ETH / PROBE
fee 1%- Swap ETH → PROBEnothing taken
- Swap PROBE → ETHnothing taken
- Add, then remove liquiditycame back whole
pool 0xea922735ab2eb6df496f0f60901b810a4e2e66fbf0c304d57556bb39b63853ad
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 72 d ago.
The address enables before remove liquidity, before swap returns delta. 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 of 1%, written in the pool key.
No owner() but it has sweep.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 71 days.
Measured at block 93,271,533. 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 0xea922735ab2eb6df496f0f60901b810a4e2e66fbf0c304d57556bb39b63853ad
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.