ClipCert: Cryptographic Video Authentication โ Verify Video Authenticity
August 7, 2025
ClipCert is a website to digitally sign videos for verification using cryptographic methods.
The Backstory
Hey there! I built ClipCert because the deepfake problem is genuinely unsettling. It's like, you can't even trust what you're seeing anymore! So I started wondering if cryptography could be part of the solution. Could we offer a way for creators to prove their videos are untampered with? ClipCert's a test run of that idea โ a way for people to sign their videos and then prove that what's presented on YouTube or elsewhere truly matches the original. My initial reaction to the feedback? A mix of understanding and resolve. Some critics pointed out that this is "reinventing the wheel", but I feel ClipCert's focus on ease of use and the urgent need for video authentication makes it a worthwhile pursuit.
How to Play
Upload your video (currently limited to 10-second .mp4 files).ClipCert digitally signs your video with your private key.Share the signed video and its verification link โ anyone can check its integrity!
From The Community: Top Comments
No. Not viable. This is reinventing a 30yo wheel, and trust business for the masses has never become a thing. When did you last see a PGP/GPG signature?
so you upload a video here to "digitally sign it", before you upload it to youtube (for example)
then other people who come across the youtube video can then check the yt video against the clipcert video to see if it's authentic (has the digital signature)
do you actually watch the original videos on clipcert or just upload whatever video you found to see if it has a verified signature?
Would lossy video compression break this? Also, wouldnt this concept already be solved as a simple hash/checksum of the file? Additionally there's no way for you to prove a video isn't ai, only good chance of figuring out if a video has unnatural artifacts, but figuring that out will only strengthen the original ai
The Remix Station
Think this toy has more potential? Vote for your favorite remix idea!
โฐ ClipCert Pro: Timestamping
Add timestamping to the digital signature, providing a verifiable record of the upload time.
0 Votes
๐ ClipCert Social
Integrate ClipCert with social media platforms, enabling direct verification within the social media post.
0 Votes
Frequently Asked Questions
Does ClipCert detect deepfakes?
No, ClipCert doesn't detect deepfakes; it verifies that a video matches its original signed version, helping prove authenticity.
What video formats are supported?
Currently, only 10-second .mp4 videos are supported. Future versions may offer broader format support.