Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 92,974,420
0xc993…40Cc
The eight checks
18 pools use this hook, the first one 33 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 0.50% 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 0.50%, written in the pool key.
- 05caution
No one holds the switchOwned by 0x28569c1716EF81f307d666A1EC08bDAE92AC0373. Owner-style functions: setFeeKeeper, setPoolLpFee, upgradeToAndCall, setPoolFeePips, collect, UPGRADE_INTERFACE_VERSION.
- 06fail
The code cannot changeIt is a proxy. The code that runs lives at 0xfe4014D1ee20cC77349fAd24C1e9CeA69b03db03.
- 07pass
Only the PoolManager can call itEach callback refused a call that did not come from the PoolManager.
- 08pass
Track record18 pools over 32 days.
Measured at block 92,974,420. 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.
CORGIGG / CORGIGG.d
fee 0.50%- Swap CORGIGG → CORGIGG.dhook takes 0.50%
- Swap CORGIGG.d → CORGIGGhook takes 0.50%
- Add, then remove liquiditycame back whole
pool 0xa9f88e287df2fbb721eaf51ad7354abed40eb21851434f66fc5c5a77a84912f7
ABR.d / ABR
fee 0.50%- Swap ABR.d → ABRhook takes 0.50%
- Swap ABR → ABR.dhook takes 0.50%
- Add, then remove liquiditycame back whole
pool 0xd13cae7d56ec36517d98d07a9150a741a43bedc7e08b780c5bc96239643a6cc8
Read from the bytecode
- Code size
- 14,024 bytes
- Owner
- 0x28569c1716EF81f307d666A1EC08bDAE92AC0373
- Proxy
- yes, code at 0xfe4014D1ee20cC77349fAd24C1e9CeA69b03db03
- DELEGATECALL
- present
- SELFDESTRUCT
- absent
- Outside calls
- 6
- 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.
- 0x01da81d0 commitPoolFeePips
- 0x196ab777 feeRecipientOf
- 0x198fc7cc MAX_DYNAMIC_LP_FEE
- 0x21d0ee70 beforeRemoveLiquidity
- 0x21e5043f setFeeKeeper
- 0x24ff1557
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.
setPoolLpFee
0x259982e5 beforeAddLiquidity0x2b20e397 registrar0x359b4f30 pendingFees0x417cb9f1 FEE_INCREASE_DELAY0x4dbeb3e3 MAX_FEE_PIPS0x4f1ef286 upgradeToAndCall0x52d1902d proxiableUUID0x575e24b4 beforeSwap0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x715018a6 renounceOwnership0x79ba5097 acceptOwnership0x7a8c1085 cancelPendingPoolFeePips0x7c2dfc36 setPoolFeePips0x7ceab3b1 guard0x839197e3 collect0x8da5cb5b owner0x8fd48aff registerPool0x90fc62bc MIN_DYNAMIC_LP_FEE0x91dd7346 unlockCallback0x9759a1a0 getObservation0x9f063efc afterAddLiquidity0xa0d65b6b feePipsOf0xa2fc9df9 pendingFeePipsOf0xaae49d70 PIPS_DENOMINATOR0xad3cb1cc UPGRADE_INTERFACE_VERSION0xb47b2fb1 afterSwap0xb5fc0ff6 setFeeRecipient0xb6a8b0fa beforeDonate0xbb0700ef feeKeeper0xc0c53b8b initialize0xc4e833ce getHookPermissions0xca009983 feePipsEffectiveAt0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xe034fbef increaseObservationCardinalityNext0xe1b4af69 afterDonate0xe26723f0 consultTick0xe30c3978 pendingOwner0xe7a39528 feePipsFor0xead14d7b DEFAULT_DYNAMIC_LP_FEE0xf2fde38b transferOwnership0xf96f97f2 observe0xfaab9d39 setRegistrar