Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 92,982,548
0x507a…40cc
The eight checks
26 pools use this hook, the first one 73 d ago.
- 01caution
Permissions that touch your moneyThe address enables before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
- 02pass
What it takes from a swapIt takes 1.00% on top of the pool fee.
- 03pass
LPs can get outLiquidity added and removed in the same block came back whole.
- 04pass
The fee is the feeA fixed fee of 0%, written in the pool key.
- 05caution
No one holds the switchOwned by 0x0Ecf00E3C5A4414f0342e75E099fC2De58Ba0d90. Owner-style functions: claimFees, setReferralRegistry, claimReferralFees, setHookFee, setCreatorShare, claimable.
- 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 record26 pools over 73 days.
Measured at block 92,982,548. 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 & 0x3fff0x00cc · 00000011001100
- 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.
ETH / TEST
fee 0%- Swap ETH → TESThook takes 1.00%
- Swap TEST → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0xcb52b10993763de2e92aa6d55d64f338939542019722509d8d3c7c915698ad61
Read from the bytecode
- Code size
- 11,029 bytes
- Owner
- 0x0Ecf00E3C5A4414f0342e75E099fC2De58Ba0d90
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 9
- 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.
- 0x09824a80 registerToken
- 0x15a0ea6a claimFees
- 0x25aea74a tokenFeeParams
- 0x2dbfa735 claimFees
- 0x4e627e62 referralRegistry
- 0x575e24b4 beforeSwap
- 0x61d027b3
bit 4
After donate
bit 3Before swap returns deltabit 2After swap returns deltabit 1After add returns deltabit 0After remove returns delta- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.
- After swap. Runs after every swap.
- Before swap returns delta. Can take part of what you put into a swap, or change how much is swapped.
- After swap returns delta. Can take part of what you get out of every swap.
treasury
0x6637e38c BPS_DENOM0x6a79115f setReferralRegistry0x715018a6 renounceOwnership0x79692564 claimReferralFees0x79ba5097 acceptOwnership0x8da5cb5b owner0xa62e1a2b CREATOR_SHARE_FLOOR0xa652c57b setHookFee0xb1a25c94 creatorShareBps0xb47b2fb1 afterSwap0xc45a0155 unknown0xc4e833ce getHookPermissions0xc6878f4e MAX_HOOK_FEE_BPS0xc6acbb8f setCreatorShare0xcf893acc claimReferralFees0xd4570c1c claimable0xdc4c90d3 poolManager0xe30c3978 pendingOwner0xe544901f referralClaimable0xea26abcf hookFeeBps0xf0f44260 setTreasury0xf2fde38b transferOwnership