CODEX AIM

Verify a document

Drag the PDF you received here. We check its fingerprint against the seal anchored in Bitcoin — and tell you whether it’s authentic or has been modified.

⤓

Drag the PDF here or tap to choose it

A photo of the document also works on mobile

or paste the seal

Have the document’s seal (code)? Paste it:

🔒Your file never leaves your device. The fingerprint is computed here, in your browser; only that code travels to the server, never the document.

Verification with no account and trusting no one · what is CODEX