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ERC-20
Overview
Max Total Supply
53,000,000 CDM
Holders
50
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
CryptoDollarMenu
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; /// @title Crypto Dollar Menu: Great Deals For Tough Times /// @author cryptodollarmenu.com /// @notice Claim, contribute and burn $CDM with a maximum of 5_500_000_000. contract CryptoDollarMenu is ERC20, ERC20Burnable, Ownable { using SafeMath for uint256; /// @notice The minted amount of $CDM tokens that are burned. /// @dev This $CDM is burned using the ERC20 contract method. uint256 public burnedAmount; /// @notice A count of the number of $CDM claims made. /// @dev claimCount will always be below MAX_CLAIMS. uint256 public claimCount; /// @notice The minted amount of $CDM tokens allocated for staking rewards. /// @dev This $CDM is sent directly to the rewards conract. uint256 public createdStakingRewards; /// @notice The amount of $CDM tokens created. /// @dev Includes claimed, contributed and burned $CDM. uint256 public currentCreated; /// @notice The claimed amount of $CDM tokens. /// @dev Includes only minted and claimed $CDM while excluding burned and contibuted. uint256 public currentClaimed; /// @notice The IERC721 conctract to which $CDM rewards contributions are sent. /// @dev Deployed prior to the deployment of this contract so that it can be set permanently. address public rewardsContract = 0xAFfa8fA8a7D54e4a55fCF8CdaDC2b1113a724a20; /// @notice The maximum number of $CDM claims available + 1. uint256 public constant MAX_CLAIMS = 10_001; /// @notice The maximum amount of $CDM that can be created. /// @dev This differs from the current totalSupply as it includes all burned tokens. uint256 public constant MAX_CREATED = 5500000000000000000000000000; // 5_500_000_000 in Ether /// @notice The claim rewards base value to be used starting at 5_000 claims. function getClaimRewardBaseHigh(uint256 current) public pure returns (uint256) { // Define the values that should be assigned to `claimRewardBase` // Based on which range `current` falls into uint256 CLAIM_REWARD_BASE_1 = 500000000000000000000000; uint256 CLAIM_REWARD_BASE_2 = 400000000000000000000000; uint256 CLAIM_REWARD_BASE_3 = 300000000000000000000000; uint256 CLAIM_REWARD_BASE_4 = 200000000000000000000000; uint256 CLAIM_REWARD_BASE_5 = 100000000000000000000000; uint256 claimRewardBase; if (current > 4_999 && current < 6_000) { claimRewardBase = CLAIM_REWARD_BASE_1; } else if (current > 5_999 && current < 7_000) { claimRewardBase = CLAIM_REWARD_BASE_2; } else if (current > 6_999 && current < 8_000) { claimRewardBase = CLAIM_REWARD_BASE_3; } else if (current > 7_999 && current < 9_000) { claimRewardBase = CLAIM_REWARD_BASE_4; } else if (current > 8_999 && current < 10_001) { claimRewardBase = CLAIM_REWARD_BASE_5; } return claimRewardBase; } /// @notice The claim rewards base value to be used below 5_000 claims. function getClaimRewardBaseLow(uint256 current) public pure returns (uint256) { // Define the values that should be assigned to `claimRewardBase` // Based on which range `current` falls into uint256 CLAIM_REWARD_BASE_1 = 1000000000000000000000000; uint256 CLAIM_REWARD_BASE_2 = 900000000000000000000000; uint256 CLAIM_REWARD_BASE_3 = 800000000000000000000000; uint256 CLAIM_REWARD_BASE_4 = 700000000000000000000000; uint256 CLAIM_REWARD_BASE_5 = 600000000000000000000000; uint256 claimRewardBase; if (current < 1_000) { claimRewardBase = CLAIM_REWARD_BASE_1; } else if (current > 999 && current < 2_000) { claimRewardBase = CLAIM_REWARD_BASE_2; } else if (current > 1_999 && current < 3_000) { claimRewardBase = CLAIM_REWARD_BASE_3; } else if (current > 2_999 && current < 4_000) { claimRewardBase = CLAIM_REWARD_BASE_4; } else if (current > 3_999 && current < 5_000) { claimRewardBase = CLAIM_REWARD_BASE_5; } return claimRewardBase; } /// @notice A struct indicating that an address has made a claim and their count when they made it. struct ClaimDetail { address user; uint256 count; } /// @notice An address is used a key to each struct of information for a given user claim. /// @dev Adding an address to user claims restricts multiple claims per wallet. mapping(address => ClaimDetail) public userClaims; /// @notice Emitted when a claim is made. event UserClaim(address indexed user, uint256 count, uint256 claimAmount); /// @notice Create the $CDM ERC20 contract. constructor() ERC20("Crypto Dollar Menu", "CDM") {} /// @notice A random claim of $CDM that sends the remaining base claim amount to staking rewards. /// @param picked A random uint256 input by a user to give an added degree of randomness. function claimContribute(uint256 picked) external { uint256 _claimCount = claimCount; uint256 _createdStakingRewards = createdStakingRewards; uint256 _currentCreated = currentCreated; uint256 _currentClaimed = currentClaimed; uint256 _claimRewardBase; _claimRewardBase = (_claimCount < 5_000) ? getClaimRewardBaseLow(_claimCount) : getClaimRewardBaseHigh(_claimCount); uint256 generatedValue = getGenerated(picked, _claimCount); uint256 amountRequired = _currentCreated + _claimRewardBase; uint256 claimAmount = randomClaim(picked, _claimCount, generatedValue, _claimRewardBase); uint256 unclaimedAmount = _claimRewardBase - claimAmount; require(amountRequired < MAX_CREATED); require(_claimCount < MAX_CLAIMS, "Max claims reached"); require(userClaims[_msgSender()].count == 0, "Wallet already claimed"); _mint(_msgSender(), claimAmount); _mint(rewardsContract, unclaimedAmount); _claimCount++; claimCount = _claimCount; _currentCreated += _claimRewardBase; currentCreated = _currentCreated; _currentClaimed += claimAmount; currentClaimed = _currentClaimed; _createdStakingRewards += unclaimedAmount; createdStakingRewards = _createdStakingRewards; // Create and store new ClaimDetail ClaimDetail memory claimDetail = ClaimDetail({ user: _msgSender(), count: _claimCount }); userClaims[_msgSender()] = claimDetail; emit UserClaim(_msgSender(), _claimCount, claimAmount); } /// @notice A random claim of $CDM that burns the remaining base claim amount. /// @param picked A random uint256 input by a user to give an added degree of randomness. /// @dev This is only available at 5_000 claims and above. function claimBurn(uint256 picked) external { uint256 _burnedAmount = burnedAmount; uint256 _claimCount = claimCount; uint256 _currentCreated = currentCreated; uint256 _currentClaimed = currentClaimed; uint256 _claimRewardBase = getClaimRewardBaseHigh(_claimCount); uint256 amountRequired = _currentCreated + _claimRewardBase; uint256 generatedValue = getGenerated(picked, _claimCount); uint256 claimAmount = randomClaim(picked, _claimCount, generatedValue, _claimRewardBase); uint256 unclaimedAmount = _claimRewardBase - claimAmount; require(_claimCount > 4_999, "Burn not yet available"); require(_claimCount < MAX_CLAIMS, "Max claims reached"); require(amountRequired < MAX_CREATED); require(userClaims[_msgSender()].count == 0, "Wallet already claimed"); _mint(_msgSender(), claimAmount); _mint(_msgSender(), unclaimedAmount); _burn(_msgSender(), unclaimedAmount); _claimCount++; claimCount = _claimCount; _currentCreated += _claimRewardBase; currentCreated = _currentCreated; _currentClaimed += claimAmount; currentClaimed = _currentClaimed; _burnedAmount += unclaimedAmount; burnedAmount = _burnedAmount; // Create and store new ClaimDetail ClaimDetail memory claimDetail = ClaimDetail({ user: _msgSender(), count: _claimCount }); userClaims[_msgSender()] = claimDetail; emit UserClaim(_msgSender(), _claimCount, claimAmount); } /// @notice Determine if claim and burn is available using a boolean. /// @return A boolean indicating whether claim and burn is available. function getBurnAvailable() external view returns (bool) { uint256 _claimCount = claimCount; bool status = (_claimCount < 5000) ? false : true; return status; } /// @notice Provides a statement used to display if claim and burn is available. /// @return A statement indicating the availability of claim and burn. function getBurnStatement() external view returns (string memory) { string memory available = "Burn available."; string memory notAvailable = "Burn not available."; uint256 _claimCount = claimCount; string memory status = (_claimCount < 5000) ? notAvailable : available; return status; } /// @notice An explicit function to determine the amount of $CDM contributed for rewards. /// @return The amount of $CDM currently contributed as rewards expressed in Wei. function getCreatedStakingRewards() external view returns (uint256) { return createdStakingRewards; } /// @notice An explicit function to determine the amount of $CDM created. /// @dev Includes claimed, contributed and burned tokens. /// @return The amount of currently created $CDM tokens expressed in Wei. function getCurrentCreated() external view returns (uint256) { return currentCreated; } /// @notice An explicit function to determine the amount of $CDM claimed. /// @dev Excludes contributed and burned $CDM. /// @return The amount of currently claimed $CDM tokens expressed in Wei. function getCurrentClaimed() external view returns (uint256) { return currentClaimed; } /// @notice An explicit function to determine the current max claim. /// @return The maximum amount of $CDM that can currently be claimed. function getCurrentMaxClaim() external view returns (uint256) { uint256 _claimCount = claimCount; uint256 _claimRewardBase; _claimRewardBase = (_claimCount < 5_000) ? getClaimRewardBaseLow(_claimCount) : getClaimRewardBaseHigh(_claimCount); return _claimRewardBase; } /// @notice Get struct providing the information for a speciic user claim. /// @return The claim detail for a specific address. function getUserClaim(address user) external view returns (ClaimDetail memory) { return userClaims[user]; } /// @notice An explicit function