WETH / RELL
fee 5%- Swap WETH → RELLnothing taken
- Swap RELL → WETHnothing taken
- Add, then remove liquiditycame back whole
pool 0xb5ba50ef403b4db9497dcb7111cf6c1c79a5724deba8aef1806d714c89260c23
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 42 d ago.
The address enables before swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
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, but a high one: 5%.
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.
3 pools over 41 days.
Measured at block 93,429,471. 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 0xb5ba50ef403b4db9497dcb7111cf6c1c79a5724deba8aef1806d714c89260c23
pool 0x937b008f32b61925ce7e22044d7d065cc891e23c8065e41d61811f14d0d18a1a
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.