ETH / RHOOD
fee 0%- Swap ETH → RHOODhook takes 1.50%
- Swap RHOOD → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x13a65abbe13d4bd7983475d0e002e3769ce3a3d12b4b8e44f6b31d6087e67c53
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
5 pools use this hook, the first one 97 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 1.50% of each swap 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.
No owner() but it has collect.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
5 pools over 97 days.
Measured at block 93,172,172. 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 0x13a65abbe13d4bd7983475d0e002e3769ce3a3d12b4b8e44f6b31d6087e67c53
pool 0x4fb1b0dc73c8d2151f456b2359c2d37e4c29d622abeab9585f916c0a2affcc17
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.