EmpireBIT 1A Offering $50M in Equity

EXHIBIT 1A-14

SMART CONTRACTS

Security Token

pragma solidity 0.5.0;

	import "../utils/Pausable.sol";

	contract ISecurityToken is Pausable {
	// ERC-20

	uint256 public totalSupply;

	function balanceOf(address tokenHolder) public view returns (uint256);

	event Transfer(address indexed from, address indexed to, uint256 amount);

	// OKTO Security Token

	string public name;
	string public symbol;
	uint8 public decimals;
	address public whitelistAddress;
	address[] public operators;
	bool public released;

	// Modules handling
	function addModule(address moduleAddress) public;

	function removeModule(address moduleAddress) public;
	function release() public;

	// Operators handling
	function authorizeOperator(address operator) public;
	function revokeOperator(address operator) public;
	function isOperator(address operator) public view returns (bool);

	// Tokens handling
	function balanceOfByTranche(bytes32 tranche, address tokenHolder) public view returns (uint256);
	function getDestinationTranche(bytes32 sourceTranche, address from, uint256 amount, bytes memory data) public view returns(bytes32);
	function canTransfer(bytes32 tranche, address operator, address from, address to, uint256 amount, bytes memory data) public view returns (byte, string memory, bytes32);
	function transferByTranche(bytes32 tranche, address to, uint256 amount, bytes memory data) public returns (bytes32);
	function operatorTransferByTranche(bytes32 tranche, address from, address to, uint256 amount, bytes memory data) public returns (bytes32);
	function tranchesOf(address tokenHolder) public view returns (bytes32[] memory);
	function issueByTranche(bytes32 tranche, address tokenHolder, uint256 amount, bytes memory data) public;
	function burnByTranche(bytes32 tranche, address tokenHolder, uint256 amount, bytes memory data) public;

	// Events
	event AddedModule(address moduleAddress, string moduleType);
	event RemovedModule(address moduleAddress);
	event Released();
	event AuthorizedOperator(address indexed operator);
	event RevokedOperator(address indexed operator);
	event TransferByTranche(bytes32 fromTranche, bytes32 toTranche, address indexed operator, address indexed from, address indexed to, uint256 amount, bytes data);

	event IssuedByTranche(bytes32 tranche, address indexed operator, address indexed to, uint256 amount, bytes data);
	event BurnedByTranche(bytes32 tranche, address indexed operator, address indexed from, uint256 amount, bytes data);
	}

Custom Token Module

pragma solidity ^0.5.0;

	import "../tokens/TokenModule.sol";

	contract CustomTokenModule is TokenModule {
	string public description;

	constructor(address _tokenAddress)
	TokenModule(_tokenAddress, "custom")
	public
	{
	}
	}

Forced Transfer Module

pragma solidity ^0.5.0;

	import "../utils/Factory.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract ForcedTransferTokenModule is TransferValidatorTokenModule,TransferListenerTokenModule,TokenModule {
	struct ForcedTransfer {
	bytes32 fromTranche;
	bytes32 toTranche;
	address operator;
	address from;
	address to;
	uint256 amount;
	}

	mapping(bytes32 => ForcedTransfer) pendingForceTransfers;
	uint256 numberOfPendingTransfers;

	constructor(address _tokenAddress)
	TokenModule(_tokenAddress, "forcedTransfer")
	public
	{
	}

	function getFeatures()

	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](2);
	features[0] = Module.Feature.TransferValidator;
	features[1] = Module.Feature.TransferListener;
	return features;
	}

	function approveForcedTransfer(bytes32 fromTranche, bytes32 toTranche, address operator, address from, address to, uint256 amount)
	onlyTokenOwner
	public
	{
	require(from != address(0), "Invalid source address");
	require(to != address(0), "Invalid destination address");
	require(operator != address(0), "Invalid operator");
	require(amount >= 0, "Negative amount");

	bytes memory hashBytes = abi.encodePacked(fromTranche, toTranche, operator, from, to, amount);
	bytes32 hash = keccak256(hashBytes);
	if (pendingForceTransfers[hash].from == address(0)) {
	pendingForceTransfers[hash].fromTranche = fromTranche;
	pendingForceTransfers[hash].toTranche = toTranche;
	pendingForceTransfers[hash].operator = operator;
	pendingForceTransfers[hash].from = from;
	pendingForceTransfers[hash].to = to;
	pendingForceTransfers[hash].amount = amount;
	numberOfPendingTransfers++;
	emit ApprovedForcedTransfer(fromTranche, toTranche, operator, from, to, amount, hash);
	}

