According to @1HowardWu, ZPass uses zero-knowledge proofs to let users prove they are over 18 without revealing their birthdate, enabling privacy-preserving age verification for regulated access, source: @1HowardWu on X, Aug 14, 2025. The post also states users can prove they are not from a sanctioned country without revealing which country they are from, highlighting sanctions compliance checks without exposing personal data, source: @1HowardWu on X, Aug 14, 2025. For traders, the post spotlights concrete ZK identity use cases centered on age and sanctions verification, indicating a compliance-focused product direction relevant to on-chain identity workflows, source: @1HowardWu on X, Aug 14, 2025.