Poster: Privacy-Preserving Compliance Checks on Ethereum via Selective Disclosure
Abstract
Digital identity verification often forces a privacy trade-off, where users must disclose sensitive personal data to prove simple eligibility criteria. As blockchain applications integrate with regulated environments, this over-disclosure creates significant risks of data breaches and surveillance. This work proposes a general Selective Disclosure Framework built on Ethereum, designed to decouple attribute verification from identity revelation. By utilizing client-side zk-SNARKs, the framework enables users to prove specific eligibility predicates without revealing underlying identity documents. We present a case study, ZK-Compliance, which implements a functional Grant, Verify, Revoke lifecycle for age verification. Preliminary results indicate that strict compliance requirements can be satisfied with negligible client-side latency (< 200 ms) while preserving the pseudonymous nature of public blockchains.
Cite
@article{arxiv.2602.18539,
title = {Poster: Privacy-Preserving Compliance Checks on Ethereum via Selective Disclosure},
author = {Supriya Khadka and Dhiman Goswami and Sanchari Das},
journal= {arXiv preprint arXiv:2602.18539},
year = {2026}
}