Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,393,637
0x3Cc6…e080
The eight checks
3 pools use this hook, the first one 29 d ago.
- 01pass
Permissions that touch your moneyNone of the permissions that let a hook take from swaps or from LPs are switched on.
- 02pass
What it takes from a swapIt takes 1% on top of the pool fee.
- 03pass
LPs can get outLiquidity added and removed in the same block came back whole.
- 04caution
The fee is the feeIts pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
- 05caution
No one holds the switchOwned by 0x23F91c5cB33bf2D08A102058721Ff39b59DCAAA1. Owner-style functions: setMarketSchedule, setLaunchpad, setHolidayUntil, setTotalCakeThatBatch, transferOwnership.
- 06pass
The code cannot changeNot a proxy, no DELEGATECALL, no SELFDESTRUCT.
- 07pass
Only the PoolManager can call itEach callback refused a call that did not come from the PoolManager.
- 08pass
Track record3 pools over 28 days.
Measured at block 93,393,637. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
What the address allows
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
address & 0x3fff0x2080 · 10000010000000
- bit 13Before initialize
- bit 12After initialize
- bit 11Before add liquidity
- bit 10After add liquidity
- bit 9Before remove liquidity
- bit 8After remove liquidity
- bit 7Before swap
- bit 6After swap
- bit 5Before donate
What it did to a real swap
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.
TEST / AAPL
fee dynamic, now 0%- Swap TEST → AAPLhook takes 1%
- Swap AAPL → TESThook takes 1.00%
- Add, then remove liquiditycame back whole
pool 0x1c6694c3a7845f76b99a1678d1d17f88b8cf75756ed93b137f8de790b858e134
Read from the bytecode
- Code size
- 5,687 bytes
- Owner
- 0x23F91c5cB33bf2D08A102058721Ff39b59DCAAA1
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 0
- Callbacks open to anyone
- none
Its functions, uncensored
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.
- 0x02669b52 launchpad
- 0x0885f732 poolConfig
- 0x1403f3f4 setMarketSchedule
- 0x21d0ee70 beforeRemoveLiquidity
- 0x259982e5 beforeAddLiquidity
- 0x2f50a572 MAX_SNIPE_FEE
bit 4
After donate
bit 3Before swap returns deltabit 2After swap returns deltabit 1After add returns deltabit 0After remove returns delta- Before initialize. Runs once, when a pool is created.
- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.