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Prove Your File Existed First

Drop any file below. We lock its fingerprint to the Bitcoin blockchain — your file never leaves your device.

Mandela Effect Lock: Freeze facts before reality shifts.

Create a proof in your browser. Only a fingerprint leaves this device.

Drop your file here

or click anywhere in this box — photos, documents, videos, anything

  1. Choose any file below.
  2. Wait for the fingerprint to appear (this stays on your computer).
  3. Click Create Bitcoin proof.
  4. Download the .ots proof and keep it with the original file.
File name
—
File size
—
Fingerprint
Ready — this is not your file, only a unique code

No upload. Only a one-way fingerprint leaves this browser.

PROOF CERTIFICATE

Timeline Anchor

File
Fingerprint (SHA-256)
Proof created
Status

This paper records a fingerprint receipt. It is not by itself a Bitcoin confirmation. The file never left this browser. Powered by FactSealAI.

How to check this proof

  1. Keep this with the original file and the .ots proof.
  2. Open https://www.factsealai.com/timeline.html and choose Check a proof. Use the same file and the .ots file.