Laurent Castillo I Signing with Confidence: YOLO to Clear Signing I Ledger I Pragma San Fran 2024

Thu, Oct 2, 2025, 12:00 AM

Join Laurent Castillo, VP of Architecture at Ledger, at Pragma San Francisco 2024 as he discusses how Ledger is revolutionizing blockchain security through clear signing. Laurent explores the risks and pitfalls of blind (YOLO) signing, showcases Ledger's innovative approach with the new ERC-7730 standard, and explains how clear signing dramatically improves user safety and confidence. Discover the future of transaction signing, Ledger’s hardware wallet integrations, and how clear signing will combat phishing and scams on Ethereum and beyond. 00:00 Introduction: Laurent Castillo from Ledger 00:51 Risks of Blind (YOLO) Signing on Blockchain 01:36 What is Blind Signing & Why It's Dangerous 02:15 Shift in Attacks: Phishing & Scam Transactions 02:47 Financial Impact of Blind Signing Attacks 03:22 Clear Signing Explained & Ledger’s Vision 04:36 Evolution of Transaction Signing on Ethereum 05:16 Ledger's Early Solution: Plugins for Clear Signing 06:25 Data-Driven Approach to Improve UX for Signing 07:06 Introducing ERC-7730: A New Clear Signing Standard 07:43 ERC-7730 Goals: A Universal Clear Signing Standard 08:16 Why ABI Alone Isn't Enough for Clear Signing 08:49 Limitations of ABI in User-Friendly Transactions 09:25 How ERC-7730 Complements ABI for Better Clarity 10:10 ERC-7730 Standard Example & Field Customization 10:49 Philosophy of ERC-7730: Simple & Human-Readable 11:25 Optimized for Hardware Wallet Limitations 12:00 ERC-7730 Flexibility for Future Blockchain Trends 12:40 Ledger’s Clear Signing Initiative: End-to-End Tools 13:21 ERC-7730 Standard & Editing Tools Released 13:57 Public Registry & Ledger’s Curation Process 14:35 Ledger Integration & Hardware Wallet UI Support 15:22 Developer Guide: How to Implement ERC-7730 16:05 ERC-7730 at ETHGlobal Hackathon & Developer Tools 16:44 Ledger’s Clear Signing Roadmap & Future Plans 17:21 Accelerating Clear Signing Adoption in Q2 2024 18:18 Addressing Ethereum Account Abstraction Challenges 19:12 Conclusion & Resources for Ledger Clear Signing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇺🇸 *Pragma San Francisco* Pragma San Francisco 2024 was a special gathering of founders and builders that took place October 16th and 17th at The Contemporary Jewish Museum in San Francisco, CA. Pragma San Francisco 2024 was an opportunity discuss the future of web3 and reflect on the past. Watch the full Pragma San Francisco playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh4LcwDpGf_itZrAu7XRNb07&si=3x3y9J3avgNTITUe 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 the Ledger* X: https://x.com/Ledger ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _