Notarized Origin Certificate
Verify how content was created anytime, anywhere.
What is NOC?
Provenance is the verified history of a piece of content — who made it, when, and how. As AI-generated media becomes indistinguishable from human work, provenance is no longer optional. A Notarized Origin Certificate gives creators a permanent, tamper-evident record that travels with their work.
When you submit a file, NOC embeds an invisible watermark and a visible seal into the file, then issues a signed certificate. The watermark encodes a unique identifier that survives compression and re-upload. Even after platforms strip metadata, the watermark remains — anyone can upload a screenshot or paste a URL into NOC Verify to retrieve the original certificate.
Your certificate is anchored on a public blockchain and cannot be altered or deleted. The NOC Kit includes this notarizer, a verify tool, and publisher resources — everything needed to certify your content, verify others’, and share permanent proof of origin.
Cryptographic Proof Only
No copy of your file will be stored on NOC servers after notarization. The watermarked file will be available for download once, immediately after notarization.
If you lose your copy, it cannot be recovered from NOC. Your certificate and blockchain proof are permanent.
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Your certificate will be issued and is permanent, but without an account you won’t be able to find it in My Content, download it again, or manage it later.