, replacing the 2019 Gnosis CTF stack after October canary markets.
Polymarket, the world's largest prediction market, plans to switch net new markets to Polymarket Protocol V2 on November 2, 2026, according to Head of Protocol Rajath Alex. V2 replaces the Gnosis Conditional Tokens Framework (CTF) the platform has used since 2019 with a single ERC-1155 position token contract, pUSD as the only collateral, one exchange (ExchangeV3) and one router for every market type. The modular design supports binary, atomic and incremental neg-risk and combinatorial markets, adds an OracleAggregator with UMA and Chainlink resolution modules, and builds in bridging of positions, collateral and resolutions for a future multi-chain rollout. The code was audited by Cantina, Certora, Quantstamp, SigmaPrime, Zellic and Pashov, formally verified by Certora, and carries a bug bounty of up to $5M. Canary markets run on V2 in production from October 5 to October 30, and a Rust-based Data API V2 ships alongside. The November 2 switchover is described as tentative. App users need no migration beyond approval prompts; existing CTF holdings are not converted, while API, SDK and smart-contract integrators and market makers must follow the V2 migration guide. Key topics: Polymarket V2, prediction markets, CTF migration, pUSD, market makers.