Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0x1cF4592ebfFd730c7dc92c1bdFFDfc3B9EfCf29a
Balance 0 ETH
Nonce 1
Code Size 6649 bytes
Creator 0x90f85042...cd7D at tx 0xf1f9d9e4...c80eaf
Indexed Transactions 0
External Etherscan · Sourcify

Contract Bytecode

6649 bytes
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Verified Source Code Partial Match

Compiler: v0.6.8+commit.0bbfe453 EVM: istanbul Optimization: Yes (200 runs)
WAVES.sol 308 lines 
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.6.8;

interface Staking {
  function deposit(address account, uint256 amount) external returns (bool);

  function withdraw(address account) external returns (bool);

  function stake(uint256 reward) external returns (bool);

  event Reward(uint256 id, uint256 amount);
}

interface ERC20 {

  function totalSupply() external view returns (uint256);

  function balanceOf(address account) external view returns (uint256);

  function allowance(address owner, address spender) external view returns (uint256);

  function approve(address spender, uint256 amount) external returns (bool);

  function increaseAllowance(address spender, uint256 addedValue) external returns (bool);

  function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);

  function transfer(address recipient, uint256 amount) external returns (bool);

  function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

abstract contract Ownable {
  address private _owner;
  address private _admin;

  constructor () public {
    _owner = msg.sender;
    _admin = msg.sender;
  }

  modifier onlyOwner() {
    require(_owner == msg.sender || _admin == msg.sender, "Ownable: caller is not the owner or admin");
    _;
  }

  function transferOwnership(address newOwner) external virtual onlyOwner {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    _owner = newOwner;
  }
}

abstract contract Deprecateble is Ownable {
  bool internal deprecated;

  modifier onlyNotDeprecated() {
    require(!deprecated, "Deprecateble: contract is deprecated");
    _;
  }

  function deprecate() external onlyOwner {
    deprecated = true;
    emit Deprecate(msg.sender);
  }

  event Deprecate(address indexed account);
}

abstract contract StandartToken is Staking, ERC20, Ownable, Deprecateble {
  uint256[] private _percents;
  uint256 private _liquidTotalSupply;
  uint256 private _liquidDeposit;
  uint256 constant private PERCENT_FACTOR = 10 ** 12;

  mapping(address => uint256) private _balances;
  mapping(address => uint256) private _deposits;
  mapping(address => uint256) private _rewardIndexForAccount;
  mapping(address => mapping(address => uint256)) private _allowances;

  constructor () public {
    _percents.push(PERCENT_FACTOR);
  }

  function deposit(address account, uint256 amount) external onlyOwner onlyNotDeprecated override virtual returns (bool)  {
    require(amount > 0, "amount should be > 0");
    require(account != address(0), "deposit to the zero address");

    uint256 liquidDeposit = _liquidDeposit;
    require(liquidDeposit + amount >= liquidDeposit, "addition overflow for deposit");
    _liquidDeposit = liquidDeposit + amount;

    uint256 oldDeposit = _deposits[account];
    if (oldDeposit == 0) {
      _balances[account] = balanceOf(account);
      _rewardIndexForAccount[account] = _percents.length - 1;
      _deposits[account] = amount;
    } else {
      uint256 rewardIndex = _rewardIndexForAccount[account];
      if (rewardIndex == _percents.length - 1) {
        require(oldDeposit + amount >= oldDeposit, "addition overflow for deposit");
        _deposits[account] = oldDeposit + amount;
      } else {
        _balances[account] = balanceOf(account);
        _rewardIndexForAccount[account] = _percents.length - 1;
        _deposits[account] = amount;
      }
    }

    emit Transfer(address(0), account, amount);
    return true;
  }

  function stake(uint256 reward) external onlyOwner onlyNotDeprecated override virtual returns (bool) {
    require(reward > 0, "reward should be > 0");

    uint256 liquidTotalSupply = _liquidTotalSupply;
    uint256 liquidDeposit = _liquidDeposit;

