Intro to Building on The Graph and Hypergraph I Marcus Rein

Thu, Oct 2, 2025, 12:00 AM

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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _