# Announcing Uniswap V4 With Hayden Adams

*Author: David Hoffman, Ryan Sean Adams*
*Published: Jun 13, 2023*
*Source: https://www.bankless.com/es/announcing-uniswap-v4-with-hayden-adams*

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Hayden Adams joins us to announce the release of Uniswap V4! He walks us through innovations new to Uniswap like hooks and singleton contracts in addition to a new upgrade that can lower gas costs up to 90%.

To launch V4 we need your help, the community, to contribute your opinions and decide the fate of this new protocol.

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## Timestamps:
0:00 Intro

5:56 Introducing Hayden

7:37 V4 Launch Date?

9:12 What Goes Live Today?

10:28 How Far Has Uniswap Come?

12:14 Can Uniswap Get Any Bigger?

13:52 Are Centralized Exchanges Competitors?

16:28 Why Do We Need V4

20:10 V4's Flagship Feature

24:47 Introducing, TWAM

28:29 A New Uniswap Fee Structure

33:57 How V4 Solves Efficiency

38:27 Singleton Contracts

41:08 The Gas Refund

43:29 The Hook Centric Roadmap

46:59 What Rollups Will Uniswap Live On?

51:34 Who Will Be Building Hooks

58:20 Fees On Withdrawals

1:05:35 Why Hooks?

1:10:18 Will Liquidity Migrate To V4?

1:16:34 How V4 Is Like a Centralized Exchange

1:20:47 Is This The Last Uniswap Upgrade?

1:22:38 Has Defi Peaked?

1:30:10 How To Get Started On V4
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