Polymarket, the on-chain prediction market platform, has announced a significant infrastructure upgrade set to roll out over the next 2–3 weeks. This upgrade includes a complete overhaul of its trading engine and the introduction of Polymarket USD, a native stablecoin pegged 1:1 to USDC. The new CTF Exchange V2 smart contract system will enhance matching efficiency and reduce Gas costs, while the Central Limit Order Book will transition to a hybrid model combining off-chain order matching with on-chain settlement. The upgrade will also support the EIP-1271 standard, allowing multisignature wallets to engage directly in transactions, broadening the platform's appeal to institutional and advanced users. Polymarket plans to clear the existing order book during the upgrade, with a maintenance window announcement expected one week in advance. This move aims to bolster Polymarket's competitive edge in the prediction market sector by enhancing performance and user experience.