	}

	function revokeForcedTransfer(bytes32 fromTranche, bytes32 toTranche, address operator, address from, address to, uint256 amount)
	onlyTokenOwner
	public
	{
	require(from != address(0), "Invalid source address");
	require(to != address(0), "Invalid destination address");
	require(operator != address(0), "Invalid operator");
	require(amount >= 0, "Negative amount");

	bytes memory hashBytes = abi.encodePacked(fromTranche, toTranche, operator, from, to, amount);
	bytes32 hash = keccak256(hashBytes);
	if (pendingForceTransfers[hash].from != address(0)) {
	delete pendingForceTransfers[hash];
	numberOfPendingTransfers--;
	emit RevokedForcedTransfer(fromTranche, toTranche, operator, from, to, amount, hash);
	}
	}

	function validateTransfer(bytes32 fromTranche, bytes32 toTranche, address operator, address from, address to, uint256 amount, bytes memory)
	public view returns (byte, string memory)
	{
	if (numberOfPendingTransfers > 0) {
	bytes memory hashBytes = abi.encodePacked(fromTranche, toTranche, operator, from, to, amount);
	bytes32 hash = keccak256(hashBytes);
	ForcedTransfer storage forcedTransfer = pendingForceTransfers[hash];
	// we check one attribute to see if it exists

	if (forcedTransfer.from == from) {
	return (0xAF, "Forced transfer");
	}
	}
	// if it is not forced, we still returned approved
	return (0xA1, "Approved");
	}

	function transferDone(bytes32 fromTranche, bytes32 toTranche, address operator, address from, address to, uint256 amount, bytes memory)
	onlyToken
	public
	{
	if (numberOfPendingTransfers == 0) {
	// no need to check this
	return;
	}
	bytes memory hashBytes = abi.encodePacked(fromTranche, toTranche, operator, from, to, amount);
	bytes32 hash = keccak256(hashBytes);
	if (pendingForceTransfers[hash].from != address(0)) {
	emit ExecutedForcedTransfer(fromTranche, toTranche, operator, from, to, amount, hash);
	delete pendingForceTransfers[hash];
	numberOfPendingTransfers--;
	}
	}

	event ApprovedForcedTransfer(bytes32 fromTranche, bytes32 toTranche, address indexed operator, address indexed from, address to, uint256 amount, bytes32 hash);
	event RevokedForcedTransfer(bytes32 fromTranche, bytes32 toTranche, address indexed operator, address indexed from, address to, uint256 amount, bytes32 hash);
	event ExecutedForcedTransfer(bytes32 fromTranche, bytes32 toTranche, address indexed operator, address indexed from, address to, uint256 amount, bytes32 hash);

	}

	contract ForcedTransferTokenModuleFactory is Factory {
	function createInstance(address tokenAddress)
	public returns(address)
	{
	ForcedTransferTokenModule instance = new ForcedTransferTokenModule(tokenAddress);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

Investor Limite Module

pragma solidity ^0.5.0;

	import "../utils/SafeMath.sol";
	import "../utils/Factory.sol";
	import "../whitelists/IWhitelist.sol";
	import "../whitelists/WhitelistModule.sol";
	import "../tokens/ISecurityToken.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract InvestorsLimitTokenModule is TransferValidatorTokenModule,TransferListenerTokenModule,TokenModule,WhitelistModule {
	using SafeMath for uint256;

	bytes32 constant INVESTOR_ID_PROP = bytes32("investorId");

	uint256 public limit;
	bool public checkInvestorId;

	uint256 public numberOfInvestors;
	bytes32 investorIdProperty;
	mapping(bytes32 => uint256) balancePerInvestor;

	constructor(address _tokenAddress, address _whitelistAddress, uint256 _limit, bool _checkInvestorId)
	TokenModule(_tokenAddress, "investorsLimit")

	WhitelistModule(_whitelistAddress, "investorsLimit")
	public
	{
	require(_limit > 0, "Limit must be greater than zero");
	ISecurityToken token = ISecurityToken(tokenAddress);
	require(token.whitelistAddress() == _whitelistAddress, "Whitelist must be the same as the whitelist in the token");

	limit = _limit;
	checkInvestorId = _checkInvestorId;
	}

	function getFeatures()
	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](3);
	features[0] = Module.Feature.TransferValidator;
	features[1] = Module.Feature.TransferListener;
	features[2] = Module.Feature.WhitelistListener;
	return features;
	}

	function validateTransfer(bytes32, bytes32, address, address from, address to, uint256 amount, bytes memory)
	public view returns (byte, string memory)
	{
	ISecurityToken token = ISecurityToken(tokenAddress);
	uint256 diff;
	if (checkInvestorId) {
	// validate using balance per investor
	IWhitelist whitelist = IWhitelist(whitelistAddress);
	bytes32 fromInvestorId;

	bytes32 toInvestorId;
	if (from != address(0)) {
	fromInvestorId = whitelist.getProperty(from, INVESTOR_ID_PROP);
	}
	if (to != address(0)) {
	toInvestorId = whitelist.getProperty(to, INVESTOR_ID_PROP);
	}
	if (to != address(0) && balancePerInvestor[toInvestorId] == 0) {
	// if the sender is transferring all its tokens, then we can assume there will be one investor less
	diff = (from != address(0) && balancePerInvestor[fromInvestorId] == amount) ? 1 : 0;
	// this is a new investor so we need to check limit
	if ((numberOfInvestors - diff) >= limit) {
	return (0xA8, "Maximum number of investors reached");
	}
	}
	} else {
	if (to != address(0) && token.balanceOf(to) == 0) {
	// if the sender is transferring all its tokens, then we can assume there will be one investor less
	diff = (from != address(0) && token.balanceOf(from) == amount) ? 1 : 0;
	// this is a new investor so we need to check limit
	if ((numberOfInvestors - diff) >= limit) {
	return (0xA8, "Maximum number of investors reached");
	}
	}
	}
	return (0xA1, "Approved");
	}

