Etienne Waldron

ETHGlobal · Aug 9, 2026

In this workshop at ETHGlobal New York 2026, Etienne Waldron (developer relations and product) and Oscar Chaix (product manager) from Ledger present what Ledger is building in the agentic world and lay out the hackathon track. Etienne recaps Ledger, a French company founded in 2014 that makes hardware devices securing cryptocurrencies, having sold over 8 million devices and securing roughly 20% of the world's crypto assets. Its devices are secure by design through a secure element chip and a secure display sitting on top of it, and over 12 years the company has focused on user and developer experience across products like Ledger wallet, clear signing (so users understand what they sign), and the wallet provider for dApp login and signing flows. He frames the new agentic era as one where Ledger is well placed to be the trusted infrastructure. Oscar explains why: agents are useful only if they can act (signing transactions on your behalf), but they are susceptible to prompt injections and hallucinations that can move or lose funds, so Ledger lets you review what an agent is about to do on the trusted display and keeps private keys and credentials in hardware requiring human approval. He walks through the newly launched Ledger agentic stack, built on three pillars: CLIs to interact with a Ledger device from your favorite agent (connect a wallet, check balances, initiate transactions you validate on-device), DMK skills that teach an agent to integrate Ledger into an app or workflow (cutting integration from days or weeks to about five minutes), and apps including a security key app (Fido2 login that gates agent access to sites) and Open PGP for encrypting agent secrets. He live-demos the wallet CLI querying Bitcoin and Ethereum accounts, balances, and gas fees spent, proposing 70/30 ETH/BTC rebalancing swaps that require on-device approval, and simultaneously has Claude integrate the DMK skills into a mock website in about five minutes, showing clear signing and background transaction checks on a connected Ledger Flex. Etienne closes on this year's single track, Agentic x Ledger, with $10,000 in bounties across five prizes for AI products using Ledger as the trust layer (human-in-the-loop for high-risk actions, identity, credential and authentication management, x402 agent payments, and policy-based spending), plus Q&A on lending devices, the emulator, and high-frequency use cases. 00:00 Introduction 00:11 Welcome to the Ledger Workshop 00:33 What Is Ledger 00:59 Why Ledger Devices Are Secure by Design 01:19 The Ledger Product Suite 01:37 Entering the Agentic Era 02:06 Why Agents Need a Trust Layer 02:32 Reviewing Agent Actions on the Device 03:02 The Three Pillars of the Agentic Stack 03:30 DMK Skills for Developers 03:52 Apps: Security Key and Open PGP 04:48 A Mock Site for Agent Transactions 05:21 Asking Claude to Integrate the DMK Skills 05:54 The Wallet CLI Finding Accounts 06:34 Discovering Balances Across Chains 07:26 How the Skills File Is Structured 07:51 Querying Ethereum and Solana Accounts 08:34 Checking Tokens and Gas Fees Spent 09:49 Proposing a 70/30 Rebalancing Swap 10:28 Why Moving Money Needs Device Approval 11:11 Recalculating the Swap Rate 12:11 The Mock Site Now Integrated With DMK 12:32 Handling a Locked Device Gracefully 12:50 Clear Signing and Transaction Check 13:34 Integrating in Minutes 14:21 Executing the Swap 15:12 Recapping What Ledger Launched 15:33 The Agentic x Ledger Track 16:03 Example Use Cases 16:23 Credentials, x402 Payments, and Policy Spending 17:07 The Developer Portal and Docs 17:29 Why Documentation Feedback Matters 17:54 Q&A: Lending Physical Devices 18:30 Q&A: The Emulator vs Real Devices 19:30 Q&A: High-Frequency Use Cases 19:52 Closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ *ETHGlobal New York 2026* This workshop is specifically for ETHGlobal New York 2026, a 3-day hackathon held June 12-14 at the Metropolitan Pavilion, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New York 2026 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh7MZ8T-ict6YshkFDw9WJCu _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow ETHGlobal* X: https://x.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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Jul 9, 2026

