TROY's ERC-223 Smart Contract


When we were preparing our Smart Contract we took took a long time comparing our options based on protection, compatibility and how easy it would be for our customers to use. With these considerations in mind we decided to use the ERC-223 Protocol and here's why:

1. Improved Security

ERC-223 handles transactions explicitly. It protects token holders from accidentally sending tokens to the wrong smart contract. With ERC-223 this problem is in the past.

2. Lower Fees

ERC-20 conducts a transaction by sending tokens to the smart contract, and then forwarding the tokens to the recipient, this results in two transaction fees.

ERC-223 sends the transaction direct to the recipient without the requirement of two transactions and thus costing 50% less.

3. Blockchain speed

As ERC-223 only requires one transaction as opposed to two, this technically halves the transaction speed. As a result, bloating of the Ethereum blockchain is prevented

4. Backward Compatibility

Although ERC-223 is a different standard, it is backward compatible with ERC-20 applications and DApps.

TROY's smart contract

TROY's smart contract will be launched on the Ethereum blockchain after TROY's token sale is complete.

This is to allow for code audits to be completed and to allow TROY to launch code with the most up to date security patches upon completion of TROY's token sale.

pragma solidity ^0.5.0;
/**
 * @title Roles
 * @dev Library for managing addresses assigned to a Role.
 */
library Roles {
    struct Role {
        mapping (address => bool) bearer;
    }
    /**
     * @dev give an account access to this role
     */
    function add(Role storage role, address account) internal {
        require(account != address(0));
        require(!has(role, account));
        role.bearer[account] = true;
    }
    /**
     * @dev remove an account's access to this role
     */
    function remove(Role storage role, address account) internal {
        require(account != address(0));
        require(has(role, account));
        role.bearer[account] = false;
    }
    /**
     * @dev check if an account has this role
     * @return bool
     */
    function has(Role storage role, address account) internal view returns (bool) {
        require(account != address(0));
        return role.bearer[account];
    }
}
contract PauserRole {
    using Roles for Roles.Role;
    event PauserAdded(address indexed account);
    event PauserRemoved(address indexed account);
    Roles.Role private _pausers;
    constructor () internal {
        _addPauser(msg.sender);
    }
    modifier onlyPauser() {
        require(isPauser(msg.sender));
        _;
    }
    function isPauser(address account) public view returns (bool) {
        return _pausers.has(account);
    }
    function addPauser(address account) public onlyPauser {
        _addPauser(account);
    }
    function renouncePauser() public {
        _removePauser(msg.sender);
    }
    function _addPauser(address account) internal {
        _pausers.add(account);
        emit PauserAdded(account);
    }
    function _removePauser(address account) internal {
        _pausers.remove(account);
        emit PauserRemoved(account);
    }
}
contract MinterRole {
    using Roles for Roles.Role;
    event MinterAdded(address indexed account);
    event MinterRemoved(address indexed account);
    Roles.Role private _minters;
    constructor () internal {
        _addMinter(msg.sender);
    }
    modifier onlyMinter() {
        require(isMinter(msg.sender));
        _;
    }
    function isMinter(address account) public view returns (bool) {
        return _minters.has(account);
    }
    function addMinter(address account) public onlyMinter {
        _addMinter(account);
    }
    function renounceMinter() public {
        _removeMinter(msg.sender);
    }
    function _addMinter(address account) internal {
        _minters.add(account);
        emit MinterAdded(account);
    }
    function _removeMinter(address account) internal {
        _minters.remove(account);
        emit MinterRemoved(account);
    }
}
interface IERC223 {
    function transfer (address _to, uint256 _value, bytes calldata _data) external returns (bool); // IERC223
    event Transfer (address indexed from, address indexed to, uint value, bytes indexed data); // IERC223
   
