Transaction Hash:
Block:
7248345 at Feb-21-2019 09:49:01 AM +UTC
Transaction Fee:
0.0002456724 ETH
$0.93
Gas Used:
24,324 Gas / 10.1 Gwei
Emitted Events:
125 |
LoomToken.Transfer( from=[Sender] 0x851af22f2c5f18eda43b70b895254ed8c307e320, to=[Receiver] 0x8f8e8b3c4de76a31971fe6a87297d8f703be8570, value=7000000000000000000 )
|
126 |
0x8f8e8b3c4de76a31971fe6a87297d8f703be8570.0xa13cf347fb36122550e414f6fd1a0c2e490cff76331c4dcc20f760891ecca12a( 0xa13cf347fb36122550e414f6fd1a0c2e490cff76331c4dcc20f760891ecca12a, 000000000000000000000000851af22f2c5f18eda43b70b895254ed8c307e320, 0000000000000000000000000000000000000000000000006124fee993bc0000, 000000000000000000000000a4e8c3ec456107ea67d3075bf9e3df3a75823db0 )
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127 |
0x8f8e8b3c4de76a31971fe6a87297d8f703be8570.0x91557346f7592c9279b67cc52709a00442f0597658ec38a5fe84568c016331d7( 0x91557346f7592c9279b67cc52709a00442f0597658ec38a5fe84568c016331d7, 0x000000000000000000000000851af22f2c5f18eda43b70b895254ed8c307e320, 0000000000000000000000000000000000000000000000006124fee993bc0000, 000000000000000000000000a4e8c3ec456107ea67d3075bf9e3df3a75823db0 )
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Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x851AF22F...8C307e320 |
0.192324001064033172 Eth
Nonce: 36
|
0.192078328664033172 Eth
Nonce: 37
| 0.0002456724 | ||
0xA4e8C3Ec...A75823DB0 | |||||
0xEA674fdD...16B898ec8
Miner
| (Ethermine) | 685.274619115920179408 Eth | 685.274864788320179408 Eth | 0.0002456724 |
Execution Trace
0x8f8e8b3c4de76a31971fe6a87297d8f703be8570.392d661c( )
-
LoomToken.transferFrom( _from=0x851AF22F2C5F18Eda43B70B895254ED8C307e320, _to=0x8f8E8b3C4De76A31971Fe6a87297D8f703bE8570, _value=7000000000000000000 ) => ( True )
pragma solidity ^0.4.13; library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // 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]; } } 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); } 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; } } contract LoomToken is StandardToken { string public name = "LoomToken"; string public symbol = "LOOM"; uint8 public decimals = 18; // one billion in initial supply uint256 public constant INITIAL_SUPPLY = 1000000000; function LoomToken() public { totalSupply_ = INITIAL_SUPPLY * (10 ** uint256(decimals)); balances[msg.sender] = totalSupply_; } }