HOOD / SIMO
fee 0%- Swap HOOD → SIMOno liquidity below the price
- Swap SIMO → HOODhook takes 1%
- Add, then remove liquiditycame back whole
pool 0xb1a466f2087e8ade3d786205a9ef32213ef706b12b2565a524cbd6c867f80269
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
31 pools use this hook, the first one 39 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 3% 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() but it has setFactory.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
31 pools over 38 days.
Measured at block 92,950,198. 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 0xb1a466f2087e8ade3d786205a9ef32213ef706b12b2565a524cbd6c867f80269
pool 0x4c18a86a330c4632a26b223188069647a71a562950e078c75309cf03c96d09fb
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.