Polymarket which chain?
Polymarket operates on the Polygon blockchain. Specifically: Polygon (MATIC) - The platform is built on Polygon for fast, low-cost transactions.
USDC on Polygon - All trading uses USDC on the Polygon network, not Ethereum mainnet. Smart contracts - Trading mechanics handled via Polygon smart contracts. In March 2026, Polymarket acquired Brahma to simplify its blockchain infrastructure.
Polygon was chosen for scalability and low fees essential for high-frequency trading.