ETH / WIF
fee 0%- Swap ETH → WIFhook takes 1.00%
- Swap WIF → ETHhook takes 0.89%
- Add, then remove liquiditycame back whole
pool 0x09b2eb1649372c55eb2e0cab3409c51a6795d026b7c79df0a5844b74a6f6598c
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
5 pools use this hook, the first one 90 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 1.00% 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() but it has withdrawTreasury, withdrawCreator.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
5 pools over 89 days.
Measured at block 93,174,266. 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 0x09b2eb1649372c55eb2e0cab3409c51a6795d026b7c79df0a5844b74a6f6598c
pool 0xe0f4b7fcb6886712d5f287afdf02ca08d283369886f71bf4a94a651879a7088c
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.