ETH / 333
fee 0%- Swap ETH → 333hook takes 2.10%
- Swap 333 → ETHhook takes 2.10%
- Add, then remove liquiditycame back whole
pool 0xbf08fc89df30c0a9e8eba25cbc90fc9da230f5b5f18dadda62d0f3d58c62658f
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
4 pools use this hook, the first one 37 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 3.10% of each swap on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0%, written in the pool key.
No owner() but it has setPlatformFeeRecipient, setRouter.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 36 days.
Measured at block 93,297,840. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
A small swap each way and a liquidity round trip, run through the PoolManager and this hook inside a call that is never sent. The pool fee is expected; anything else missing is the hook.
pool 0xbf08fc89df30c0a9e8eba25cbc90fc9da230f5b5f18dadda62d0f3d58c62658f
pool 0xd6861629f9ad8a3bbdef341f81380bce8897a7f6d9f7891154686b44ba879151
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.