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3d ago

DocProof - Prove your document existed before you shared it

Prove a document existed at a specific moment. SHA-256 fingerprint + UTC timestamp + PDF certificate. No account, no file storage. $9 one-time.

2mo ago

DocProof - Cryptographic timestamps for documents — no file storage

DocProof proves a document existed at a specific moment — without storing the file. Upload any file → SHA-256 fingerprint computed in memory → file discarded immediately. You get a UTC timestamp, a Proof ID, a shareable verification link, and a PDF certificate. Perfect for founders, freelancers, and developers who need to prove ownership before sharing. $9 one-time per proof — no subscription, no account required.