Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
530 pools use this hook, the first one 72 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
No pool with liquidity to swap through yet.
Liquidity added and removed in the same block came back whole.
Its pools use a dynamic fee that the hook sets. It stands at 0% now and can change.
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.
530 pools over 71 days.
Measured at block 92,890,025. 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 0x221e82a9772c90b1127d2ffc5388f6c07f185c6301e4266742a05b1e068c93ed
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.