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Speakers: • Angela Ocando is the Developer Community Manager at the Uniswap Foundation, where she supports the growth, decentralization, and sustainability of the Uniswap ecosystem. // TIMESTAMPS // 00:00 - Introduction to Uniswap v4 01:00 - A Brief History of Uniswap: From v1 to v3 02:32 - The Innovation of Concentrated Liquidity in v3 03:55 - Uniswap v4: Singleton Architecture, Hooks, and More 04:33 - How the Singleton Architecture Creates Massive Gas Savings 06:21 - What are Hooks? Attaching Custom Logic to the Swap Lifecycle 07:33 - The 14 Different Hook Functions Explained 08:27 - Brainstorm: Using Hooks for Public Goods Funding 10:27 - The OpenZeppelin v4 Hooks Library: A Tool for Hackers 11:11 - How to Get Support from the Uniswap Foundation 14:47 - Q&A: Can you submit an existing v4 hook project to the hackathon? 16:33 - Hacker Tips: How to Succeed at a Hackathon 17:53 - Why Clear Communication and Aligning Expectations is Key 18:35 - Pro Tip: Use Existing Libraries and Templates 22:41 - Why it's Important to Understand the "Why" Behind the Tech 23:54 - Why You Should Keep Your Hackathon Scope Simple 25:14 - Closing Remarks: "Public Goods are a Must" What makes Uniswap v4 a game-changer for DeFi developers? In this deep-dive workshop, Angela Ocando from the Uniswap Foundation breaks down the core innovations of the protocol's next major iteration. The session covers the move to a "Singleton" architecture, which dramatically reduces gas costs for creating pools and executing multi-hop swaps, and the introduction of "Hooks," a powerful new feature that allows developers to inject custom logic directly into a pool's lifecycle. Angela explains how Hooks unlock a new wave of creativity, enabling everything from on-chain limit orders and dynamic fees to novel mechanisms for public goods funding. This is an essential guide for any developer looking to build on the future of AMMs, complete with actionable ideas and resources - including the OpenZeppelin v4 Hooks Library - to get started right away. This workshop was part of DeFi Devs Day at the Octant DeFi Summit 2025, a two-day event that brought together the brightest minds in the industry to discuss and build the future of decentralized finance. About Octant: Octant is infra for sustainable growth, powered by DeFi and aligned with Ethereum. To date, Octant funding rounds have sustainably funded hundreds of projects (over $7 million USD in grant funding) over 9 epochs, all through staking rewards. Follow the Speaker: • Angela Ocando, Developer Community Manager at Uniswap Foundation: https://x.com/ocandocrypto Follow the Organizations: • Octant: https://x.com/OctantApp • Uniswap Foundation: https://x.com/UniswapFND Keywords: Uniswap, Uniswap v4, Hooks, DeFi, AMM, Singleton Architecture, ERC-6909, DeFi Development, Solidity, Smart Contracts, Public Goods Funding, Hackathon