MEME / GOGOG
fee 0%- Swap MEME → GOGOGhook takes 1.30%
- Swap GOGOG → MEMEhook takes 1.30%
- Add, then remove liquiditycame back whole
pool 0xb557b545a4862df979a7b8fc6d055d1a1a82baae930f8059a97bb3a141030ad4
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 39 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 1.30% 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 and no admin functions found.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
5 pools over 38 days.
Measured at block 93,206,460. 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 0xb557b545a4862df979a7b8fc6d055d1a1a82baae930f8059a97bb3a141030ad4
pool 0x866e9ea0d970088a9c9a649e6204bd8b7da85afca2fed0b57739950028122a09
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.