SPCX / USDG
fee dynamic, now 0%- Swap SPCX → USDGhook takes 0.15%
- Swap USDG → SPCXhook takes 0.15%
- Add, then remove liquiditycame back whole
pool 0xdbd476102c84ca90d501b1330b11e9a6c092ab9a811a7f6a45b1d971872fab13
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
4 pools use this hook, the first one 80 d ago.
The address enables before swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 0.15% 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 paused, transferGovernance.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 80 days.
Measured at block 93,239,425. 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 0xdbd476102c84ca90d501b1330b11e9a6c092ab9a811a7f6a45b1d971872fab13
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.