Crypto Twitter is Wrong: This is How Rollups *Really* Work by Kelvin Fichter | Devcon SEA
Thu, Oct 2, 2025, 12:00 AM
It's 2024, L2s are a critical part of the Ethereum scaling roadmap, and everyone *still* gets Rollups completely wrong. If you think that Optimistic Rollups and ZK Rollups are real things, that Rollups need sequencers to create blocks, or that Rollups need proofs to be secure, you've been completely and utterly bamboozled by the Crypto Twitter intelligentsia. It's time we take back the truth - this is How Rollups *Really* Work. Speaker(s): Kelvin Fichter Skill level: Beginner Track: Layer 2 Keywords: Protocol Design, Layer 2s, Rollups, explainer Follow us: https://twitter.com/efdevcon, https://twitter.com/ethereum, https://warpcast.com/devcon Learn more about devcon: https://www.devcon.org/ Learn more about ethereum: https://ethereum.org/ Visit the https://archive.devcon.org/ to gain access to the entire library of Devcon talks with the ease of filtering, playlists, personalized suggestions, decentralized access on Swarm, IPFS and more. Devcon is the Ethereum conference for developers, researchers, thinkers, and makers. Devcon SEA was held in Bangkok, Thailand on Nov 12 - Nov 15, 2024. Devcon is organized and presented by the Ethereum Foundation. To find out more, please visit https://ethereum.foundation/
Speakers
Sup nerds, I'm Kelvin. I've been working on building L2s in the Optimism universe for the better part of the last six years or so. I also previously did R&D on Plasma, an early model for L2s before Rollups took over. I currently do a variety of things over at OP Labs but generally have a focus on core smart contract development for the OP Stack.