ETH Price: $3,837.39 (-0.21%)

Token

OriginToken (OGN)
 

Overview

Max Total Supply

1,409,664,846 OGN

Holders

46,359 ( 0.019%)

Market

Price

$0.16 @ 0.000042 ETH (-1.05%)

Onchain Market Cap

$226,094,734.99

Circulating Supply Market Cap

$110,244,075.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 OGN

Value
$0.00
0x8aeed48c23e66462b256202955808ac505780462
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OVERVIEW

Origin Protocol is a platform for creating decentralized marketplaces on the blockchain.

Market

Volume (24H):$39,338,771.00
Market Capitalization:$110,244,075.00
Circulating Supply:688,488,203.00 OGN
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Hotcoin
OGN-USDT$0.1602
0.0000419 Eth
$8,976,547.00
56,025,506.000 OGN
22.8101%
2
Binance
OGN-USDT$0.1606
0.0000419 Eth
$6,751,858.00
42,173,119.000 OGN
17.1703%
3
WhiteBIT
OGN-USDT$0.1599
0.0000418 Eth
$6,454,166.00
40,359,261.020 OGN
16.4318%
4
Nami.Exchange
OGN-USDT$0.1598
0.0000418 Eth
$4,096,524.00
25,627,484.000 OGN
10.4339%
5
Bibox
OGN-USDT$0.1606
0.0000419 Eth
$3,335,439.00
20,764,959.000 OGN
8.4542%
6
Nami.Exchange
OGN-VNST$0.1598
0.0000417 Eth
$3,196,643.00
20,004,230.000 OGN
8.1445%
7
Coinbase Exchange
OGN-USD$0.1605
0.0000419 Eth
$687,693.00
4,284,690.700 OGN
1.7445%
8
Bitunix
OGN-USDT$0.1606
0.0000419 Eth
$686,602.00
4,274,712.000 OGN
1.7404%
9
HTX
OGN-USDT$0.1606
0.0000419 Eth
$526,724.00
3,285,810.607 OGN
1.3378%
10
Binance
OGN-TRY$0.1614
0.0000421 Eth
$503,750.00
3,121,833.000 OGN
1.2710%
11
BtcTurk | Kripto
OGN-TRY$0.1618
0.0000422 Eth
$477,133.00
2,948,289.642 OGN
1.2004%
12
Gate.io
OGN-USDT$0.1604
0.0000418 Eth
$385,835.00
2,402,303.510 OGN
0.9781%
13
KuCoin
OGN-USDT$0.1606
0.0000419 Eth
$376,440.00
2,344,223.292 OGN
0.9544%
14
Paribu
OGN-TRY$0.1612
0.0000422 Eth
$356,490.00
2,211,943.000 OGN
0.9006%
15
Bitget
OGN-USDT$0.1609
0.0000420 Eth
$242,522.00
1,505,112.033 OGN
0.6128%
16
Bitcointry
OGN-USDT$0.1599
0.0000418 Eth
$225,835.00
1,405,402.900 OGN
0.5722%
17
Uniswap V3 (Ethereum)
0X8207C1FFC5B6804F6024322CCF34F29C3541AE26-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.1605
0.0000419 Eth
$208,533.00
1,313,942.709 0X8207C1FFC5B6804F6024322CCF34F29C3541AE26
0.5350%
18
CoinTR
OGN-TRY$0.161
0.0000420 Eth
$166,193.00
1,030,194.000 OGN
0.4194%
19
CoinCatch
OGN-USDT$0.1598
0.0000417 Eth
$163,683.00
1,018,003.466 OGN
0.4145%
20
Binance
OGN-BTC$0.1599
0.0000417 Eth