to return the maximum about of $CDM that can be created. /// @return The maximum amount of $CDM that can be created expressed in Wei. function getMaximumCreated() external pure returns (uint256) { return MAX_CREATED; } /// @notice An explicit function to provide the current total supply of $CDM. /// @dev This does not include burned $CDM. /// @return Retuns the current total supply of $CDM. function getTotalSupply() public view returns (uint256) { return totalSupply(); } /// @notice A function to generate a random uint256 value using two uint256 inputs. function getGenerated(uint256 a, uint256 b) private view returns (uint256) { uint256 generated = random(string(abi.encodePacked("9b96e70d-c72a-47de-b5ed-6e325b14a60c", block.timestamp, _msgSender(), toString(a), toString(b)))); return generated; } /// @notice Create a random claim amount between 0 and the claim reward base amount. /// @param a A variable input to create randomness. /// @param b A variable input to create randomness. /// @param c A variable input to create randomness. /// @param reward The claim reward base value. /// @return A random claim value. function randomClaim(uint256 a, uint256 b, uint256 c, uint256 reward) private view returns (uint256) { uint256 v = uint(keccak256(abi.encodePacked("459ead19-8da5-40a6-b958-4ae8f04786c7", block.timestamp, toString(a), toString(b), toString(c)))) % reward; return v; } /// @notice A general random function to be used to shuffle and generate values. /// @param input Any string value to be randomized. /// @return The output of a random hash using keccak256. function random(string memory input) private pure returns (uint256) { return uint256(keccak256(abi.encodePacked(input))); } /// @notice Returns an uint256 value as a string. /// @param value The uint256 value to have a type change. /// @return A string of the inputted uint256 value. function toString(uint256 value) private pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @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() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { 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 { _transferOwnership(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"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol) pragma solidity ^0.8.0; import "../ERC20.sol"; import "../../../utils/Context.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20 { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function burnFrom(address account, uint256 amount) public virtual { _spendAllowance(account, _msgSender(), amount); _burn(account, amount); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead 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: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, 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}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, 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}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, 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) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, 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) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * 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: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _balances[to] += amount; } emit Transfer(from, to, amount); _afterTokenTransfer(from, to, 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; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _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; // Overflow not possible: amount <= accountBalance <= totalSupply. _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 Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - 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 {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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); /** * @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 `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount ) external returns (bool); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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ility":"view","type":"function"},{"inputs":[],"name":"getCurrentCreated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCurrentMaxClaim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaximumCreated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"getTotalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserClaim","outputs":[{"components":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"count","type":"uint256"}],"internalType":"struct CryptoDollarMenu.ClaimDetail","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardsContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userClaims","outputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"count","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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