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Grant
Fund: NGI0 Commons Fund
Start: 2026-03
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NGI0 Commons Fund

Verified Credentials with zero-knowledge SPARQL queries

Enabling derived W3C Verifiable Credentials with Zero Knowledge Proof (ZKP)

This project develops a standard way for Verifiable Credential holder services to minimise the amount of data they share with verifier services. This is achieved by enabling holder services to show that a SPARQL query run over the set of credentials holds without disclosing the content of the credential. An example usage of this is enabling car hiring authorities to verify your eligibility to drive in a given country without needing details of your passport, license or citizenship. The project is intended to mature the current prototype and aims towards a W3C Standards Track.

    Run by The Open Data Institute

    Logo NLnet: abstract logo of four people seen from above Logo NGI Zero Commons Fund: letterlogo shaped like a tag

    This project was funded through the NGI0 Commons Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101135429. Additional funding is made available by the Swiss State Secretariat for Education, Research and Innovation (SERI).