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Overview
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0x7593927e26f572ca5df54cfce1582558f5c90be32381d4c56c880965019c2d7c | Transfer | (pending) | 2 days ago | IN | 0 ETH | (Pending) | |||
0xe661b506dbf2023d21ab30a03cdee1ab233ced0db7b99b2a95b5785fb7ab2ce4 | Approve | (pending) | 9 days ago | IN | 0 ETH | (Pending) | |||
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Contract Name:
SelfKeyToken
Compiler Version
v0.4.19+commit.c4cbbb05
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity)Audit Report
/** *Submitted for verification at Etherscan.io on 2018-03-06 */ pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @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 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 CrowdsaleConfig * @dev Holds all constants for SelfKeyCrowdsale contract */ contract CrowdsaleConfig { uint256 public constant TOKEN_DECIMALS = 18; uint256 public constant MIN_TOKEN_UNIT = 10 ** uint256(TOKEN_DECIMALS); // Initial distribution amounts uint256 public constant TOTAL_SUPPLY_CAP = 6000000000 * MIN_TOKEN_UNIT; // 33% of the total supply cap uint256 public constant SALE_CAP = 1980000000 * MIN_TOKEN_UNIT; // Minimum cap per purchaser on public sale = $100 in KEY (at $0.015) uint256 public constant PURCHASER_MIN_TOKEN_CAP = 6666 * MIN_TOKEN_UNIT; // Maximum cap per purchaser on first day of public sale = $3,000 in KEY (at $0.015) uint256 public constant PURCHASER_MAX_TOKEN_CAP_DAY1 = 200000 * MIN_TOKEN_UNIT; // Maximum cap per purchaser on public sale = $18,000 in KEY (at $0.015) uint256 public constant PURCHASER_MAX_TOKEN_CAP = 1200000 * MIN_TOKEN_UNIT; // 16.5% uint256 public constant FOUNDATION_POOL_TOKENS = 876666666 * MIN_TOKEN_UNIT; uint256 public constant FOUNDATION_POOL_TOKENS_VESTED = 113333334 * MIN_TOKEN_UNIT; // Approx 33% uint256 public constant COMMUNITY_POOL_TOKENS = 1980000000 * MIN_TOKEN_UNIT; // Founders' distribution. Total = 16.5% uint256 public constant FOUNDERS_TOKENS = 330000000 * MIN_TOKEN_UNIT; uint256 public constant FOUNDERS_TOKENS_VESTED_1 = 330000000 * MIN_TOKEN_UNIT; uint256 public constant FOUNDERS_TOKENS_VESTED_2 = 330000000 * MIN_TOKEN_UNIT; // 1% for legal advisors uint256 public constant LEGAL_EXPENSES_1_TOKENS = 54000000 * MIN_TOKEN_UNIT; uint256 public constant LEGAL_EXPENSES_2_TOKENS = 6000000 * MIN_TOKEN_UNIT; // KEY price in USD (thousandths) uint256 public constant TOKEN_PRICE_THOUSANDTH = 15; // $0.015 per KEY // Contract wallet addresses for initial allocation address public constant CROWDSALE_WALLET_ADDR = 0xE0831b1687c9faD3447a517F9371E66672505dB0; address public constant FOUNDATION_POOL_ADDR = 0xD68947892Ef4D94Cdef7165b109Cf6Cd3f58A8e8; address public constant FOUNDATION_POOL_ADDR_VEST = 0xd0C24Bb82e71A44eA770e84A3c79979F9233308D; address public constant COMMUNITY_POOL_ADDR = 0x0506c5485AE54aB14C598Ef16C459409E5d8Fc03; address public constant FOUNDERS_POOL_ADDR = 0x4452d6454e777743a5Ee233fbe873055008fF528; address public constant LEGAL_EXPENSES_ADDR_1 = 0xb57911380F13A0a9a6Ba6562248674B5f56D7BFE; address public constant LEGAL_EXPENSES_ADDR_2 = 0x9be281CdcF34B3A01468Ad1008139410Ba5BB2fB; // 6 months period, in seconds, for pre-commitment half-vesting uint64 public constant PRECOMMITMENT_VESTING_SECONDS = 15552000; } /** * @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; } } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) 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); 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 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; } } /** * @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; } } /* solhint-disable not-rely-on-time */ /** * @title SelfKeyToken * @dev SelfKey Token implementation. */ contract SelfKeyToken is MintableToken { string public constant name = 'SelfKey'; //solhint-disable-line const-name-snakecase string public constant symbol = 'KEY'; //solhint-disable-line const-name-snakecase uint256 public constant decimals = 18; //solhint-disable-line const-name-snakecase uint256 public cap; bool private transfersEnabled = false; event Burned(address indexed burner, uint256 value); /** * @dev Only the contract owner can transfer without restrictions. * Regular holders need to wait until sale is finalized. * @param _sender — The address sending the tokens * @param _value — The number of tokens to send */ modifier canTransfer(address _sender, uint256 _value) { require(transfersEnabled || _sender == owner); _; } /** * @dev Constructor that sets a maximum supply cap. * @param _cap — The maximum supply cap. */ function SelfKeyToken(uint256 _cap) public { cap = _cap; } /** * @dev Overrides MintableToken.mint() for restricting supply under cap * @param _to — The address to receive minted tokens * @param _value — The number of tokens to mint */ function mint(address _to, uint256 _value) public onlyOwner canMint returns (bool) { require(totalSupply.add(_value) <= cap); return super.mint(_to, _value); } /** * @dev Checks modifier and allows transfer if tokens are not locked. * @param _to — The address to receive tokens * @param _value — The number of tokens to send */ function transfer(address _to, uint256 _value) public canTransfer(msg.sender, _value) returns (bool) { return super.transfer(_to, _value); } /** * @dev Checks modifier and allows transfer if tokens are not locked. * @param _from — The address to send tokens from * @param _to — The address to receive tokens * @param _value — The number of tokens to send */ function transferFrom(address _from, address _to, uint256 _value) public canTransfer(_from, _value) returns (bool) { return super.transferFrom(_from, _to, _value); } /** * @dev Enables token transfers. * Called when the token sale is successfully finalized */ function enableTransfers() public onlyOwner { transfersEnabled = true; } /** * @dev Burns a specific number of tokens. * @param _value — The number of tokens to be burned. */ function burn(uint256 _value) public onlyOwner { require(_value > 0); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); Burned(burner, _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 { require(_releaseTime > now); token = _token; beneficiary = _beneficiary; releaseTime = _releaseTime; } /** * @notice Transfers tokens held by timelock to beneficiary. */ function release() public { require(now >= releaseTime); uint256 amount = token.balanceOf(this); require(amount > 0); token.safeTransfer(beneficiary, amount); } } /** * @title RefundVault * @dev This contract is used for storing funds while a crowdsale * is in progress. Supports refunding the money if crowdsale fails, * and forwarding it if crowdsale is successful. */ contract RefundVault is Ownable { using SafeMath for uint256; enum State { Active, Refunding, Closed } mapping (address => uint256) public deposited; address public wallet; State public state; event Closed(); event RefundsEnabled(); event Refunded(address indexed beneficiary, uint256 weiAmount); function RefundVault(address _wallet) public { require(_wallet != address(0)); wallet = _wallet; state = State.Active; } function deposit(address investor) onlyOwner public payable { require(state == State.Active); deposited[investor] = deposited[investor].add(msg.value); } function close() onlyOwner public { require(state == State.Active); state = State.Closed; Closed(); wallet.transfer(this.balance); } function enableRefunds() onlyOwner public { require(state == State.Active); state = State.Refunding; RefundsEnabled(); } function refund(address investor) public { require(state == State.Refunding); uint256 depositedValue = deposited[investor]; deposited[investor] = 0; investor.transfer(depositedValue); Refunded(investor, depositedValue); } } /** * @title SelfKeyCrowdsale * @dev SelfKey Token Crowdsale implementation. */ // solhint-disable-next-line max-states-count contract SelfKeyCrowdsale is Ownable, CrowdsaleConfig { using SafeMath for uint256; using SafeERC20 for SelfKeyToken; // whitelist of addresses that can perform precommitments and KYC verifications mapping(address => bool) public isVerifier; // Token contract SelfKeyToken public token; uint64 public startTime; uint64 public endTime; // Minimum tokens expected to sell uint256 public goal; // How many tokens a buyer gets per ETH uint256 public rate = 51800; // ETH price in USD, can be later updated until start date uint256 public ethPrice = 777; // Total amount of tokens purchased, including pre-sale uint256 public totalPurchased = 0; mapping(address => bool) public kycVerified; mapping(address => uint256) public tokensPurchased; // a mapping of dynamically instantiated token timelocks for each pre-commitment beneficiary mapping(address => address) public vestedTokens; bool public isFinalized = false; // Token Timelocks TokenTimelock public foundersTimelock1; TokenTimelock public foundersTimelock2; TokenTimelock public foundationTimelock; // Vault to hold funds until crowdsale is finalized. Allows refunding if crowdsale is not successful. RefundVault public vault; // Crowdsale events event TokenPurchase( address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount ); event VerifiedKYC(address indexed participant); event AddedPrecommitment( address indexed participant, uint256 tokensAllocated ); event Finalized(); modifier