Quantstamp Token

0x99ea4db9ee77acd40b119bd1dc4e33e1c070b80d Copy

ERC20

This contract is an ERC20 token.

Name Quantstamp Token

Symbol QSP

Decimals 18

Total Supply 976,442,388 QSP

About

Quantstamp (QSP) is a cryptocurrency and operates on the Ethereum platform. Quantstamp has a current supply of 976,442,388.321185 with 713,801,946.7046682 in circulation. The last known price of Quantstamp is 0.02959925 USD and is down -0.51 over the last 24 hours. It is currently trading on 9 active market(s) with $435,196.56 traded over the last 24 hours. More information can be found at https://quantstamp.com/.

Stats

Public Functions 11

Event Types 4

Code Size 14,998 bytes

Events (4)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Burn Event

Parameters

burner	address
value	uint256

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

Transfer Event

Parameters

from	address
to	address
value	uint256

Constants (6)

name Constant

string

Quantstamp Token

symbol Constant

string

QSP

decimals Constant

uint8

INITIAL_SUPPLY Constant

uint256

1000000000 * UNKNOWN VALUE

CROWDSALE_ALLOWANCE Constant

uint256

650000000 * UNKNOWN VALUE

ADMIN_ALLOWANCE Constant

uint256

350000000 * UNKNOWN VALUE

State Variables (9)

crowdSaleAllowance Variable

uint256

adminAllowance Variable

uint256

crowdSaleAddr Variable

address

adminAddr Variable

address

transferEnabled Variable

bool

totalSupply Variable

uint256

owner Variable

address

allowed Variable

mapping(address => mapping(address => uint256))

Internal Variable

balances Variable

mapping(address => uint256)

Internal Variable

Functions Expand All Collapse All

transferOwnership

Parameters

Name	Type
newOwner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

newOwner must not be equal to UNKNOWN VALUE

Source Code

function transferOwnership(address newOwner) public onlyOwner {
  require(newOwner != address(0));
  OwnershipTransferred(owner, newOwner);
  owner = newOwner;
}

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

function balanceOf(address _owner) public constant returns (uint256 balance) {
  return balances[_owner];
}

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

_to must not be equal to UNKNOWN VALUE

_to must not be equal to owner

_to must not be equal to UNKNOWN VALUE

Requirements

_to must not be equal to UNKNOWN VALUE

Source Code

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

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

function allowance(address _owner, address _spender)
  public
  constant
  returns (uint256 remaining)
{
  return allowed[_owner][_spender];
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

_to must not be equal to UNKNOWN VALUE

_to must not be equal to owner

_to must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public onlyWhenTransferEnabled validDestination(_to) returns (bool) {
  bool result = super.transferFrom(_from, _to, _value);
  if (result) {
    if (msg.sender == crowdSaleAddr)
      crowdSaleAllowance = crowdSaleAllowance.sub(_value);
    if (msg.sender == adminAddr) adminAllowance = adminAllowance.sub(_value);
  }
  return result;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function approve(address _spender, uint256 _value) public returns (bool) {
  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

increaseApproval

Parameters

Name	Type
_spender	address
_addedValue	uint

Properties

Visibility public

Mutability transaction

Source Code

function increaseApproval(address _spender, uint256 _addedValue)
  returns (bool success)
{
  allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(
    _addedValue
  );
  Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
  return true;
}

decreaseApproval

Parameters

Name	Type
_spender	address
_subtractedValue	uint

Properties

Visibility public

Mutability transaction

Source Code

function decreaseApproval(address _spender, uint256 _subtractedValue)
  returns (bool success)
{
  uint256 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;
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

One or more of the following: - owner must be equal to the sender's address - ORtransferEnabled must be true

_value must be less than or equal to balances for the sender's address

_value must be greater than 0

Source Code

function burn(uint256 _value) public {
  require(transferEnabled || msg.sender == owner);
  require(balances[msg.sender] >= _value);
  super.burn(_value);
  Transfer(msg.sender, address(0x0), _value);
}

setCrowdsale

Parameters

Name	Type
_crowdSaleAddr	address
_amountForSale	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

transferEnabled must not be true

_amountForSale must be less than or equal to crowdSaleAllowance

Source Code

function setCrowdsale(address _crowdSaleAddr, uint256 _amountForSale)
  external
  onlyOwner
{
  require(!transferEnabled);
  require(_amountForSale <= crowdSaleAllowance);

  // if 0, then full available crowdsale supply is assumed
  uint256 amount = (_amountForSale == 0) ? crowdSaleAllowance : _amountForSale;

  // Clear allowance of old, and set allowance of new
  approve(crowdSaleAddr, 0);
  approve(_crowdSaleAddr, amount);

  crowdSaleAddr = _crowdSaleAddr;
}

enableTransfer

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function enableTransfer() external onlyOwner {
  transferEnabled = true;
  approve(crowdSaleAddr, 0);
  approve(adminAddr, 0);
  crowdSaleAllowance = 0;
  adminAllowance = 0;
}

Internal Functions Expand All Collapse All

Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.

Quantstamp Token

ERC20

About link description

Stats

Events (4) keyboard_arrow_up

Approval Event

Parameters help Event parameters list the data that an event contains.

Burn Event

Parameters help Event parameters list the data that an event contains.

OwnershipTransferred Event

Parameters help Event parameters list the data that an event contains.

Transfer Event

Parameters help Event parameters list the data that an event contains.

Constants (6) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

INITIAL_SUPPLY Constant

CROWDSALE_ALLOWANCE Constant

ADMIN_ALLOWANCE Constant

State Variables (9) keyboard_arrow_up

crowdSaleAllowance Variable

adminAllowance Variable

crowdSaleAddr Variable

adminAddr Variable

transferEnabled Variable

totalSupply Variable

owner Variable

allowed Variable

balances Variable

Functions Expand All Collapse All

transferOwnership keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

balanceOf keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transfer keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

allowance keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transferFrom keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

Source Code

approve keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

increaseApproval keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

decreaseApproval keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

burn keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

setCrowdsale keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (6)

State Variables (9)

transferOwnership

Parameters

Modifiers

Requirements

balanceOf

Parameters

transfer

Parameters

Modifiers

Requirements

allowance

Parameters

transferFrom

Parameters

Modifiers

approve

Parameters

increaseApproval

Parameters

decreaseApproval

Parameters

burn

Parameters

Requirements

setCrowdsale

Parameters

Modifiers

Requirements

enableTransfer

Parameters

Modifiers