WETH / KT
fee 0%- Swap WETH → KThook takes 1.00%
- Swap KT → WETHhook takes 1%
- Add, then remove liquiditycame back whole
pool 0x895935d91d8e34ed53c05d11626298fafbe8e4f1b2571d22a6e13d1900838af4
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 101 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.
Owned by 0xb13976115E5c20Da099b4dA54f05a86E81468d8c. Owner-style functions: setFactory, transferOwnership.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 101 days.
Measured at block 93,396,027. 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 0x895935d91d8e34ed53c05d11626298fafbe8e4f1b2571d22a6e13d1900838af4
pool 0x3e7b686c33cd764c5fd731127a6ca0eff2cfa5f03e752ca334dac8be49a8e626
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.