$148,941.00
949,512.000 OGN
0.3866%
21
BingX
OGN-USDT$0.1606
0.0000419 Eth
$147,785.00
921,188.663 OGN
0.3751%
22
Aerodrome (Base)
0XDBFEFD2E8460A6EE4955A68582F85708BAEA60A3-0X7002458B1DF59ECCB57387BC79FFC7C29E22E6F7$0.1527
0.0000399 Eth
$147,167.00
39.073 0XDBFEFD2E8460A6EE4955A68582F85708BAEA60A3
0.0000%
23
Bitrue
OGN-USDC$0.1601
0.0000418 Eth
$139,085.00
868,533.000 OGN
0.3536%
24
BtcTurk | Kripto
OGN-USDT$0.1603
0.0000418 Eth
$126,182.00
787,021.379 OGN
0.3204%
25
Bitrue
OGN-USDT$0.1601
0.0000418 Eth
$117,793.00
735,779.000 OGN
0.2996%
26
Bitvavo
OGN-EUR$0.1597
0.0000417 Eth
$107,208.00
671,389.884 OGN
0.2733%
27
MEXC
OGN-USDT$0.1599
0.0000418 Eth
$103,066.00
644,466.860 OGN
0.2624%
28
Bithumb
OGN-KRW$0.1596
0.0000416 Eth
$102,327.00
641,067.269 OGN
0.2610%
29
Bilaxy
OGN-ETH$0.1692
0.0000442 Eth
$75,980.00
449,053.000 OGN
0.1828%
30
CoinTR
OGN-USDT$0.1609
0.0000420 Eth
$64,380.00
400,069.000 OGN
0.1629%
31
Tapbit
OGN-USDT$0.1385
0.0000383 Eth
$47,216.00
334,367.000 OGN
0.1361%
32
Kraken
OGN-USD$0.1604
0.0000418 Eth
$46,715.00
291,238.010 OGN
0.1186%
33
Upbit
OGN-BTC$0.1599
0.0000417 Eth
$46,030.00
287,898.644 OGN
0.1172%
34
Pionex
OGN-USDT$0.1599
0.0000417 Eth
$40,874.00
255,318.690 OGN
0.1039%
35
DeGate
0X8207C1FFC5B6804F6024322CCF34F29C3541AE26-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.1606
0.0000419 Eth
$36,473.00
227,640.350 0X8207C1FFC5B6804F6024322CCF34F29C3541AE26
0.0927%
36
BloFin
OGN-USDT$0.1611
0.0000420 Eth
$34,933.00
217,300.000 OGN
0.0885%
37
Kraken
OGN-EUR$0.1597
0.0000417 Eth
$29,110.00
182,264.099 OGN
0.0742%
38
Bit2Me
OGN-EUR$0.1597
0.0000417 Eth
$28,646.00
178,648.217 OGN
0.0727%
39
Crypto.com Exchange
OGN-USD$0.1601
0.0000418 Eth
$23,075.00
144,172.000 OGN
0.0587%
40
Upbit Indonesia
OGN-BTC$0.1598
0.0000417 Eth
$22,014.00
137,734.183 OGN
0.0561%
41
LATOKEN
OGN-USDT$0.1598
0.0000417 Eth
$19,899.78
124,519.844 OGN
0.0507%
42
WEEX
OGN-USDT$0.1604
0.0000419 Eth
$14,520.94
90,924.000 OGN
0.0370%
43
LATOKEN
OGN-BTC$0.1604
0.0000420 Eth
$13,646.78
85,077.511 OGN
0.0346%
44
CoinDCX
OGN-INR$0.162
0.0000423 Eth
$13,526.83
0.000 OGN
0.0000%
45
CoinEx
OGN-USDT$0.1599
0.0000417 Eth
$10,648.90
66,295.794 OGN
0.0270%
46
TokoCrypto
OGN-USDT$0.1606
0.0000419 Eth
$10,367.31
64,548.518 OGN
0.0263%
47
ProBit Global
OGN-BTC$0.1607
0.0000420 Eth
$8,608.33
53,563.902 OGN
0.0218%
48
CoinJar Exchange
OGN-AUD$0.164
0.0000429 Eth
$6,541.88
39,900.000 OGN
