Prove your files existed. Prove they're yours.
Timestamp any file on the blockchain in seconds. Get cryptographic proof that's immutable, independently verifiable, and courtroom-ready. Packs from $15, verified plans from $19/mo.
No blockchain expertise required.
How It Works
Four steps. Under 30 seconds. No crypto knowledge needed.
Choose your file
Any file type, any size. Your file never leaves your computer — only its unique SHA-256 fingerprint is processed.
We compute the fingerprint
A SHA-256 hash is generated client-side in your browser. This fingerprint is mathematically unique to your exact file.
Anchored to Polygon blockchain
Your file's fingerprint is permanently recorded on the Polygon blockchain. No one can alter or delete it — ever.
You receive your proof
Every timestamp gives you a PDF certificate and Polygonscan link. Verified instant timestamps add a verified identity badge, and Legal-Grade adds a courtroom-ready evidence package.
Who Uses TimeProof
Creators, professionals, and businesses who need proof — not promises.
Photographers
Prove you took the photo first. Protect your portfolio before sharing with clients.
Musicians
Timestamp every version — demos, stems, final mixes. Prove your creative timeline.
Lawyers
Courtroom-ready Legal-Grade evidence packages. Third parties verify independently.
Developers
Timestamp releases, APIs, and code. Prove prior art against competitors.
Researchers
Establish research priority. Timestamp datasets before publication.
Enterprises
Compliance audit trails, supply chain verification, regulatory filings.
Enterprise-Grade Infrastructure
Try it yourself — hash any file right now
Timestamp any file on the blockchain in seconds. Prove when it existed, prove it hasn't changed.
Try it — drop a file to see its unique SHA-256 fingerprint:
Drop a file here to see its SHA-256 hash
100% local — your file never leaves your browser
No blockchain expertise required.
Packs and Plans That Scale With You
One-time packs start at $15 for scheduled protection. Verified plans start at $19/mo for instant timestamps and Legal-Grade.
Micro Pack
$15
100 credits
Scheduled timestamps for occasional use
Basic Pack
$49
350 credits
More room for recurring scheduled protection
Starter Plan
$19/mo
100 included credits
Includes verification, instant timestamps, and Legal-Grade access