// Contract address: 0x9ed04a9cde3222ffca0ed2e3c9cb3eb1aa4897e2 // Contract name: Circle // Etherscan link: https://etherscan.io/address/0x9ed04a9cde3222ffca0ed2e3c9cb3eb1aa4897e2#code pragma solidity ^0.4.18; // File: contracts/zeppelin/ownership/Ownable.sol /** * @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)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } // File: contracts/zeppelin/math/SafeMath.sol /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ 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; } /** * @dev Integer division of two numbers, truncating the quotient. */ 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 a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } // File: contracts/zeppelin/token/ERC20/ERC20Basic.sol /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); 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); } // File: contracts/zeppelin/token/ERC20/BasicToken.sol /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @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]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); 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]; } } // File: contracts/zeppelin/token/ERC20/ERC20.sol /** * @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); } // File: contracts/zeppelin/token/ERC20/StandardToken.sol /** * @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); 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; 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) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a 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 * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } // File: contracts/zeppelin/token/ERC20/MintableToken.sol /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); Mint(_to, _amount); Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; MintFinished(); return true; } } // File: contracts/Circle.sol contract Circle is MintableToken { string public name = "Circle Plus"; string public symbol = "Circle"; uint8 public decimals = 18; } // File: contracts/zeppelin/crowdsale/Crowdsale.sol /** * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale, * allowing investors to purchase tokens with ether. This contract implements * such functionality in its most fundamental form and can be extended to provide additional * functionality and/or custom behavior. * The external interface represents the basic interface for purchasing tokens, and conform * the base architecture for crowdsales. They are *not* intended to be modified / overriden. * The internal interface conforms the extensible and modifiable surface of crowdsales. Override * the methods to add functionality. Consider using 'super' where appropiate to concatenate * behavior. */ contract Crowdsale { using SafeMath for uint256; // The token being sold ERC20 public token; // Address where funds are collected address public wallet; // How many token units a buyer gets per wei uint256 public rate; // Amount of wei raised uint256 public weiRaised; /** * Event for token purchase logging * @param purchaser who paid for the tokens * @param beneficiary who got the tokens * @param value weis paid for purchase * @param amount amount of tokens purchased */ event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount); /** * @param _rate Number of token units a buyer gets per wei * @param _wallet Address where collected funds will be forwarded to * @param _token Address of the token being sold */ function Crowdsale(uint256 _rate, address _wallet, ERC20 _token) public { require(_rate > 0); require(_wallet != address(0)); require(_token != address(0)); rate = _rate; wallet = _wallet; token = _token; } // ----------------------------------------- // Crowdsale external interface // ----------------------------------------- /** * @dev fallback function ***DO NOT OVERRIDE*** */ function () external payable { buyTokens(msg.sender); } /** * @dev low level token purchase ***DO NOT OVERRIDE*** * @param _beneficiary Address performing the token purchase */ function buyTokens(address _beneficiary) public payable { uint256 weiAmount = msg.value; _preValidatePurchase(_beneficiary, weiAmount); // calculate token amount to be created uint256 tokens = _getTokenAmount(weiAmount); // update state weiRaised = weiRaised.add(weiAmount); _processPurchase(_beneficiary, tokens); TokenPurchase(msg.sender, _beneficiary, weiAmount, tokens); _updatePurchasingState(_beneficiary, weiAmount); _forwardFunds(); _postValidatePurchase(_beneficiary, weiAmount); } // ----------------------------------------- // Internal interface (extensible) // ----------------------------------------- /** * @dev Validation of an incoming purchase. Use require statements to revert state when conditions are not met. Use super to concatenate validations. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { require(_beneficiary != address(0)); require(_weiAmount != 0); } /** * @dev Validation of an executed purchase. Observe state and use revert statements to undo rollback when valid conditions are not met. