Powered by Hedera Consensus Service

Proof of Existence
Without the Upload

Hash your documents locally. Anchor the proof to Hedera. Verify anytime. Your files never leave your device.

Notarize a DocumentVerify a Document

How It Works

1

Hash Locally

Select any file. We compute its SHA-256 hash in your browser. The file never leaves your device.

2

Anchor to Hedera

Submit the hash to Hedera Consensus Service. Get an immutable, timestamped, and ordered record.

3

Verify Anytime

Upload the same file or paste the hash. We find the matching record and show the consensus timestamp.

Privacy by Design

  • Files are hashed client-side — they never leave your browser
  • Only cryptographic hashes are stored on Hedera
  • Optional private commitment mode for enhanced privacy
  • No accounts, no tracking, no data retention

Ready to Get Started?

Notarize your first document in under a minute.

Get Started