Launchpad hook on BNB Chain

Uniswap v4 Hook Contract 0x7cbc9f0c0d272f256e032b6d5574d32afb1400cc on BNB Chain · Launchpad

Volume (24h)
$814
Value locked (TVL)
$0
All-time volume
$1.43K
Pools using this hook
26
Swaps (24h)
12 (1 traders)
Total swaps
156

What it does

A launchpad hook that charges every buy and sell of launched tokens a platform fee of up to 1% (shared between creator, treasury and referrers) plus any launch-set dividend tax, restricts early buys during snipe and fair-launch windows, and leaves LP withdrawals unrestricted.

This read was written for the hook 0x30a2…40cc on Robinhood Chain and reused here: the two share a code shape, so constants such as fees, owners and addresses can differ.

How it works step by step

  • Charges a platform fee of up to 1% on every buy and sell of tokens launched through its factory, always taken in the quote token (such as ETH).
  • Splits that fee between the token creator (at least 50%, 70% by default) and the platform treasury, with referral rewards carved from the platform's share.
  • Can add an optional extra buy and/or sell 'dividend tax' chosen at launch, which is sent to a dividend pool for token holders.
  • Can route part of the creator's fees into automatic buyback-and-burn of the launched token.
  • Blocks buys during an initial anti-snipe window and caps buy size during a short fair-launch period of up to 1 hour.
Swap behaviour
Each swap pays the token's hook fee (0% to 1%) plus any dividend tax set at launch, taken from the quote-token side of the trade. Buys revert before the snipe window ends, and buys above the max-buy amount revert during the fair-launch window; the hook may also run a fee-free buyback-and-burn after a swap.
Liquidity behaviour
No liquidity callbacks; LPs can add and withdraw freely.
Fee behaviour
The hook fee is 1% by default with a hard cap of 1%, split at least 50% to the creator (or their chosen recipients/buyback) and the rest to the treasury and referrers, claimable later. Separate dividend buy/sell taxes are fixed per token at launch by the factory and have no cap enforced in this hook, so they can differ between buys and sells.
Owner & admin controls
The owner can set the hook fee for new and existing tokens up to 1%, set the creator share between 50% and 100%, change the treasury, set the fair-launch window up to 1 hour, and set the max-buy amount and buyback threshold without limits. The owner cannot change a token's dividend taxes after launch.

Enabled Uniswap v4 callbacks

beforeSwap, afterSwap, beforeSwapReturnDelta, afterSwapReturnDelta

beforeSwap enforces snipe/max-buy rules and takes the fee when the quote amount is specified; afterSwap takes the fee from the quote side otherwise and triggers buybacks and dividend flushes; beforeSwapReturnDelta and afterSwapReturnDelta let the hook charge those fees on the swap amounts.

Security & trust assessment

Risk level: medium, estimated (decoded bytecode, high confidence).

Who controls it: The owner (initially the treasury) can tune the platform fee within 1%, the creator share within 50%-100%, the treasury address and launch buy limits; token creators can set fee recipients. Neither can touch LP principal.

Risk to user funds: The hook takes 0% to 1% platform fee per swap plus any launch-set dividend tax whose cap is enforced only by the factory, holding accrued fees until claimed. LP principal cannot be locked or drained.

Security findings

  • [info] Platform fee capped at 1%: Owner-adjustable hook fee is hard-capped at 1% per swap, and the creator always receives at least half of it.
  • [medium] Dividend taxes not capped in the hook: Extra buy and sell taxes are set per token by the factory at launch as values up to 65535 bps with no cap in this contract, so a token could have a high or asymmetric sell tax depending on the factory's own limits; they cannot be changed after launch.
  • [low] Launch-time buy restrictions: Buys are blocked until the snipe window ends and capped by an owner-set max-buy amount during a fair-launch window of at most 1 hour; sells are not restricted.
  • [info] LP withdrawals unrestricted: Remove-liquidity callbacks are disabled, so the hook cannot block or tax withdrawals.

Contract details

Verified source
No
Bytecode size
18,193 bytes
Upgradeable proxy
No
Detected patterns
moves-currency, ownable, return-delta

Pools using Launchpad hook