AMZN / TBWQ
fee 0%- Swap AMZN → TBWQhook takes 1.00%
- Swap TBWQ → AMZNhook takes 1%
- Add, then remove liquiditycame back whole
pool 0xd0b50dd7a149d38656bb36b97236090e8c2726e025296a181b08222b125eb4e5
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
6 pools use this hook, the first one 79 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% 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 sweepPlatform, setFee, sweep, setDistributor.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
6 pools over 78 days.
Measured at block 93,173,730. 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 0xd0b50dd7a149d38656bb36b97236090e8c2726e025296a181b08222b125eb4e5
pool 0x7ee31dd76aaf3060db7e57c7f972efeb2b095f0f1470c4189871f80971d1252e
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.