Episode 151: John Adler on Optimistic vs ZK Rollup and the data availability problem

In this week’s episode Anna chats with Ismael Hishon-Rezaizadeh, Founder and CEO at Lagrange Labs and Charalampos (Babis) Papamanthou, Head of Research at Lagrange and Co-Director of the Applied Cryptography Lab at Yale University.

They revisit the concepts of zk-powered coprocessors and dive into the work that Charalampos did previous to joining Lagrange on Verifiable SQL. They then explore how this is incorporated into the Lagrange coprocessor system, the work they are doing on Reckle Trees, future work and what all this enables for dApp developers. They discuss their new prover marketplace, the general state of infrastructure and how they are keen to bring more concepts from general computing into decentralized blockchain systems.

In this week’s episode, Anna and Tarun sit down with Hart Lambur irl at EthCC week in Brussels. They start by exploring Hart’s project Across – a cross-chain interoperability solution and sister project to Uma. They explore Across’ construction, the tradeoff space and how this compares to other interop solutions. Then, in ZK Podcast tradition, the group shift gears with a few drinks and explore thoughtful observations on the week in Brussels.

In this week’s episode, Anna and Tarun meet with Varun Srinivasan, co-founder of Farcaster. They explore the Farcaster project, discussing the ideas that prompted its inception and what separates it from existing social media networks. The conversation explores the design space that Farcaster opens up for devs and the kinds of applications that can be built on top of it.

In this week’s episode, Anna and Guille chat with Ying Tong Lai and Bryan Gillespie about their latest research and works to date. They get to dive into Ying Tong’s work on Zcash, Geometry Research and Halo2 before exploring Bryan’s journey into ZK via Zcash and current work at Inversed Tech.

After catching up, they dive into the pair’s recent work ‘SoK: Programmable Privacy in Distributed Systems’, exploring the classifications and frameworks being introduced.

In this week’s episode Anna and Nico chat with Alessandro Chiesa, Associate Professor at EPFL and Eylon Yogev, Professor at Bar-Ilan University. They discuss their recent publication; Building Cryptographic Proofs from Hash Functions, which provides a comprehensive and rigorous treatment of cryptographic proofs and goes on to analyze notable constructions of SNARGs based on ideal hash functions.

In this week’s episode, Anna and Tarun chat with Sims Gautam and Liam Eagen from Alpen Labs. They dive into the world of Bitcoin L2s and focus on how ZK can be used to incorporate strong connections between Bitcoin and new execution environments. The group then explores BitVM, covenants, the distinction between the Bridge Operators and sequencers in this model and how this differs from how these actors work in Eth L2s. They then dive into SNARKnado, including what is happening under the hood, the ways in which this system offers round-based fraud games mixed with ZK and which agent provides DA and more.

In this week’s episode Anna chats with Shumo and Yi from NEBRA. They discuss NEBRA UPA, their Universal Proof Aggregation product. They cover what it takes to incorporate proving systems into NEBRA UPA as well as the benefits that these systems will bring, how developers are meant to interact with them, and future integrations to enable seamless cross-zkRollup applications. They cover prover marketplaces, verification aggregation systems, and the design space that these systems open up.