Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,419,856
0xcdA1…a800
The eight checks
3 pools use this hook, the first one 43 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 swapA swap through it pays the pool fee and nothing else.
- 03n/a
LPs can get outClosed to outside LPs: only the hook's own liquidity is in the pool.
- 04caution
The fee is the feeA fixed fee, but a high one: 2.25%.
- 05caution
No one holds the switchOwned by 0x51ba9bf343b3F906DeFf0c2adB61098a5e168a77. Owner-style functions: setLocker, setLotteryFactory, setTreasury, 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 42 days.
Measured at block 93,419,856. 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 & 0x3fff0x2800 · 10100000000000
- 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.
APE / AMC
fee 2.25%- Swap APE → AMCnothing taken
- Swap AMC → APEnothing taken
- Add, then remove liquiditydeposit refused: LiquidityLocked
pool 0xdea6257789c45d2bde052da9646949b395c85268f577266a3caf5a9fc5fd4077
STRATTON / AMC
fee 2.25%- Swap STRATTON → AMCnothing taken
- Swap AMC → STRATTONnothing taken
- Add, then remove liquiditydeposit refused: LiquidityLocked
pool 0x64fadaa41180d474b8acdeee9bcc4663487e6e8a5d25429349e5c32645fb0a48
Read from the bytecode
- Code size
- 4,371 bytes
- Owner
- 0x51ba9bf343b3F906DeFf0c2adB61098a5e168a77
- 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
- 0x0961712f feeRecipient
- 0x0c8ebb99 feePpmForCreator
- 0x136c77f1 registerPool
- 0x1531ded2 TOTAL_FEE_PPM
- 0x1709667d poolFeePpm
- 0x171060ec
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 add liquidity. Can refuse a deposit, or only let some addresses provide liquidity.
setLocker
0x21d0ee70 beforeRemoveLiquidity0x24c9036d lotteryFactory0x259982e5 beforeAddLiquidity0x476adf3b poolToken0x575e24b4 beforeSwap0x61d027b3 treasury0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x720e302d feePpmFor0x74971ff2 authorizeLiquidity0x8087d3cb setLotteryFactory0x8da5cb5b owner0x9f063efc afterAddLiquidity0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xc4084938 hookFlags0xc4e833ce getHookPermissions0xd7b96d4e locker0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xe1b4af69 afterDonate0xf0f44260 setTreasury0xf2fde38b transferOwnership