Prove you created it first.

Upload a file. Get a legal-grade proof in 60 seconds. Start free.

Free

Free

$0 /month

See what it does. No card needed.

  • 5 proofs per month
  • Digital fingerprint of your file
  • Recorded on the blockchain
  • PDF certificate
  • Shareable verification link
  • Evidence Pack
  • EU-certified legal timestamp (eIDAS)
  • API access
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Cancel anytime · Proofs stay valid forever · Your files never leave your device

📦 What's the Evidence Pack?

A standalone ZIP you can download and keep. It works without us — verify your proof offline, forever.

📄
Certificate & metadata
PDF + JSON with all proof details
⏱️
Timestamp token
Legally signed proof of when it existed
⛓️
Blockchain anchors
Tezos + Aleph — independently verifiable
🔍
Verification scripts
Run locally — no internet, no account needed
See full technical details →