0.0162%
49
KuCoin
OGN-BTC$0.1597
0.0000417 Eth
$6,371.31
39,903.618 OGN
0.0162%
50
Tothemoon
OGN-USDT$0.1607
0.0000420 Eth
$4,927.84
30,668.000 OGN
0.0125%
51
Coinone
OGN-KRW$0.1609
0.0000420 Eth
$3,579.68
22,251.079 OGN
0.0091%
52
Mercado Bitcoin
OGN-BRL$0.1664
0.0000435 Eth
$2,312.91
13,899.892 OGN
0.0057%
53
Indodax
OGN-IDR$0.1579
0.0000412 Eth
$1,703.92
10,792.927 OGN
0.0044%
54
Pionex
OGN-BTC$0.1606
0.0000420 Eth
$1,673.11
10,674.000 OGN
0.0043%
55
Mudrex
OGN-USDT$0.1604
0.0000419 Eth
$1,626.72
10,143.231 OGN
0.0041%
56
CEX.IO
OGN-EUR$0.1606
0.0000419 Eth
$1,237.00
7,865.051 OGN
0.0032%
57
CEX.IO
OGN-USDT$0.1599
0.0000417 Eth
$1,234.51
7,865.051 OGN
0.0032%
58
CoinJar Exchange
OGN-USDC$0.1616
0.0000420 Eth
$1,212.27
7,501.182 OGN
0.0031%
59
Binance US
OGN-USDT$0.1549
0.0000405 Eth
$1,014.44
6,547.178 OGN
0.0027%
60
CoinJar Exchange
OGN-USD$0.1694
0.0000437 Eth
$626.78
3,700.000 OGN
0.0015%
61
BitMart
OGN-USDT$0.1595
0.0000416 Eth
$600.72
3,765.600 OGN
0.0015%
62
CoinJar Exchange
OGN-GBP$0.1389
0.0000386 Eth
$305.49
2,200.000 OGN
0.0009%
63
Bittime
OGN-IDR$0.1603
0.0000419 Eth
$236.75
1,488.200 OGN
0.0006%
64
ProBit Global
OGN-USDT$0.1619
0.0000422 Eth
$211.19
1,304.181 OGN
0.0005%
65
GoPax
OGN-KRW$0.1328
0.0000347 Eth
$204.89
1,543.142 OGN
0.0006%
66
Gate.io
OGN-TRY$0.1623
0.0000423 Eth
$198.26
1,233.900 OGN
0.0005%
67
Uniswap V2 (Ethereum)
0X8207C1FFC5B6804F6024322CCF34F29C3541AE26-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.1614
0.0000420 Eth
$156.43
1,000.665 0X8207C1FFC5B6804F6024322CCF34F29C3541AE26
0.0004%
68
Aerodrome (Base)
0X7002458B1DF59ECCB57387BC79FFC7C29E22E6F7-0X4200000000000000000000000000000000000006$0.1527
0.0000399 Eth
$70.84
456.221 0X7002458B1DF59ECCB57387BC79FFC7C29E22E6F7
0.0002%
69
TokoCrypto
OGN-BTC$0.1519
0.0000415 Eth
$24.58
161.886 OGN
0.0001%
70
CEX.IO
OGN-USD$0.1601
0.0000418 Eth
$17.50
107.268 OGN
0.0000%
71
Gate.io
OGN-ETH$0.1666
0.0000435 Eth
$9.65
57.940 OGN
0.0000%
72
HitBTC
OGN-BTC$0.1034
0.0000281 Eth
$8.27
80.000 OGN
0.0000%
73
FMFW.io
OGN-BTC$0.1034
0.0000281 Eth
$8.27
80.000 OGN
0.0000%
74
Nominex
OGN-TRY$0.1399
0.0000386 Eth
$7.20
51.462 OGN
0.0000%
75
Poloniex
OGN-USDT$0.1588
0.0000415 Eth
$2.00
12.595 OGN
0.0000%
76
HitBTC
OGN-USDT$0.1401
0.0000378 Eth
$0.1261
0.900 OGN
0.0000%
77
FMFW.io
OGN-USDT$0.1401
0.0000378 Eth
$0.1261
0.900 OGN
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
OriginToken

