ETH / PLO
fee 0%- Swap ETH → PLOhook takes 4.00%
- Swap PLO → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0xc91db526561fc1007e1c3707ebd07b2943cb96704e89cb0561dabd67ff4bcd81
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
8 pools use this hook, the first one 35 d ago.
The address enables before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 4.00% 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 and no admin functions found.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
8 pools over 35 days.
Measured at block 93,145,589. 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 0xc91db526561fc1007e1c3707ebd07b2943cb96704e89cb0561dabd67ff4bcd81
pool 0x243f0a0f30ffd2e56ae8aebd65ce0326ec1e116a44cef09e208e16c74f0dc461
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.