Transaction Hash:
Block:
7720170 at May-08-2019 12:58:47 PM +UTC
Transaction Fee:
0.000251676 ETH
$0.65
Gas Used:
62,919 Gas / 4 Gwei
Emitted Events:
32 |
VeritaseumToken.Transfer( from=[Receiver] TokenStore, to=[Sender] 0x343a3c7f789335c9ea60932d34be258f643678d9, value=200400000000000000 )
|
33 |
TokenStore.Withdraw( token=VeritaseumToken, user=[Sender] 0x343a3c7f789335c9ea60932d34be258f643678d9, amount=200400000000000000, balance=3000077567298105682 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x1cE7AE55...ee6Ee33D8 | (Token.Store) | ||||
0x343a3C7F...F643678d9 |
0.10560509604692148 Eth
Nonce: 165
|
0.10535342004692148 Eth
Nonce: 166
| 0.000251676 | ||
0x829BD824...93333A830
Miner
| (F2Pool Old) | 6,082.851119496648023178 Eth | 6,082.851371172648023178 Eth | 0.000251676 | |
0x8f3470A7...b0FF52374 |
Execution Trace
TokenStore.withdrawToken( _token=0x8f3470A7388c05eE4e7AF3d01D8C722b0FF52374, _amount=200400000000000000 )
-
VeritaseumToken.transfer( _to=0x343a3C7F789335C9EA60932D34bE258F643678d9, _value=200400000000000000 ) => ( success=True )
withdrawToken[TokenStore (ln:194)]
safeSub[TokenStore (ln:197)]
transfer[TokenStore (ln:198)]
revert[TokenStore (ln:199)]
Withdraw[TokenStore (ln:201)]
File 1 of 2: TokenStore
File 2 of 2: VeritaseumToken
pragma solidity ^0.4.11; // ERC20 token protocol, see more details at // https://theethereum.wiki/w/index.php/ERC20_Token_Standard // And also https://github.com/ethereum/eips/issues/20 contract Token { function totalSupply() constant returns (uint256 supply); function balanceOf(address _owner) constant returns (uint256 balance); function transfer(address _to, uint256 _value) returns (bool success); function transferFrom(address _from, address _to, uint256 _value) returns (bool success); function approve(address _spender, uint256 _value) returns (bool success); function allowance(address _owner, address _spender) constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } // Safe mathematics to make the code more readable contract SafeMath { function safeMul(uint a, uint b) internal returns (uint) { uint c = a * b; assert(a == 0 || c / a == b); return c; } function safeSub(uint a, uint b) internal returns (uint) { assert(b <= a); return a - b; } function safeAdd(uint a, uint b) internal returns (uint) { uint c = a + b; assert(c>=a && c>=b); return c; } } // Ownable interface to simplify owner checks contract Ownable { address public owner; function Ownable() { owner = msg.sender; } modifier onlyOwner() { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) onlyOwner { require(_newOwner != address(0)); owner = _newOwner; } } // Interface for trading discounts and rebates for specific accounts contract AccountModifiersInterface { function accountModifiers(address _user) constant returns(uint takeFeeDiscount, uint rebatePercentage); function tradeModifiers(address _maker, address _taker) constant returns(uint takeFeeDiscount, uint rebatePercentage); } // Interface for trade tacker contract TradeTrackerInterface { function tradeComplete(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, address _get, address _give, uint _takerFee, uint _makerRebate); } // Exchange contract contract TokenStore is SafeMath, Ownable { // The account that will receive fees address feeAccount; // The account that stores fee discounts/rebates address accountModifiers; // Trade tracker account address tradeTracker; // We charge only the takers and this is the fee, percentage times 1 ether uint public fee; // Mapping of token addresses to mapping of account balances (token 0 means Ether) mapping (address => mapping (address => uint)) public tokens; // Mapping of user accounts to mapping of order hashes to uints (amount of order that has been filled) mapping (address => mapping (bytes32 => uint)) public orderFills; // Address of a next and previous versions of the contract, also status of the contract // can be used for user-triggered fund migrations address public successor; address public predecessor; bool public deprecated; uint16 public version; // Logging events // Note: Order creation is handled off-chain, see explanation further below event Cancel(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s); event Trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address get, address give, uint nonce); event Deposit(address token, address user, uint amount, uint