USDG / PROLOGUE
fee dynamic, now 0%- Swap USDG → PROLOGUEhook takes 0.40%
- Swap PROLOGUE → USDGtoo little liquidity to measure
- Add, then remove liquiditycame back whole
pool 0x80ba192b898298faa32e4e84117164d6dbc3f86fa6b01b92eb861d55b51637a5
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
9 pools use this hook, the first one 26 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
It takes 0.40% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
Its pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
No owner() but it has transferGovernance, pause, setGuardian, setPoolFeePpm, paused, setPublisher.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
9 pools over 25 days.
Measured at block 93,088,690. 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 0x80ba192b898298faa32e4e84117164d6dbc3f86fa6b01b92eb861d55b51637a5
pool 0x11acb5c4d1aee12b81b1a32921212293e3fb14687bd2172a346b9a3c443f1b1a
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.