If you have a certificate issued by us, then it should display a 32-digit ID at its bottom left. To verify the authenticity of the certificate, type that ID in following input.
You can also scan the qr_code QR code on top-left of the certificate to verify it.
+ Each and every certificate issued by Knotters contains a QR code at top left and unique 32-digit ID at its bottom left. + If a certificate shared with you doesn't have an ID or QR code, or it has but isn't being found here, it should be considered invalid. + If you think someone is issuing fake certificates on behalf of us, then please report it to us. + If your own certificate issued by us doesn't have ID and QR code, or it has but isn't being found here, then you may contact us.