balance); event Withdraw(address token, address user, uint amount, uint balance); event FundsMigrated(address user); function TokenStore(uint _fee, address _predecessor) { feeAccount = owner; fee = _fee; predecessor = _predecessor; deprecated = false; if (predecessor != address(0)) { version = TokenStore(predecessor).version() + 1; } else { version = 1; } } // Throw on default handler to prevent direct transactions of Ether function() { revert(); } modifier deprecable() { require(!deprecated); _; } function deprecate(bool _deprecated, address _successor) onlyOwner { deprecated = _deprecated; successor = _successor; } function changeFeeAccount(address _feeAccount) onlyOwner { require(_feeAccount != address(0)); feeAccount = _feeAccount; } function changeAccountModifiers(address _accountModifiers) onlyOwner { accountModifiers = _accountModifiers; } function changeTradeTracker(address _tradeTracker) onlyOwner { tradeTracker = _tradeTracker; } // Fee can only be decreased! function changeFee(uint _fee) onlyOwner { require(_fee <= fee); fee = _fee; } // Allows a user to get her current discount/rebate function getAccountModifiers() constant returns(uint takeFeeDiscount, uint rebatePercentage) { if (accountModifiers != address(0)) { return AccountModifiersInterface(accountModifiers).accountModifiers(msg.sender); } else { return (0, 0); } } //////////////////////////////////////////////////////////////////////////////// // Deposits, withdrawals, balances //////////////////////////////////////////////////////////////////////////////// function deposit() payable deprecable { tokens[0][msg.sender] = safeAdd(tokens[0][msg.sender], msg.value); Deposit(0, msg.sender, msg.value, tokens[0][msg.sender]); } function withdraw(uint _amount) { require(tokens[0][msg.sender] >= _amount); tokens[0][msg.sender] = safeSub(tokens[0][msg.sender], _amount); if (!msg.sender.call.value(_amount)()) { revert(); } Withdraw(0, msg.sender, _amount, tokens[0][msg.sender]); } function depositToken(address _token, uint _amount) deprecable { // Note that Token(_token).approve(this, _amount) needs to be called // first or this contract will not be able to do the transfer. require(_token != 0); if (!Token(_token).transferFrom(msg.sender, this, _amount)) { revert(); } tokens[_token][msg.sender] = safeAdd(tokens[_token][msg.sender], _amount); Deposit(_token, msg.sender, _amount, tokens[_token][msg.sender]); } function withdrawToken(address _token, uint _amount) { require(_token != 0); require(tokens[_token][msg.sender] >= _amount); tokens[_token][msg.sender] = safeSub(tokens[_token][msg.sender], _amount); if (!Token(_token).transfer(msg.sender, _amount)) { revert(); } Withdraw(_token, msg.sender, _amount, tokens[_token][msg.sender]); } function balanceOf(address _token, address _user) constant returns (uint) { return tokens[_token][_user]; } //////////////////////////////////////////////////////////////////////////////// // Trading //////////////////////////////////////////////////////////////////////////////// // Note: Order creation happens off-chain but the orders are signed by creators, // we validate the contents and the creator address in the logic below function trade(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires, uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s, uint _amount) { bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce); // Check order signatures and expiration, also check if not fulfilled yet if (ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) != _user || block.number > _expires || safeAdd(orderFills[_user][hash], _amount) > _amountGet) { revert(); } tradeBalances(_tokenGet, _amountGet, _tokenGive, _amountGive, _user, msg.sender, _amount); orderFills[_user][hash] = safeAdd(orderFills[_user][hash], _amount); Trade(_tokenGet, _amount, _tokenGive, _amountGive * _amount / _amountGet, _user, msg.sender, _nonce); } function tradeBalances(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, address _user, address _caller, uint _amount) private { uint feeTakeValue = safeMul(_amount, fee) / (1 ether); uint rebateValue = 0; uint tokenGiveValue = safeMul(_amountGive, _amount) / _amountGet; // Proportionate to request ratio // Apply modifiers if (accountModifiers != address(0)) { var (feeTakeDiscount, rebatePercentage) = AccountModifiersInterface(accountModifiers).tradeModifiers(_user, _caller); // Check