In this talk, Brantly Millegan from ETHID shares lessons from 10 years working on the Ethereum identity stack. He opens with his own onchain profile and ENS name, brantly.eth, encouraging everyone to get a name at ens.domains. He traces the story back 50 years to the 1970s invention of public key cryptography, which for the first time let people encrypt messages without exchanging a secret key ahead of time. The US government classified it as too powerful, until Phil Zimmerman and the cypherpunks successfully lobbied in the 1990s to make it legal for public use, enabling e-commerce and HTTPS. The cypherpunks saw public key cryptography as the basis for digital identity, but consumer versions like PGP never broke out because appeals to privacy and liberty alone do not motivate enough people without financial incentive. Brantly explains that Bitcoin (2008) and Ethereum (2015) changed this by using public key cryptography for wallets, accomplishing through economic incentives what cypherpunks could not through appeals to values: the widespread adoption of private keys and a flourishing wallet industry. Vitalik named identity as a use case in the 2014 Ethereum white paper, but many early identity projects failed because they treated identity as a single app when it is really 20 hard problems at once, and because building in a decentralized way is far harder than centralized. The breakthrough was Ethereum Name Service, which started in 2016 and launched in 2017 modeled after DNS for decentralized websites, then crypto payments. In 2021, while on the team, Brantly realized ENS was accidentally your crypto username and profile, the meta use case underlying all the others. He credits ENS's success to not competing directly with DNS, great engineering, and long time horizons, making it extremely Lindy after nine plus years. He covers Sign in with Ethereum (EIP-4361) as a decentralized user-controlled single sign on, the Ethereum Follow Protocol as an onchain social graph, and Ethereum Identity Kit as a React component library. He closes with his core thesis: Ethereum identity is not a single app but the sum of information and relationships across decentralized protocols and open standards, unbundled into smallest viable parts so each can stand, fall, improve, or be replaced independently, making the whole stack more resilient. 00:00 Introduction 00:35 Brantly's Onchain Profile and ENS Name 00:47 Going Back 50 Years to Public Key Cryptography 01:09 What Public Key Cryptography Is 01:38 Why the US Government Classified It 01:52 The Cypherpunks Make It Legal in the 1990s 02:07 Why It Powers E-Commerce and HTTPS 02:28 Cryptography as the Basis for Digital Identity 02:48 Why PGP Never Broke Out 03:14 Bitcoin, Namecoin, and Early Naming 03:33 Identity in the 2014 Ethereum White Paper 04:06 How Crypto Spread Private Keys at Scale 04:38 Why Wallets Keep Getting Better 05:12 Why Early Identity Projects Failed 05:37 Why Decentralized Is Harder Than Centralized 06:12 The Ethereum Name Service Breakthrough 06:30 Realizing ENS Was a Username and Profile 06:59 Why the Username Is the Meta Use Case 07:15 Why ENS Has Succeeded Where Others Failed 07:39 Not Competing Directly With DNS 08:04 Great Engineering and Long Time Horizons 08:36 Why ENS Is Extremely Lindy 08:58 Accidentally Solving Single Sign On 09:26 The Vision of a Decentralized Account for the Internet 09:44 Sign in with Ethereum and EIP-4361 10:07 The Ethereum Follow Protocol Social Graph 10:36 Other Parts of the Identity Stack 10:58 Ethereum Identity Kit for Developers 11:18 What Ethereum Identity Really Is 11:39 Why the Stack Is Decentralized, Not Vertically Integrated 11:58 Why Each Part Can Stand or Fall on Its Own 12:17 Why This Makes the Stack Resilient 12:40 Why We Should Not Take This for Granted 13:06 The Hard Work Behind the Stack Today 13:25 Closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ *ETHConf 2026* ETHConf is a 3 day event for founders, industry leaders, and builders who are excited about the possibilities of building on top of Ethereum. Connect with 2,000+ top innovators in crypto, finance, technology, and policy at our inaugural three-day event packed with showcases, demos, partnerships, and conversations shaping the future of the global economy. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow ETHConf* X: https://x.com/ethconf Website: https://ethconf.com _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🎟️ Get your early bird tickets for ETHConf 2027: https://ethconf.com/2027#tickets 🎤 View the full ETHConf 2026 Speaker Schedule: https://ethconf.com/schedule _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Nov 9, 2025

