Polymarket Protocol V2: New Contracts Go Live 2 Nov 2026

Polymarket is swapping the smart contracts it has used since 2019 for a new system called Protocol V2, fully live on 2 November 2026. Anyone holding a position or using a wallet linked to Polymarket should know the settlement rules are about to change.

What actually happened

Polymarket Protocol lead Rajath Alex announced Protocol V2 on 10 October 2026, according to Wu Blockchain. The rebuild replaces the Gnosis Conditional Tokens Framework the platform has used since 2019. V2 folds every position into one ERC-1155 token standard and uses pUSD as the sole collateral asset. A single exchange and router will handle binary, negative-risk, and combinatorial markets together. A new OracleAggregator will pull data from several sources, including UMA and Chainlink, instead of relying on one provider. The system also adds a built-in bridge for moving positions across chains. Mainnet testing runs from 5 October to 30 October 2026. Full migration for new markets, plus a Rust-based Data API V2, starts 2 November 2026.

How we got here

Polymarket built its original contracts in 2019 on the Gnosis Conditional Tokens Framework, before prediction markets reached mainstream users. The platform grew into the largest crypto prediction market, covering elections, sports, and cultural events. That growth strained the old setup: separate contracts for each market type, one oracle to trust, and no native way to shift positions between chains. Competitors like Kalshi expanded inside regulated US markets during the same stretch, adding pressure to modernize. Protocol V2 directly addresses those gaps, years after the original design was locked in.

Why this matters for you

For everyday traders, one token standard and one router should mean quicker settlement and fewer failed transactions, no matter the market type. Builders get a ready-made way to launch combinatorial or negative-risk markets without custom code for each one. The OracleAggregator spreads trust across several data sources, a direct response to past disputes over market settlement. A native cross-chain bridge could let positions move between networks more freely, something wallet and lifestyle apps like bonuz may eventually tap into. Anyone with open positions during the 5 to 30 October testing window should check migration steps before 2 November 2026.

The bigger question

Prediction markets lean on a small group of oracle providers to confirm real-world outcomes. If Polymarket's OracleAggregator pulls answers from multiple sources and they disagree, who gets the final say? That question reaches beyond one platform. As more capital moves through on-chain prediction markets, the answer could shape how much users trust any result at all.

What to watch

Mainnet testing for Protocol V2 runs from 5 to 30 October 2026. Full migration to the new contracts, along with the Rust-based Data API V2, begins 2 November 2026. Traders and wallet builders connected to Polymarket should follow migration guidance closely before that date.