ETH / CRWMN
fee 0%- Swap ETH → CRWMNhook takes 1.00%
- Swap CRWMN → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x1b78ecc91ee4a47906da1e7f75886e9cb9c773c9a1a0f36ca34d056d1b03bcaa
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
14 pools use this hook, the first one 55 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.
Owned by 0xe1ccbB12Ed34Ef21Fda3096dFAf8eA878480E5ae. Owner-style functions: claimFees, claimAllFees, setHookFee, claimable, transferOwnership.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
14 pools over 54 days.
Measured at block 93,032,395. 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 0x1b78ecc91ee4a47906da1e7f75886e9cb9c773c9a1a0f36ca34d056d1b03bcaa
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.