PACK / PACK
fee 0.25%- Swap PACK → PACKhook takes 0.50%
- Swap PACK → PACKhook takes 0.50%
- Add, then remove liquiditycame back whole
pool 0x0741ad8d0e3b8d61cd2001f749913b4ef2b346ee164a28e50addbf589f56ce8f
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
53 pools use this hook, the first one 91 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 0.50% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0.25%, written in the pool key.
Owned by 0x4D8E431f3d93B57E3CDd3FA9cc4e6D248678933B. Owner-style functions: transferOwnership, setDeployer, setArenaFeeHelper.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
53 pools over 91 days.
Measured at block 92,923,266. 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 0x0741ad8d0e3b8d61cd2001f749913b4ef2b346ee164a28e50addbf589f56ce8f
pool 0x40ea9b9a214c332349794f7b91e7f770154cc0728c8be2122fc2a83b131214d1
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.