Zelf Name Service is a wallet architecture powered by ZK- Face Proofs™
Definition Non-interactive, Highly scalable, small proof size, trusted setup through licensing mechanism.
ZelfProof (ZK- Face Proofs™) technology does not rely on conventional zero-knowledge proofs (ZKPs). Yet, it achieves the same objective: verifying the authenticity of a face without revealing any biometric information. By generating a unique ZelfQR, ZelfProof enables a verifier to confirm the face’s authenticity, upon presentation of the correct face. However, much like in ZKP systems, the verifier gains no additional information beyond the validity of the proof - the ZelfQR does not disclose the individual's nor can it be linked. This ensures privacy-preserving and secure identity verification without the need to expose or store biometric data.
Trusted Setup
Trusted setup through a licensing mechanism
Interactivity
Non-interactive, can be verified offline
Proof Size
~ 300 bytes for minimal information
Verification Time
Fast, runs on mobile as well
Scalability
Highly scalable as it can run on the mobile directly without any server computation
Security Assumptions
ZelfQRs are based on Elliptic Curve cryptography. Face Certificates will soon be quantum-safe.
Post-Quantum Security
Face Certificates PQC version are quantum-safe.
Complexity
Simple SDK
Transparency
Trusted setup through a licensing mechanism (not fully transparent).
Use Cases
Verification of functional eID attributes (eKYC) Proof of presence and unique humanness Face-based transaction authentication Face-based signup Face-based login Face-based document/file/disk encryption Face-based document/file signing National IDs/eID with Offline/Online Verification Wallet Security
Suitability for Blockchain
ZelfQR can be integrated into an identity blockchain, such as HyperLedger Indy, via the ZelfEncrypt Distributed Ledger Technology (DLT) protocol. This allows for secure, privacy-preserving identity verification on the blockchain without exposing or storing sensitive biometric data.
