S15 E19: Alexei Zamyatin on Build on Bitcoin and Layer 2s

Alexei Zamyatin is an academic cryptographer who works on the Build on Bitcoin projects. His approach to scaling Bitcoin with second layers involves some unconventional methods, which he describes in this interview. Zero Knowledge Proofs and Rollups (00:01:21) Discussion of the development of layer two solutions, including zero knowledge proofs and rollups. Defining BitVM Rollups (00:01:58) Explanation of the debate surrounding the definition of zk rollups and the introduction of the new category of BitVM rollups. Citrea's Approach (00:04:41) Analysis of Citrea's zk optimized BitVM rollup and its approach to sidechains and rollups. Zero Knowledge Proofs and Rollups Explained (00:05:26) Explanation of the concepts of zero knowledge proofs and rollups in the context of layer two solutions. Comparison of Rollups and Sidechains (00:12:41) Comparison of sidechains and zk rollups, discussing their differences and promises. The Vision of Build on Bitcoin (00:18:48) Discussion of the problems to be solved in the development of layer two solutions and the vision of the Build on Bitcoin project. EVM: The easiest way to build decentralized applications (00:22:54) Alexei Zamyatin advocates for the ease of building decentralized applications using EVM, while pointing out to the challenges of building infrastructure from scratch. Liquidity and Stablecoins on Rollups (00:23:53) The challenges of bringing stablecoins onto rollups and the dependency on centralized parties for stablecoin provision. Bootstrapping BOB as an ETH Rollup (00:25:47) Alexei xplains the decision to bootstrap BOB as an ETH rollup, inheriting Ethereum security and bridging assets. Pragmatic approach to Bitcoin and Ethereum (00:30:06) Alexei Zamyatin discusses the pragmatic approach to Bitcoin and Ethereum, acknowledging the need to cater to user preferences and solve real-world problems. Building centralized layer on Bitcoin and counterparty models (00:37:03) The trade-offs of building centralized layers on Bitcoin and the limitations of counterparty and other models. Satochip and IVPN ads (00:42:15) Rapid fire presentation of Satochip and IVPN ads. Drivechains proposal and its drawbacks (00:43:20) The Drivechains proposal, its potential usefulness, and the technical details and drawbacks associated with it. Drivechains (00:44:19) Discussion on the activation of drivechains and the need to prove demand for their implementation. Mining and MEV (00:46:29) Exploration of miner extractable value (MEV) and its potential impact on Bitcoin's consensus and mining incentives. Covenants for Bitcoin (00:49:17) The need for covenants in Bitcoin to facilitate the development of sidechains, layer twos, and rollups. Activation Proposals (00:51:06) Debate over the activation of opcode proposals, such as OP_CTV and OP_CAT, and their implications for Bitcoin's development. Following Build on Bitcoin (00:52:47) How to keep up with the Build on Bitcoin project and relevant resources for learning about Bitcoin rollups.