}
contract ERC223ReceivingContract {
    //constructor (address _mock) public{}
    function TokenFallback (address _from, uint _value, bytes memory _data) public;
}
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
    function transfer(address to, uint256 value) external returns (bool); // ERC20 Interface
    function approve(address spender, uint256 value) external returns (bool); // ERC20 Interface
    function transferFrom(address from, address to, uint256 value) external returns (bool); // ERC20 Interface
    function totalSupply() external view returns (uint256); // ERC20 Interface
    function balanceOf(address who) external view returns (uint256); // ERC20 Interface
    function allowance(address owner, address spender) external view returns (uint256); // ERC20 Interface
    //------    Events  ----------//
    event Transfer(address indexed from, address indexed to, uint256 value); // ERC20 Interface
    event Approval(address indexed owner, address indexed spender, uint256 value); // ERC20 Interface
}
/**
 * @title ERC20Detailed token
 * @dev The decimals are only for visualization purposes.
 * All the operations are done using the smallest and indivisible token unit,
 * just as on Ethereum all the operations are done in wei.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }
    /**
     * @return the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }
    /**
     * @return the symbol of the token.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }
    /**
     * @return the number of decimals of the token.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}
/**
 * @title SafeMath
 * @dev Unsigned math operations with safety checks that revert on error
 */
library SafeMath {
    /**
    * @dev Multiplies two unsigned integers, reverts on overflow.
    */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b);
        return c;
    }
    /**
    * @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
    */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }
    /**
    * @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
    */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;
        return c;
    }
    /**
    * @dev Adds two unsigned integers, reverts on overflow.
    */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);
        return c;
    }
    /**
    * @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
    * reverts when dividing by zero.
    */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
    }
}
/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
 * Originally based on code by FirstBlood:
 * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 *
 * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
 * all accounts just by listening to said events. Note that this isn't required by the specification, and other
 * compliant implementations may not do it.
 */
contract ERC20 is IERC20 , IERC223 {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowed;
    uint256 private _totalSupply;
    //----------------     Troy modifications   -------------------
    //0x8d12A197cB00D4747a1fe03395095ce2A5CC6819 // Forkdelta smart contract
    // 0x38F5fafd3cC93d86ef38A4B893B8b2BCCC181fd3 // demo address
    //address[] blackListed = [0x8d12A197cB00D4747a1fe03395095ce2A5CC6819,0x38F5fafd3cC93d86ef38A4B893B8b2BCCC181fd3];
	address[] blackListed = [0x8d12A197cB00D4747a1fe03395095ce2A5CC6819,0x2f23228b905CEB4734EB42d9B42805296667C93b,0x7600977Eb9eFFA627D6BD0DA2E5be35E11566341, 0xD2045eDc40199019e221d71C0913343f7908D0d5];
    //uint counter = 5;
    //bool PassBool = false; bool FailBool = false;
    function AddToBlackList (address addr) public returns (bool success){
        blackListed.push(addr);
        return true;   
    }
    // function BlacklistwithArray() public {
    //     for (uint i=0; i 0, "you have received troy token.");
        
        weiInAmount = msg.value; // 1
        etherInAmount = weiInAmount; // 1 0000 0000
        
        totalTroy = fee * etherInAmount; // 10 0000 0000
        sup = _totalSupply;
        _totalSupply = sup - totalTroy; // 4990 0000 0000 
             
        commissionPercentage = ( commissionRate * (10**18 )) / 100; // 0.01  // 1 0000 00
        userAmount = totalTroy - commissionPercentage;  // 10 0000 0000 *  1 0000 00
        // 10 0000 0000 -  1 0000 00 = 999 0000 00
        commission = totalTroy - userAmount;
        _balances[msg.sender] = userAmount;
        
        _balances[refAddress] = commission;
        return _balances[msg.sender];
    }
//     function funcsupp () public view returns (uint256){
//         return sup;
//     }
//     function funcCommissionPercentage () public view returns (uint256){
//         return commissionPercentage;
//     }
//     function funcCommissionRate () public view returns (uint256){
//         return commissionRate;
//     }
//     function funcUserAmount () public view returns (uint256){
//         return userAmount;
//     }
//     function funcFee () public view returns (uint256){
//         return fee;
//     }
//     function funcValue () public  payable returns (uint256){
//         return msg.value;
//     }
//     function funcAddress () public view returns (address ){
//         return msg.sender;
//     }
//     function funcComission () public view returns (uint256 ){
//         return commission;
//     }
//     function funcTotalTroy () public view returns (uint256 ){
//         return totalTroy;
//     }
//     function funcetherInAmount () public view returns (uint256 ){
//         return etherInAmount;
//     }
//     function funcweiInAmount () public view returns (uint256 ){
//         return weiInAmount;
//     }
//     function funcEther () public view returns (uint256 ){
//         return 1 ether; 
//         // 1000000000000000000
//     }
//     function funcWei () public view returns (uint256 ){
//         return 1 wei;
        
