Blockwell

Quantstamp Token

ERC20

This contract is an ERC20 token.

Name Quantstamp Token
Symbol QSP
Decimals 18
Total Supply 976,442,388 QSP

About link description

Quantstamp is a leader in blockchain security providing expert security audits and blockchain solutions. Top crypto and enterprise companies including Ethereum 2.0 (Prysmatic Labs Client), Binance, MakerDAO, Chainlink, eToro, and World Economic Forum choose Quantstamp to secure their blockchain applications. QSP is an ERC-20 token used for verifying smart contracts on the decentralized QSP Security Protocol. Users can buy automated scans of smart contracts with QSP, and validators can earn QSP for helping provide decentralized security scans on the network at protocol.quantstamp.com The decentralized protocol is open source at https://github.com/quantstamp.

Stats

Public Functions 11
Event Types 4
Code Size 14,998 bytes

Approval Event

Parameters help
owner
address help
spender
address help
value
uint256 help

Burn Event

Parameters help
burner
address help
value
uint256 help

OwnershipTransferred Event

Parameters help
previousOwner
address help
newOwner
address help

Transfer Event

Parameters help
from
address help
to
address help
value
uint256 help

Functions Expand All Collapse All

transferOwnership keyboard_arrow_up

Parameters help

Name Type
newOwner
address help

Properties

Visibility help public
Mutability help transaction

Requirements help

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

balanceOf keyboard_arrow_up

Parameters help

Name Type
_owner
address help

Properties

Visibility help public
Mutability help constant
Source Code
  function balanceOf(address _owner) public constant returns (uint256 balance) {
    return balances[_owner];
  }

transfer keyboard_arrow_up

Parameters help

Name Type
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Modifiers help

onlyWhenTransferEnabled checks for the following:

Requirements help

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

allowance keyboard_arrow_up

Parameters help

Name Type
_owner
address help
_spender
address help

Properties

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

transferFrom keyboard_arrow_up

Parameters help

Name Type
_from
address help
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Modifiers help

onlyWhenTransferEnabled checks for the following:
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 keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_value
uint256 help

Properties

Visibility help public
Mutability help 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 keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_addedValue
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
  function increaseApproval (address _spender, uint _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 keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_subtractedValue
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
  function decreaseApproval (address _spender, uint _subtractedValue)
    returns (bool success) {
    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;
  }

burn keyboard_arrow_up

Parameters help

Name Type
_value
uint256 help

Properties

Visibility help public
Mutability help transaction
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 keyboard_arrow_up

Parameters help

Name Type
_crowdSaleAddr
address help
_amountForSale
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
    function setCrowdsale(address _crowdSaleAddr, uint256 _amountForSale) external onlyOwner {
        require(!transferEnabled);
        require(_amountForSale <= crowdSaleAllowance);

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

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

        crowdSaleAddr = _crowdSaleAddr;
    }

enableTransfer keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help transaction
Source Code
    function enableTransfer() external onlyOwner {
        transferEnabled = true;
        approve(crowdSaleAddr, 0);
        approve(adminAddr, 0);
        crowdSaleAllowance = 0;
        adminAllowance = 0;
    }