# ZK-SXG - A simple data disclosure protocol

- Channel: [Edge City](https://streameth.org/edge_city)
- Date: 2024-10-16
- Duration: 05:43
- Watch: https://streameth.org/watch/670fb2ef50c4a85480eb2850
- Download: https://vod-cdn.lp-playback.studio/raw/jxf4iblf6wlsyor6526t4tcmtmqa/catalyst-vod-com/hls/a66cjzckf52rl7oh/720p0.mp4

## Transcript

Yep. Thank you. I need that guy. All right, so our last team up is Cremo Labs. Who's repping? All right. Put that. I actually have a link. Thank you. Hi, guys. I'm Yashwant. I'm from Cremalabs. We are a blockchain research studio. We just, like, hack on weekends. We were, like, planning to, like, accelerate some of our stuff here, like, actually trade on a lot of ideas and a lot of POCs and, like, actually end up, we were planning to accelerate some of our stuff here. Actually iterate on a lot of ideas and a lot of POCs and actually end up doing something for long term. And we were expecting a lot of builder vibe here. And for the next month we are pushing out a lot of products. And this is something we built over the last weekend. I also have a three minute demo. I think we'll do that tomorrow. lot of products. And this is something we built over the last weekend. And yeah, so I also have a three minute demo. I think we'll do that tomorrow. But this is like a small PPT we made out of canvas. So yeah, so blockchains right now. They're not data rich. People are just using it for DeFi purposes. It's like completely, that's the only use case that blockchains should actually be used for, I think. But we are like trying to do like more interesting stuff with it. So people here already know TLS notary to a little extent, I guess. So what they're doing is like they form an MPC with a TLS notary to a little extent, I guess. So what they're doing is, like, they form an MPC with a TLS connection you have with a web server, and they selectively... You selectively get to choose some data that you want to prove to the other guys who are running the TLS server, like the TLS notary server, yeah. So SXG is like something Google wrote a paper upon a few months ago. So, what they were trying to do is like anyone who owns a website can enable this on their Cloudflare DNS and what it basically does is it signs all the responses that your server is serving to a client. And what it basically achieved for them is like someone else want to take your website and like show it on theirs. They can basically verify that it's actually coming from the original site. It's like a very simple concept. we took data from those websites and actually tried to prove it on chain so that you can do anything else with it. Let's say you're a Binance user and let's say there's a project that is offering NFTs to people who own more than let's say 10 BTC on Binance. So what you can basically do is you open your Binance page, you load our extension and select to the exact point where it says you own like 10 BTC on Binance and you basically get a NFT from that platform. This is like a simple idea what you can do with Web2 data on a blockchain, right? So yeah, that was it. We wanted to basically bring anything that is Web 2 to Web 3 and, like, make it verifiable. And also one of the biggest problems you'll face in this process is, like, your web page is, like, basically a 1MB or, like, it's a very big file, and you can't just take all the data and, like, put it on CNN because Ethereum will charge you a very hefty fee, and it's not even possible. There's like a limit to how big of data you can put in a single block. So that's where the ZK part comes in where we basically take your data and also your website data and we make it a succinct proof and it's also veryifiable once in a year. So the PPT, so how it works is like you open your website, you are the prover by the way, you are the client who is accessing the web page. And you basically generate a proof and give it to the verifier. This is a very small and a very simple representation of what is happening. And this is also what we also wanted to achieve with SXDs. And yeah, this is more complex. It's like two more steps, which basically lets you prove any kind of data. And you don't have to do any computation. You can outsource it to some other people. So what can you do with this? This is the more interesting part of what we were