Create a Sealed Proof
Anchor a proof of your content permanently on the Bitcoin blockchain
Content
Choose your input type and visibility
Drop a file here, or click to choose (< 2 GB for browser hashing). Files stay on your device.
Private Mode: Your data never leaves this device. The hash is calculated locally in the browser. Only the hash is stored on Bitcoin.
Pricing
Fixed price for all submissions
—
One-time payment
How It Works
1
Write Content
Enter your data and choose visibility settings
2
Pay & Anchor
Choose payment method and wait for Bitcoin confirmation
3
Verify
Download proof and verify on Bitcoin blockchain
Privacy & Security
Public Mode
Data stored on backend and displayed on proof page
Private Mode
Data never leaves your device, only hash is stored