verifierOnly() { require(isVerifier[msg.sender]); _; } /** * @dev Crowdsale contract constructor * @param _startTime — Unix timestamp representing the crowdsale start time * @param _endTime — Unix timestamp representing the crowdsale start time * @param _goal — Minimum amount of tokens expected to sell. */ function SelfKeyCrowdsale( uint64 _startTime, uint64 _endTime, uint256 _goal ) public { require(_endTime > _startTime); // sets contract owner as a verifier isVerifier[msg.sender] = true; token = new SelfKeyToken(TOTAL_SUPPLY_CAP); // mints all possible tokens to the crowdsale contract token.mint(address(this), TOTAL_SUPPLY_CAP); token.finishMinting(); startTime = _startTime; endTime = _endTime; goal = _goal; vault = new RefundVault(CROWDSALE_WALLET_ADDR); // Set timelocks to 6 months and a year after startTime, respectively uint64 sixMonthLock = uint64(startTime + 15552000); uint64 yearLock = uint64(startTime + 31104000); // Instantiation of token timelocks foundersTimelock1 = new TokenTimelock(token, FOUNDERS_POOL_ADDR, sixMonthLock); foundersTimelock2 = new TokenTimelock(token, FOUNDERS_POOL_ADDR, yearLock); foundationTimelock = new TokenTimelock(token, FOUNDATION_POOL_ADDR_VEST, yearLock); // Genesis allocation of tokens token.safeTransfer(FOUNDATION_POOL_ADDR, FOUNDATION_POOL_TOKENS); token.safeTransfer(COMMUNITY_POOL_ADDR, COMMUNITY_POOL_TOKENS); token.safeTransfer(FOUNDERS_POOL_ADDR, FOUNDERS_TOKENS); token.safeTransfer(LEGAL_EXPENSES_ADDR_1, LEGAL_EXPENSES_1_TOKENS); token.safeTransfer(LEGAL_EXPENSES_ADDR_2, LEGAL_EXPENSES_2_TOKENS); // Allocation of vested tokens token.safeTransfer(foundersTimelock1, FOUNDERS_TOKENS_VESTED_1); token.safeTransfer(foundersTimelock2, FOUNDERS_TOKENS_VESTED_2); token.safeTransfer(foundationTimelock, FOUNDATION_POOL_TOKENS_VESTED); } /** * @dev Fallback function is used to buy tokens. * It's the only entry point since `buyTokens` is internal */ function () public payable { buyTokens(msg.sender); } /** * @dev Adds an address to the whitelist of Verifiers * @param _address - address of the verifier */ function addVerifier (address _address) public onlyOwner { isVerifier[_address] = true; } /** * @dev Removes an address from the whitelist of Verifiers * @param _address - address of the verifier to be removed */ function removeVerifier (address _address) public onlyOwner { isVerifier[_address] = false; } /** * @dev Sets a new start date as long as token hasn't started yet * @param _startTime - unix timestamp of the new start time */ function setStartTime (uint64 _startTime) public onlyOwner { require(now < startTime); require(_startTime > now); require(_startTime < endTime); startTime = _startTime; } /** * @dev Sets a new end date as long as end date hasn't been reached * @param _endTime - unix timestamp of the new end time */ function setEndTime (uint64 _endTime) public onlyOwner { require(now < endTime); require(_endTime > now); require(_endTime > startTime); endTime = _endTime; } /** * @dev Updates the ETH/USD conversion rate as long as the public sale hasn't started * @param _ethPrice - Updated conversion rate */ function setEthPrice(uint256 _ethPrice) public onlyOwner { require(now < startTime); require(_ethPrice > 0); ethPrice = _ethPrice; rate = ethPrice.mul(1000).div(TOKEN_PRICE_THOUSANDTH); } /** * @dev Must be called after crowdsale ends, to do some extra finalization * work. Calls the contract's finalization function. */ function finalize() public onlyOwner { require(now > startTime); require(!isFinalized); finalization(); Finalized(); isFinalized = true; } /** * @dev If crowdsale is unsuccessful, a refund can be claimed back */ function claimRefund(address participant) public { // requires sale to be finalized and goal not reached, require(isFinalized); require(!goalReached()); vault.refund(participant); } /** * @dev If crowdsale is unsuccessful, participants can claim refunds */ function goalReached() public constant returns (bool) { return totalPurchased >= goal; } /** * @dev Release time-locked tokens */ function releaseLockFounders1() public { foundersTimelock1.release(); } function releaseLockFounders2() public { foundersTimelock2.release(); } function releaseLockFoundation() public { foundationTimelock.release(); } /** * @dev Release time-locked tokens for any vested address */ function releaseLock(address participant) public { require(vestedTokens[participant] != 0x0); TokenTimelock timelock = TokenTimelock(vestedTokens[participant]); timelock.release(); } /** * @dev Verifies KYC for given participant. * This enables token purchases by the participant addres */ function verifyKYC(address participant) public verifierOnly { kycVerified[participant] = true; VerifiedKYC(participant); } /** * @dev Adds an address for pre-sale commitments made off-chain. * @param beneficiary — Address of the already verified participant * @param tokensAllocated — Exact amount of KEY tokens (including decimal places) to allocate * @param halfVesting — determines whether the half the tokens will be time-locked or not */ function addPrecommitment( address beneficiary, uint256 tokensAllocated, bool halfVesting ) public verifierOnly { // requires to be on pre-sale require(now < startTime); // solhint-disable-line not-rely-on-time kycVerified[beneficiary] = true; uint256 tokens = tokensAllocated; totalPurchased = totalPurchased.add(tokens); tokensPurchased[beneficiary] = tokensPurchased[beneficiary].add(tokens); if (halfVesting) { // half the tokens are put into a time-lock for a pre-defined period uint64 endTimeLock = uint64(startTime + PRECOMMITMENT_VESTING_SECONDS); // Sets a timelock for half the tokens allocated uint256 half = tokens.div(2); TokenTimelock timelock; if (vestedTokens[beneficiary] == 0x0) { timelock = new TokenTimelock(token, beneficiary, endTimeLock); vestedTokens[beneficiary] = address(timelock); } else { timelock = TokenTimelock(vestedTokens[beneficiary]); } token.safeTransfer(beneficiary, half); token.safeTransfer(timelock, tokens.sub(half)); } else { // all tokens are sent to the participant's address token.safeTransfer(beneficiary, tokens); } AddedPrecommitment( beneficiary, tokens ); } /** * @dev Additional finalization logic. Enables token transfers. */ function finalization() internal { if (goalReached()) { burnUnsold(); vault.close(); token.enableTransfers(); } else { vault.enableRefunds(); } } /** * @dev Low level token purchase. Only callable internally. Participants MUST be KYC-verified before purchase * @param participant — The address of the token purchaser */ function buyTokens(address participant) internal { require(kycVerified[participant]); require(now >= startTime); require(now < endTime); require(!isFinalized); require(msg.value != 0); // Calculate the token amount to be allocated uint256 weiAmount = msg.value; uint256 tokens = weiAmount.mul(rate); // Update state tokensPurchased[participant] = tokensPurchased[participant].add(tokens); totalPurchased = totalPurchased.add(tokens); require(totalPurchased <= SALE_CAP); require(tokensPurchased[participant] >= PURCHASER_MIN_TOKEN_CAP); if (now < startTime + 86400) { // if still during the first day of token sale, apply different max cap require(tokensPurchased[participant] <= PURCHASER_MAX_TOKEN_CAP_DAY1); } else { require(tokensPurchased[participant] <= PURCHASER_MAX_TOKEN_CAP); } // Sends ETH contribution to the RefundVault and tokens to participant vault.deposit.value(msg.value)(participant); token.safeTransfer(participant, tokens); TokenPurchase( msg.sender, participant, weiAmount, tokens ); } /** * @dev Burn all remaining (unsold) tokens. * This should be called after sale finalization */ function burnUnsold() internal { // All tokens held by this contract get burned token.burn(token.balanceOf(this)); } }
Contract Security Audit
- Callisto Network- Jun 18th, 2019 - Security Audit Report
[{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"cap","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"enableTransfers","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_cap","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"burner","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burned","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000000000000000000001363156bbee3016d70000000
-----Decoded View---------------
Arg [0] : _cap (uint256): 6000000000000000000000000000
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000001363156bbee3016d70000000
Swarm Source
bzzr://a0db4a7417f51dac893a505484403c713964d24a776ca71d61c0b642f6760aae
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OVERVIEW
SelfKey is a blockchain based self-sovereign identity ecosystem that aims to empower individuals and companies to find more freedom, privacy and wealth through the full ownership of their digital identity.Multichain Portfolio | 27 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 82.01% | $0.003614 | 1,643,525.6194 | $5,940.42 | |
ETH | 13.80% | $0.999586 | 1,000 | $999.59 | |
ETH | 0.14% | $0.001457 | 6,863.15 | $10 | |
ETH | 0.08% | $0.055201 | 100 | $5.52 | |
ETH | 0.04% | $0.00084 | 3,872.475 | $3.25 | |
BSC | 3.34% | $573.02 | 0.4224 | $242.07 | |
BSC | 0.58% | $2,432.25 | 0.0172 | $41.72 | |
BSC | 0.01% | $4.14 | 0.216 | $0.8941 | |
BSC | <0.01% | $0.156302 | 1.69 | $0.2641 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.