Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,146,945
0xa6E4…a888
The eight checks
7 pools use this hook, the first one 57 d ago.
- 01caution
Permissions that touch your moneyThe address enables before 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.
- 03n/a
LPs can get outClosed to outside LPs: only the hook's own liquidity is in the pool.
- 04pass
The fee is the feeA fixed fee of 0%, written in the pool key.
- 05caution
No one holds the switchOwned by 0xA780267dDcC0fAE069FB293dc977E1bEa074D2ba. Owner-style functions: setFactory, setFees, claimCreatorFees.
- 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 record7 pools over 57 days.
Measured at block 93,146,945. 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 & 0x3fff0x2888 · 10100010001000
- 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 / rTSLA
fee 0%- Swap ETH → rTSLAno liquidity at the current price
- Swap rTSLA → ETHno liquidity at the current price
- Add, then remove liquiditydeposit refused: error 0xf375c648
pool 0x078a04ac74da5d344541fb4c1df04e79a42c41f998e0edefaeaaa3e38e4ec566
Read from the bytecode
- Code size
- 14,551 bytes
- Owner
- 0xA780267dDcC0fAE069FB293dc977E1bEa074D2ba
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 20
- 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.
- 0x0501bd7b unknown
- 0x0f2ccad2 unknown
- 0x10c04d79 register
- 0x17773ebb creatorFeeBps
- 0x21d0ee70 beforeRemoveLiquidity
- 0x259982e5
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.
- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.
- Before swap returns delta. Can take part of what you put into a swap, or change how much is swapped.
beforeAddLiquidity
0x26b4bdd0 unknown0x3955df3a flushReserveFees0x39c051d9 spotPriceEthPerCoin0x43ee7606 unknown0x5284eaa2 quoteCurveBuy0x575e24b4 beforeSwap0x5a6d5a1a unknown0x5bb47808 setFactory0x65db6579 reserveFeeBps0x6c2bbe7e afterRemoveLiquidity0x6f41ec23 syncPoolPrice0x6fe7e6eb afterInitialize0x8c7171b5 getCurve0x8da5cb5b owner0x8e0ff96e totalCreatorEthOwed0x90866e1c targetSqrtPriceX960x91dd7346 unlockCallback0x93b78239 reserveFeesAccrued0x9ef833d4 setFees0x9f063efc afterAddLiquidity0x9f1f4f1f quoteCurveSell0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xc45a0155 unknown0xc4e833ce getHookPermissions0xcd3293de reserve0xceacf719 totalRealReserve0xd55be8c6 MAX_FEE_BPS0xd6ae6e44 claimCreatorFees0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xdea5c2e0 creatorOf0xe1b4af69 afterDonate0xe4b20eea reserveGate0xe5950b92 creatorEthOwed