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SealZero lets you prove image and document authenticity using zero-knowledge proofs — fully client-side.
You can selectively mask sensitive parts of a document, share the modified version, and provide a cryptographic proof that guarantees authenticity and integrity.
No data ever leaves the browser.
Proof size is under 11kB.
Open-source and built for real-world use.
SealZeroZero-knowledge proofs for authentic, privacy-safe images
Piotr Styłaleft a comment
Hey PH 👋 SealZero started from reading the PETS 2025 paper “VIMz: Private Proofs of Image Manipulation using Folding-based zkSNARKs” by Stefan Dziembowski, Shahriar Ebrahimi, and Parisa Hassanizadeh. I was curious how these ideas could move from theory into something actually usable. Working daily with sensitive HR documents, I know how hard it is to share redacted files while still proving...
SealZeroZero-knowledge proofs for authentic, privacy-safe images