	function transferDone(bytes32, bytes32, address, address from, address to, uint256 amount, bytes memory)

	onlyToken
	public
	{
	ISecurityToken token = ISecurityToken(tokenAddress);
	if (checkInvestorId) {
	// if there is a whitelist we should take into account balancer per investor instead of per wallet
	IWhitelist whitelist = IWhitelist(whitelistAddress);
	bytes32 fromInvestorId;
	bytes32 toInvestorId;
	if (from != address(0)) {
	fromInvestorId = whitelist.getProperty(from, INVESTOR_ID_PROP);
	balancePerInvestor[fromInvestorId] = balancePerInvestor[fromInvestorId].sub(amount);
	}
	if (to != address(0)) {
	toInvestorId = whitelist.getProperty(to, INVESTOR_ID_PROP);
	balancePerInvestor[toInvestorId] = balancePerInvestor[toInvestorId].add(amount);
	}
	if (to != address(0) && balancePerInvestor[toInvestorId] == amount) {
	// it means that this is a new investor as all the tokens are the ones that were transferred in this operation
	numberOfInvestors++;
	}
	if (from != address(0) && balancePerInvestor[fromInvestorId] == 0) {
	// decrease the number of investors as the sender does not have any tokens after the transaction
	numberOfInvestors--;
	}
	} else {
	if (to != address(0) && token.balanceOf(to) == amount) {
	// it means that this is a new investor as all the tokens are the ones that were transferred in this operation
	numberOfInvestors++;

	}
	if (from != address(0) && token.balanceOf(from) == 0) {
	// decrease the number of investors as the sender does not have any tokens after the transaction
	numberOfInvestors--;
	}
	}
	}

	function investorUpdated(address investor, bytes32 bucket, bytes32 newValue, bytes32 oldValue)
	onlyWhitelist
	public
	{
	if (bucket == INVESTOR_ID_PROP && newValue != oldValue) {
	ISecurityToken token = ISecurityToken(tokenAddress);
	uint256 balanceOfAddress = token.balanceOf(investor);
	// move balance of the address to the new investor
	balancePerInvestor[oldValue] = balancePerInvestor[oldValue].sub(balanceOfAddress);
	balancePerInvestor[newValue] = balancePerInvestor[newValue].add(balanceOfAddress);
	if (balancePerInvestor[newValue] == balanceOfAddress) {
	// it means that this is a new investor as all the tokens are the ones that were moved in this operation
	numberOfInvestors++;
	}
	if (balancePerInvestor[oldValue] == 0) {
	// decrease the number of investors as the old investor does not have any tokens after the operation
	numberOfInvestors--;
	}
	if (numberOfInvestors > limit) {
	revert("Maximum number of investors reached");

	}
	}
	}
	}

	contract InvestorsLimitTokenModuleFactory is Factory {
	function createInstance(address tokenAddress, uint256 limit, bool checkInvestorId)
	public returns(address)
	{
	ISecurityToken token = ISecurityToken(tokenAddress);
	address whitelistAddress = token.whitelistAddress();
	InvestorsLimitTokenModule instance = new InvestorsLimitTokenModule(tokenAddress, whitelistAddress, limit, checkInvestorId);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

KYC Accreditation Module

pragma solidity ^0.5.0;

	import "../whitelists/IWhitelist.sol";
	import "../utils/Factory.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract KycTokenModule is TransferValidatorTokenModule,TokenModule {
	address public whitelistAddress;

	bytes32 constant KYC_PROP = bytes32("kycStatus");

	constructor(address _tokenAddress)
	TokenModule(_tokenAddress, "kyc")
	public
	{
	ISecurityToken token = ISecurityToken(tokenAddress);

	whitelistAddress = token.whitelistAddress();

	}

	function getFeatures()
	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](1);

	features[0] = Module.Feature.TransferValidator;
	return features;
	}


	function validateTransfer(bytes32, bytes32, address, address, address to, uint256, bytes memory)
	public view returns (byte, string memory)
	{
	IWhitelist whitelist = IWhitelist(whitelistAddress);
	uint256 propValue = uint256(whitelist.getProperty(to, KYC_PROP));
	if (propValue == 1 \|\| propValue == 2) {
	return (0xA1, "Approved");
	} else {
	return (0xA6, "Receiver not in whitelist");
	}
	}
	}

	contract KycTokenModuleFactory is Factory {
	function createInstance(address tokenAddress)
	public returns(address)
	{
	KycTokenModule instance = new KycTokenModule(tokenAddress);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

