 So thank you everyone Georgius I do product for Sigma and I'm gonna talk to you about how bridges can improve well to composability So let's look at some numbers about the L2 growth. So at the moment, there are more than 20 roll-ups on top of Ethereum and All the total value locked which is a good proxy for user adoption is like around 6 billion which is Around one-fifth of what minute is So that shows like that is going quite well And two of the most important roll-ups like Abritum and Optimus respectively they have more than a hundred and sixty dApps on top, right? However, there are some side effects. So All these protocols and dApps are silos across all these roll-ups. So so the liquidity is fragmented and The end user experience across using all these roll-ups is not so optimal. So it looks like there is a trade-off between low fees and high transaction throughput Overcomposability. So what is composability? it's yeah, in other words is the money Legos like it's what fuel the theorem growth all these years and Yes, we can simply see here is on L1 how our yield aggregator and can use a DEX or how Lending protocol can use a standings protocol I can build on top, right? And as you can see here L1 is yeah There is composability on L1 and all these optimistic or zk roll-ups different ones The there's also composability inside them, but not across them, right? So that's The issue just described Yeah, so as an example these are four of the most popular Protocols and we see that they are developed. They are deployed on Ethereum and the roll-ups and yeah, at least two of the roll-ups But all these deployments are separate from each other, right? They cannot communicate with each other. There is no connection between them so you can see the the L2 ecosystem is Quite huge quite thriving and with all these kind of apps like DEX is yield aggregators NFT marketplace synthetics, but it's fragmented And here's an example use case from from a user perspective, right? So a user has some liquidity on curve, let's say on Arbitrally when a movie to optimism to do that they need at least the 13 transactions like wallet confirmations And they need to wait seven days for extender roll-up And of course they need to pay the exit and the interface right on main net What has been the the role of the bridges so far Apart from the canonical bridges that are at least 10 bridges for roll-up hoping or this So we solved two of the problems So you don't have to wait seven days anymore, and you don't have to pay the enter and exit fees But all these 10 13 separate transactions still exist So what we propose is you know that the bridges should move away from just this year C20 token bridging and Focus more on message passing right so how do you pass messages from an L2 to another L2 or to L1 and Yeah, the end game of that is yeah, you can call them the cross roll up money Legos, right? So it's this is the same Diagram we saw before but now You can basically use a dex on L1 to communicate with derivatives protocol on an L2 right and and all these kind of Seniors over there So yeah, the the benefits of these cross roll up composability from for the end user would be the they don't have to manually breeds anymore for any kind of cross roll up transaction like a token swap or moving the liquidity or any kind of governance actions like voting or market-making or Money market transactions like lending or borrowing not having to move the collateral Or NFT marketplace is they can market the market the NFTs wherever they want in wherever and L2 they want So how this could look like? So this is yeah our proposal like a cross roll up composability layer and you can see on top is one Imagine like one roll up on top and another roll up Below and in the middle is the relay. So it's basically off-chain Relay a network and the main concept here is that you have generic message passing smart contracts developed on both deployed on both roll-ups and You have the so-called Adapter contract which will prepare and parse the necessary messages, right? So this The setup will help any smart contracts from from one open from one roll up to communicate with another roll up or even with layer one Yeah, so That was basically it Lightning talk. Yeah, we can have some question. I don't know how much we have one. Just one question. Yeah. Yeah in case There's a question. How does the relayer maintain? L1 level of security like you mentioned. I didn't mention that it maintains L1 security But yeah, there's several kind of setups, right? So you can you can have a fully trusted setup You can have a trust minimized setup with you know kind of optimistic model Or a zk model. So yeah, I mean if you refer talking for this specific Proposal we're doing, you know, we're starting with a kind of controlled setup and we are exploring Like optimistically, you know Putting the state back on L1 or you know using zk. So this is something they still work in progress Thank you so much big round of applause for your guys in sigma