BBC / USDG
fee 3%- Swap BBC → USDGnothing taken
- Swap USDG → BBCnothing taken
- Add, then remove liquiditycame back whole
pool 0x73c3d00070ec58aa8e168839ca8b01ab21741cd0fbe08ba14d1e89e4cff08549
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
12 pools use this hook, the first one 7 d ago.
The address enables before remove liquidity. The hook is allowed to take; the next two checks measure whether it does.
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, but a high one: 3%.
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.
12 pools over 7 days.
Measured at block 93,034,685. 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 0x73c3d00070ec58aa8e168839ca8b01ab21741cd0fbe08ba14d1e89e4cff08549
pool 0x3812b5164ba12bf94f728f43f2be525ff19b97f7698cbb90bbdb56d904eece53
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.