ETH / BRBL
fee 0%- Swap ETH → BRBLhook takes 5.00%
- Swap BRBL → ETHhook takes 5%
- Add, then remove liquiditycame back whole
pool 0x707e5082531fd2c4dd1cb5f68bf43ea1b160bbe0b75176df0d9de1b6b9326a50
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
14 pools use this hook, the first one 28 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 5% of each swap 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.
Owned by 0x0040Aa6FCEf5e21E2535b0C87a1b968c22F1aa41. Owner-style functions: setFactory.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
14 pools over 28 days.
Measured at block 93,033,327. 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 0x707e5082531fd2c4dd1cb5f68bf43ea1b160bbe0b75176df0d9de1b6b9326a50
pool 0x45f1c6e4c7a29f7f4a4d1bb9ab9cb6df69c21ced74a749b91340361445bf59cf
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.