Contract Source Code:
File 1 of 1 : Ezoow
pragma solidity 0.4.24;
// ----------------------------------------------------------------------------
// 'Ezoow' contract
//
// Deployed to : 0x7acA75682eDd35355917B8bdDD85fc0821b3cc8f
// Symbol : EZW
// Name : Ezoow
// Total supply: 15,000,000,000
// Decimals : 18
//
// Copyright (c) 2018 Ezoow Inc. (https://ezoow.com) The MIT Licence.
// Contract designed by: GDO Infotech Pvt Ltd (https://GDO.co.in)
// ----------------------------------------------------------------------------
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract owned {
address public owner;
using SafeMath for uint256;
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external ; }
contract TokenERC20 {
// Public variables of the token
using SafeMath for uint256;
string public name = "EZOOW";
string public symbol = "EZW";
uint8 public decimals = 18; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public totalSupply = 15000000000 * (1 ether);
uint256 public tokensForCrowdsale = 10000000000 * (1 ether);
uint256 public tokensForTeam = 4000000000 * (1 ether);
uint256 public tokensForOwner = 1000000000 * (1 ether);
address public teamWallet = 0x7acA75682eDd35355917B8bdDD85fc0821b3cc8f;
// This creates an array with all balances
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
// This generates a public event on the blockchain that will notify clients
event Transfer(address indexed from, address indexed to, uint256 value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
balanceOf[this] = tokensForCrowdsale; // 10 Billion will remain in contract for crowdsale
balanceOf[teamWallet] = tokensForTeam; // 4 Billion will be allocated to Team
balanceOf[msg.sender] = tokensForOwner; // 1 Billon will be sent to contract owner
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal {
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Check if the sender has enough
require(balanceOf[_from] >= _value);
// Check for overflows
require(balanceOf[_to].add(_value) > balanceOf[_to]);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from].add(balanceOf[_to]);
// Subtract from the sender
balanceOf[_from] = balanceOf[_from].sub(_value);
// Add the same to the recipient
balanceOf[_to] = balanceOf[_to].add(_value);
emit Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` in behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens in your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* Set allowance for other address and notify
*
* Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
* @param _extraData some extra information to send to the approved contract
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value); // Check if the sender has enough
balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value); // Subtract from the sender
totalSupply = totalSupply.sub(_value); // Updates totalSupply
emit Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value); // Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]); // Check allowance
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the targeted balance
allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value); // Subtract from the sender's allowance
totalSupply = totalSupply.sub(_value); // Update totalSupply
emit Burn(_from, _value);
return true;
}
}
/******************************************/
/* ADVANCED TOKEN STARTS HERE */
/******************************************/
contract Ezoow is owned, TokenERC20 {
using SafeMath for uint256;
uint256 public startTime = 0; //client wants ICO run Infinite time, so startTimeStamp 0
uint256 public endTime = 9999999999999999999999; //and entTimeStamp higher number
uint256 public exchangeRate = 20000000; // this is how many tokens for 1 Ether
uint256 public tokensSold = 0; // how many tokens sold in crowdsale
mapping (address => bool) public frozenAccount;
/* This generates a public event on the blockchain that will notify clients */
event FrozenFunds(address target, bool frozen);
/* Initializes contract with initial supply tokens to the creator of the contract */
constructor() TokenERC20() public {}
/* Internal transfer, only can be called by this contract */
function _transfer(address _from, address _to, uint _value) internal {
require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead
require (balanceOf[_from] >= _value); // Check if the sender has enough
require (balanceOf[_to].add(_value) >= balanceOf[_to]); // Check for overflows
require(!frozenAccount[_from]); // Check if sender is frozen
require(!frozenAccount[_to]); // Check if recipient is frozen
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the sender
balanceOf[_to] = balanceOf[_to].add(_value); // Add the same to the recipient
emit Transfer(_from, _to, _value);
}
//@dev fallback function, only accepts ether if ICO is running or Reject
function () payable public {
require(endTime > now);
require(startTime < now);
uint ethervalueWEI=msg.value;
// calculate token amount to be sent
uint256 token = ethervalueWEI.mul(exchangeRate); //weiamount * price
tokensSold = tokensSold.add(token);
_transfer(this, msg.sender, token); // makes the transfers
forwardEherToOwner();
}
//Automatocally forwards ether from smart contract to owner address
function forwardEherToOwner() internal {
owner.transfer(msg.value);
}
//function to start an ICO.
//It requires: start and end timestamp, exchange rate in Wei, and token amounts to allocate for the ICO
//It will transfer allocated amount to the smart contract
function startIco(uint256 start,uint256 end, uint256 exchangeRateInWei, uint256 TokensAllocationForICO) onlyOwner public {
require(start < end);
uint256 tokenAmount = TokensAllocationForICO.mul(1 ether);
require(balanceOf[msg.sender] > tokenAmount);
startTime=start;
endTime=end;
exchangeRate = exchangeRateInWei;
approve(this,tokenAmount);
transfer(this,tokenAmount);
}
//Stops an ICO.
//It will also transfer remaining tokens to owner
function stopICO() onlyOwner public{
endTime = 0;
uint256 tokenAmount=balanceOf[this];
_transfer(this, msg.sender, tokenAmount);
}
//function to check wheter ICO is running or not.
function isICORunning() public view returns(bool){
if(endTime > now && startTime < now){
return true;
}else{
return false;
}
}
//Function to set ICO Exchange rate.
function setICOExchangeRate(uint256 newExchangeRate) onlyOwner public {
exchangeRate=newExchangeRate;
}
//Just in case, owner wants to transfer Tokens from contract to owner address
function manualWithdrawToken(uint256 _amount) onlyOwner public {
uint256 tokenAmount = _amount.mul(1 ether);
_transfer(this, msg.sender, tokenAmount);
}
//Just in case, owner wants to transfer Ether from contract to owner address
function manualWithdrawEther()onlyOwner public{
uint256 amount=address(this).balance;
owner.transfer(amount);
}
/// @notice Create `mintedAmount` tokens and send it to `target`
/// @param target Address to receive the tokens
/// @param mintedAmount the amount of tokens it will receive
function mintToken(address target, uint256 mintedAmount) onlyOwner public {
balanceOf[target] = balanceOf[target].add(mintedAmount);
totalSupply = totalSupply.add(mintedAmount);
emit Transfer(0, this, mintedAmount);
emit Transfer(this, target, mintedAmount);
}
/// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
/// @param target Address to be frozen
/// @param freeze either to freeze it or not
function freezeAccount(address target, bool freeze) onlyOwner public {
frozenAccount[target] = freeze;
emit FrozenFunds(target, freeze);
}
}