We do participate
@XLayerOfficial Hackathon of
@Uniswap V4 Hook
Our website 👉:
et42.xyz
web3.okx.com/zh-hans/xlayer/…
ET42.XYZ Launchpad: Native Meme Coin Swap Protocol Built on Uniswap V4 Hooks
The core idea is simple: instead of the old fragmented way — deploying a Pair contract first, then routing through a Router — every new meme coin launched on ET42 gets its own Hooked Pool directly inside Uniswap V4’s
PoolManager.By plugging custom logic into key hook callbacks like beforeSwap and afterSwap, the launchpad can enforce all its special rules on-chain in a clean, native way.
Specifically, the Hook handles:
1️⃣Tiered fee collection (platform fee, creator royalty, buyback & burn)
2️⃣Directional fees (different buy/sell taxes, cooldowns, etc.)
3️⃣First-day liquidity protection (minimum reserves, max slippage limits)
4️⃣LP incentive tracking
All of this runs inline as a “plugin” to the pool, powered by Uniswap V4’s Flash Accounting and transient storage — delivering near-native gas efficiency.
From the moment a meme coin is launched, it has real, auditable, and fully composable Uniswap liquidity. No migration needed.
Swaps are governed by the Hook, but the core Uniswap protocol security remains untouched. Later, it can seamlessly integrate with cross-chain DEX aggregators and routers. Clean, efficient, and truly native.
Github Link:
github.com/et42-xyz/ET42
我们参与了
@XLayerOfficial Hackathon黑客松
我们的网站👉:
et42.xyz
ET42 发射台基于 Uniswap V4 的 Hooks 机制构建了原生图币互换协议层。
我们的核心思路是,每个新发射的图币不再走传统"先部署Pair、再挂Router"的割裂路径,而是在 Uniswap V4 的 PoolManager(Singleton) 体系下,以 Hooked Pool 的形式创建流动性池——通过在 beforeSwap / afterSwap 等关键回调点注入自定义逻辑,实现发射台专属规则的链上执行。
具体来讲,Hook 合约在 swap 生命周期中完成手续费分层抽成(发射平台费/创作者分润/回购销毁)、买卖方向差异化费用(如区分Buy/Sell税率或冷却机制)、首日流动性保护(最小储备阈值/最大滑点围栏) 以及 LP 激励记账等功能,所有这些逻辑作为池子的"插件"内联运行,借助 V4 的 Flash Accounting 与瞬态存储实现接近原生的 Gas 效率。
图币从发射那一刻起就拥有可审计、可组合、无需迁移的原生 AMM 流动性,互换行为由 Hook 约束但不牺牲 Uniswap 核心协议的安全性,后续还可无缝接入跨链 Dex 聚合器路由。
合约Github请看:
github.com/et42-xyz/ET42
Video of how it works👇