ETH / VSPR
fee 0%- Swap ETH → VSPRhook takes 2.50%
- Swap VSPR → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x50c0a7e12611e50329f800f549e2527bd7240f04375b8e195ec469030eafb269
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
4 pools use this hook, the first one 44 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 2.50% 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.
Owned by 0x5F3FD3Bdd758A8F277d63BFA07e1A71e1508516F. Owner-style functions: claim, setFactory.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 43 days.
Measured at block 93,268,657. 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 0x50c0a7e12611e50329f800f549e2527bd7240f04375b8e195ec469030eafb269
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.