How It Works
π€ 1. Upload
Select any document, image, or file. We locally calculate its unique SHA-256 digital fingerprint (Hash).
βοΈ 2. Timestamp
We anchor this unique fingerprint to the Polygon Blockchain. Your actual file never leaves your privacy.
π 3. Certificate
You receive a downloadable PDF certificate and a permanent blockchain link proving your ownership.
Frequently Asked Questions
π Do you store my files?
No. Never. We only process the cryptographic hash. Your original file content remains private and secure on your device.
βοΈ Is this legally binding?
It acts as strong "Proof of Existence" (PoE). It technically proves that a specific file existed at a specific point in time.
π° Why is it free?
We are currently in Beta. We cover the small Polygon network gas fees to help users experience blockchain security.
βοΈ Can I edit the file?
No. Changing even a single pixel or comma will change the Hash, breaking the proof. Keep your original file safe.
π€ Do I need an account?
No. We believe in privacy and simplicity. You can seal your documents instantly without any sign-up or login.
β³ How long is the proof valid?
Forever. The Polygon Blockchain is immutable. Even if this website disappears, your proof remains on the blockchain eternally.