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Post-quantum · on-chain · private

Verifiable Document Notary

Prove a document existed, unaltered, at a point in time — with a post-quantum signature (Dilithium-3, NIST FIPS 204) anchored on-chain. Works for any file: PDF, Word, image.

🔒 Your file never leaves your browser — only its SHA-256 hash is sent.

⬆ Drop a file here, or click to choose
PDF · DOCX · image · anything

Honest scope: proves integrity + existence-time + quantum-resistance of the exact bytes. It does not read the document's content, prove authorship, or replace legal notarization. Full on-chain consensus is our next milestone.

FractalAI · fractalai.net.co