RMIN / USDG
fee 0.70%- Swap RMIN → USDGno liquidity below the price
- Swap USDG → RMINhook takes 0.30%
- Add, then remove liquiditycame back whole
pool 0x3773fa7e5025ff8660a21daaca7353a1940ce0730f0b8500b59f2a4379541f5d
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
19 pools use this hook, the first one 53 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 0.30% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0.70%, written in the pool key.
No owner() but it has setFactory.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
19 pools over 53 days.
Measured at block 92,975,511. 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 0x3773fa7e5025ff8660a21daaca7353a1940ce0730f0b8500b59f2a4379541f5d
pool 0x84ae35ee3782777d6558eed8134b324e7167c59e91d18292064e32c1594b6ac3
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.