CHUMP / USDG
fee dynamic, now 0%- Swap CHUMP → USDGno liquidity at the current price
- Swap USDG → CHUMPno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0x140690d8cfb98fa2eff03352ac7f2733b15c5914705c142afc8fe91db3ea5c9b
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
52 pools use this hook, the first one 45 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.
No pool with liquidity to swap through yet.
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 withdrawFromFRLM, setReinvestmentPaused.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
52 pools over 45 days.
Measured at block 92,951,276. 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 0x140690d8cfb98fa2eff03352ac7f2733b15c5914705c142afc8fe91db3ea5c9b
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.