{"podcast":{"title":"Zero Knowledge","slug":"zero-knowledge-1048106","podcast_index_feed_id":1048106,"rss_url":"https://feeds.captivate.fm/zeroknowledge/","website_url":"https://www.zeroknowledge.fm","image_url":"https://artwork.captivate.fm/eed81918-5c2c-4ed4-9ddc-11dbb519e2dd/cover.jpg","author":"Zero Knowledge Podcast","episode_count":420,"summary":"Zero Knowledge is a podcast which goes deep into the tech that will power the emerging decentralised web and the community building this. Covering the latest in zero knowledge research and applications, the open web as well as future technologies and paradigms that promise to change the way we interact — and transact — with one another online. Zero Knowledge is hosted by Anna Rose Follow the show at @ZeroKnowledgefm (https://twitter.com/zeroknowledgefm) or @AnnaRRose (https://twitter.com/AnnaRRose) If you like the Zero Knowledge Podcast: Join us on Telegram (https://t.me/joinchat/TORo7aknkYNLHmCM) Support our Gitcoin Grant (https://gitcoin.co/grants/38/zero-knowledge-podcast) Support us on Patreon (https://www.patreon.com/zeroknowledge) Or directly here: ETH: 0x4BF66E52f3009Cd138e48f142D47661037160001 BTC: 1cafekGa3podM4fBxPSQc6RCEXQNTK8Zz ZEC: t1R2bujRF3Hzte9ALHpMJvY8t5kb9ut9SpQ DOT: 14zPzb7ihiBeaUn9jdPW9cHKGBd9qtTuJE75hhW2CvzLh6rT","last_synced_at":"2026-07-30T02:18:37.841188+00:00","page_url":"https://stenobird.com/podcast/zero-knowledge-1048106"},"episode":{"title":"lean Ethereum Part 4: leanVM, a Custom VM for Signature Aggregation","slug":"lean-ethereum-part-4-leanvm-a-custom-vm-for-signature-aggregation","published_at":"2026-03-11T13:00:00+00:00","page_url":"https://stenobird.com/podcast/zero-knowledge-1048106/lean-ethereum-part-4-leanvm-a-custom-vm-for-signature-aggregation","show_page_url":"https://stenobird.com/podcast/zero-knowledge-1048106","url":"https://zeroknowledge.fm/podcast/394","audio_url":"https://episodes.captivate.fm/episode/28316c49-b48a-43bc-9063-73ccd3256862.mp3","summary":"https://youtu.be/YWkyvTrwtQU   In this episode of the lean Ethereum miniseries, Nico Mohnblatt speaks with Thomas Coratger and Emile from the Ethereum Foundation about the design and implementation of LeanVM, a minimal zkVM created to support post-quantum signature aggregation on Ethereum’s consensus layer. They explain why the team chose a VM architecture over fixed circuits and how LeanVM takes inspiration from Cairo with just 4 opcodes and 2 precompiles to keep the instruction set extremely small and make formal verification easier. The conversation also covers LeanVM implementation choices like using Plonky3 and WHIR for efficient proving on CPUs, benchmarks for aggregation speed, and the role of Python specs in testing client interop. They share ongoing efforts to optimize low-level primitives and invite community input on the project.   Related Links lean Ethereum Part 1: Introduction with Justin Drake lean Ethereum Part 2: PQ Signatures and Poseidon with Dmitry and Benedikt lean Ethereum Part 3: Security of PQ SNARKs and an update about the Proximity Prize lean Ethereum Lean Consensus R&D Progress Cairo zkVM WHIR: Reed–Solomon Proximity Testing with Super-Fast Verification Minimal zkVM for Lean Ethereum by Emile Repos leanEthereum github organization leanSig repo (optimized Rust implementation of XMSS for Ethereum usage) leanSpec repo (the Python spec of the lean consensus) WHIR repo Plonky3 repo leanVM     Applications to speak at zkSummit14 close this Sunday March 15! This edition will be more intimate with limited spots — we recommend applying early. Apply at www.zksummit.com   zkMesh+ live! Subscribe for zkMesh+ and catch the latest State of ZK 2025 report.     **If you like what we do:** * Find all our links here! @Zer…","meta_description":"https://youtu.be/YWkyvTrwtQU In this episode of the lean Ethereum miniseries, Nico Mohnblatt speaks with Thomas Coratger and Emile from the Ethereu…","key_points":[],"chapters":[],"topics":[],"duration_seconds":1975,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/zero-knowledge-1048106/episodes/lean-ethereum-part-4-leanvm-a-custom-vm-for-signature-aggregation/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/zero-knowledge-1048106/lean-ethereum-part-4-leanvm-a-custom-vm-for-signature-aggregation.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}