MOHAR

Transcript

[music] [music] Okay. So, this talk has a question paper. Five questions sealed by an exam body days ago and it leaked. I have it. Which city is hosting Devcon 8? What was Ethereum's 2022 switch to proof of stake called? What is the smallest unit of ether called? Who wrote the Ethereum white paper? Three of these questions are on the real paper. One is made up.

In 4 minutes, scan this QR code and you will know on your own phones who leaked the paper. When I uh Nobody can fake that, not even me. I'm with it. I built Moha and it won the best Indian use case at the archive builder challenge. In five years, India had 41 recruitment exam leagues hitting 1.4 cr applicants. This may need India's national medical exam got cancelled and held again.

Every leak becomes a same fight. When did this paper exist? Screenshots gets called fake and only other clock belongs to the people accused the big idea. So I built a clock nobody controls. Not the exam body, not the leaker, not me. So here's how you're going to catch me. First seal. Before the exam, the exam body seals a fingerprint of every question. It proves the question existed without showing it. Second witness. So, uh, anyone who gets a leak seals its fingerprints from their phone days ago.

And that's what I did. I sealed my own leak. Third, the verdict. At the bill, the paper opens and everyone sees who had questions first and when. Now the topic is why archive because the clock cannot be mine. The time comes from the network not my server and seals can be edited and deleted not even by the exam body. You can guys you guys can scan this and you'll see the verdict on your own phones and let's see if you find the right questions.

Well, we are revealing the paper on archive. Probably the network didn't go in. So, you'll see the video. Oh, it caught. So, yeah, the leak got caught. Three of my question paper. Three of my questions on the uh real paper. The fourth one didn't match the paper. So it was made up. And look at when the network recorded my seal days before exam. Nobody can change it. It's 3 days 15 hours before the exam. So now nobody can change it. [clears throat] Okay.

So what's who is it really for? So the leaker was not me. So my bad. The leaker was me and caught by my own app. But in real life the person ceiling is the student or a journalist or an exam body or a coaching institution on okay so when a journalist gets a paper on telegram the night before exactly so today they have a screenshot but with moa they have an evidence so what's next uh we'll try contacting some exam bodies and let's see what happens you guys can scan it And if there's any question, you can let me know. [music]