ETH / Perry
fee 1%- Swap ETH → Perrynothing taken
- Swap Perry → ETHnothing taken
- Add, then remove liquiditycame back whole
pool 0xebba47336e258cd82ce7685d68a967067ae8ba9883d0fd276e287ee5d1e1adb3
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
29 pools use this hook, the first one 42 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
A swap through it pays the pool fee and nothing else.
Liquidity added and removed in the same block came back whole.
A fixed fee of 1%, 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.
29 pools over 41 days.
Measured at block 92,972,906. 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 0xebba47336e258cd82ce7685d68a967067ae8ba9883d0fd276e287ee5d1e1adb3
pool 0x0d7fe87886f65b7497fe234edf562230875321de8b6dd5bc86c30855849c9d79
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.