TEST / NVDA
fee 1%- Swap TEST → NVDAnothing taken
- Swap NVDA → TESTnothing taken
- Add, then remove liquiditycame back whole
pool 0xd421d50e72a73fdd82a7a06982eb3a7ec0d9eb6f3539a92512abc04914f94b42
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 18 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.
3 pools over 17 days.
Measured at block 93,420,626. 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 0xd421d50e72a73fdd82a7a06982eb3a7ec0d9eb6f3539a92512abc04914f94b42
pool 0xba2222c3a9a1f5b50b83397ed2e54a42a4414e197860eab4577c6cc50af544da
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.