Transaction Hash:
Block:
21829499 at Feb-12-2025 09:24:11 AM +UTC
Transaction Fee:
0.000205997312457306 ETH
$0.38
Gas Used:
29,934 Gas / 6.881716859 Gwei
Emitted Events:
8 |
AlkimiExchangeToken.Transfer( from=[Sender] 0x20c5b10046808c331e7aabf202b0c20ca526cc0b, to=0x9642b23Ed1E01Df1092B92641051881a322F5D4E, value=7164235403254327000000 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x20C5B100...Ca526CC0b |
0.009179780081610318 Eth
Nonce: 13790
|
0.008973782769153012 Eth
Nonce: 13791
| 0.000205997312457306 | ||
0x3106a0a0...8589E001f | |||||
0x95222290...5CC4BAfe5
Miner
| (beaverbuild) | 19.936602777561166126 Eth | 19.936786403546598844 Eth | 0.000183625985432718 |
Execution Trace
AlkimiExchangeToken.transfer( recipient=0x9642b23Ed1E01Df1092B92641051881a322F5D4E, amount=7164235403254327000000 ) => ( True )
transfer[ERC20 (ln:530)]
_transfer[ERC20 (ln:531)]
_beforeTokenTransfer[ERC20 (ln:646)]
Transfer[ERC20 (ln:655)]
_afterTokenTransfer[ERC20 (ln:657)]
_msgSender[ERC20 (ln:531)]
// Sources flattened with hardhat v2.6.0 https://hardhat.org // File contracts/external/UniswapV2Library.sol // SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.0; // Exempt from the original UniswapV2Library. library UniswapV2Library { // returns sorted token addresses, used to handle return values from pairs sorted in this order function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) { require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES'); (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS'); } // calculates the CREATE2 address for a pair without making any external calls function pairFor(bytes32 initCodeHash, address factory, address tokenA, address tokenB) internal pure returns (address pair) { (address token0, address token1) = sortTokens(tokenA, tokenB); pair = address(uint160(uint(keccak256(abi.encodePacked( hex'ff', factory, keccak256(abi.encodePacked(token0, token1)), initCodeHash // init code hash ))))); } } // File contracts/external/UniswapV3Library.sol /// @notice based on https://github.com/Uniswap/uniswap-v3-periphery/blob/v1.0.0/contracts/libraries/PoolAddress.sol /// @notice changed compiler version and lib name. /// @title Provides functions for deriving a pool address from the factory, tokens, and the fee library UniswapV3Library { bytes32 internal constant POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54; /// @notice The identifying key of the pool struct PoolKey { address token0; address token1; uint24 fee; } /// @notice Returns PoolKey: the ordered tokens with the matched fee levels /// @param tokenA The first token of a pool, unsorted /// @param tokenB The second token of a pool, unsorted /// @param fee The fee level of the pool /// @return Poolkey The pool details with ordered token0 and token1 assignments function getPoolKey( address tokenA, address tokenB, uint24 fee ) internal pure returns (PoolKey memory) { if (tokenA > tokenB) (tokenA, tokenB) = (tokenB, tokenA); return PoolKey({token0: tokenA, token1: tokenB, fee: fee}); } /// @notice Deterministically computes the pool address given the factory and PoolKey /// @param factory The Uniswap V3 factory contract address /// @param key The PoolKey /// @return pool The contract address of the V3 pool function computeAddress(address factory, PoolKey memory key) internal pure returns (address pool) { require(key.token0 < key.token1); pool = address( uint160(uint256( keccak256( abi.encodePacked( hex'ff', factory, keccak256(abi.encode(key.token0, key.token1, key.fee)), POOL_INIT_CODE_HASH ) ) )) ); } } // File contracts/IPLPS.sol interface IPLPS { function LiquidityProtection_beforeTokenTransfer( address _pool, address _from, address _to, uint _amount) external; function isBlocked(address _pool, address _who) external view returns(bool); function unblock(address _pool, address _who) external; } // File contracts/UsingLiquidityProtectionService.sol abstract contract UsingLiquidityProtectionService { bool private protected = true; uint64 internal constant HUNDRED_PERCENT = 1e18; bytes32 internal constant UNISWAP = 0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f; bytes32 internal constant PANCAKESWAP = 0x00fb7f630766e6a796048ea87d01acd3068e8ff67d078148a3fa3f4a84f69bd5; bytes32 internal constant QUICKSWAP = 0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f; enum UniswapVersion { V2, V3 } enum UniswapV3Fees { _005, // 0.05% _03, // 0.3% _1 // 1% } modifier onlyProtectionAdmin() { protectionAdminCheck(); _; } function token_transfer(address from, address to, uint amount) internal virtual; function token_balanceOf(address holder) internal view virtual returns(uint); function protectionAdminCheck() internal view virtual; function liquidityProtectionService() internal pure virtual returns(address); function uniswapVariety() internal pure virtual returns(bytes32); function uniswapVersion() internal pure virtual returns(UniswapVersion); function uniswapFactory() internal pure virtual returns(address); function counterToken() internal pure virtual returns(address) { return 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; // WETH } function uniswapV3Fee() internal pure virtual returns(UniswapV3Fees) { return