Episode 88: Accumulators with Ben Fisch

In this week’s episode, we chat with Ben Fisch, Stanford PhD student working in Dan Boneh's applied cryptography group. In our conversation, we dig into accumulators, Merkle trees & vector commitments.

We also learn a bit about the RSA Accumulator Paper – entitled Batching Techniques for Accumulators with Applications to IOPs and Stateless Blockchains – that he co-authored with Benedikt Bünz and touch on some of the ways these RSA accumulators could potentially be used in a blockchain context.

Here are a few previous episodes that might help you prep for this interview:
Merkle Trees https://www.zeroknowledge.fm/57
MPCs https://www.zeroknowledge.fm/60

Here are a few concepts and links we mention:


Thank you to our sponsor this week StarkWare

StarkWare will be presenting the StarkWare Sessions – on Sept 16th in Tel Aviv. The event will bring together some of the brightest minds in zero knowledge research from both the academic and application spheres. Topics that will be discussed are self-custodial trading, STARKs for Layer 1, STARK-friendly hash functions and other cool things you can do with STARK proofs.

Use the code Zkpodcast for 20% off the tickets – > https://starkware.co/starkware-sessions/


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Previous Episodes

Episode 236: Aztec Connect and Private DeFi with Charlie and Joe

In this week’s episode, Anna checks in with Aztec, a ZK-based privacy L2 project. She speaks with Joe Andrews and Lead Engineer, Charles Julian. They discuss some of the team’s most important ZK research and implementations such as Plonk and how bringing privacy to Ethereum could truly change the way we do DeFi. They also discuss Aztec Connect and how it relates to zk.money, the Aztec roadmap with future projects like DSL Noir and Aztec 3, as well as a quick postmortem on the halted Aztec Connect launch.

Episode 235: Mathematical Journeys & Sake with Guillermo Angeris

In this week’s episode we return back to DevConnect in Amsterdam for a conversation between Anna and returning guest Guillermo Angeris of Bain Capital Crypto for a couple of shots of sake and math! They cover Guillermo’s personal journey into math, math history in general, consider how to bring more people into the space and the potential opportunities and downsides of bringing some kinds of math mainstream.

Episode 234: zkEVM with Scroll’s Ye Zhang and Haichen Shen

In this week’s episode, Anna and Tarun chat with Ye Zhang and Haichen Shen, the founders of Scroll – a native zkEVM Layer 2 Solution for Ethereum. They cover Scroll’s founding, the need to scale Ethereum, zkEVM philosophies, use cases and more. They wrap up with an exploration of how DApps and products on top of such as zkEVM may interact with the mainchain and with other applications.

Episode 233: Through the Wormhole with Jump Crypto

In this week’s episode, Anna chats with Rahul Magani, the applied zk lead at Jump Crypto, and Hendrik Hofstadt, project lead at Wormhole Crypto. They look at how Wormhole first came to be, the challenges of interoperability, the design decisions they made in balancing security, speed and functionality, the risks facing these types of solutions, including the famous Wormhole hack, what the future holds and how they aim to explore using zk in bridging.

Episode 232: Cutting Edge ZK Research with Mary Maller

In this week’s episode, Anna and co-host Kobi Gurkan chat with Mary Maller, a ZK Researcher at the Ethereum Foundation. They cover Mary’s journey into cryptography, her work on trusted setups, universal SNARKs, Plookup tables, the work she and Kobi did on aggregatable DKGs, her work at the EF and more.

Episode 231: Argent’s Smart Contract Wallet Design with Julien Niset

In this week’s episode, Anna chats with Julien Niset, co-founder of Argent, about crypto wallets. They explore the history of wallet design, the interfaces we use for the decentralized web, the importance of account abstraction, smart contract wallets and Argent’s bet on ZK rollups.

Episode 230: Designing Optimistic Interoperability with Nomad

In this week’s episode, Anna catches up with Anna Caroll and James Prestwich from Nomad. Together they explore the Nomad optimistic interoperability solution, how it first was developed, what lessons it takes from previous attempts at interoperability and cross-chain bridging, how the system works and more.

Episode 229: Going Cross-Chain with Polkadot’s XCM

In this week’s episode, Anna dives back into the Polkadot world with friend and occasional co-host Rob Habermeier from Parity. They cover XCM – the Cross-Consensus Messaging format – and how XCM allows parachains to speak to one another, passing messages through the validators on the relay chain via XCMP Cross-Chain Message Passing.

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