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _postValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Source of tokens. Override this method to modify the way in which the crowdsale ultimately gets and sends its tokens. * @param _beneficiary Address performing the token purchase * @param _tokenAmount Number of tokens to be emitted */ function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { token.transfer(_beneficiary, _tokenAmount); } /** * @dev Executed when a purchase has been validated and is ready to be executed. Not necessarily emits/sends tokens. * @param _beneficiary Address receiving the tokens * @param _tokenAmount Number of tokens to be purchased */ function _processPurchase(address _beneficiary, uint256 _tokenAmount) internal { _deliverTokens(_beneficiary, _tokenAmount); } /** * @dev Override for extensions that require an internal state to check for validity (current user contributions, etc.) * @param _beneficiary Address receiving the tokens * @param _weiAmount Value in wei involved in the purchase */ function _updatePurchasingState(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Override to extend the way in which ether is converted to tokens. * @param _weiAmount Value in wei to be converted into tokens * @return Number of tokens that can be purchased with the specified _weiAmount */ function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256) { return _weiAmount.mul(rate); } /** * @dev Determines how ETH is stored/forwarded on purchases. */ function _forwardFunds() internal { wallet.transfer(msg.value); } } // File: contracts/zeppelin/crowdsale/emission/MintedCrowdsale.sol /** * @title MintedCrowdsale * @dev Extension of Crowdsale contract whose tokens are minted in each purchase. * Token ownership should be transferred to MintedCrowdsale for minting. */ contract MintedCrowdsale is Crowdsale { /** * @dev Overrides delivery by minting tokens upon purchase. * @param _beneficiary Token purchaser * @param _tokenAmount Number of tokens to be minted */ function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { require(MintableToken(token).mint(_beneficiary, _tokenAmount)); } } // File: contracts/zeppelin/crowdsale/validation/TimedCrowdsale.sol /** * @title TimedCrowdsale * @dev Crowdsale accepting contributions only within a time frame. */ contract TimedCrowdsale is Crowdsale { using SafeMath for uint256; uint256 public openingTime; uint256 public closingTime; /** * @dev Reverts if not in crowdsale time range. */ modifier onlyWhileOpen { require(block.timestamp >= openingTime && block.timestamp <= closingTime); _; } /** * @dev Constructor, takes crowdsale opening and closing times. * @param _openingTime Crowdsale opening time * @param _closingTime Crowdsale closing time */ function TimedCrowdsale(uint256 _openingTime, uint256 _closingTime) public { require(_openingTime >= block.timestamp); require(_closingTime >= _openingTime); openingTime = _openingTime; closingTime = _closingTime; } /** * @dev Checks whether the period in which the crowdsale is open has already elapsed. * @return Whether crowdsale period has elapsed */ function hasClosed() public view returns (bool) { return block.timestamp > closingTime; } /** * @dev Extend parent behavior requiring to be within contributing period * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal onlyWhileOpen { super._preValidatePurchase(_beneficiary, _weiAmount); } } // File: contracts/zeppelin/token/ERC20/SafeERC20.sol /** * @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)); } } // File: contracts/zeppelin/token/ERC20/TokenTimelock.sol /** * @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 { require(_releaseTime > block.timestamp); token = _token; beneficiary = _beneficiary; releaseTime = _releaseTime; } /** * @notice Transfers tokens held by timelock to beneficiary. */ function release() public { require(block.timestamp >= releaseTime); uint256 amount = token.balanceOf(this); require(amount > 0); token.safeTransfer(beneficiary, amount); } } // File: contracts/zeppelin/token/ERC20/TokenVesting.sol /** * @title TokenVesting * @dev A token holder contract that can release its token balance gradually like a * typical vesting scheme, with a cliff and vesting period. Optionally revocable by the * owner. */ contract TokenVesting is Ownable { using SafeMath for uint256; using SafeERC20 for ERC20Basic; event Released(uint256 amount); event Revoked(); // beneficiary of tokens after they are released address public beneficiary; uint256 public cliff; uint256 public start; uint256 public duration; bool public revocable; mapping (address => uint256) public released; mapping (address => bool) public revoked; /** * @dev Creates a vesting contract that vests its balance of any ERC20 token to the * _beneficiary, gradually in a linear fashion until _start + _duration. By then all * of the balance will have vested. * @param _beneficiary address of the beneficiary to whom vested tokens are transferred * @param _cliff duration in seconds of the cliff in which tokens will begin to vest * @param _duration duration in seconds of the period in which the tokens will vest * @param _revocable whether the vesting is revocable or not */ function TokenVesting( address _beneficiary, uint256 _start, uint256 _cliff, uint256 _duration, bool _revocable ) public { require(_beneficiary != address(0)); require(_cliff <= _duration); beneficiary = _beneficiary; revocable = _revocable; duration = _duration; cliff = _start.add(_cliff); start = _start; } /** * @notice Transfers vested tokens to beneficiary. * @param