RCN / WETH
fee 0%- Swap RCN → WETHno liquidity below the price
- Swap WETH → RCNhook takes 1.00%
- Add, then remove liquiditycame back whole
pool 0x3263d72215ea9d1847a00c89b14f389f6e9d7a20f4ffb6840823c96ed86da08a
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 87 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% 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 claim.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 86 days.
Measured at block 93,364,012. 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 0x3263d72215ea9d1847a00c89b14f389f6e9d7a20f4ffb6840823c96ed86da08a
pool 0x1cada39c16e1ca109c7f5d89fedebd8d11512d1c26c17e907766733112aec6f6
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.