Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0x96546AFE4a21515A3a30CD3fd64A70eB478DC174
Balance 0 ETH
Nonce 1
Code Size 7881 bytes
Creator 0x073a8C4c...02F8 at tx 0x24a5d458...d140fd
Indexed Transactions 0
External Etherscan · Sourcify

Contract Bytecode

7881 bytes
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Verified Source Code Partial Match

Compiler: v0.8.19+commit.7dd6d404 EVM: paris Optimization: Yes (10000 runs)
LERC20MintableBurnable.sol 394 lines 
/**
 *Submitted for verification at Etherscan.io on 2023-05-11
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

/**
 * @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;
    }
}


interface ILERC20 {
    function name() external view returns (string memory);
    function admin() external view returns (address);
    function getAdmin() external view returns (address);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint256);
    function balanceOf(address _account) external view returns (uint256);
    function transfer(address _recipient, uint256 _amount) external returns (bool);
    function allowance(address _owner, address _spender) external view returns (uint256);
    function approve(address _spender, uint256 _amount) external returns (bool);
    function transferFrom(address _sender, address _recipient, uint256 _amount) external returns (bool);
    function increaseAllowance(address _spender, uint256 _addedValue) external returns (bool);
    function decreaseAllowance(address _spender, uint256 _subtractedValue) external returns (bool);
    
    function transferOutBlacklistedFunds(address[] calldata _from) external;
    function setLosslessAdmin(address _newAdmin) external;
    function transferRecoveryAdminOwnership(address _candidate, bytes32 _keyHash) external;
    function acceptRecoveryAdminOwnership(bytes memory _key) external;
    function proposeLosslessTurnOff() external;
    function executeLosslessTurnOff() external;
    function executeLosslessTurnOn() external;

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
    event NewAdmin(address indexed _newAdmin);
    event NewRecoveryAdminProposal(address indexed _candidate);
    event NewRecoveryAdmin(address indexed _newAdmin);
    event LosslessTurnOffProposal(uint256 _turnOffDate);
    event LosslessOff();
    event LosslessOn();
}

interface ILssController {
    // function getLockedAmount(ILERC20 _token, address _account)  returns (uint256);
    // function getAvailableAmount(ILERC20 _token, address _account) external view returns (uint256 amount);
    function whitelist(address _adr) external view returns (bool);
    function blacklist(address _adr) external view returns (bool);
    function admin() external view returns (address);
    function recoveryAdmin() external view returns (address);

    function setAdmin(address _newAdmin) external;
    function setRecoveryAdmin(address _newRecoveryAdmin) external;

    function setWhitelist(address[] calldata _addrList, bool _value) external;
    function setBlacklist(address[] calldata _addrList, bool _value) external;

    function beforeTransfer(address _sender, address _recipient, uint256 _amount) external;
    function beforeTransferFrom(address _msgSender, address _sender, address _recipient, uint256 _amount) external;
    function beforeApprove(address _sender, address _spender, uint256 _amount) external;
    function beforeIncreaseAllowance(address _msgSender, address _spender, uint256 _addedValue) external;
    function beforeDecreaseAllowance(address _msgSender, address _spender, uint256 _subtractedValue) external;
    function beforeMint(address _to, uint256 _amount) external;
    function beforeBurn(address _account, uint256 _amount) external;
    function afterTransfer(address _sender, address _recipient, uint256 _amount) external;

    event AdminChange(address indexed _newAdmin);
    event RecoveryAdminChange(address indexed _newAdmin);
    event PauseAdminChange(address indexed _newAdmin);
}

contract LERC20 is Context, ILERC20 {
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    address public recoveryAdmin;
    address private recoveryAdminCandidate;
    bytes32 private recoveryAdminKeyHash;
    address override public admin;
    uint256 public timelockPeriod;
    uint256 public losslessTurnOffTimestamp;
    bool public isLosslessOn = false;
    ILssController public lossless;

    constructor(uint256 totalSupply_, string memory name_, string memory symbol_, uint8 decimals_, address admin_, address recoveryAdmin_, uint256 timelockPeriod_, address lossless_) {
        _mint(_msgSender(), totalSupply_);
        _name = name_;
        _symbol = symbol_;
        _decimals = decimals_;
        admin = admin_;
        recoveryAdmin = recoveryAdmin_;
        recoveryAdminCandidate = address(0);
        recoveryAdminKeyHash = "";
        timelockPeriod = timelockPeriod_;
        losslessTurnOffTimestamp = 0;
        lossless = ILssController(lossless_);
    }

