Originally published at Uniswap v4 Hooks: How They Work and Where They Break. Uniswap v4 went live on January 31, 2025. Nine independent audits covered the core and periphery contracts, and a bug bounty of up to $15.5 million sat on top of that. Four months later, a protocol built on v4 hooks lost roughly $11 million in one exploit chain. That gap is the whole story of v4. The core was built carefully. The extension surface was handed to everyon…
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