TaxHook

A trading tax hook. It takes a tax on trades, manages liquidity for its providers and burns tokens.

• Takes a tax on trades

  On top of the normal pool fee, it keeps part of each trade as a tax. Buys and sells can be taxed differently.

  The code that does this (unlockCallback):

  function unlockCallback(bytes calldata data) external onlyPoolManager returns (bytes memory) {
      uint256 amount = abi.decode(data, (uint256));
      poolManager.burn(address(this), uint256(uint160(quote)), amount);
      poolManager.take(quote, taxRecipient, amount);
      return "";
  }

• Manages liquidity for its providers

  It adds and removes liquidity itself, so it can own part or all of the pool.

• Burns tokens

  It destroys some tokens (or sends them to an address nobody controls), so there are fewer of them.

  The code that does this (unlockCallback):

  function unlockCallback(bytes calldata data) external onlyPoolManager returns (bytes memory) {
      uint256 amount = abi.decode(data, (uint256));
      poolManager.burn(address(this), uint256(uint160(quote)), amount);
      poolManager.take(quote, taxRecipient, amount);
      return "";
  }

• Rewards to claim

  It keeps track of rewards to be claimed later.

  The code that does this (claimTaxes):

  function claimTaxes() external returns (uint256 amount) {
      amount = totalTaxes - paidOut;
      if (amount == 0) revert NothingToClaim();
      paidOut += amount;
      poolManager.unlock(abi.encode(amount));
      emit TaxesClaimed(taxRecipient, amount);
  }

• Anyone can trigger payouts

  Anyone can claim what they’re owed, so nobody has to wait on the hook developer.

  The code that does this (claimTaxes):

  function claimTaxes() external returns (uint256 amount) {
      amount = totalTaxes - paidOut;
      if (amount == 0) revert NothingToClaim();
      paidOut += amount;
      poolManager.unlock(abi.encode(amount));
      emit TaxesClaimed(taxRecipient, amount);
  }

Who controls it: Not upgradeable. The owner can change: taxes, tax recipient.

Based on the hook’s published code.

• Took tax 31 times
  Latest transactions

  • 0xfe65bc3b…aa280f block 132,536,943
  • 0x9e2bc50e…0cf779 block 132,536,708
  • 0x1105deb4…d780a0 block 132,536,672
  • 0xe96f77dc…442543 block 132,536,602
  • 0xaa03fbc5…ba40cf block 132,536,560
  • 0xa5bd525f…bfd121 block 132,536,480
  • 0xbde79307…cd414d block 132,536,455
  • 0xbde79307…cd414d block 132,536,455
  • 0x304d04c3…b3a8bb block 132,536,453
  • 0x1ad5e08e…a707cf block 132,536,425

  See every one on the explorer ↗

Counted from what the hook recorded on-chain across all its pools, for every action in its published code, plus token transfers in and out of it.