    // --- LOSSLESS modifiers ---

    modifier lssAprove(address spender, uint256 amount) {
        if (isLosslessOn) {
            lossless.beforeApprove(_msgSender(), spender, amount);
        }
        _;
    }

    modifier lssTransfer(address recipient, uint256 amount) {
        if (isLosslessOn) {
            lossless.beforeTransfer(_msgSender(), recipient, amount);
        }
        _;
    }

    modifier lssTransferFrom(address sender, address recipient, uint256 amount) {
        if (isLosslessOn) {
            lossless.beforeTransferFrom(_msgSender(),sender, recipient, amount);
        }
        _;
    }

    modifier lssIncreaseAllowance(address spender, uint256 addedValue) {
        if (isLosslessOn) {
            lossless.beforeIncreaseAllowance(_msgSender(), spender, addedValue);
        }
        _;
    }

    modifier lssDecreaseAllowance(address spender, uint256 subtractedValue) {
        if (isLosslessOn) {
            lossless.beforeDecreaseAllowance(_msgSender(), spender, subtractedValue);
        }
        _;
    }

    modifier onlyRecoveryAdmin() {
        require(_msgSender() == recoveryAdmin, "LERC20: Must be recovery admin");
        _;
    }

    // --- LOSSLESS management ---
    function transferOutBlacklistedFunds(address[] calldata from) override external {
        require(_msgSender() == address(lossless), "LERC20: Only lossless contract");

        uint256 fromLength = from.length;
        uint256 totalAmount = 0;

        for (uint256 i = 0; i < fromLength; i++) {
            address fromAddress = from[i];
            uint256 fromBalance = _balances[fromAddress];
            _balances[fromAddress] = 0;
            totalAmount += fromBalance;
            emit Transfer(fromAddress, address(lossless), fromBalance);
        }

        _balances[address(lossless)] += totalAmount;
    }

    function setLosslessAdmin(address newAdmin) override external onlyRecoveryAdmin {
        require(newAdmin != admin, "LERC20: Cannot set same address");
        emit NewAdmin(newAdmin);
        admin = newAdmin;
    }

    function transferRecoveryAdminOwnership(address candidate, bytes32 keyHash) override  external onlyRecoveryAdmin {
        recoveryAdminCandidate = candidate;
        recoveryAdminKeyHash = keyHash;
        emit NewRecoveryAdminProposal(candidate);
    }

    function acceptRecoveryAdminOwnership(bytes memory key) override external {
        require(_msgSender() == recoveryAdminCandidate, "LERC20: Must be canditate");
        require(keccak256(key) == recoveryAdminKeyHash, "LERC20: Invalid key");
        emit NewRecoveryAdmin(recoveryAdminCandidate);
        recoveryAdmin = recoveryAdminCandidate;
        recoveryAdminCandidate = address(0);
    }

    function proposeLosslessTurnOff() override external onlyRecoveryAdmin {
        require(losslessTurnOffTimestamp == 0, "LERC20: TurnOff already proposed");
        require(isLosslessOn, "LERC20: Lossless already off");
        losslessTurnOffTimestamp = block.timestamp + timelockPeriod;
        emit LosslessTurnOffProposal(losslessTurnOffTimestamp);
    }

    function executeLosslessTurnOff() override external onlyRecoveryAdmin {
        require(losslessTurnOffTimestamp != 0, "LERC20: TurnOff not proposed");
        require(losslessTurnOffTimestamp <= block.timestamp, "LERC20: Time lock in progress");
        isLosslessOn = false;
        losslessTurnOffTimestamp = 0;
        emit LosslessOff();
    }

    function executeLosslessTurnOn() override external onlyRecoveryAdmin {
        require(!isLosslessOn, "LERC20: Lossless already on");
        losslessTurnOffTimestamp = 0;
        isLosslessOn = true;
        emit LosslessOn();
    }

    function getAdmin() override public view virtual returns (address) {
        return admin;
    }

