Validate a CO2ign Signature

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CO2ign Art includes digital signatures. Read more about how CO2ign Art works.

To check whether an image file has a valid signature, you can upload it here. Note: if the image has been cropped, resized, compressed, or otherwise altered since it was signed, it will invalidate the signature.

If you’re a software developer, you can also add CO2ign Art verification to your own website or application. Contact us to request access to our API, or get updates when our open-source verification library is available.