Offering Module

pragma solidity ^0.5.0;

	import "../utils/Factory.sol";
	import "../utils/Pausable.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract OfferingTokenModule is TransferValidatorTokenModule,TokenModule,Pausable {
	uint256 public start;
	uint256 public end;

	constructor(address _tokenAddress, uint256 _start, uint256 _end)
	TokenModule(_tokenAddress, "offering")
	public
	{
	start = _start;
	end = _end;
	}

	function getFeatures()
	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](1);
	features[0] = Module.Feature.TransferValidator;
	return features;
	}


	function issueTokens(bytes32[] memory tranches, address[] memory investors, uint256[] memory amounts)
	onlyTokenOperator whenNotPaused
	public
	{
	require(investors.length == tranches.length && tranches.length == amounts.length, "Number of investors, tranches and amounts does not match");
	require(investors.length > 0, "Tokens for at least one investor should be issued");
	require(now >= start, "The offering has not started yet");
	require(now <= end, "The offering has finished already");
	byte res;
	string memory message;
	ISecurityToken token = ISecurityToken(tokenAddress);
	for (uint i = 0; i < investors.length; i++) {
	(res, message, ) = token.canTransfer(tranches[i], msg.sender, address(0), investors[i], amounts[i], abi.encodePacked("issuing"));
	if (res != 0xA0 && res != 0xA1 && res != 0xA2 && res != 0xAF) {
	emit TokenAllocationError(i, res, message);
	} else {
	token.issueByTranche(tranches[i], investors[i], amounts[i], abi.encodePacked("issuing"));
	}
	}
	}

	function reserveTokens(bytes32[] memory tranches, address[] memory investors, uint256[] memory amounts)
	onlyTokenOwner whenNotPaused
	public
	{
	require(investors.length == tranches.length && tranches.length == amounts.length, "Number of investors, tranches and amounts does not match");

	require(investors.length > 0, "Tokens for at least one investor should be issued");
	require(now < start, "The offering has started already");
	byte res;
	string memory message;
	ISecurityToken token = ISecurityToken(tokenAddress);
	for (uint i = 0; i < investors.length; i++) {
	(res, message, ) = token.canTransfer(tranches[i], msg.sender, address(0), investors[i], amounts[i], abi.encodePacked("reservation"));
	if (res != 0xA0 && res != 0xA1 && res != 0xA2 && res != 0xAF) {
	emit TokenAllocationError(i, res, message);
	} else {
	token.issueByTranche(tranches[i], investors[i], amounts[i], abi.encodePacked("reservation"));
	}
	}
	}

	function validateTransfer(bytes32, bytes32, address, address from, address, uint256, bytes memory data)
	public view returns (byte, string memory)
	{
	if (from == address(0)) {
	// if this is a token reservation (only done by the owner of the token) we don't perform this validation
	if (keccak256(data) != keccak256(abi.encodePacked("reservation"))) {
	// we need to only allow issuance if we are between start and end
	if (now < start \|\| now > end) {
	return (0xA8, "Offering not in progress");
	} else if (paused) {
	// if offering is in progress, but it is paused we will return an error
	return (0xA8, "Offering is paused");
	}

	} else {
	// if it is a reservation, but it is after the offering started, return an error
	if (now >= start) {
	return (0xA8, "Offering already started");
	}
	}
	} else {
	// if this is a regular transfer and not issuance, we will reject it if the offering is not finished
	if (now <= end) {
	return (0xA8, "Transfers are not allowed until offering is finished");
	}
	}
	return (0xA1, "Approved");
	}

	event TokenAllocationError(uint256 index, byte code, string errorMessage);
	}

	contract OfferingTokenModuleFactory is Factory {
	function createInstance(address tokenAddress, uint256 start, uint256 end)
	public returns(address)
	{
	OfferingTokenModule instance = new OfferingTokenModule(tokenAddress, start, end);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

Restrict Sender Module

pragma solidity ^0.5.0;

	import "../whitelists/Whitelist.sol";
	import "../utils/Factory.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract RestrictSenderTokenModule is TransferValidatorTokenModule,TokenModule {
	address public whitelistAddress;
	bool public allowOperators;
	bool public allowAts;

	bytes32 constant ATS_PROP = bytes32("ats");

	constructor(address _tokenAddress, bool _allowOperators, bool _allowAts)
	TokenModule(_tokenAddress, "restrictSender")
	public
	{
	require(_allowOperators \|\| _allowAts, "You need to allow at least one type of users");

	ISecurityToken token = ISecurityToken(tokenAddress);
	whitelistAddress = token.whitelistAddress();
	allowOperators = _allowOperators;
	allowAts = _allowAts;
	}

	function getFeatures()
	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](1);
	features[0] = Module.Feature.TransferValidator;
	return features;
	}


	function validateTransfer(bytes32, bytes32, address operator, address from, address, uint256, bytes memory)
	public view returns (byte, string memory)
	{
	IWhitelist whitelist = IWhitelist(whitelistAddress);
	if (
	allowOperators && operator != address(0) \|\|
	allowAts && operator == address(0) && whitelist.getProperty(from, ATS_PROP) == bytes32(uint256(1))
	) {
	return (0xA1, "Approved");
	} else {
	return (0xA5, "Sender is restricted");
	}
	}
	}

	contract RestrictSenderTokenModuleFactory is Factory {
	function createInstance(address tokenAddress, bool allowOperators, bool allowAts)
	public returns(address)
	{
	RestrictSenderTokenModule instance = new RestrictSenderTokenModule(tokenAddress, allowOperators, allowAts);

