Blockwell

NKN

ERC20

This contract is an ERC20 token.

Name NKN
Symbol NKN
Decimals 18
Total Supply 700,000,000 NKN

About

Stats

Public Functions 9
Event Types 3
Code Size 5,235 bytes

Events (3) keyboard_arrow_up

Approval Event

Parameters help
owner
address help
spender
address help
value
uint256 help

OwnershipTransferred Event

Parameters help
_from
address help
_to
address help

Transfer Event

Parameters help
from
address help
to
address help
value
uint256 help

name Variable

string help

symbol Variable

string help

decimals Variable

uint8 help

totalSupplyCap Variable

uint256 help

transferable Variable

bool help

totalSupply Variable

uint256 help

owner Variable

address help

balances Variable

mapping(address => uint256) help
Internal Variable

allowed Variable

mapping(address => mapping(address => uint256)) help
Internal Variable

Functions Expand All Collapse All

Parameters help

Name Type
_owner
address help

Properties

Visibility help public
Mutability help transaction

Requirements help

Source Code
function transferOwnership(address _owner) public onlyOwner {
  require(_owner != address(0));
  owner = _owner;

  emit OwnershipTransferred(owner, _owner);
}

Parameters help

Name Type
_owner
address help

Properties

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

Parameters help

Name Type
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Source Code
function transfer(address _to, uint256 _value)
  public
  canTransfer
  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;
}

Parameters help

Name Type
_owner
address help
_spender
address help

Properties

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

Parameters help

Name Type
_from
address help
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Source Code
function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public canTransfer 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;
}

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);

Parameters help

Name Type
_transferable
bool help

Properties

Visibility help public
Mutability help transaction
Source Code
function setTransferable(bool _transferable) public onlyOwner {
  transferable = _transferable;
}

Parameters help

Name Type
_spender
address help
_value
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function approve(address _spender, uint256 _value)
  public
  returns (bool success)
{
  // To change the approve amount you first have to reduce the addresses`
  //  allowance to zero by calling `approve(_spender, 0)` if it is not
  //  already 0 to mitigate the race condition described here:
  //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
  if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) {
    revert();
  }
  allowed[msg.sender][_spender] = _value;
  emit Approval(msg.sender, _spender, _value);
  return true;
}

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help payable
Source Code
function() public payable {
  revert();
}

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.