HOUSE OF COLLABORATION
Verify a HoC certificate
Scan the QR code on a House of Collaboration certificate to confirm who it was issued to, what it covers and whether it is still valid.
How to verify
Step 1
Scan the QR code
Use your phone camera on the QR code at the bottom right of the certificate. This page opens and checks it.
Step 2
Compare the details
The page shows who the certificate was issued to and what it covers. Check that this matches the certificate in front of you.
Step 3
Look for Verified
If you see a warning instead, do not rely on the certificate and contact us.
No QR code? Check the status by ID or check the original PDF below.
No QR code? Check the status by ID
Enter the certificate ID printed under the QR code. This shows whether the certificate exists and is still valid. It does not show the name: to confirm the name, scan the QR code or check the PDF.
Have the original PDF? Check the file
Upload the original certificate PDF exactly as it was issued. It is checked in your browser and never leaves your device. Copies that were re-saved, compressed, printed to PDF or edited will not match, even if they look the same. For any other copy, scan the QR code instead.
Frequently asked questions
Who issues HoC certificates?
J3D.AI Labs OÜ in Tallinn, Estonia, the organiser of House of Collaboration. Certificates are issued to participants of HoC delegations and programmes.
What does Verified mean?
The certificate was issued by House of Collaboration to the person shown, its details are unchanged, and it is still valid.
The details on this page do not match the certificate. What now?
The certificate was most likely altered. Do not rely on it, and let us know at primary@j3d.ai.
What does Replaced by a newer version mean?
The certificate was corrected and reissued, for example to fix the spelling of a name. Ask the holder for the current version.
What does Revoked mean?
The certificate was withdrawn by the issuer and is no longer valid.
I only have a screenshot or a printout.
Scan the QR code on it. If the code cannot be read, check the status by ID and ask the holder for the original PDF to confirm the name.
Is my PDF uploaded when I check it?
No. The check runs in your browser and the file never leaves your device.
Why does my PDF not match?
Only the original file works. Saving it again, compressing it, printing it to PDF or editing it creates a different file, even if it looks identical. Renaming it is fine. If the file does not match, scan the QR code instead.
Can anyone look up my details?
No. Your details are only shown to someone who has your certificate and its QR code. Without it, this site only shows whether a certificate ID exists and is valid.
I received a certificate. How do I share it?
Share the PDF, or the link behind its QR code, for example on LinkedIn. Anyone you share it with can verify it here. If you prefer to keep your details private, share it without the QR code; others will then need the original PDF to verify it.
My details need correcting.
Email primary@j3d.ai with your certificate ID. We will reissue a corrected certificate.
How do I know this page is official?
House of Collaboration certificates are verified only at hocverify.j3d.ai. Check the address in your browser before you rely on a result.
Check the address: genuine checks happen only at hocverify.j3d.ai. A QR code on a certificate could point to a lookalike site, so type the address yourself if in doubt.
Privacy: a certificate's details are only shown to someone who has the certificate and its QR code. Without it, this site only confirms whether a certificate ID exists and is valid.