Ayman Mohammed’s workshop introduces Self Protocol, a decentralized identity solution that eliminates the need for traditional KYC by enabling users to verify personal attributes without exposing sensitive data. Instead of sending full identity documents to third parties, users register once using passports, Aadhaar, or biometric IDs, generating a unique nullifier to ensure civil resistance and privacy. The system uses zero-knowledge proofs (ZKPs)—specifically Groth16 and Circom—to verify attributes like age, nationality, or OFAC compliance, allowing users to disclose only what’s necessary. Self’s registration process anchors identities in an onchain Merkle tree, ensuring anonymity and preventing duplicate sign-ups while maintaining verifiability. During the session, Ayman demonstrates Self’s SDK and QR code verification flow, where users scan a QR to selectively prove claims (e.g., “over 18” or “not from the U.S.”) via the Self mobile app. Developers can integrate this using the onchain SDK, writing custom smart contracts that inherit from SelfVerificationRoot and define hooks for proof verification. Ayman emphasizes onchain verification as the most trustless option, avoiding backend censorship risks. The session concludes with new SDK features like programmatic config creation, scope handling improvements, and simplified contract deployment. Self’s hackathon bounties prioritize onchain integrations with higher rewards to encourage developers to build privacy-preserving verification systems for decentralized apps. 00:02 – Introduction to Self Protocol and session overview 00:29 – Problems with current KYC systems and data security risks 00:54 – Why Self eliminates unnecessary KYC through selective disclosure 01:19 – How Self uses passports as trusted, machine-readable identifiers 02:08 – Nullifiers and civil resistance via identity-based proofs 02:43 – Selective disclosure of personal attributes for privacy 03:03 – Custom claims: age verification and OFAC exclusion checks 03:56 – Aadhaar and biometric ID support for broader global coverage 04:26 – Two-step process: registration and disclosure explained 05:10 – How registration ensures anonymity and prevents duplicate identities 05:41 – Role of trusted execution environments (TEEs) in proof generation 06:14 – Overview of ZK proof stack (Groth16 + Circom) 06:42 – Developer integration using QR codes and SDKs 07:04 – Onchain vs. offchain verification and trust assumptions 07:35 – Hackathon bounties and prize structure for Self integrations 08:14 – Live demo setup: QR-based disclosure of age and country attributes 09:23 – Using the Self app to scan and verify attributes in real time 09:56 – Explanation of Self app builder config and parameters 10:31 – Verification process walkthrough with test network 11:09 – Smart contract example: extending SelfVerificationRoot 11:53 – How to override hooks for proof verification and event logging 12:36 – Matching frontend and contract verification configs 12:56 – Contract deployment setup and configuration example 13:26 – Repository overview: frontend QR code + Solidity contracts 13:55 – Handling multiple ID formats and disclosure data differences 14:21 – Specification nuances: passport vs. Aadhaar data formats 15:13 – New SDK improvements: programmatic config setup and scope handling 16:01 – How the latest update simplifies verification configuration 16:20 – Final notes, Q&A, and booth invitation _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇮🇳 *ETHGlobal New Delhi* This workshop is specifically for ETHGlobal New Delhi, a 3-day hackathon held September 19-21 at the India International Convention & Expo Centre, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New Delhi 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh7zCFW3hBqatZ18rQaYeEJL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Self* X: https://x.com/SelfProtocol ✅ *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

ETHGlobal · Oct 9, 2025