token ERC20 token which is being vested */ function release(ERC20Basic token) public { uint256 unreleased = releasableAmount(token); require(unreleased > 0); released[token] = released[token].add(unreleased); token.safeTransfer(beneficiary, unreleased); Released(unreleased); } /** * @notice Allows the owner to revoke the vesting. Tokens already vested * remain in the contract, the rest are returned to the owner. * @param token ERC20 token which is being vested */ function revoke(ERC20Basic token) public onlyOwner { require(revocable); require(!revoked[token]); uint256 balance = token.balanceOf(this); uint256 unreleased = releasableAmount(token); uint256 refund = balance.sub(unreleased); revoked[token] = true; token.safeTransfer(owner, refund); Revoked(); } /** * @dev Calculates the amount that has already vested but hasn't been released yet. * @param token ERC20 token which is being vested */ function releasableAmount(ERC20Basic token) public view returns (uint256) { return vestedAmount(token).sub(released[token]); } /** * @dev Calculates the amount that has already vested. * @param token ERC20 token which is being vested */ function vestedAmount(ERC20Basic token) public view returns (uint256) { uint256 currentBalance = token.balanceOf(this); uint256 totalBalance = currentBalance.add(released[token]); if (block.timestamp < cliff) { return 0; } else if (block.timestamp >= start.add(duration) || revoked[token]) { return totalBalance; } else { return totalBalance.mul(block.timestamp.sub(start)).div(duration); } } } // File: contracts/CircleCrowdsale.sol contract CircleCrowdsale is Ownable, MintedCrowdsale { // Crowdsale Stage // ============ enum CrowdsaleStage { AngelRound, PreSaleRound, OpenRound} // Token Distribution // ============================= uint256 public totalSupplyMax = 2000000000 * (10 ** 18); // There will be total 2,000,000,000 Circle Tokens uint256 public angelRound = 200000000 * (10 ** 18); // Angel Investors 200,000,000 (10%) uint256 public preSaleRound = 400000000 * (10 ** 18); // PreSale Round 400,000,000 (20%) uint256 public openRound = 200000000 * (10 ** 18); // Open Round 100,000,000 (10%) uint256 public teamFund = 400000000 * (10 ** 18); // Team/Foundation 400,000,000 (20%) cliff 6mon uint256 public communityFund = 400000000 * (10 ** 18); // Community 400,000,000 (20%) uint256 public marketingFund = 400000000 * (10 ** 18); // Marketing 400,000,000 (20%) // ============================== // Amount minted in Every Stage // ================== uint256 public totalTokenMintedAngel; uint256 public totalTokenMintedPreSale; uint256 public totalTokenMintedOpen; uint256 public totalTeamFundMinted; uint256 public totalCommunityFundMinted; uint256 public totalMarketingFundMinted; // =================== // Stage Rate // ============ uint256 private _angelRate = 60000; uint256 private _preSaleRate = 30000; uint256 private _openRate = 20000; // ============ // angel locked tokens TokenTimelock public angelTimeLock; // team vesting tokens TokenVesting public teamTokenVesting; // team vesting uint256 public constant TEAM_VESTING_CLIFF = 6 * 30 days; uint256 public constant TEAM_VESTING_DURATION = 2 years; ERC20 _token = new Circle(); // Constructor // ============ function CircleCrowdsale(uint256 _rate, address _wallet) public Crowdsale(_rate, _wallet, _token) { } // ============= function() external payable { revert(); } function buyTokens(address _beneficiary) public payable { revert(); } function investByLegalTender(address _beneficiary, uint256 _value, uint _stage) onlyOwner external returns (bool) { uint256 _amount; if (_stage == uint(CrowdsaleStage.PreSaleRound)) { _amount = _preSaleRate * _value; if (totalTokenMintedPreSale + _amount > preSaleRound) { return false; } MintableToken(token).mint(_beneficiary, _amount); totalTokenMintedPreSale += _amount; } else if (_stage == uint(CrowdsaleStage.OpenRound)) { _amount = _openRate * _value; if (totalTokenMintedOpen + _amount > preSaleRound) { return false; } MintableToken(token).mint(_beneficiary, _amount); totalTokenMintedOpen += _amount; } else { return false; } return true; } function setAngelHolder(address _angelFundWallet) onlyOwner external { if (angelRound - totalTokenMintedAngel > 0) { angelTimeLock = new TokenTimelock(token, _angelFundWallet, uint64(now + 90 days)); MintableToken(token).mint(angelTimeLock, angelRound - totalTokenMintedAngel); totalTokenMintedAngel = angelRound - totalTokenMintedAngel; } } function setReservedHolder(address _teamFundWallet, address _communityFundWallet, address _marketingFundWallet) onlyOwner external { if (teamFund - totalTeamFundMinted > 0) { teamTokenVesting = new TokenVesting(_teamFundWallet, now, TEAM_VESTING_CLIFF, TEAM_VESTING_DURATION, true); MintableToken(token).mint(teamTokenVesting, teamFund - totalTeamFundMinted); totalTeamFundMinted = teamFund - totalTeamFundMinted; } if (communityFund - totalCommunityFundMinted > 0) { MintableToken(token).mint(_communityFundWallet, communityFund - totalCommunityFundMinted); totalCommunityFundMinted += communityFund - totalCommunityFundMinted; } if (marketingFund - totalMarketingFundMinted > 0) { MintableToken(token).mint(_marketingFundWallet, marketingFund - totalMarketingFundMinted); totalMarketingFundMinted += marketingFund - totalMarketingFundMinted; } } }
v0.4.21