Zero-knowledge attribute verification for European SaaS

What is Tessaliq?

Verify attributes without seeing data

Tessaliq lets your app verify user attributes (age, residency, eligibility) from EUDI Wallet credentials — without ever accessing personal data. Zero-knowledge proofs ensure privacy by design.

How it works

1. Your app creates a verification session via the API
2. The user presents their EUDI Wallet credential
3. A ZK proof is generated and bound to the credential signature
4. You get a yes/no result — no PII touches your servers

Designed for EUDI Wallet credentials

SD-JWT-VC credentials, OpenID4VP protocol, Noir ZK circuits. Built to work with the European Digital Identity Wallet framework.

ZK Proofs (Noir) EUDI Wallet SD-JWT-VC OpenID4VP eIDAS 2.0 Zero PII
API Docs Status GitHub

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Tessaliq — Zero-knowledge attribute verification