QYUPY / fILS
fee 0%- Swap QYUPY → fILSno liquidity below the price
- Swap fILS → QYUPYhook takes 1.25%
- Add, then remove liquiditydeposit refused: Unauthorized
pool 0x5049a65ce7f3e712f395c9652596ba88afaf6b0a06226cc6b27d36862c3e44a1
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 14 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 1.25% of each swap on top of the pool fee.
Closed to outside LPs: only the hook's own liquidity is in the pool.
A fixed fee of 0%, written in the pool key.
No owner() but it has setGraduated.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 14 days.
Measured at block 93,456,634. 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 0x5049a65ce7f3e712f395c9652596ba88afaf6b0a06226cc6b27d36862c3e44a1
pool 0x2a1742be93047f8ce4d2f16444062bc40ab09e5bb0f217e0add9497655416b5b
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.