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2018-10-04
*/

pragma solidity ^0.4.24;
// produced by the Solididy File Flattener (c) David Appleton 2018
// contact : [email protected]
// released under Apache 2.0 licence
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 Ownable {
  address public owner;


  event OwnershipRenounced(address indexed previousOwner);
  event OwnershipTransferred(
    address indexed previousOwner,
    address indexed newOwner
  );


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() 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 relinquish control of the contract.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function transferOwnership(address _newOwner) public onlyOwner {
    _transferOwnership(_newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address _newOwner) internal {
    require(_newOwner != address(0));
    emit OwnershipTransferred(owner, _newOwner);
    owner = _newOwner;
  }
}

library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
    // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (a == 0) {
      return 0;
    }

    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 a / b;
  }

  /**
  * @dev Subtracts 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 c) {
    c = a + b;
    assert(c >= a);
    return c;
  }
}

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 Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused public {
    paused = true;
    emit Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused public {
    paused = false;
    emit Unpause();
  }
}

contract DetailedERC20 is ERC20 {
  string public name;
  string public symbol;
  uint8 public decimals;

  constructor(string _name, string _symbol, uint8 _decimals) public {
    name = _name;
    symbol = _symbol;
    decimals = _decimals;
  }
}

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]);

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit 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) {
    return balances[_owner];
  }

}

contract BurnableToken is BasicToken {

  event Burn(address indexed burner, uint256 value);

  /**
   * @dev Burns a specific amount of tokens.
   * @param _value The amount of token to be burned.
   */
  function burn(uint256 _value) public {
    _burn(msg.sender, _value);
  }

  function _burn(address _who, uint256 _value) internal {
    require(_value <= balances[_who]);
    // no need to require value <= totalSupply, since that would imply the
    // sender's balance is greater than the totalSupply, which *should* be an assertion failure

    balances[_who] = balances[_who].sub(_value);
    totalSupply_ = totalSupply_.sub(_value);
    emit Burn(_who, _value);
    emit Transfer(_who, address(0), _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);
    emit 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;
    emit 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));
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @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);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

contract PausableToken is StandardToken, Pausable {

  function transfer(
    address _to,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.transfer(_to, _value);
  }

  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.transferFrom(_from, _to, _value);
  }

  function approve(
    address _spender,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.approve(_spender, _value);
  }

  function increaseApproval(
    address _spender,
    uint _addedValue
  )
    public
    whenNotPaused
    returns (bool success)
  {
    return super.increaseApproval(_spender, _addedValue);
  }

  function decreaseApproval(
    address _spender,
    uint _subtractedValue
  )
    public
    whenNotPaused
    returns (bool success)
  {
    return super.decreaseApproval(_spender, _subtractedValue);
  }
}

contract MintableToken is StandardToken, Ownable {
  event Mint(address indexed to, uint256 amount);
  event MintFinished();

  bool public mintingFinished = false;


  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  modifier hasMintPermission() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @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
  )
    hasMintPermission
    canMint
    public
    returns (bool)
  {
    totalSupply_ = totalSupply_.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    emit 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;
    emit MintFinished();
    return true;
  }
}

contract WhitelistedPausableToken is PausableToken {
    // UNIX timestamp (in seconds) after which this whitelist no longer applies
    uint256 public whitelistExpiration;
    // While the whitelist is active, either the sender or recipient must be
    // in allowedTransactors.
    mapping (address => bool) public allowedTransactors;

    event SetWhitelistExpiration(uint256 expiration);
    event AllowedTransactorAdded(address sender);
    event AllowedTransactorRemoved(address sender);

    //
    // Functions for maintaining whitelist
    //

    modifier allowedTransfer(address _from, address _to) {
        require(
            // solium-disable-next-line operator-whitespace
            !whitelistActive() ||
            allowedTransactors[_from] ||
            allowedTransactors[_to],
            "neither sender nor recipient are allowed"
        );
        _;
    }

    function whitelistActive() public view returns (bool) {
        return block.timestamp < whitelistExpiration;
    }

    function addAllowedTransactor(address _transactor) public onlyOwner {
        emit AllowedTransactorAdded(_transactor);
        allowedTransactors[_transactor] = true;
    }

    function removeAllowedTransactor(address _transactor) public onlyOwner {
        emit AllowedTransactorRemoved(_transactor);
        delete allowedTransactors[_transactor];
    }

    /**
    * @dev Set the whitelist expiration, after which the whitelist no longer
    * applies.
    */
    function setWhitelistExpiration(uint256 _expiration) public onlyOwner {
        // allow only if whitelist expiration hasn't yet been set, or if the
        // whitelist expiration hasn't passed yet
        require(
            whitelistExpiration == 0 || whitelistActive(),
            "an expired whitelist cannot be extended"
        );
        // prevent possible mistakes in calling this function
        require(
            _expiration >= block.timestamp + 1 days,
            "whitelist expiration not far enough into the future"
        );
        emit SetWhitelistExpiration(_expiration);
        whitelistExpiration = _expiration;
    }

