# Justin Drake I Ethereum Sharing I Ehtereum Foundation I Pragma London 2024

- Speakers: [Justin Drake](https://streameth.org/speakers/justin-drake)
- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2024-10-09
- Duration: 28:35
- Topics: Ethereum sharing, L2 scaling, rollups, shared sequencing, based sequencing, synchronous composability, data availability, settlement layer, execution sharding, network effects, Justin Drake, Pragma London 2024, Ethereum Foundation, programmable blockchains, ZK proofs, pre-confirmations, super transactions, fragmentation solutions, EVM verification, formal methods, governance synchrony, gas limits, execution environments, L1 proposers, builder centralization, anti-censorship
- Watch: https://streameth.org/watch/yt-_tuiZZfIOaM
- YouTube: https://www.youtube.com/watch?v=_tuiZZfIOaM

## Description

Justin Drake from the Ethereum Foundation presents "Ethereum Sharing" at Pragma London 2024, exploring how blockchain networks can leverage shared Ethereum infrastructure. This talk dives into four key shared modules: settlement, data availability, sequencing, and execution - explaining how they enable security inheritance, network effects, and synchronous composability across L2s.

Learn about emerging concepts like based sequencing, shared pre-confirmations, and the future of programmable execution sharding. Essential viewing for developers building rollups, researchers working on Ethereum scalability, and anyone interested in L2 interoperability solutions.

00:00 - Introduction to Ethereum Sharing Concept
00:55 - Benefits of Shared Ethereum Infrastructure
01:32 - Four Key Modules for Chain Sharing
02:06 - Security and Network Effect Advantages
02:38 - Settlement and Data Availability Modules
03:15 - Introducing Shared Sequencing and Execution
03:52 - Native vs Custom Rollup Execution Models
04:30 - Economic Benefits of Shared Settlement
05:06 - $150B Security Inheritance from Ethereum
05:44 - Synchronous Composability Through Shared Sequencing
06:17 - Unified Pre-Confirmations Across Chains
06:49 - Shared Execution for Fungibility
07:25 - Shared Forking and Governance Benefits
07:59 - Network Effects in Internet of Value
08:36 - Deep Dive: Shared Sequencing Mechanics
09:13 - L1 Proposers as Universal Sequencers
09:51 - Synchronous Composability Explained
10:22 - Super Transactions Across Chains
11:01 - Immediate Asset Transfer Visualization
11:38 - Solving Rollup Fragmentation
12:13 - Realtime Proving and Liquidity Solutions
12:51 - Solana-like UX on Ethereum
13:32 - L1 Proposer Sequencing Economics
14:21 - Based Sequencing Adoption Update
14:55 - Current Projects Implementing Shared Sequencing
15:31 - Future Vision: Shared Execution
16:06 - EVM Verification Pre-compile Concept
16:46 - Formal Verification Challenges
17:21 - Governance Synchrony Benefits
18:00 - Removing Gas Limits with ZK
18:38 - Programmable Execution Sharding
19:14 - Customization Opportunities for Chains
20:29 - Q&A: Timeline for Shared Sequencing
22:55 - Measuring Network Effects
24:05 - Constitution and Social Layer Questions
25:21 - Addressing Centralization Concerns
26:32 - Anti-Censorship Protections
27:11 - Builder Centralization Realities
27:46 - Collusion Infrastructure Risks
28:19 - Simplifying Synchronous Composability

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🇬🇧 *Pragma London*
Pragma London took place at Christchurch Spitalfields in London on March 14, 2024, and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma London playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh7rvaHBM14peT1TwI3QX38p&si=MzGrEYwYjxSQFiFM

ETHGlobal's Pragma series takes place in cities around the world, and is designed to be a different kind of event. Pragma is a one-stage conference with founders-only on stage, bringing together a small group of curated attendees and speakers to discuss the future of web3 and reflect on the past. Ever since we first introduced our new event series Pragma in Tokyo of the spring of 2023, we have been fostering a curated, global community of individuals who deeply care about web3.

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✅ *Follow Justin Drake
X: https://x.com/drakefjustin

✅ *Follow the Ethereum Foundation*
X: https://x.com/ethereum

✅ *Follow ETHGlobal*
X: https://x.com/ETHGlobal​
Warpcast: https://warpcast.com/ethglobal
Website: https://ethglobal.com
YouTube: https://www.youtube.com/c/ETHGlobal 

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