zkPass is a protocol for private data verification, utilizing technologies such as Multi-Party Computation (MPC), Zero-Knowledge Proofs (ZKP), and three-party Transport Layer Security (3P-TLS). It offers a service called TransGate, enabling users to validate their data on HTTPS websites for the Web3 sector, without disclosing sensitive personal data. The protocol covers data types like legal identity, financial records, healthcare information, and education. It also provides a decentralized MPC node network to prevent data tampering during verification.