Eric Nakagawa, CEO and co-founder of Self Protocol, explains how zero-knowledge proofs (ZKPs) can revolutionize digital identity verification without compromising privacy. Learn how Self Protocol uses biometric passport NFC chips to create provable identities that verify age, nationality, and OFAC compliance without exposing personal data. Discover practical applications for Web3 projects including airdrops, DeFi compliance, and bot prevention, with live SDK integrations available now. This talk demonstrates how ZK identity solutions can solve real-world problems while maintaining user privacy and security. 00:00 - Introduction: The Problem with Traditional Identity Verification 01:22 - Current Identity Risks: Data Exposure & Centralization 02:56 - Sybil Attacks: The Fake Account Epidemic 04:00 - AI Bots: The Growing Threat to Web3 Authenticity 05:08 - ZK Proofs Explained Through "Where's Waldo" Analogy 06:23 - Introducing Self Protocol: Privacy-Preserving Passport Verification 07:28 - How Biometric Passport Chips Enable Trustless Verification 08:40 - Cryptographic Proofs of Government-Issued Documents 09:48 - Selective Disclosure: Age, Nationality & OFAC Checks 11:31 - Technical Walkthrough: QR Code Verification Flow 12:39 - Linking Provable Facts to Wallets Without Correlation 13:51 - Live Demo: SDK Availability for Hackathon Builders 14:59 - On-Chain vs Off-Chain Proof Implementation Options 15:30 - Use Cases: Airdrops, Social Media, and DeFi Compliance 16:29 - Case Study: ETH Denver Birthday Proof Contest 17:27 - Future Roadmap: Expanding Country Support & Speed 18:37 - ETH Global Hackathon: $10k in Prize Opportunities 19:39 - Closing: Bringing ZK Identity to the Entire Internet _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇹🇼 *Pragma Taipei* Pragma Taipei 2025 was held on April 3rd at POPOP in Taipei, Taiwan and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma Taipei YouTube Playlist here: 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 Eric Nakagawa X: https://x.com/ericnakagawa ✅ Follow Self Protocol X: https://x.com/selfprotocol ✅ Follow Kartik Talwar X: https://x.com/TheRealKartik ✅ Follow ETHGlobal X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/@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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Marek Olszewski

ETHGlobal · Oct 9, 2025

Marek Olszewski, co-founder of Celo and creator of Self Protocol, presents a deep dive into zkPassport and Self Protocol at Pragma Prague 2025. Learn how this decentralized identity solution leverages biometric passports, zero-knowledge proofs (ZKPs), and blockchain to verify identity without compromising privacy. Discover how Self Protocol tackles Sybil resistance, prevents bad actors in DeFi, and distinguishes humans from AI—all while maintaining full decentralization. From NFC passport scanning to on-chain ZK attestations, this talk covers the technical architecture, challenges in production, and real-world applications for Web3 identity. 00:00 - Introduction to Self Protocol by Marek Olszewski 00:44 - Self Protocol Launch at ETH Denver Recap 01:27 - Solving Web3’s Biggest Problems: Sybil Resistance 02:03 - Preventing Bad Actors in DeFi with On-Chain Identity 02:43 - Proving You’re Human in an AI-Driven World 03:48 - Interactive Game: Guess the Country! 04:58 - Why Existing Identity Solutions Fall Short 06:00 - Centralized vs. Decentralized Identity Tradeoffs 06:36 - Why Passports Are Ideal for Decentralized Identity 07:50 - Biometric Passports & NFC Chip Security 08:32 - How Countries Authenticate Passports On-Chain 09:46 - Using ZK Proofs for Privacy-Preserving Verification 10:23 - Proving Citizenship Without Revealing Country 10:58 - Age Verification & OFAC Compliance with ZKPs 12:01 - Self Protocol’s Two-Step Onboarding Flow 12:39 - Scanning Your Passport & NFC Verification 13:14 - Generating ZK Proofs for On-Chain Registration 14:01 - How Self Protocol’s Merkle Tree Works 14:39 - Nullifiers & Commitments for Anti-Sybil 15:56 - Privacy: Hiding Data from Issuing Countries 17:17 - Demo: Proving Attributes to dApps with ZK 18:49 - Technical Deep Dive: ZKP Circuit Design 19:24 - Merkle Exclusion Proofs for OFAC Checks 20:09 - How Self Protocol Protects User Privacy 20:59 - Mobile App & Secure Secret Backup 21:40 - Offloading ZKP Generation to Trusted Hardware 22:59 - Challenges: Choosing a Proving System (R1CS vs. Groth16) 23:38 - Handling 5GB Proving Keys & Ceremony Complexity 24:47 - Why Off-the-Shelf ZK Tools Failed 25:20 - Can AI Help Write ZK Circuits? (Spoiler: Not Yet) 26:02 - Hackathon Use Cases: DeFi, Smart