that the discounts/rebates are never higher then 100% if (feeTakeDiscount > 100) { feeTakeDiscount = 0; } if (rebatePercentage > 100) { rebatePercentage = 0; } feeTakeValue = safeMul(feeTakeValue, 100 - feeTakeDiscount) / 100; // discounted fee rebateValue = safeMul(rebatePercentage, feeTakeValue) / 100; // % of actual taker fee } tokens[_tokenGet][_user] = safeAdd(tokens[_tokenGet][_user], safeAdd(_amount, rebateValue)); tokens[_tokenGet][_caller] = safeSub(tokens[_tokenGet][_caller], safeAdd(_amount, feeTakeValue)); tokens[_tokenGive][_user] = safeSub(tokens[_tokenGive][_user], tokenGiveValue); tokens[_tokenGive][_caller] = safeAdd(tokens[_tokenGive][_caller], tokenGiveValue); tokens[_tokenGet][feeAccount] = safeAdd(tokens[_tokenGet][feeAccount], safeSub(feeTakeValue, rebateValue)); if (tradeTracker != address(0)) { TradeTrackerInterface(tradeTracker).tradeComplete(_tokenGet, _amount, _tokenGive, tokenGiveValue, _user, _caller, feeTakeValue, rebateValue); } } function testTrade(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires, uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s, uint _amount, address _sender) constant returns(bool) { if (tokens[_tokenGet][_sender] < _amount || availableVolume(_tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce, _user, _v, _r, _s) < _amount) { return false; } return true; } function availableVolume(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires, uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s) constant returns(uint) { bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce); if (ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) != _user || block.number > _expires) { return 0; } uint available1 = safeSub(_amountGet, orderFills[_user][hash]); uint available2 = safeMul(tokens[_tokenGive][_user], _amountGet) / _amountGive; if (available1 < available2) return available1; return available2; } function amountFilled(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires, uint _nonce, address _user) constant returns(uint) { bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce); return orderFills[_user][hash]; } function cancelOrder(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires, uint _nonce, uint8 _v, bytes32 _r, bytes32 _s) { bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce); if (!(ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) == msg.sender)) { revert(); } orderFills[msg.sender][hash] = _amountGet; Cancel(_tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce, msg.sender, _v, _r, _s); } //////////////////////////////////////////////////////////////////////////////// // Migrations //////////////////////////////////////////////////////////////////////////////// // User-triggered (!) fund migrations in case contract got updated // Similar to withdraw but we use a successor account instead // As we don't store user tokens list on chain, it has to be passed from the outside function migrateFunds(address[] _tokens) { // Get the latest successor in the chain require(successor != address(0)); TokenStore newExchange = TokenStore(successor); for (uint16 n = 0; n < 20; n++) { // We will look past 20 contracts in the future address nextSuccessor = newExchange.successor(); if (nextSuccessor == address(this)) { // Circular succession revert(); } if (nextSuccessor == address(0)) { // We reached the newest, stop break; } newExchange = TokenStore(nextSuccessor); } // Ether uint etherAmount = tokens[0][msg.sender]; if (etherAmount > 0) { tokens[0][msg.sender] = 0; newExchange.depositForUser.value(etherAmount)(msg.sender); } // Tokens for (n = 0; n < _tokens.length; n++) { address token = _tokens[n]; require(token != address(0)); // 0 = Ether, we handle it above uint tokenAmount = tokens[token][msg.sender]; if (tokenAmount == 0) { continue; } if (!Token(token).approve(newExchange, tokenAmount)) { revert(); } tokens[token][msg.sender] = 0; newExchange.depositTokenForUser(token, tokenAmount, msg.sender); } FundsMigrated(msg.sender); } // This is used for migrations only. To be called by previous exchange only, // user-triggered, on behalf of the user called the migrateFunds method. // Note that it does exactly the same as depositToken, but as this is called // by a previous generation of exchange itself, we credit internally not the // previous exchange, but the user it was called for. function