WETH / Poomps
fee 1%- Swap WETH → Poompsnothing taken
- Swap Poomps → WETHnothing taken
- Add, then remove liquiditycame back whole
pool 0xbf82c48d4949d24ee4fc093ed4bd5c35eeab97b79f6d643e6bcfbd9ca1b40b78
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
87 pools use this hook, the first one 96 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
A swap through it pays the pool fee and nothing else.
Liquidity added and removed in the same block came back whole.
A fixed fee of 1%, 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.
87 pools over 95 days.
Measured at block 92,889,084. 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 0xbf82c48d4949d24ee4fc093ed4bd5c35eeab97b79f6d643e6bcfbd9ca1b40b78
pool 0xa8b0cbc998392ce1328dace7315244096147cc1c8909b2c367c0dcfec4bc3b17
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.