Wallets, Memecoins 26:34 - Closing Remarks & Self Protocol Documentation _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇨🇿 *Pragma Prague* Pragma Prague 2025 was held on May 29th at Holešovice Market in Prague, Czech Republic and was an in-person summit for builders and leaders in the web3 ecosystem. This event was in collaboration with ETH Prague. Watch the full Pragma Prague YouTube Playlist here: 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 Marek Olszewski X: https://x.com/marek_ ✅ Follow Self X: https://x.com/SelfProtocol ✅ Follow Kartik Talwar X: https://x.com/TheRealKartik ✅ Follow ETHGlobal X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/@UCfF9ZO8Ug4xk_AJd4aeT5HA _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Artur Chmaro introduces Vlayer's revolutionary ZK-powered tools for Solidity developers at ETHGlobal Prague 2025. Discover four groundbreaking superpowers: Time Travel (historical state access), Teleport (cross-chain state verification), Web Proofs (private web data verification), and Email Proofs (on-chain email authentication). Learn how to implement these features using familiar Solidity and Foundry tooling, with live demos of Twitter handle verification and Revolut transaction proofs. Perfect for developers building identity solutions, RWA tokenization, or cross-chain applications needing verifiable off-chain data. 00:00 - Introduction to Vlayer's 4 Developer Superpowers 00:51 - Time Travel: Accessing Historical Blockchain State 01:27 - Web Proofs: Private Data Verification with ZK 02:02 - Vlayer's Dual Contract Model: Prover vs Verifier 03:15 - Demo: Reading Historical NFT Ownership Data 04:25 - On-Chain Verification with OnlyVerified Modifier 05:35 - Advanced Time Travel: Calculating Token Averages 06:49 - Supported Chains: Ethereum, Base, Optimism 07:25 - Web Proofs Deep Dive: Revolut & Twitter Examples 09:14 - Browser Extension Demo: TLS Session Notarization 11:07 - Starter Templates & Local Development Setup 12:23 - Live Twitter Handle Verification Demo 14:59 - Data Redaction in ZK Proofs 16:12 - Email Proofs: On-Chain Email Authentication 18:43 - Getting Started: Vlayer CLI & Documentation 21:09 - Q&A: Prover/Verifier Deployment Architecture 22:31 - Chain Compatibility Explained 24:02 - Notary Trust Model & Security Assumptions _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇨🇿 *ETHGlobal Prague* This workshop is specifically for ETHGlobal Prague, a 3-day hackathon held May 30 - June 1 2025, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal Prague 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5Vv-ZobDU2YMWekDFYvOqd&si=SoQ5O2TOAK8RkYf- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Learn how to integrate 0G Storage and 0G Compute into your applications with this ETHGlobal Cannes 2025 workshop led by Udhaykumar Balakrishnan. This walkthrough covers uploading/downloading files to 0G's decentralized storage network and leveraging AI models via 0G Compute's pay-per-use marketplace. Includes starter kits for TypeScript/Go, Swagger API documentation, and live demos of file storage/retrieval and LLM inference. Perfect for developers building scalable, decentralized applications with verifiable AI services. 00:00 - Introduction to 0G Storage (Decentralized, Fast, Scalable) 00:58 - Setting Up 0G Storage SDK (TypeScript/Go Starter Kits) 02:14 - Swagger vs CLI Implementation Options 02:49 - SDK Client Setup (RPC, Private Key, Indexer Configuration) 03:24 - File Upload Process (Merkle Tree, Root Hash Generation) 04:01 - File Download & Verification 04:35 - Live Demo: Uploading/Downloading Files (Panda Image Example) 06:52 - Conclusion & Advanced Usage 07:52 - Introduction to 0G Compute (Decentralized AI Marketplace) 08:15 - SDK Setup & Starter Kit (REST API vs CLI) 09:19 - Ledger Account Creation & Funding 09:51 - Listing Available AI Models (Llama 3.3, DeepSeek) 10:24 - Model Authentication & Metadata Retrieval 10:58 - Sending Queries & Verifying Responses 11:32 - Live Demo: Querying DeepSeek LLM via Swagger UI 13:49 - Balance Management & Refunds _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇫🇷 *ETHGlobal Cannes* This workshop is specifically for ETHGlobal Cannes, a 3-day hackathon held July 4-6, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal Cannes 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5N2DCwhcEshNW9C8knZ1T-&si=Lc-WOyfkAVP2--R4 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Udhaykumar Balakrishnan* X: https://x.com/udhaykumar_bala ✅ *Follow 0G* X: https://x.com/0G_labs ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Kevin Jones

