ETH / USDG
fee 0.30%- Swap ETH → USDGnothing taken
- Swap USDG → ETHnothing taken
- Add, then remove liquiditycame back whole
pool 0x9e671f6d0718991741c198df6dadb7a7ca355fe3e6c0b13aaa98cf511a5d273e
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 6 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
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 0.30%, written in the pool key.
Owned by 0x2b778DCF39c8EF205Ab22a4705353cc5a43E6c39. Owner-style functions: transferOwnership, setSweeper.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools, first seen 6 days ago.
Measured at block 93,495,567. 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 0x9e671f6d0718991741c198df6dadb7a7ca355fe3e6c0b13aaa98cf511a5d273e
pool 0x4a8586b22022989b90aca71236144678691af87c4b73fb608bf0bd664006f540
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.