Prove your file existed! A permanent blockchain timestamp of your file's SHA-256 fingerprint. Your file never leaves your device.
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For laptop/PC camera captures may be lower resolution (hold documents sideways for better results).
For sharper document photos, use a phone camera or select a scanned file.
(choose file to continue)
Checkout
Blockchain Proof | Selected blockchain
$1.00 AUD
Signing Key | Selected blockchain
$1.50 AUD
Total
$1.00 AUD
Select payment method
Click "Confirm payment" to save hash to blockchain.
Click "PayPal Checkout" to save hash to blockchain.
Click "Confirm payment" to save hash to blockchain.