ETHGlobal · Oct 9, 2025

Kevin Jones, Developer Relations Engineer at Edge & Node, presents an overview and live demo of building on Hypergraph, a new framework from The Graph Protocol for developing knowledge graph-based Web3 applications. He covers The Graph’s decentralized data indexing network, subgraphs, Token API, substreams, Firehose, and MCP servers for AI integration. Hypergraph introduces a knowledge graph model with entities, types, properties, and spaces, enabling optimized, structured data storage and curation. It supports both public and private data via a local-first sync server, with selective publishing to IPFS and blockchain. The framework is type-first (TypeScript), AI-friendly, and supports real-time collaboration and governance. Kevin demonstrates creating an academic app using Hypergraph CLI, defining schemas, managing private/public spaces, and publishing data on-chain. He highlights available bounties, resources, and starter templates for hackathon participants, encouraging developers to leverage Hypergraph for innovative Web3 and AI-powered applications. 00:00 Introduction 00:17 About Kevin Jones & The Graph Protocol 00:36 Overview of The Graph: Subgraphs, Token API, Substreams 03:04 MCP Servers & AI Integration 03:53 Developer Resources & Example Repos 04:33 Introduction to Hypergraph 05:15 Knowledge Graphs & Data Modeling 06:26 Spaces, Entities, and Relations 08:01 Public vs Private Data & Sync Server 08:54 Application Architecture & Governance 09:23 TypeScript, AI, and Data Querying 11:06 Publishing Data: Private & Public 12:08 Prizes & Bounties 13:29 Project Ideas & Documentation 14:12 Hypergraph Demo Introduction 14:37 Quickstart & App Templates 15:21 Schema Definition & App Generation 18:40 App Structure & Code Walkthrough 19:40 Running the App & Authentication 21:06 Creating and Publishing Data 21:59 Conclusion & Q&A _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇫🇷 *ETHGlobal Cannes* This workshop is specifically for ETHGlobal Cannes, a 3-day hackathon held July 4-6, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal Cannes 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5N2DCwhcEshNW9C8knZ1T-&si=Lc-WOyfkAVP2--R4 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Kevin Jones* X: https://x.com/cryptomastery_ ✅ *Follow The Graph* X: https://x.com/graphprotocol ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Marcus Rein, Senior Developer Relations at Edge & Node, introduces building on The Graph and Hypergraph at ETH Global. The Graph is a decentralized indexing and querying protocol for blockchain data, featuring 100+ indexers. He outlines $10,000 in hackathon prizes across tracks for building with Token API, Substreams, Subgraphs, Hypergraph, and the GRC20TS library. Hypergraph is a local-first, full-stack Web3 app framework leveraging knowledge graphs for composable, privacy-enabled data. Key features include public/private spaces, end-to-end encryption, standardized IDs, and real-time sync via a sync server. Marcus demos CRUD operations on entities in Hypergraph, showing schema definition, mapping, and front-end integration. He explains how Hypergraph enables collaborative, composable apps with both blockchain and non-financial data, and answers questions on privacy, authentication, data sync, decentralization, and verifiability. He encourages participants to explore use cases like crypto directories, DApp registries, and DAO governance explorers. 00:00 Introduction 00:34 Overview of The Graph and Prizes 01:16 Prize Tracks and GRC20TS Library 02:36 Hypergraph Overview and Features 04:43 Knowledge Graphs Explained 06:14 Spaces: Public and Private Data 07:37 Sync Server and Composability 08:31 Hypergraph Live Demo: Setup 09:25 Exploring Public Spaces and Entities 10:31 Schema, Mapping, and Data Integration 13:49 Adding and Composing Data 14:05 Creating and Publishing Entities 15:20 Managing Private and Public Spaces 16:37 CRUD Operations in Hypergraph 17:52 Composable Apps and Use Cases 18:27 Example Ideas and Docs 19:10 Q&A: Privacy, Sync, and Authentication 21:04 Smart Contracts, Permissions, and Data Storage 22:25 Sync Server, Decentralization, and Verifiability 