FlywheelV4Hook

EthereumRegistered

Buyback-and-burn hook for a single ETH/token pool. Collects 0.7% fee on ETH buys into a burn pot and queues 0.7% of tokens on sells for burning. Sets a buyback-queued flag every 20 swaps; the buyback-and-burn swap is executed by calling flyWheel() externally. Blocks sells in the same block as a buyback. Restricts pool liquidity to a single initial add only.

0x9ec5a8bb6daaf74abfd9d19b6ff24e1cee1328cc First pool 21 May 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

2mo

Code size

8,668 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.

Gates who can add liquidity

It checks every deposit before it goes in.

Runs at pool creation

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

Safety report

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).

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

✓Source code publishedThe code on the block explorer matches what's deployed (contract: FlywheelV4Hook).

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

iRestricted swapsSwap access: temporal. Not everyone can trade every pool.

?No audit linkedAutomated checks only.

Pools using this hook

2 total

PairCreatedFeePool ID

ETH / EPH 2mo 0.30% 0x3a7b…6f94 Tx ↗

ETH / UNIWHEEL 5mo 1.00% 0x42d0…81b9 Tx ↗