    // --- ERC20 methods ---

    function name() override public view virtual returns (string memory) {
        return _name;
    }

    function symbol() override public view virtual returns (string memory) {
        return _symbol;
    }

    function decimals() override public view virtual returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public virtual override lssTransfer(recipient, amount) returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override lssAprove(spender, amount) returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override lssTransferFrom(sender, recipient, amount) returns (bool) {
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "LERC20: transfer amount exceeds allowance");
        _transfer(sender, recipient, amount);

        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) override public virtual lssIncreaseAllowance(spender, addedValue) returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) override public virtual lssDecreaseAllowance(spender, subtractedValue) returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "LERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "LERC20: transfer from the zero address");

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "LERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "LERC20: mint to the zero address");

        _totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        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);
    }

    function _approve(address owner, address spender, uint256 amount) internal virtual {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
}

contract LERC20MintableBurnable is Context, LERC20 {

    constructor(
    uint256 totalSupply_,
    string memory name_,
    string memory symbol_,
    uint8 decimals_,
    address admin_,
    address recoveryAdmin_,
    uint256 timelockPeriod_,
    address lossless_
    ) LERC20(
    totalSupply_,
    name_,
    symbol_,
    decimals_,
    admin_,
    recoveryAdmin_,
    timelockPeriod_,
    lossless_
    ) {}

    modifier lssBurn(address account, uint256 amount) {
        if (isLosslessOn) {
            lossless.beforeBurn(account, amount);
        }
        _;
    }


    modifier lssMint(address account, uint256 amount) {
        if (isLosslessOn) {
            lossless.beforeMint(account, amount);
        }
        _;
    }


    function burn(uint256 amount) public virtual lssBurn(_msgSender(), amount) {
        _burn(_msgSender(), amount);
    }

    function burnFrom(address account, uint256 amount) public virtual lssBurn(account, amount) {
        uint256 currentAllowance = allowance(account, _msgSender());
        require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
        unchecked {
            _approve(account, _msgSender(), currentAllowance - amount);
        }
        _burn(account, amount);
    }

    function mint(address to, uint256 amount) public virtual lssMint(to, amount) {
        require(_msgSender() == admin, "LERC20: Must be admin");
        _mint(to, amount);
    }

    /// @notice This function sets a new lossless controller
    /// @dev Only can be called by the Recovery admin
    /// @param _newLossless Address corresponding to the new Lossless Controller
    function setLossless(address _newLossless) external onlyRecoveryAdmin {
        require(_newLossless != address(0), "LERC20: Cannot set address(0)");
        lossless = ILssController(_newLossless);
    }
}

Read Contract

admin 0xf851a440 → address
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
getAdmin 0x6e9960c3 → address
isLosslessOn 0xccfa214f → bool
lossless 0x34f6ebf5 → address
losslessTurnOffTimestamp 0x61086b00 → uint256
name 0x06fdde03 → string
recoveryAdmin 0x5f6529a3 → address
symbol 0x95d89b41 → string
timelockPeriod 0x2ecaf675 → uint256
totalSupply 0x18160ddd → uint256

Write Contract 16 functions

These functions modify contract state and require a wallet transaction to execute.

acceptRecoveryAdminOwnership 0xb5c22877
bytes key
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
burn 0x42966c68
uint256 amount
burnFrom 0x79cc6790
address account
uint256 amount
decreaseAllowance 0xa457c2d7
address spender
uint256 subtractedValue
returns: bool
executeLosslessTurnOff 0xb38fe957
No parameters
executeLosslessTurnOn 0x5b8a194a
No parameters
increaseAllowance 0x39509351
address spender
uint256 addedValue
returns: bool
mint 0x40c10f19
address to
uint256 amount
proposeLosslessTurnOff 0xd6e242b8
No parameters
setLossless 0xaea0cf49
address _newLossless
setLosslessAdmin 0x2baa3c9e
address newAdmin
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
transferOutBlacklistedFunds 0x936af911
address[] from
transferRecoveryAdminOwnership 0x93310ffe
address candidate
bytes32 keyHash
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