24:25 Exploring Spaces and Datasets 25:19 Censorship, IPFS, and Final Q&A _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇺🇸 *ETHGlobal New York* This workshop is specifically for ETHGlobal New York, a 3-day hackathon held August 15-17, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New York 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh4Xze0ZeSWCSGsw25clPpvZ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow The Graph* X: https://x.com/graphprotocol ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Matthew Foyle, representing Dynamic, shares insights from judging 300-400 hackathon projects, offering practical tips for building winning projects and lasting products. He emphasizes focusing on core functionality, self-documenting demos, and product polish. Dynamic is presented as a seamless authentication and wallet solution for web3 apps, supporting social logins, embedded wallets, and integrations like Coinbase On-Ramp. Foyle highlights the importance of clear documentation, live doc integrations (MCP server), and using oneshot prompts for AI-assisted development. He showcases standout hackathon projects, discusses best practices for partner bounties, and demonstrates Dynamic’s quick integration process, including customizable onboarding and payment flows. Final advice includes leveraging office hours, prioritizing fun, and iterating based on feedback. Keywords include hackathon, Dynamic, web3, authentication, wallet, Coinbase, documentation, AI, onboarding, partner bounty, and product polish. 00:00 Introduction 00:36 Judging Hackathons & Dynamic Overview 01:15 Dynamic as Authentication & Wallet Solution 02:22 Real-World Integrations & Winning Tips 03:30 Demo Best Practices & Product Focus 04:28 Importance of Polish & Simplicity 05:05 Partner Bounty Strategies 06:00 Standout Hackathon Projects 07:23 Quick Start with Dynamic 08:49 Live Documentation & MCP Server 10:04 Oneshot Prompts & Documentation Features 11:14 Implementation Guides & Integration Tips 11:55 Coinbase On-Ramp Integration 13:24 Pay with Dynamic: Unified Payment Flow 14:25 Judging Realities & Final Advice 15:20 Conclusion _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇺🇸 *ETHGlobal New York* This workshop is specifically for ETHGlobal New York, a 3-day hackathon held August 15-17, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New York 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh4Xze0ZeSWCSGsw25clPpvZ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Dynamic* X: https://x.com/dynamic_xyz ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHBerlin · Sep 4, 2024

ETHBerlin04 May 24-26, 2024, CIC Innovation Campus Technical Workshop: Pedro Gomes - Re-inventing login with Sign-in-with-Ethereum We will learn how powerful SIWE can be used as a tool for building different use-cases such as identity, attestations, permissions and messaging. ETHBerlin04 - https://ethberlin.org A Department of Decentralization event - https://dod.ngo Pedro Gomez, founder of WallConnect, presents a video on "Reinventing Login with SignWithEthereum" and aims to demonstrate live coding. He begins by simplifying the concept of authentication in Web3, emphasizing the transition from traditional login methods to wallet connections and the importance of user convenience with fewer clicks. Pedro explains that Web3 differs from Web2 by empowering users with self-sovereignty through wallets instead of server-based authentication modules. He introduces SignWithEthereum as a standard that ensures proper user verification by signing a simple text message. Pedro delves into the technical specifics of SignWithEthereum, highlighting the need for certain parameters such as domain, address, URI, version, chain ID, nonce, and timestamps. Pedro also discusses the challenges of nonce generation and recommends using open-source libraries like NextAuth for Next.js applications to handle this. He further showcases WalletConnect's Web3Modal library for an improved user experience. The video includes a practical coding session where Pedro builds a private image upload feature using SignWithEthereum for authentication. He guides viewers through setting up a project with Next.js and integrating NextAuth for server-side authentication management. The tutorial covers adding session providers to maintain user state across server-rendered pages and demonstrates how