Contract Source Code:
File 1 of 1 : EntryToken
pragma solidity ^0.4.21;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
require(a == 0 || c / a == b);
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
}
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
uint256 public totalSupply;
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) public balances;
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
assert(token.transfer(to, value));
}
function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {
assert(token.transferFrom(from, to, value));
}
function safeApprove(ERC20 token, address spender, uint256 value) internal {
assert(token.approve(spender, value));
}
}
/**
* @title TokenTimelock
* @dev TokenTimelock is a token holder contract that will allow a
* beneficiary to extract the tokens after a given release time
*/
contract TokenTimelock {
using SafeERC20 for ERC20Basic;
// ERC20 basic token contract being held
ERC20Basic public token;
// beneficiary of tokens after they are released
address public beneficiary;
// timestamp when token release is enabled
uint256 public releaseTime;
function TokenTimelock(ERC20Basic _token, address _beneficiary, uint256 _releaseTime) public {
// solium-disable-next-line security/no-block-members
require(_releaseTime > block.timestamp);
token = _token;
beneficiary = _beneficiary;
releaseTime = _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public {
// solium-disable-next-line security/no-block-members
require(block.timestamp >= releaseTime);
uint256 amount = token.balanceOf(this);
require(amount > 0);
token.safeTransfer(beneficiary, amount);
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract EntryToken is StandardToken, Ownable {
string public constant name = "Entry Token";
string public constant symbol = "ENTRY";
uint8 public constant decimals = 18;
/// Maximum tokens to be allocated on the sale (55% of the hard cap)
uint256 public constant TOKENS_SALE_HARD_CAP = 325000000000000000000000000; // 325000000 * 10**18
/// Base exchange rate is set to 1 ETH = 6000 ENTRY.
uint256 public constant BASE_RATE = 6000;
/// pre sale start 03.05.2018
uint256 private constant datePreSaleStart = 1525294800;
/// pre sale end time 11.05.2018
uint256 private constant datePreSaleEnd = 1525986000;
/// sale start time 01.06.2018
uint256 private constant dateSaleStart = 1527800400;
/// sale end time 01.09.2018
uint256 private constant dateSaleEnd = 1535749200;
/// pre-sale token cap
uint256 private preSaleCap = 75000000000000000000000000; // Pre-sale 75000000 * 10**18
/// token caps for each round
uint256[25] private stageCaps = [
85000000000000000000000000 , // Stage 1 85000000 * 10**18
95000000000000000000000000 , // Stage 2 95000000 * 10**18
105000000000000000000000000 , // Stage 3 105000000 * 10**18
115000000000000000000000000 , // Stage 4 115000000 * 10**18
125000000000000000000000000 , // Stage 5 125000000 * 10**18
135000000000000000000000000 , // Stage 6 135000000 * 10**18
145000000000000000000000000 , // Stage 7 145000000 * 10**18
155000000000000000000000000 , // Stage 8 155000000 * 10**18
165000000000000000000000000 , // Stage 9 165000000 * 10**18
175000000000000000000000000 , // Stage 10 175000000 * 10**18
185000000000000000000000000 , // Stage 11 185000000 * 10**18
195000000000000000000000000 , // Stage 12 195000000 * 10**18
205000000000000000000000000 , // Stage 13 205000000 * 10**18
215000000000000000000000000 , // Stage 14 215000000 * 10**18
225000000000000000000000000 , // Stage 15 225000000 * 10**18
235000000000000000000000000 , // Stage 16 235000000 * 10**18
245000000000000000000000000 , // Stage 17 245000000 * 10**18
255000000000000000000000000 , // Stage 18 255000000 * 10**18
265000000000000000000000000 , // Stage 19 265000000 * 10**18
275000000000000000000000000 , // Stage 20 275000000 * 10**18
285000000000000000000000000 , // Stage 21 285000000 * 10**18
295000000000000000000000000 , // Stage 22 295000000 * 10**18
305000000000000000000000000 , // Stage 23 305000000 * 10**18
315000000000000000000000000 , // Stage 24 315000000 * 10**18
325000000000000000000000000 // Stage 25 325000000 * 10**18
];
/// tokens rate for each round
uint8[25] private stageRates = [15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 27,
28, 29, 30, 31, 33, 34, 35, 36, 37, 40, 41, 42, 43, 44];
uint64 private constant dateTeamTokensLockedTill = 1630443600;
bool public tokenSaleClosed = false;
address public timelockContractAddress;
function isPreSalePeriod() public constant returns (bool) {
