gHOOD / USDG
fee dynamic, now 0%- Swap gHOOD → USDGhook takes 2.98%
- Swap USDG → gHOODhook takes 2.98%
- Add, then remove liquiditycame back whole
pool 0x9389d59bc8ae3ee7ce0fd55e3bdd51858cc762049391ce65ff12fd1e6f913fa0
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 22 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 2.98% of each swap 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 SETTINGS_DELAY.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 22 days.
Measured at block 93,329,314. 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 0x9389d59bc8ae3ee7ce0fd55e3bdd51858cc762049391ce65ff12fd1e6f913fa0
pool 0xd86aa2d5e6961828f720c98a1133e68eddb866491b94948405c935ced9fa2896
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.