UniswapV3Fees._03; } function protectionChecker() internal view virtual returns(bool) { return ProtectionSwitch_manual(); } function lps() private pure returns(IPLPS) { return IPLPS(liquidityProtectionService()); } function LiquidityProtection_beforeTokenTransfer(address _from, address _to, uint _amount) internal virtual { if (protectionChecker()) { if (!protected) { return; } lps().LiquidityProtection_beforeTokenTransfer(getLiquidityPool(), _from, _to, _amount); } } function revokeBlocked(address[] calldata _holders, address _revokeTo) external onlyProtectionAdmin() { require(protectionChecker(), 'UsingLiquidityProtectionService: protection removed'); protected = false; address pool = getLiquidityPool(); for (uint i = 0; i < _holders.length; i++) { address holder = _holders[i]; if (lps().isBlocked(pool, holder)) { token_transfer(holder, _revokeTo, token_balanceOf(holder)); } } protected = true; } function LiquidityProtection_unblock(address[] calldata _holders) external onlyProtectionAdmin() { require(protectionChecker(), 'UsingLiquidityProtectionService: protection removed'); address pool = getLiquidityPool(); for (uint i = 0; i < _holders.length; i++) { lps().unblock(pool, _holders[i]); } } function disableProtection() external onlyProtectionAdmin() { protected = false; } function isProtected() public view returns(bool) { return protected; } function ProtectionSwitch_manual() internal view returns(bool) { return protected; } function ProtectionSwitch_timestamp(uint _timestamp) internal view returns(bool) { return not(passed(_timestamp)); } function ProtectionSwitch_block(uint _block) internal view returns(bool) { return not(blockPassed(_block)); } function blockPassed(uint _block) internal view returns(bool) { return _block < block.number; } function passed(uint _timestamp) internal view returns(bool) { return _timestamp < block.timestamp; } function not(bool _condition) internal pure returns(bool) { return !_condition; } function feeToUint24(UniswapV3Fees _fee) internal pure returns(uint24) { if (_fee == UniswapV3Fees._03) return 3000; if (_fee == UniswapV3Fees._005) return 500; return 10000; } function getLiquidityPool() public view returns(address) { if (uniswapVersion() == UniswapVersion.V2) { return UniswapV2Library.pairFor(uniswapVariety(), uniswapFactory(), address(this), counterToken()); } require(uniswapVariety() == UNISWAP, 'LiquidityProtection: uniswapVariety() can only be UNISWAP for V3.'); return UniswapV3Library.computeAddress(uniswapFactory(), UniswapV3Library.getPoolKey(address(this), counterToken(), feeToUint24(uniswapV3Fee()))); } } // File @openzeppelin/contracts/utils/[email protected] /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File @openzeppelin/contracts/access/[email protected] /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File @openzeppelin/contracts/token/ERC20/[email protected] /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File @openzeppelin/contracts/token/ERC20/extensions/[email protected] /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File @openzeppelin/contracts/token/ERC20/[email protected] /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // File contracts/AlkimiERC20.sol contract AlkimiExchangeToken is ERC20, Ownable, UsingLiquidityProtectionService { function token_transfer(address _from, address _to, uint _amount) internal override { _transfer(_from, _to, _amount); // Expose low-level token transfer function. } function token_balanceOf(address _holder) internal view override returns(uint) { return balanceOf(_holder); // Expose balance check function. } function protectionAdminCheck() internal view override onlyOwner {} // Must revert to deny access. function liquidityProtectionService() internal pure override returns(address) { return 0xB59Dfc14D2037e3c4BF9C4FC1219f941E36De3e2; } function uniswapVariety() internal pure override returns(bytes32) { return UNISWAP; // UNISWAP / PANCAKESWAP / QUICKSWAP. } function uniswapVersion() internal pure override returns(UniswapVersion) { return UniswapVersion.V2; // V2 or V3. } function uniswapFactory() internal pure override returns(address) { return 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f; // Replace with the correct address. } function _beforeTokenTransfer(address _from, address _to, uint _amount) internal override { super._beforeTokenTransfer(_from, _to, _amount); LiquidityProtection_beforeTokenTransfer(_from, _to, _amount); } // All the following overrides are optional, if you want to modify default behavior. // How the protection gets disabled. function protectionChecker() internal view override returns(bool) { return ProtectionSwitch_timestamp(1632873599); // Switch off protection on Friday, April 22, 2022 4:16:31 PM. // return ProtectionSwitch_block(13000000); // Switch off protection on block 13000000. // return ProtectionSwitch_manual(); // Switch off protection by calling disableProtection(); from owner. Default. } // This token will be pooled in pair with: function counterToken() internal pure override returns(address) { return 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; // WETH } constructor() ERC20('Alkimi Exchange', '$ADS') { _mint(owner(), 250000000 * 1e18); } }