if(totalSupply > preSaleCap || now >= datePreSaleEnd) {
return false;
} else {
return now > datePreSaleStart;
}
}
function isICOPeriod() public constant returns (bool) {
if (totalSupply > TOKENS_SALE_HARD_CAP || now >= dateSaleEnd){
return false;
} else {
return now > dateSaleStart;
}
}
modifier inProgress {
require(totalSupply < TOKENS_SALE_HARD_CAP && !tokenSaleClosed && now >= datePreSaleStart);
_;
}
modifier beforeEnd {
require(!tokenSaleClosed);
_;
}
modifier canBeTraded {
require(tokenSaleClosed);
_;
}
function EntryToken() public {
/// generate private investor tokens
generateTokens(owner, 50000000000000000000000000); // 50000000 * 10**18
}
function () public payable inProgress {
if(isPreSalePeriod()){
buyPreSaleTokens(msg.sender);
} else if (isICOPeriod()){
buyTokens(msg.sender);
}
}
function buyPreSaleTokens(address _beneficiary) internal {
require(msg.value >= 0.01 ether);
uint256 tokens = getPreSaleTokenAmount(msg.value);
require(totalSupply.add(tokens) <= preSaleCap);
generateTokens(_beneficiary, tokens);
owner.transfer(address(this).balance);
}
function buyTokens(address _beneficiary) internal {
require(msg.value >= 0.01 ether);
uint256 tokens = getTokenAmount(msg.value);
require(totalSupply.add(tokens) <= TOKENS_SALE_HARD_CAP);
generateTokens(_beneficiary, tokens);
owner.transfer(address(this).balance);
}
function getPreSaleTokenAmount(uint256 weiAmount)internal pure returns (uint256) {
return weiAmount.mul(BASE_RATE);
}
function getTokenAmount(uint256 weiAmount) internal view returns (uint256 tokens) {
uint256 tokenBase = weiAmount.mul(BASE_RATE);
uint8 stageNumber = currentStageIndex();
tokens = getStageTokenAmount(tokenBase, stageNumber);
while(tokens.add(totalSupply) > stageCaps[stageNumber] && stageNumber < 24){
stageNumber++;
tokens = getStageTokenAmount(tokenBase, stageNumber);
}
}
function getStageTokenAmount(uint256 tokenBase, uint8 stageNumber)internal view returns (uint256) {
uint256 rate = 10000000000000000000/stageRates[stageNumber];
uint256 base = tokenBase/1000000000000000000;
return base.mul(rate);
}
function currentStageIndex() internal view returns (uint8 stageNumber) {
stageNumber = 0;
while(stageNumber < 24 && totalSupply > stageCaps[stageNumber]) {
stageNumber++;
}
}
function buyTokensOnInvestorBehalf(address _beneficiary, uint256 _tokens) public onlyOwner beforeEnd {
generateTokens(_beneficiary, _tokens);
}
function buyTokensOnInvestorBehalfBatch(address[] _addresses, uint256[] _tokens) public onlyOwner beforeEnd {
require(_addresses.length == _tokens.length);
require(_addresses.length <= 100);
for (uint256 i = 0; i < _tokens.length; i = i.add(1)) {
generateTokens(_addresses[i], _tokens[i]);
}
}
function generateTokens(address _beneficiary, uint256 _tokens) internal {
require(_beneficiary != address(0));
totalSupply = totalSupply.add(_tokens);
balances[_beneficiary] = balances[_beneficiary].add(_tokens);
emit Transfer(address(0), _beneficiary, _tokens);
}
function close() public onlyOwner beforeEnd {
/// team tokens are equal to 20% of tokens
uint256 lockedTokens = 118000000000000000000000000; // 118 000 000 * 10**18
// partner tokens for advisors, bouties, SCO 25% of tokens
uint256 partnerTokens = 147000000000000000000000000; // 147 000 0000 * 10**18
// unsold tokens
uint256 unsoldTokens = TOKENS_SALE_HARD_CAP.sub(totalSupply);
generateLockedTokens(lockedTokens);
generatePartnerTokens(partnerTokens);
generateUnsoldTokens(unsoldTokens);
totalSupply = totalSupply.add(lockedTokens+partnerTokens+unsoldTokens);
tokenSaleClosed = true;
owner.transfer(address(this).balance);
}
function generateLockedTokens(uint lockedTokens) internal{
TokenTimelock lockedTeamTokens = new TokenTimelock(this, owner, dateTeamTokensLockedTill);
timelockContractAddress = address(lockedTeamTokens);
balances[timelockContractAddress] = balances[timelockContractAddress].add(lockedTokens);
emit Transfer(address(0), timelockContractAddress, lockedTokens);
}
function generatePartnerTokens(uint partnerTokens) internal{
balances[owner] = balances[owner].add(partnerTokens);
emit Transfer(address(0), owner, partnerTokens);
}
function generateUnsoldTokens(uint unsoldTokens) internal{
balances[owner] = balances[owner].add(unsoldTokens);
emit Transfer(address(0), owner, unsoldTokens);
}
function transferFrom(address _from, address _to, uint256 _value) public canBeTraded returns (bool) {
return super.transferFrom(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public canBeTraded returns (bool) {
return super.transfer(_to, _value);
}
}