depositForUser(address _user) payable deprecable { require(_user != address(0)); require(msg.value > 0); TokenStore caller = TokenStore(msg.sender); require(caller.version() > 0); // Make sure it's an exchange account tokens[0][_user] = safeAdd(tokens[0][_user], msg.value); } function depositTokenForUser(address _token, uint _amount, address _user) deprecable { require(_token != address(0)); require(_user != address(0)); require(_amount > 0); TokenStore caller = TokenStore(msg.sender); require(caller.version() > 0); // Make sure it's an exchange account if (!Token(_token).transferFrom(msg.sender, this, _amount)) { revert(); } tokens[_token][_user] = safeAdd(tokens[_token][_user], _amount); } }
File 2 of 2: VeritaseumToken
pragma solidity ^0.4.8; contract Ownable { address public owner; function Ownable() { owner = msg.sender; } modifier onlyOwner() { if (msg.sender != owner) { throw; } _; } function transferOwnership(address newOwner) onlyOwner { if (newOwner != address(0)) { owner = newOwner; } } } contract SafeMath { function safeMul(uint a, uint b) internal returns (uint) { uint c = a * b; assert(a == 0 || c / a == b); return c; } function safeDiv(uint a, uint b) internal returns (uint) { assert(b > 0); uint c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint a, uint b) internal returns (uint) { assert(b <= a); return a - b; } function safeAdd(uint a, uint b) internal returns (uint) { uint c = a + b; assert(c>=a && c>=b); return c; } function max64(uint64 a, uint64 b) internal constant returns (uint64) { return a >= b ? a : b; } function min64(uint64 a, uint64 b) internal constant returns (uint64) { return a < b ? a : b; } function max256(uint256 a, uint256 b) internal constant returns (uint256) { return a >= b ? a : b; } function min256(uint256 a, uint256 b) internal constant returns (uint256) { return a < b ? a : b; } function assert(bool assertion) internal { if (!assertion) { throw; } } } contract ERC20 { uint public totalSupply; function balanceOf(address who) constant returns (uint); function allowance(address owner, address spender) constant returns (uint); function transfer(address to, uint value) returns (bool ok); function transferFrom(address from, address to, uint value) returns (bool ok); function approve(address spender, uint value) returns (bool ok); event Transfer(address indexed from, address indexed to, uint value); event Approval(address indexed owner, address indexed spender, uint value); } contract StandardToken is ERC20, SafeMath { mapping(address => uint) balances; mapping (address => mapping (address => uint)) allowed; function transfer(address _to, uint _value) returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], _value); balances[_to] = safeAdd(balances[_to], _value); Transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint _value) returns (bool success) { var _allowance = allowed[_from][msg.sender]; // Check is not needed because safeSub(_allowance, _value) will already throw if this condition is not met // if (_value > _allowance) throw; balances[_to] = safeAdd(balances[_to], _value); balances[_from] = safeSub(balances[_from], _value); allowed[_from][msg.sender] = safeSub(_allowance, _value); Transfer(_from, _to, _value); return true; } function balanceOf(address _owner) constant returns (uint balance) { return balances[_owner]; } function approve(address _spender, uint _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint remaining) { return allowed[_owner][_spender]; } } /// @title Veritaseum Token /// @author Riaan F Venter~ RFVenter~ <[email protected]> contract VeritaseumToken is Ownable, StandardToken { string public name = "Veritaseum"; // name of the token string public symbol = "VERI"; // ERC20 compliant 4 digit token code uint public decimals = 18; // token has 18 digit precision uint public totalSupply = 100000000 ether; // total supply of 100 Million Tokens /// @notice Initializes the contract and allocates all initial tokens to the owner function VeritaseumToken() { balances[msg.sender] = totalSupply; } //////////////// owner only functions below /// @notice To transfer token contract ownership /// @param _newOwner The address of the new owner of this contract function transferOwnership(address _newOwner) onlyOwner { balances[_newOwner] = balances[owner]; balances[owner] = 0; Ownable.transferOwnership(_newOwner); } }