Episode 142: Hasu & Georgios on Bitcoin Security & Elastic Block Size Proposals

In this episode, Anna and guest host Georgios chat with Hasu, an independent crypto researcher focused on economics and security, about elastic block size proposals in both Bitcoin and Ethereum.

They cover how Hasu found his way into research as well as the history of the block size BIPs that shaped the ecosystem as well as Ethereum’s EIP 1559

Here are some additional links:
Research paper: A model for Bitcoin’s security and the declining block subsidy
Analysis of EIP-2593 (Escalator)
Analysis of EIP-1559


Thank you to this week’s sponsor Trail of Bits.

Trail of Bits found a bug in yVault that would have allowed an attacker to drain most (if not all) of the pool's assets. They quickly reported the bug to the yVault team and were able to secure the roughly $400K USD held in the system. This bug, which was thankfully caught, highlights the risk stemming from increased complexity caused by composition in the DeFi space. ‘

Generally – DeFi composability is hard. For example, If you integrate multiple tokens, any one token could compromise the security of your entire platform. On the other hand, if you integrate multiple platforms, your protocol could suffer from complex interactions.

If this is a relevant topic for you or the project you work on, reach out to Trail of Bits to arrange a security assessment, or sign up for their Ethereum security office hours.
Here is a link to their blog post “Accidentally stepping on a DeFi lego” https://blog.trailofbits.com/2020/08/05/accidentally-stepping-on-a-defi-lego Contact them here: https://www.trailofbits.com/contact/


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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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