    //
    // ERC20 transfer functions that have been overridden to enforce the
    // whitelist.
    //

    function transfer(
        address _to,
        uint256 _value
    )
        public
        allowedTransfer(msg.sender, _to)
        returns (bool)
    {
        return super.transfer(_to, _value);
    }

    function transferFrom(
        address _from,
        address _to,
        uint256 _value
    )
    public
        allowedTransfer(_from, _to)
    returns (bool)
    {
        return super.transferFrom(_from, _to, _value);
    }
}

contract OriginToken is BurnableToken, MintableToken, WhitelistedPausableToken, DetailedERC20 {
    event AddCallSpenderWhitelist(address enabler, address spender);
    event RemoveCallSpenderWhitelist(address disabler, address spender);

    mapping (address => bool) public callSpenderWhitelist;

    // @dev Constructor that gives msg.sender all initial tokens.
    constructor(uint256 _initialSupply) DetailedERC20("OriginToken", "OGN", 18) public {
        owner = msg.sender;
        mint(owner, _initialSupply);
    }

    //
    // Burn methods
    //

    // @dev Burns tokens belonging to the sender
    // @param _value Amount of token to be burned
    function burn(uint256 _value) public onlyOwner {
        // TODO: add a function & modifier to enable for all accounts without doing
        // a contract migration?
        super.burn(_value);
    }

    // @dev Burns tokens belonging to the specified address
    // @param _who The account whose tokens we're burning
    // @param _value Amount of token to be burned
    function burn(address _who, uint256 _value) public onlyOwner {
        _burn(_who, _value);
    }

    //
    // approveAndCall methods
    //

    // @dev Add spender to whitelist of spenders for approveAndCall
    // @param _spender Address to add
    function addCallSpenderWhitelist(address _spender) public onlyOwner {
        callSpenderWhitelist[_spender] = true;
        emit AddCallSpenderWhitelist(msg.sender, _spender);
    }

    // @dev Remove spender from whitelist of spenders for approveAndCall
    // @param _spender Address to remove
    function removeCallSpenderWhitelist(address _spender) public onlyOwner {
        delete callSpenderWhitelist[_spender];
        emit RemoveCallSpenderWhitelist(msg.sender, _spender);
    }

    // @dev Approve transfer of tokens and make a contract call in a single
    // @dev transaction. This allows a DApp to avoid requiring two MetaMask
    // @dev approvals for a single logical action, such as creating a listing,
    // @dev which requires the seller to approve a token transfer and the
    // @dev marketplace contract to transfer tokens from the seller.
    //
    // @dev This is based on the ERC827 function approveAndCall and avoids
    // @dev security issues by only working with a whitelisted set of _spender
    // @dev addresses. The other difference is that the combination of this
    // @dev function ensures that the proxied function call receives the
    // @dev msg.sender for this function as its first parameter.
    //
    // @param _spender The address that will spend the funds.
    // @param _value The amount of tokens to be spent.
    // @param _selector Function selector for function to be called.
    // @param _callParams Packed, encoded parameters, omitting the first parameter which is always msg.sender
    function approveAndCallWithSender(
        address _spender,
        uint256 _value,
        bytes4 _selector,
        bytes _callParams
    )
        public
        payable
        returns (bool)
    {
        require(_spender != address(this), "token contract can't be approved");
        require(callSpenderWhitelist[_spender], "spender not in whitelist");

        require(super.approve(_spender, _value), "approve failed");

        bytes memory callData = abi.encodePacked(_selector, uint256(msg.sender), _callParams);
        // solium-disable-next-line security/no-call-value
        require(_spender.call.value(msg.value)(callData), "proxied call failed");
        return true;
    }
}

Contract Security Audit

Contract ABI

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000033b2e3c9fd0803ce8000000

-----Decoded View---------------
Arg [0] : _initialSupply (uint256): 1000000000000000000000000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000033b2e3c9fd0803ce8000000


Swarm Source

bzzr://a1f23bff07bb597b5589c638de2919d4ce0fbc00cabdca1bde3ce5d034fde43a
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