Contract Addresses (Polygon)

All trading happens through Polymarket's official contracts:

USDC.e:              0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174
Conditional Tokens:  0x4d97dcd97ec945f40cf65f87097ace5ea0476045
CTF Exchange:        0x4bFb41d5B3570DeFd03C39a9A4D8dE6Bd8B8982E
Neg Risk Exchange:   0xC5d563A36AE78145C45a50134d48A1215220f80a

You can verify these are the same contracts used by polymarket.com.