Polymarket has upgraded exchange stack, introducing new smart contracts, a rebuilt order book, and a new collateral token, Polymarket USD (pUSD). 

The new CTF Exchange V2 improves order matching, fee handling, gas efficiency, and execution reliability, reducing failed trades caused by nonce and balance-check issues.

Collateral has moved from USDC.e to pUSD, a Polygon-based ERC-20 token backed 1:1 by USDC with onchain-enforced reserves, designed to improve settlement efficiency.

👉 x.com/Polymarket/status/2049081739717304490?s=20