	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

Supply Limit Module

pragma solidity ^0.5.0;

	import "../utils/Factory.sol";
	import "../tokens/ISecurityToken.sol";
	import "../tokens/TokenModule.sol";
	import "./Module.sol";

	contract SupplyLimitTokenModule is TransferValidatorTokenModule,TokenModule {
	uint256 public limit;

	constructor(address _tokenAddress, uint256 _limit)
	TokenModule(_tokenAddress, "supplyLimit")
	public
	{
	limit = _limit;
	}

	function getFeatures()
	public view returns(Module.Feature[] memory)
	{
	Module.Feature[] memory features = new Module.Feature[](1);
	features[0] = Module.Feature.TransferValidator;
	return features;
	}

	function validateTransfer(bytes32, bytes32, address, address from, address, uint256 amount, bytes memory)
	public view returns (byte, string memory)
	{
	if (from == address(0)) {
	// this is an issuance of tokens
	ISecurityToken token = ISecurityToken(tokenAddress);
	if ((token.totalSupply() + amount) > limit) {
	return (0xA8, "Supply limit reached");
	}
	}
	return (0xA1, "Approved");
	}
	}

	contract SupplyLimitTokenModuleFactory is Factory {
	function createInstance(address tokenAddress, uint256 limit)
	public returns(address)
	{
	SupplyLimitTokenModule instance = new SupplyLimitTokenModule(tokenAddress, limit);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

Multi-Signature Wallet

pragma solidity ^0.5.0;

	import "../utils/Factory.sol";


	// This multisig wallet was develop by Gnosis: https://github.com/gnosis/MultiSigWallet

	/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution.
	/// @author Stefan George - <stefan.george@consensys.net>
	contract MultiSigWallet {

	/*
	* Events
	*/
	event Confirmation(address indexed sender, uint indexed transactionId);
	event Revocation(address indexed sender, uint indexed transactionId);
	event Submission(uint indexed transactionId);
	event Execution(uint indexed transactionId);
	event ExecutionFailure(uint indexed transactionId);
	event Deposit(address indexed sender, uint value);
	event OwnerAddition(address indexed owner);
	event OwnerRemoval(address indexed owner);
	event RequirementChange(uint required);

	/*

	* Constants
	*/
	uint constant public MAX_OWNER_COUNT = 50;

	/*
	* Storage
	*/
	mapping (uint => Transaction) public transactions;
	mapping (uint => mapping (address => bool)) public confirmations;
	mapping (address => bool) public isOwner;
	address[] public owners;
	uint public required;
	uint public transactionCount;

	struct Transaction {
	address destination;
	uint value;
	bytes data;
	bool executed;
	}

	/*
	* Modifiers
	*/
	modifier onlyWallet() {
	require(msg.sender == address(this));
	_;
	}

	modifier ownerDoesNotExist(address owner) {

	require(!isOwner[owner]);
	_;
	}

	modifier ownerExists(address owner) {
	require(isOwner[owner]);
	_;
	}

	modifier transactionExists(uint transactionId) {
	require(transactions[transactionId].destination != address(0));
	_;
	}

	modifier confirmed(uint transactionId, address owner) {
	require(confirmations[transactionId][owner]);
	_;
	}

	modifier notConfirmed(uint transactionId, address owner) {
	require(!confirmations[transactionId][owner]);
	_;
	}

	modifier notExecuted(uint transactionId) {
	require(!transactions[transactionId].executed);
	_;
	}

	modifier notNull(address _address) {
	require(_address != address(0));
	_;
	}

	modifier validRequirement(uint ownerCount, uint _required) {
	require(ownerCount <= MAX_OWNER_COUNT
	&& _required <= ownerCount
	&& _required != 0
	&& ownerCount != 0);
	_;
	}

	/// @dev Fallback function allows to deposit ether.
	function()
	external payable
	{
	if (msg.value > 0)
	emit Deposit(msg.sender, msg.value);
	}

	/*
	* Public functions
	*/
	/// @dev Contract constructor sets initial owners and required number of confirmations.
	/// @param _owners List of initial owners.
	/// @param _required Number of required confirmations.
	constructor(address[] memory _owners, uint _required)
	public
	validRequirement(_owners.length, _required)

	{
	for (uint i=0; i<_owners.length; i++) {
	require(!isOwner[_owners[i]] && _owners[i] != address(0));
	isOwner[_owners[i]] = true;
	}
	owners = _owners;
	required = _required;
	}

	/// @dev Allows to add a new owner. Transaction has to be sent by wallet.
	/// @param owner Address of new owner.
	function addOwner(address owner)
	public
	onlyWallet
	ownerDoesNotExist(owner)
	notNull(owner)
	validRequirement(owners.length + 1, required)
	{
	isOwner[owner] = true;
	owners.push(owner);
	emit OwnerAddition(owner);
	}

	/// @dev Allows to remove an owner. Transaction has to be sent by wallet.
	/// @param owner Address of owner.
	function removeOwner(address owner)
	public
	onlyWallet
	ownerExists(owner)
	{
	isOwner[owner] = false;

	for (uint i=0; i<owners.length - 1; i++)
	if (owners[i] == owner) {
	owners[i] = owners[owners.length - 1];
	break;
	}
	owners.length -= 1;
	if (required > owners.length)
	changeRequirement(owners.length);
	emit OwnerRemoval(owner);
	}