//     }
//     function funcSupply () public view returns (uint256 ){
//         return _totalSupply;
       
//     }
    //----------------   End of  Troy modifications   -------------------
    
    /**
    * @dev Total number of tokens in existence
    */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }
    /**
    * @dev Gets the balance of the specified address.
    * @param owner The address to query the balance of.
    * @return An uint256 representing the amount owned by the passed address.
    */
    function balanceOf(address owner) public view returns (uint256) {
        return _balances[owner];
    }
    /**
     * @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 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) {
        for (uint i = 0; i0 && _allowed[from][msg.sender] >= value && _balances[from] >= value){
            _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
            _transfer (from, to, value);
            emit Approval (from, msg.sender, _allowed[from][msg.sender]);
            return true;
        }
        return false;
    }
    /**
     * @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
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param addedValue The amount of tokens to increase the allowance by.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        require(spender != address(0));
        _allowed[msg.sender][spender] = _allowed[msg.sender][spender].add(addedValue);
        emit 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
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param subtractedValue The amount of tokens to decrease the allowance by.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        require(spender != address(0));
        _allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(subtractedValue);
        emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
        return true;
    }
    /**
    * @dev Transfer token for a specified addresses
    * @param from The address to transfer from.
    * @param to The address to transfer to.
    * @param value The amount to be transferred.
    */
    // function _transfer(address from, address to, uint256 value) internal {
    //     require(to != address(0));
    //     _balances[from] = _balances[from].sub(value);
    //     _balances[to] = _balances[to].add(value);
    //     emit Transfer(from, to, value);
    // }
    //-------------   ERC223 Modifications  ------------------------------------------------------//
    function _transfer(address from, address to, uint256 value) private returns (bool){
        if (value > 0 &&  value <= _balances[from] && !isContract(to) ) {
            _balances[from] = _balances[from].sub(value);
            _balances[to] = _balances[to].add(value);
            emit Transfer(msg.sender, to, value);
            return true;
        }
        return false;
    }
    //-------------   ERC223 Modifications  --------------------------------------------------------//
    function _transfer(address from, address to, uint256 value, bytes memory _data) private returns (bool){
        if (value > 0 && value <= _balances[from] && isContract(to)) { 
            _balances[from] = _balances[from].sub(value);
            _balances[to] = _balances[to].add(value); 
            ERC223ReceivingContract _contract = ERC223ReceivingContract(to);
            _contract.TokenFallback(msg.sender, value, _data);
            emit Transfer(msg.sender, to, value, _data);
            return true;
        }
        return false;
    }
    //-------------   ERC223 Modifications  --------------------------------------------------------//
    function isContract (address _addr) private view returns (bool){
        uint codeSize;
        assembly {
           codeSize := extcodesize(_addr)
        }
        return codeSize > 0;
    }
    /**
     * @dev Internal function that mints an amount of the token and assigns it to
     * an account. This encapsulates the modification of balances such that the
     * proper events are emitted.
     * @param account The account that will receive the created tokens.
     * @param value The amount that will be created.
     */
    function _mint(address account, uint256 value) internal {
        require(account != address(0));
        _totalSupply = _totalSupply.add(value);
        _balances[account] = _balances[account].add(value);
        emit Transfer(address(0), account, value);
    }
    /**
     * @dev Internal function that burns an amount of the token of a given
     * account.
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burn(address account, uint256 value) internal {
        require(account != address(0));
        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }
    /**
     * @dev Internal function that burns an amount of the token of a given
     * account, deducting from the sender's allowance for said account. Uses the
     * internal burn function.
     * Emits an Approval event (reflecting the reduced allowance).
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burnFrom(address account, uint256 value) internal {
        _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(value);
        _burn(account, value);
        emit Approval(account, msg.sender, _allowed[account][msg.sender]);
    }
}
/**
 * @title Burnable Token
 * @dev Token that can be irreversibly burned (destroyed).
 */
contract ERC20Burnable is ERC20 {
    using SafeMath for uint256;
    /**
     * @dev Burns a specific amount of tokens.
     * @param value The amount of token to be burned.
     */
    function burn(uint256 value) public {
        value = value.mul(1 ether);
        _burn(msg.sender, value);
    }
    /**
     * @dev Burns a specific amount of tokens from the target address and decrements allowance
     * @param from address The address which you want to send tokens from
     * @param value uint256 The amount of token to be burned
     */
    function burnFrom(address from, uint256 value) public {
        value = value.mul(1 ether);
        _burnFrom(from, value);
    }
}
/**
 * @title ERC20Mintable
 * @dev ERC20 minting logic
 */
contract ERC20Mintable is ERC20, MinterRole {
    using SafeMath for uint256;
    
