YinYangHook

EthereumRegistered

A hook for a twin ERC-20 token pair (Yin/Yang) that mints or empties token "pieces" on each swap based on the swap direction (buy vs. sell), takes a per-swap skim fee forwarded to a configurable destination (with a 20% sniper tax for the first 10 seconds after pool launch), and bootstraps pool state on first liquidity addition.

0x0b68d4e0f9ca8109023ace9aef0f40e8aa9d0444 First pool 31 May 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

5mo

Code size

13,095 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

Can take tokens from swaps

It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.

Safety report

Automated checks, not an audit

✓Not upgradeableNo proxy pattern found: the code is fixed.

✓Listed in Uniswap’s hook registryRegistered with Uniswap Labs (a listing, not a security review).

✓Source code verifiedPublished source matches the deployed code.

iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.

?No audit linkedAutomated checks only.

Pools using this hook

2 total

PairCreatedFeePool ID

ETH / YIN 5mo 0.30% 0x1504…2d33 Tx ↗

ETH / YANG 5mo 0.30% 0x3515…6229 Tx ↗