	/// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet.
	/// @param owner Address of owner to be replaced.
	/// @param newOwner Address of new owner.
	function replaceOwner(address owner, address newOwner)
	public
	onlyWallet
	ownerExists(owner)
	ownerDoesNotExist(newOwner)
	{
	for (uint i=0; i<owners.length; i++)
	if (owners[i] == owner) {
	owners[i] = newOwner;
	break;
	}
	isOwner[owner] = false;
	isOwner[newOwner] = true;
	emit OwnerRemoval(owner);
	emit OwnerAddition(newOwner);
	}


	/// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.
	/// @param _required Number of required confirmations.
	function changeRequirement(uint _required)
	public
	onlyWallet
	validRequirement(owners.length, _required)
	{
	required = _required;
	emit RequirementChange(_required);
	}

	/// @dev Allows an owner to submit and confirm a transaction.
	/// @param destination Transaction target address.
	/// @param value Transaction ether value.
	/// @param data Transaction data payload.
	/// @return Returns transaction ID.
	function submitTransaction(address destination, uint value, bytes memory data)
	public
	returns (uint transactionId)
	{
	transactionId = addTransaction(destination, value, data);
	confirmTransaction(transactionId);
	}

	/// @dev Allows an owner to confirm a transaction.
	/// @param transactionId Transaction ID.
	function confirmTransaction(uint transactionId)
	public
	ownerExists(msg.sender)

	transactionExists(transactionId)
	notConfirmed(transactionId, msg.sender)
	{
	confirmations[transactionId][msg.sender] = true;
	emit Confirmation(msg.sender, transactionId);
	executeTransaction(transactionId);
	}

	/// @dev Allows an owner to revoke a confirmation for a transaction.
	/// @param transactionId Transaction ID.
	function revokeConfirmation(uint transactionId)
	public
	ownerExists(msg.sender)
	confirmed(transactionId, msg.sender)
	notExecuted(transactionId)
	{
	confirmations[transactionId][msg.sender] = false;
	emit Revocation(msg.sender, transactionId);
	}

	/// @dev Allows anyone to execute a confirmed transaction.
	/// @param transactionId Transaction ID.
	function executeTransaction(uint transactionId)
	public
	ownerExists(msg.sender)
	confirmed(transactionId, msg.sender)
	notExecuted(transactionId)
	{
	if (isConfirmed(transactionId)) {
	Transaction storage txn = transactions[transactionId];
	txn.executed = true;

	if (external_call(txn.destination, txn.value, txn.data.length, txn.data))
	emit Execution(transactionId);
	else {
	emit ExecutionFailure(transactionId);
	txn.executed = false;
	}
	}
	}

	// call has been separated into its own function in order to take advantage
	// of the Solidity's code generator to produce a loop that copies tx.data into memory.
	function external_call(address destination, uint value, uint dataLength, bytes memory data) private returns (bool) {
	bool result;
	assembly {
	let x := mload(0x40) // "Allocate" memory for output (0x40 is where "free memory" pointer is stored by convention)
	let d := add(data, 32) // First 32 bytes are the padded length of data, so exclude that
	result := call(
	sub(gas, 34710), // 34710 is the value that solidity is currently emitting
	// It includes callGas (700) + callVeryLow (3, to pay for SUB) + callValueTransferGas (9000) +
	// callNewAccountGas (25000, in case the destination address does not exist and needs creating)
	destination,
	value,
	d,
	dataLength, // Size of the input (in bytes) - this is what fixes the padding problem
	x,
	0 // Output is ignored, therefore the output size is zero

	)
	}
	return result;
	}

	/// @dev Returns the confirmation status of a transaction.
	/// @param transactionId Transaction ID.
	/// @return Confirmation status.
	function isConfirmed(uint transactionId)
	public
	view
	returns (bool)
	{
	uint count = 0;
	for (uint i=0; i<owners.length; i++) {
	if (confirmations[transactionId][owners[i]])
	count += 1;
	if (count == required)
	return true;
	}
	}

	/*
	* Internal functions
	*/
	/// @dev Adds a new transaction to the transaction mapping, if transaction does not exist yet.
	/// @param destination Transaction target address.
	/// @param value Transaction ether value.
	/// @param data Transaction data payload.
	/// @return Returns transaction ID.

	function addTransaction(address destination, uint value, bytes memory data)
	internal
	notNull(destination)
	returns (uint transactionId)
	{
	transactionId = transactionCount;
	transactions[transactionId] = Transaction({
	destination: destination,
	value: value,
	data: data,
	executed: false
	});
	transactionCount += 1;
	emit Submission(transactionId);
	}

	/*
	* Web3 call functions
	*/
	/// @dev Returns number of confirmations of a transaction.
	/// @param transactionId Transaction ID.
	/// @return Number of confirmations.
	function getConfirmationCount(uint transactionId)
	public
	view
	returns (uint count)
	{
	for (uint i=0; i<owners.length; i++)
	if (confirmations[transactionId][owners[i]])
	count += 1;
	}


	/// @dev Returns total number of transactions after filers are applied.
	/// @param pending Include pending transactions.
	/// @param executed Include executed transactions.
	/// @return Total number of transactions after filters are applied.
	function getTransactionCount(bool pending, bool executed)
	public
	view
	returns (uint count)
	{
	for (uint i=0; i<transactionCount; i++)
	if ( pending && !transactions[i].executed
	\|\| executed && transactions[i].executed)
	count += 1;
	}