    if (liquidTotalSupply == 0) {
      _percents.push(PERCENT_FACTOR);
    } else {
      uint256 oldPercent = _percents[_percents.length - 1];
      uint256 percent = reward * PERCENT_FACTOR / liquidTotalSupply;
      require(percent + PERCENT_FACTOR >= percent, "addition overflow for percent");
      uint256 newPercent = percent + PERCENT_FACTOR;
      _percents.push(newPercent * oldPercent / PERCENT_FACTOR);

      require(liquidTotalSupply + reward >= liquidTotalSupply, "addition overflow for total supply + reward");
      liquidTotalSupply = liquidTotalSupply + reward;
    }

    require(liquidTotalSupply + liquidDeposit >= liquidTotalSupply, "addition overflow for total supply");
    _liquidTotalSupply = liquidTotalSupply + liquidDeposit;
    _liquidDeposit = 0;

    emit Reward(_percents.length, reward);
    return true;
  }

  function withdraw(address account) external onlyOwner onlyNotDeprecated override virtual returns (bool) {
    uint256 oldDeposit = _deposits[account];
    uint256 rewardIndex = _rewardIndexForAccount[account];

    if (rewardIndex == _percents.length - 1) {
      uint256 balance = _balances[account];
      require(balance <= _liquidTotalSupply, "subtraction overflow for total supply");
      _liquidTotalSupply = _liquidTotalSupply - balance;

      require(oldDeposit <= _liquidDeposit, "subtraction overflow for liquid deposit");
      _liquidDeposit = _liquidDeposit - oldDeposit;

      require(balance + oldDeposit >= balance, "addition overflow for total balance + oldDeposit");
      emit Transfer(account, address(0), balance + oldDeposit);
    } else {
      uint256 balance = balanceOf(account);
      uint256 liquidTotalSupply = _liquidTotalSupply;
      require(balance <= liquidTotalSupply, "subtraction overflow for total supply");
      _liquidTotalSupply = liquidTotalSupply - balance;
      emit Transfer(account, address(0), balance);
    }

    _balances[account] = 0;
    _deposits[account] = 0;
    return true;
  }

  // ERC20
  function totalSupply() external view override virtual returns (uint256) {
    uint256 liquidTotalSupply = _liquidTotalSupply;
    uint256 liquidDeposit = _liquidDeposit;

    require(liquidTotalSupply + liquidDeposit >= liquidTotalSupply, "addition overflow for total supply");
    return liquidTotalSupply + liquidDeposit;
  }

  function balanceOf(address account) public view override virtual returns (uint256) {
    uint256 balance = _balances[account];
    uint256 oldDeposit = _deposits[account];

    if (balance == 0 && oldDeposit == 0) {
      return 0;
    }

    uint256 rewardIndex = _rewardIndexForAccount[account];
    if (rewardIndex == _percents.length - 1) {
      require(balance + oldDeposit >= balance, "addition overflow for balance");
      return balance + oldDeposit;
    }

    if (oldDeposit == 0) {
      uint256 profit = _percents[_percents.length - 1];
      return profit * balance / _percents[rewardIndex];
    } else {
      uint256 newBalance = balance * _percents[_percents.length - 1] / _percents[rewardIndex];
      uint256 profit = oldDeposit * _percents[_percents.length - 1] / _percents[rewardIndex + 1];
      require(profit + newBalance >= newBalance, "addition overflow for balance");
      return profit + newBalance;
    }
  }

