ETH / UNCLEAR
fee 0%- Swap ETH → UNCLEARhook takes 1.00%
- Swap UNCLEAR → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x439a4bcfa5768b4f147c91f6a3ff458a274ec107dd05c2c33ed2be65d895b970
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 44 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 1.00% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0%, written in the pool key.
Owned by 0xF5FDA05fcB105b30ef21295F31c3B7B7E3dE86bB. Owner-style functions: setBaseRate, claimAll, claim, setSnareRate, transferOwnership.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 43 days.
Measured at block 93,418,405. 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 0x439a4bcfa5768b4f147c91f6a3ff458a274ec107dd05c2c33ed2be65d895b970
pool 0x974b5e64f35f9c7c794fc3f06af3583a5518832a21ac7d976d3b949c93b989c6
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.