Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,363,504
0x82Ab…A888
The eight checks
3 pools use this hook, the first one 96 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 0x26E8134eCC3af5cCE32f34B03E7BD2f318B25158. Owner-style functions: setNetworkPool, withdrawCreatorFees, transferOwnership, transferFrom, mint, burn.
- 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 95 days.
Measured at block 93,363,504. 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 / ALLEGEDLY
fee 0%- Swap ETH → ALLEGEDLYno liquidity at the current price
- Swap ALLEGEDLY → ETHno liquidity at the current price
- Add, then remove liquiditydeposit refused: LiquidityDisabled
pool 0xe52d2a75cb73b739b2160e49ccfc64bddf6af2dc9c6c69113b07cb370e03fe11
Read from the bytecode
- Code size
- 19,902 bytes
- Owner
- 0x26E8134eCC3af5cCE32f34B03E7BD2f318B25158
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 13
- 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.
- 0x09c21f43 SELL_VAULT_KEEP_BPS
- 0x107cbc2b MIN_SEED
- 0x1d7df7d4 feePayeeA
- 0x21d0ee70 beforeRemoveLiquidity
- 0x259982e5 beforeAddLiquidity
- 0x575e24b4
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.
beforeSwap
0x6473964c networkSet0x66903e80 curves0x6bc934e6 GENESIS_TOKENS_PER_ETH0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x8950555d BUY_PLATFORM_BPS0x8da5cb5b owner0x9016af09 creatorFees0x91dd7346 unlockCallback0x98110acd launch0x988b1fa7 poolOf0x99159040 BETA_MAX0x9a5688e5 BUY_VAULT_BPS0x9e25d160 pendingBurnFees0x9f063efc afterAddLiquidity0xa37b70d0 feePayeeB0xa3db01c4 SELL_CREATOR_BPS0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xb901c784 DEFAULT_BETA0xbf765f96 BETA_MIN0xd54d2945 setNetworkPool0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xe1b4af69 afterDonate0xe1cd04b4 withdrawCreatorFees0xedd6ea76 quoteBuy0xf2c963fd quoteSell0xf2fde38b transferOwnership0xf629058c curveState0x06fdde03 name0x095ea7b3 approve0x18160ddd totalSupply0x23b872dd transferFrom0x313ce567 decimals0x3644e515 DOMAIN_SEPARATOR0x40c10f19 mint0x70a08231 balanceOf0x7ecebe00 nonces0x7f5a7c7b hook0x95d89b41 symbol0x9dc29fac burn0xa9059cbb transfer0xd505accf permit0xdd62ed3e allowance0xeac989f8 uri