Cryptographic & Zero-Custody Audit

1. Zero-Custody Verification

The audit verified that private keys used for order signing never leave the local client workstation. Static and dynamic binary analysis confirmed that zero outbound network requests transmit sensitive private key data.

2. EIP-712 Typed Data Signatures

All orders posted to the Polymarket Central Limit Order Book (CLOB) strictly adhere to EIP-712 standards. This ensures that the user is signing exact order hashes (asset ID, limit price, expiration salt, maker address) without granting broad ERC-20 token allowance approvals.

3. Reproducible Binary Checksums