YinYangHook

Ethereum

Runs code on every swap. Sets its own swap fee. Runs at pool creation.

0x349412a11ce6e0df9cfde4460585b256cc07a080 First pool 18 Oct 2026View on explorer

BProbably fineNot in Uniswap’s hook registry

Pools

Dynamic-fee pools

Last new pool

18d

Code size

6,380 B

What it can do

Runs code on every swap

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

Sets its own swap fee

Pools using it let the hook choose the swap fee instead of a fixed tier.

Runs at pool creation

It runs when a pool is created, often to lock in that pool’s settings.

Automated checks, not an audit

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

✓No owner foundNo owner() function: nobody has an admin switch (as far as the standard check goes).

!Not in Uniswap’s hook registryUnregistered hooks get less scrutiny. Most scam hooks are unregistered.

✓Source code publishedThe code on the block explorer matches what's deployed (contract: YinYangHook).

?No audit linkedAutomated checks only.

1 total

PairCreatedFeePool ID

ETH / TEST 18d dynamic 0xeefa…5312 Tx ↗