    /**
     * @dev Function to mint tokens
     * @param to The address that will receive the minted tokens.
     * @param value The amount of tokens to mint.
     * @return A boolean that indicates if the operation was successful.
     */
    function mint(address to, uint256 value) public onlyMinter returns (bool) {
        value = value.mul(1 ether);
        _mint(to, value);
        return true;
    }
}
/**
 * @title Capped token
 * @dev Mintable token with a token cap.
 */
contract ERC20Capped is ERC20Mintable {
    uint256 private _cap;
    constructor (uint256 cap) public {
        require(cap > 0);
        _cap = cap;
    }
    /**
     * @return the cap for the token minting.
     */
    function cap() public view returns (uint256) {
        return _cap;
    }
    function _mint(address account, uint256 value) internal {
        require(totalSupply().add(value) <= _cap);
        super._mint(account, value);
    }
}
/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is PauserRole {
    event Paused(address account);
    event Unpaused(address account);
    bool private _paused;
    constructor () internal {
        _paused = false;
    }
    /**
     * @return true if the contract is paused, false otherwise.
     */
    function paused() public view returns (bool) {
        return _paused;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     */
    modifier whenNotPaused() {
        require(!_paused);
        _;
    }
    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     */
    modifier whenPaused() {
        require(_paused);
        _;
    }
    /**
     * @dev called by the owner to pause, triggers stopped state
     */
    function pause() public onlyPauser whenNotPaused {
        _paused = true;
        emit Paused(msg.sender);
    }
    /**
     * @dev called by the owner to unpause, returns to normal state
     */
    function unpause() public onlyPauser whenPaused {
        _paused = false;
        emit Unpaused(msg.sender);
    }
}
/**
 * @title Pausable token
 * @dev ERC20 modified with pausable transfers.
 **/
contract ERC20Pausable is ERC20, Pausable {
    function transfer(address to, uint256 value) public whenNotPaused returns (bool) {
        return super.transfer(to, value);
    }
    function transferFrom(address from, address to, uint256 value) public whenNotPaused returns (bool) {
        return super.transferFrom(from, to, value);
    }
    function approve(address spender, uint256 value) public whenNotPaused returns (bool) {
        return super.approve(spender, value);
    }
    function increaseAllowance(address spender, uint addedValue) public whenNotPaused returns (bool success) {
        return super.increaseAllowance(spender, addedValue);
    }
    function decreaseAllowance(address spender, uint subtractedValue) public whenNotPaused returns (bool success) {
        return super.decreaseAllowance(spender, subtractedValue);
    }
}
/**
 * @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 private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor () internal {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }
    /**
     * @return the address of the owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(isOwner());
        _;
    }
    /**
     * @return true if `msg.sender` is the owner of the contract.
     */
    function isOwner() public view returns (bool) {
        return msg.sender == _owner;
    }
    /**
     * @dev Allows the current owner to relinquish control of the contract.
     * @notice Renouncing to ownership will leave the contract without an owner.
     * It will not be possible to call the functions with the `onlyOwner`
     * modifier anymore.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
    /**
     * @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 {
        _transferOwnership(newOwner);
    }
    /**
     * @dev Transfers control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0));
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
contract TroyToken is ERC20Detailed, ERC20, ERC20Burnable, ERC20Capped, ERC20Pausable {
    string private constant _TokenName = "TROY";
    string private constant _TokenSymbol = "GOLD";
    uint8 private constant _TokenDecimals = 18;
    uint256 private constant _maxSupply = 180000000; // 22600000
    uint256 private constant  _TokenCap = _maxSupply * (10 ** uint256(_TokenDecimals)); // Converting uint8 into uint256
    
    constructor () public
    ERC20Detailed ( _TokenName, _TokenSymbol, _TokenDecimals )
    ERC20Capped(_TokenCap)
    {
    }
    
}