Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,115,547
0x6Ff3…b0cC
The eight checks
8 pools use this hook, the first one 99 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.
- 02n/a
What it takes from a swapNo pool with liquidity to swap through yet.
- 03pass
LPs can get outLiquidity added and removed in the same block came back whole.
- 04caution
The fee is the feeA fixed fee, but a high one: 2%.
- 05caution
No one holds the switchOwned by 0xeE924367213Ae3764b57d5b9a6214c8188d34060. Owner-style functions: setGlobalPaused, claimableFee, setPoolPaused, 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 record8 pools over 98 days.
Measured at block 93,115,547. 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 & 0x3fff0x30cc · 11000011001100
- 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.
USDG / BLEP
fee 2%- Swap USDG → BLEPno liquidity at the current price
- Swap BLEP → USDGno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0x50dcfc84d8801f58244ebc86dc2d0552e7e4b4f676c40515e08527547a65b81a
Read from the bytecode
- Code size
- 16,823 bytes
- Owner
- 0xeE924367213Ae3764b57d5b9a6214c8188d34060
- Proxy
- no
- DELEGATECALL
- absent
- 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.
- 0x037aadbe getPoolConfig
- 0x203813c7 cancelPoolConfigUpdate
- 0x21d0ee70 beforeRemoveLiquidity
- 0x259982e5 beforeAddLiquidity
- 0x28198a5e getVolatilityState
- 0x2d64c847
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.
- After initialize. Runs once, right after a pool is created.
- 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.
unknown
0x2e409784 scheduleTreasuryUpdate0x2ed6b75d pendingTreasury0x328f0617 unknown0x36119be5 MAX_DECAY_PERIOD0x44642edb unknown0x46ec5434 unknown0x551d7cdd unknown0x575e24b4 beforeSwap0x5dd7ca7c creatorTreasury0x61a552dc globalPaused0x681bfb01 unknown0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x715018a6 renounceOwnership0x73a0ee6e unknown0x76cad834 setGlobalPaused0x78f2fb66 unknown0x79ba5097 acceptOwnership0x83fbb704 unknown0x8da5cb5b owner0x91311979 CONFIG_DELAY0x91dd7346 unlockCallback0x9a57f74e acceptTreasuryUpdate0x9f063efc afterAddLiquidity0xa1c59afc claimableFee0xa32759ac setPoolPaused0xaae49d70 PIPS_DENOMINATOR0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xbf72bfe7 getRegisteredCurrencies0xc4e833ce getHookPermissions0xd32f4869 unknown0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xded90fa5 unknown0xe1b4af69 afterDonate0xe30c3978 pendingOwner0xf2fde38b transferOwnership