ETH / SIGNET
fee 0%- Swap ETH → SIGNEThook takes 1.00%
- Swap SIGNET → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x44688d732ccf74f6005852f5cec1b4fc2c9729e43082a39961f6aa94b63334b4
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
13 pools use this hook, the first one 69 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 1.00% 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 setLaunchpad.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
13 pools over 69 days.
Measured at block 93,031,989. 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 0x44688d732ccf74f6005852f5cec1b4fc2c9729e43082a39961f6aa94b63334b4
pool 0x80b416a14fbbc0d5fe86bf706397deaa2c3d65f22838d6aa27e22cba29c9377a
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.