Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 92,974,475
0x3854…28cc
The eight checks
20 pools use this hook, the first one 68 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.
- 03n/a
LPs can get outClosed to outside LPs: only the hook's own liquidity is in the pool.
- 04caution
The fee is the feeIts pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
- 05caution
No one holds the switchNo owner() but it has setDividendDistributor, setFactory, claimReferralFees, claimCreatorFees, sweepTreasuryFees.
- 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 record20 pools over 67 days.
Measured at block 92,974,475. 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 & 0x3fff0x28cc · 10100011001100
- 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.
WETH / SHARE
fee dynamic, now 0%- Swap WETH → SHAREno liquidity at the current price
- Swap SHARE → WETHno liquidity at the current price
- Add, then remove liquiditydeposit refused: AddLiquidityBlocked
pool 0x44218b1c8be0995ae6029621bab9b6666c862c084d6c4be230b48e86cecd5d72
Read from the bytecode
- Code size
- 22,177 bytes
- Owner
- none found
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 43
- 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.
- 0x06094dce treasuryFeesOwed
- 0x15f64920 phaseOf
- 0x1bbf7058 feeConfigOf
- 0x21d0ee70 beforeRemoveLiquidity
- 0x259982e5 beforeAddLiquidity
- 0x28ff8a8c wethClaims
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.
- 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.
0x32516d48
setDividendDistributor
0x354980d6 creatorFees0x3fc8cef3 weth0x481c6a75 manager0x51b0ce2d bonded0x575e24b4 beforeSwap0x5bb47808 setFactory0x5cf948e2 pokeFees0x61d027b3 treasury0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x7195270a quoteOf0x72aac03e graduatedAt0x79692564 claimReferralFees0x7b103999 registry0x7e9cc2f7 referralFeesOwed0x8564e814 fundDividendEpoch0x91dd7346 unlockCallback0x9eb4406c launchLib0x9f063efc afterAddLiquidity0xa6e27f13 poolPriceWad0xaf8d60b5 claimCreatorFees0xb47b2fb1 afterSwap0xb6a57893 registerLaunch0xb6a8b0fa beforeDonate0xb6c1538f gradLiquidity0xbad3ea6a dividendDistributor0xc45a0155 unknown0xc7a68d88 previewCreatorFees0xc8678d52 sweepTreasuryFees0xda4bde0f poolReserves0xdb474c96 quoteClaims0xdc98354e beforeInitialize0xe1b4af69 afterDonate0xf63662d3 flushMechanisms0xf70a1001 dividendEpoch0xfb937c3b launchedAt0xfe984444 gradThreshold