Soft Redaction of Image Provenance via Zero-Knowledge Proofs

A new research paper on arXiv (2608.07063) proposes 'soft redaction' for image provenance, using zero-knowledge proofs (ZKPs) to replace sensitive provenance assertions with proofs of selected properties over hidden data. The work addresses the conflict between provenance transparency (e.g., C2PA standards) and privacy, where signed records of origin and editing history may reveal sensitive information. The authors demonstrate distance proofs within ZKP circuits, first for location assertions using Chebyshev polynomial approximations, then for L2 distance proofs over biometric embeddings to support privacy-preserving likeness claims. The approach aims to enforce personality rights while maintaining trust in digital images. The paper is categorized as a cross-type announcement and is available at arxiv.org/abs/2608.07063.