	/// @dev Returns list of owners.
	/// @return List of owner addresses.
	function getOwners()
	public
	view
	returns (address[] memory)
	{
	return owners;
	}

	/// @dev Returns array with owner addresses, which confirmed transaction.
	/// @param transactionId Transaction ID.
	/// @return Returns array of owner addresses.
	function getConfirmations(uint transactionId)
	public

	view
	returns (address[] memory _confirmations)
	{
	address[] memory confirmationsTemp = new address[](owners.length);
	uint count = 0;
	uint i;
	for (i=0; i<owners.length; i++)
	if (confirmations[transactionId][owners[i]]) {
	confirmationsTemp[count] = owners[i];
	count += 1;
	}
	_confirmations = new address[](count);
	for (i=0; i<count; i++)
	_confirmations[i] = confirmationsTemp[i];
	}

	/// @dev Returns list of transaction IDs in defined range.
	/// @param from Index start position of transaction array.
	/// @param to Index end position of transaction array.
	/// @param pending Include pending transactions.
	/// @param executed Include executed transactions.
	/// @return Returns array of transaction IDs.
	function getTransactionIds(uint from, uint to, bool pending, bool executed)
	public
	view
	returns (uint[] memory _transactionIds)
	{
	uint[] memory transactionIdsTemp = new uint[](transactionCount);
	uint count = 0;
	uint i;
	for (i=0; i<transactionCount; i++)

	if ( pending && !transactions[i].executed
	\|\| executed && transactions[i].executed)
	{
	transactionIdsTemp[count] = i;
	count += 1;
	}
	_transactionIds = new uint[](to - from);
	for (i=from; i<to; i++)
	_transactionIds[i - from] = transactionIdsTemp[i];
	}
	}

	contract MultiSigWalletFactory is Factory {
	function createInstance(address[] memory _owners, uint _required)
	public returns(address)
	{
	MultiSigWallet instance = new MultiSigWallet(_owners, _required);
	addInstance(address(instance));
	return address(instance);
	}
	}

Whitelist

pragma solidity ^0.5.0;

	import "../utils/Ownable.sol";
	import "../utils/Factory.sol";
	import "../utils/AddressArrayLib.sol";
	import "./WhitelistModule.sol";

	contract IWhitelist is Ownable {
	address[] public validators;

	function addValidator(address validator) public;
	function removeValidator(address validator) public;
	function isValidator(address validator) public view returns(bool);
	function setBucket(address investor, bytes32 bucket, bytes32 value) public;
	function setManyBuckets(address[] memory investors, bytes32[] memory buckets, bytes32[] memory values) public;
	function getBucket(address investor, bytes32 bucket) public view returns(bytes32);
	function getProperty(address investor, bytes32 property) public view returns(bytes32);
	function addProperty(bytes32 code, bytes32 bucket, uint8 from, uint16 len) public;
	function addModule(address moduleAddress) public;
	function removeModule(address moduleAddress) public;
	function isModule(address moduleAddress) public view returns (bool);

	event AddedValidator(address validator);
	event RemovedValidator(address validator);
	event AddedProperty(bytes32 code, bytes32 bucket, uint8 from, uint16 len);

	event AddedModule(address moduleAddress, string moduleType);
	event RemovedModule(address moduleAddress);
	event UpdatedInvestor(address investor, bytes32 bucket, bytes32 value);
	}

Standard Whitelist

pragma solidity ^0.5.0;

	import "../utils/Ownable.sol";
	import "../utils/Factory.sol";
	import "./Whitelist.sol";

	///////////////////////////////////////////////////////////////////////////////////////////////////
	// Standard properties:
	//
	// General Bucket ----------------------------------------------
	// KYC status index 0, length 2 bits (00: pending, 01: auto-approved, 10: manually-approved, 11: disapproved)
	// KYC status updated index 2, length 40 bits
	// AML status index 42, length 2 bits (00: pending, 01: auto-approved, 10: manually-approved, 11: disapproved)
	// AML status updated index 44, length 40 bits
	// Accredited status index 84, length 3 bits (000: pending, 001: auto-approved, 010: manually-approved, 011: self-approved, 100: disapproved)
	// Accredited status updated index 87, length 40 bits
	// Country code (two letters code) index 127, length 16 bits (two letters ascii code lower case)
	// Insider index 143, length 1 bits
	// Lockup expiration index 144, length 40 bits
	// ATS index 184, length 1 bits
	// Blocked index 185, length 1 bits
	// Investor ID Bucket ------------------------------------------
	// Investor ID index 0, length 256 bits
	// KYC Reference Bucket ----------------------------------------
	// KYC Reference index 0, length 256 bits

