Episode 61: Statistical modeling of PoS systems with Tarun Chitra

In this episode, we chat with Tarun Chitra about a broad range on topics, from his work on early non-blockchain ASICs, to making models in high frequency trading, and the nuances of statistical modeling of PoS systems in blockchain.

Tarun's new company Gauntlet is building a simulation platform for crypto networks to help developers understand how decisions about security, governance and consensus mechanisms are likely to affect network activity and asset value.

Here are a few of the articles that we discuss:

We also mention a previous episode with Axel Ericsson from Vest that you can find here –> https://www.zeroknowledge.fm/49

For a bit more about Tarun, follow him on Twitter, or check out this Vice Article about his past work at D.E. Shaw Research creating simulation models of glass molecules.


Special thanks to this week's sponsor: Trail of Bits.

If you want to find out more about JP Smith's extreme security challenge we mentioned at the beginning of this episode, you can find his write-up on the Trail of Bits blog here –> What do La Croix, octonions, and Second Life have in common?


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Previous Episodes

Episode 339: TEEs with Andrew Miller

In this week’s episode, Anna and Tarun catch up with Andrew Miller. They cover his early work on consensus, ZK and MPC before switching focus to the topic of his current work: TEEs. They map his evolving opinion on TEEs and explore why they could be seen as an optimal solution to many of the blockchain challenges.

Episode 338: On Trust Infrastructure with Arnaud Schenk

This week Anna and Nico chat with Arnaud Schenk, one of the original co-founders of Aztec and creator of the Polaris Fellowship. They discuss Arnaud’s recent blog post ‘On Trust Infrastructure’, exploring the down sides of a trustless system, the need to make online community building more possible and how programmable cryptography may play a role in these solutions. They explore the history of computer culture, the rejection of institutions by mid-90s internet culture and how the seeds for this were set by the 60s counterculture.

Episode 337: Restaking Research with Naveen & Tarun

In this week’s episode Anna and Tarun chat with Naveen Durvasula about his recent work ‘Robust Restaking Networks’. They discuss Naveen’s early work on matching markets and how this led him to work on mechanism design before exploring how the concepts of restaking were first presented, and how both Naveen and Tarun have been working to better model the mechanisms underpinning restaking, to understand how they work and how they can be optimized.

Episode 336: ZK in Celestia with Connor O’Hara

In this week’s episode, Anna chats with Connor O’Hara from Celestia. After discussing the latest ZK Hack Montréal event where Connor was a judge, they dive into his professional background, the ecosystems he has been a part of and what led him to work on Celestia. They then discuss various ZK-focused initiatives within the Celestia ecosystem.

Episode 335: Groth16, IVC and Formal Verification with Nexus

In this week’s episode, Anna chats with Jens Groth and Daniel Marin from Nexus. They catch up on all things Groth16 with the author himself before diving into a variety topics, such as formal verification in the context of ZKPs, the Nexus architecture, the benefits and challenges of building a system from the ground up, folding and IVC plus the properties these offer in a zkVM context and much more.

Bonus: zkSummit 12

Hey! There is no episode this week, but wanted to share an update about zkSummit 12 – happening on Oct 8 in Lisbon. If you want to join, be sure to apply to attend. If you want to apply to speak, the deadline to apply is Aug 15th. Both application to attend and the application to speak are in the same form that can be found @ www.zksummit.com

Episode 334: ZK Research Update with Joe Bonneau

In this week’s episode, Anna and Guille catch up with Joe Bonneau, Assistant Professor at NYU and Research Partner at a16z crypto research. They discuss the research Joe has been working on since he was last on the show in 2019, including Naysayer proofs, Zero-Knowledge Middleboxes, Sealed-Bid Auctions and other ZK-related research projects to date.

Episode 333: Verifiable SQL, Reckle Trees and ZK Coprocessing with Lagrange Labs

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.

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