🪶 Sello Génesis

Post-quantum proof that your content existed — and was not backdated.

Hashes your file in your browser (content never leaves), then seals the hash with a Dilithium-2 signature (NIST FIPS 204) + a public drand round (verifiable lower-bound time). Anyone can re-verify the .fseal forever. Proves prior possession & integrity — not authorship, not originality. Not “unbreakable”. Not a patent.