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

  function _approve(address owner, address spender, uint256 amount) internal onlyNotDeprecated 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);
  }

  function approve(address spender, uint256 amount) external override virtual returns (bool) {
    _approve(msg.sender, spender, amount);
    return true;
  }

  function increaseAllowance(address spender, uint256 addedValue) external override virtual returns (bool) {
    uint256 temp = _allowances[msg.sender][spender];
    require(temp + addedValue >= temp, "addition overflow");
    _approve(msg.sender, spender, temp + addedValue);
    return true;
  }

  function decreaseAllowance(address spender, uint256 subtractedValue) external override virtual returns (bool) {
    uint256 temp = _allowances[msg.sender][spender];
    require(subtractedValue <= temp, "ERC20: decreased allowance below zero");
    _approve(msg.sender, spender, temp - subtractedValue);
    return true;
  }

  function transfer(address recipient, uint256 amount) external override virtual returns (bool) {
    _transfer(msg.sender, recipient, amount);
    return true;
  }

  function transferFrom(address sender, address recipient, uint256 amount) external override virtual returns (bool) {
    _transfer(sender, recipient, amount);

    uint256 temp = _allowances[sender][msg.sender];
    require(amount <= temp, "ERC20: transfer amount exceeds allowance");
    _approve(sender, msg.sender, temp - amount);
    return true;
  }

  function _transfer(address sender, address recipient, uint256 amount) internal onlyNotDeprecated virtual {
    require(amount > 0, "amount should be > 0");
    require(sender != address(0), "ERC20: transfer from the zero address");
    require(recipient != address(0), "ERC20: transfer to the zero address");

    uint256 oldDeposit = _deposits[sender];
    uint256 rewardIndex = _rewardIndexForAccount[sender];
    uint256 depositDiff = 0;

    if (oldDeposit == 0 || rewardIndex != _percents.length - 1) {
      uint256 senderBalance = balanceOf(sender);
      require(amount <= senderBalance, "ERC20: transfer amount exceeds balance");
      _balances[sender] = senderBalance - amount;

      _deposits[sender] = 0;
      _rewardIndexForAccount[sender] = _percents.length - 1;
    } else {
      if (amount <= oldDeposit) {
        _deposits[sender] = oldDeposit - amount;
        depositDiff = amount;
      } else {
        uint256 senderBalance = _balances[sender];
        require(amount - oldDeposit <= senderBalance, "ERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - (amount - oldDeposit);
        _deposits[sender] = 0;
        depositDiff = oldDeposit;
      }
    }

    oldDeposit = _deposits[recipient];
    rewardIndex = _rewardIndexForAccount[recipient];
    if (oldDeposit == 0 || rewardIndex != _percents.length - 1) {
      uint256 recipientBalance = balanceOf(recipient);
      require((amount - depositDiff) + recipientBalance >= recipientBalance, "ERC20: addition overflow for recipient balance");
      _balances[recipient] = recipientBalance + (amount - depositDiff);
      _rewardIndexForAccount[recipient] = _percents.length - 1;
      _deposits[recipient] = depositDiff;
    } else {
      uint256 recipientBalance = _balances[recipient];
      _balances[recipient] = recipientBalance + (amount - depositDiff);
      _deposits[recipient] = oldDeposit + depositDiff;
    }

    emit Transfer(sender, recipient, amount);
  }
}

contract WAVES is StandartToken {
  function name() external pure returns (string memory) {
    return "WAVES";
  }

  function symbol() external pure returns (string memory) {
    return "WAVES";
  }

  function decimals() external pure returns (uint8) {
    return 18;
  }
}

Read Contract

allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
name 0x06fdde03 → string
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256

Write Contract 10 functions

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

approve 0x095ea7b3
address spender
uint256 amount
returns: bool
decreaseAllowance 0xa457c2d7
address spender
uint256 subtractedValue
returns: bool
deposit 0x47e7ef24
address account
uint256 amount
returns: bool
deprecate 0x0fcc0c28
No parameters
increaseAllowance 0x39509351
address spender
uint256 addedValue
returns: bool
stake 0xa694fc3a
uint256 reward
returns: bool
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
transferOwnership 0xf2fde38b
address newOwner
withdraw 0x51cff8d9
address account
returns: bool
Transactions Internal Txs Token Transfers Events

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