	// AML Reference Bucket ----------------------------------------
	// AML Reference index 0, length 256 bits
	// Accredited Reference Bucket ---------------------------------
	// Accredited Reference index 0, length 256 bits
	//
	///////////////////////////////////////////////////////////////////////////////////////////////////

	contract StandardWhitelist is Whitelist {
	constructor(address[] memory validators, bytes32[] memory codes, bytes32[] memory buckets, uint8[] memory froms, uint16[] memory lens)
	Whitelist(validators, codes, buckets, froms, lens)
	public
	{
	// define this standard properties; if they were also passed in the constructor
	// they will be overridden

	propertiesDefinition[bytes32("kycStatus")].code = bytes32("kycStatus");
	propertiesDefinition[bytes32("kycStatus")].bucket = bytes32("general");
	propertiesDefinition[bytes32("kycStatus")].from = 0;
	propertiesDefinition[bytes32("kycStatus")].len = 2;

	propertiesDefinition[bytes32("kycStatusUpdated")].code = bytes32("kycStatusUpdated");
	propertiesDefinition[bytes32("kycStatusUpdated")].bucket = bytes32("general");
	propertiesDefinition[bytes32("kycStatusUpdated")].from = 2;
	propertiesDefinition[bytes32("kycStatusUpdated")].len = 40;

	propertiesDefinition[bytes32("amlStatus")].code = bytes32("amlStatus");
	propertiesDefinition[bytes32("amlStatus")].bucket = bytes32("general");
	propertiesDefinition[bytes32("amlStatus")].from = 42;

	propertiesDefinition[bytes32("amlStatus")].len = 2;

	propertiesDefinition[bytes32("amlStatusUpdated")].code = bytes32("amlStatusUpdated");
	propertiesDefinition[bytes32("amlStatusUpdated")].bucket = bytes32("general");
	propertiesDefinition[bytes32("amlStatusUpdated")].from = 44;
	propertiesDefinition[bytes32("amlStatusUpdated")].len = 40;

	propertiesDefinition[bytes32("accreditedStatus")].code = bytes32("accreditedStatus");
	propertiesDefinition[bytes32("accreditedStatus")].bucket = bytes32("general");
	propertiesDefinition[bytes32("accreditedStatus")].from = 84;
	propertiesDefinition[bytes32("accreditedStatus")].len = 3;

	propertiesDefinition[bytes32("accreditedStatusUpdated")].code = bytes32("accreditedStatusUpdated");
	propertiesDefinition[bytes32("accreditedStatusUpdated")].bucket = bytes32("general");
	propertiesDefinition[bytes32("accreditedStatusUpdated")].from = 87;
	propertiesDefinition[bytes32("accreditedStatusUpdated")].len = 40;

	propertiesDefinition[bytes32("country")].code = bytes32("country");
	propertiesDefinition[bytes32("country")].bucket = bytes32("general");
	propertiesDefinition[bytes32("country")].from = 127;
	propertiesDefinition[bytes32("country")].len = 16;

	propertiesDefinition[bytes32("insider")].code = bytes32("insider");
	propertiesDefinition[bytes32("insider")].bucket = bytes32("general");
	propertiesDefinition[bytes32("insider")].from = 143;
	propertiesDefinition[bytes32("insider")].len = 1;


	propertiesDefinition[bytes32("lockupExpiration")].code = bytes32("lockupExpiration");
	propertiesDefinition[bytes32("lockupExpiration")].bucket = bytes32("general");
	propertiesDefinition[bytes32("lockupExpiration")].from = 144;
	propertiesDefinition[bytes32("lockupExpiration")].len = 40;

	propertiesDefinition[bytes32("ats")].code = bytes32("ats");
	propertiesDefinition[bytes32("ats")].bucket = bytes32("general");
	propertiesDefinition[bytes32("ats")].from = 184;
	propertiesDefinition[bytes32("ats")].len = 1;

	propertiesDefinition[bytes32("blocked")].code = bytes32("blocked");
	propertiesDefinition[bytes32("blocked")].bucket = bytes32("general");
	propertiesDefinition[bytes32("blocked")].from = 185;
	propertiesDefinition[bytes32("blocked")].len = 1;

	propertiesDefinition[bytes32("investorId")].code = bytes32("investorId");
	propertiesDefinition[bytes32("investorId")].bucket = bytes32("investorId");
	propertiesDefinition[bytes32("investorId")].from = 0;
	�� propertiesDefinition[bytes32("investorId")].len = 256;

	propertiesDefinition[bytes32("kycReference")].code = bytes32("kycReference");
	propertiesDefinition[bytes32("kycReference")].bucket = bytes32("kycReference");
	propertiesDefinition[bytes32("kycReference")].from = 0;
	propertiesDefinition[bytes32("kycReference")].len = 256;

	propertiesDefinition[bytes32("amlReference")].code = bytes32("amlReference");

	propertiesDefinition[bytes32("amlReference")].bucket = bytes32("amlReference");
	propertiesDefinition[bytes32("amlReference")].from = 0;
	propertiesDefinition[bytes32("amlReference")].len = 256;

	propertiesDefinition[bytes32("accreditedReference")].code = bytes32("accreditedReference");
	propertiesDefinition[bytes32("accreditedReference")].bucket = bytes32("accreditedReference");
	propertiesDefinition[bytes32("accreditedReference")].from = 0;
	propertiesDefinition[bytes32("accreditedReference")].len = 256;
	}
	}

	contract StandardWhitelistFactory is Factory {
	function createInstance(address[] memory validators, bytes32[] memory codes, bytes32[] memory buckets, uint8[] memory froms, uint16[] memory lens)
	public returns(address)
	{
	StandardWhitelist instance = new StandardWhitelist(validators, codes, buckets, froms, lens);
	instance.transferOwnership(msg.sender);
	addInstance(address(instance));
	return address(instance);
	}
	}

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