WETH / DEEZNUTS
fee dynamic, now 0%- Swap WETH → DEEZNUTShook takes 1.25%
- Swap DEEZNUTS → WETHhook takes 1.25%
- Add, then remove liquiditycame back whole
pool 0xb1acf74b23be94658b1177a2ab4ee7635288be59b3480c64972f42a80bb4ec0b
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
11 pools use this hook, the first one 94 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.
Liquidity added and removed in the same block came back whole.
Its pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
No owner() but it has setLaunchWhitelist.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
11 pools over 94 days.
Measured at block 93,034,134. 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 0xb1acf74b23be94658b1177a2ab4ee7635288be59b3480c64972f42a80bb4ec0b
pool 0xd578313ff6cdbd5dca5476ad132323672899610b9803e0d1ec524ad12c5ad188
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.