ETH / TEST
fee 0.30%- Swap ETH → TESTnothing taken
- Swap TEST → ETHhook adds 0.05%
- Add, then remove liquiditycame back whole
pool 0xdd59aec3c2cb58a092a9c9390175e267020b73fc19997c09e9429bbd43fd67c9
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
36 pools use this hook, the first one 69 d ago.
The address enables before remove liquidity. The hook is allowed to take; the next two checks measure whether it does.
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.
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.
36 pools over 68 days.
Measured at block 92,921,000. 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 0xdd59aec3c2cb58a092a9c9390175e267020b73fc19997c09e9429bbd43fd67c9
pool 0x1c003dfd382e621e48d4f9a6fc94ab268f864faed3a15b7330f35b6b1c77cae5
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.