Hart Lambur I Cross Chain Intents with ERC-7683 I Across I Pragma Singapore 2024

Thu, Oct 2, 2025, 12:00 AM

At Pragma Singapore 2024, Hart Lambur, co-founder of Across and UMA, dives into how cross-chain intents are revolutionizing interoperability in Web3. In this visionary talk, Hart introduces ERC-7683, a new standard co-authored with Uniswap to create seamless, fast, and cost-effective cross-chain user experiences. Learn how intent-based architecture enables instant bridging, eliminates latency, improves user experience, and reduces the cost and complexity of moving assets across chains. Hart explains the mechanics behind intent-based bridging, solver networks, and settlement layers, and shares how Across achieves less than 3-second fill times, enabling Web2-like speeds on Ethereum L2s. Discover how this architecture powers future-proof interoperability across L2s, Superchains, Arbitrum Orbit, Optimism, Scroll, Polygon CDK, and more—all while preserving decentralization, security, and scalability. 00:00 Intro to Cross-Chain UX Problems 00:47 Ethereum Scaling Success Post-Dencun 02:03 Bridging UX Is Still Terrible 03:14 What Users Really Want with Interop 04:18 Across Demo and Web2-Like Bridging UX 05:00 Intent-Based UX Integration in dApps 05:33 Why Messaging-Based Bridges Fall Short 07:18 Stop Sending Messages, Use Intents 08:30 Intent Architecture: How It Works 09:36 Intent Layers: Intent, Solver, Settlement 10:44 Across Speed Benchmark vs Stargate 11:57 Security Benefits of Intent Architectures 12:32 Batch Verification Lowers Costs 13:44 Cost Comparison: Intents vs Traditional 14:57 ERC-7683: Standardizing Cross-Chain Intents 16:09 Benefits of Open Standards for Solvers 17:25 Avoiding Ethereum Ecosystem Fragmentation 18:34 Superchain Interop Using ERC-7683 19:11 Across Roadmap: Fast, Cheap, Day-One Intents 20:03 Closing Remarks and Contact _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇸🇬 *Pragma Singapore* Pragma Singapore 2024 was a special gathering of founders and builders that took place September 19, 2024 at the Fullerton Hotel in Singapore. Pragma Singapore 2024 was an opportunity discuss the future of web3 and reflect on the past. Watch the full Pragma Singapore playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh6z0saYJnVdgXWfz-vaoEYx&si=uavhkhF5Kc8XBoLv 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. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Hart Lambur X: https://x.com/hal2001 ✅ *Follow Across* X: https://x.com/AcrossProtocol ✅ *Follow ETHGlobal* X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Are you interested in Ethereum development and entrepreneurship?_ 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _