Kyber Network Crystal

0xdd974d5c2e2928dea5f71b9825b8b646686bd200 Copy

ERC20

This contract is an ERC20 token.

Name Kyber Network Crystal

Symbol KNC

Decimals 18

Total Supply 210,465,359 KNC

About

Kyber Network Crystal Legacy (KNC) is a cryptocurrency and operates on the Ethereum platform. Kyber Network Crystal Legacy has a current supply of 210,252,943.83416528 with 205,045,092.11530113 in circulation. The last known price of Kyber Network Crystal Legacy is 1.32205404 USD and is down -2.30 over the last 24 hours. It is currently trading on 124 active market(s) with $32,051,177.85 traded over the last 24 hours. More information can be found at https://kyber.network/.

Stats

Public Functions 11

Event Types 3

Code Size 7,828 bytes

Events (3)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint

Burn Event

Parameters

_burner	address
_value	uint

Transfer Event

Parameters

_from	address
_to	address
_value	uint

Constants (3)

name Constant

string

Kyber Network Crystal

symbol Constant

string

KNC

decimals Constant

uint

State Variables (7)

saleStartTime Variable

uint

saleEndTime Variable

uint

tokenSaleContract Variable

address

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

Source Code

function transferOwnership(address newOwner) onlyOwner {
  if (newOwner != address(0)) {
    owner = newOwner;
  }
}

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

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

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transfer(address _to, uint256 _value) returns (bool) {
  balances[msg.sender] = balances[msg.sender].sub(_value);
  balances[_to] = balances[_to].add(_value);
  Transfer(msg.sender, _to, _value);
  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) returns (bool) {
  var _allowance = allowed[_from][msg.sender];

  // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
  // require (_value <= _allowance);

  // KYBER-NOTE! code changed to comply with ERC20 standard
  balances[_from] = balances[_from].sub(_value);
  balances[_to] = balances[_to].add(_value);
  //balances[_from] = balances[_from].sub(_value); // this was removed
  allowed[_from][msg.sender] = _allowance.sub(_value);
  Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

One or more of the following:

Source Code

function approve(address _spender, uint256 _value) returns (bool) {
  // 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
  require((_value == 0) || (allowed[msg.sender][_spender] == 0));

  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

_to must not be equal to UNKNOWN VALUE

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

validDestination checks for the following:

_to must not be equal to UNKNOWN VALUE

Source Code

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

burn

Parameters

Name	Type
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

Source Code

function burn(uint256 _value) onlyWhenTransferEnabled returns (bool) {
  balances[msg.sender] = balances[msg.sender].sub(_value);
  totalSupply = totalSupply.sub(_value);
  Burn(msg.sender, _value);
  Transfer(msg.sender, address(0x0), _value);
  return true;
}

burnFrom

Parameters

Name	Type
_from	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyWhenTransferEnabled checks for the following:

Requirements

null

Source Code

function burnFrom(address _from, uint256 _value)
  onlyWhenTransferEnabled
  returns (bool)
{
  assert(transferFrom(_from, msg.sender, _value));
  return burn(_value);
}

emergencyERC20Drain

Parameters

Name	Type
token	ERC20
amount	uint

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function emergencyERC20Drain(ERC20 token, uint256 amount) onlyOwner {
  token.transfer(owner, amount);
}

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.

Kyber Network Crystal

ERC20

About link description

Stats

Events (3) 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.

Transfer Event

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

Constants (3) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

State Variables (7) keyboard_arrow_up

saleStartTime Variable

saleEndTime Variable

tokenSaleContract 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:

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

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

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

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

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:

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

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

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

onlyWhenTransferEnabled checks for the following:

Source Code

burnFrom 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:

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

emergencyERC20Drain 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 (3)

Parameters

Parameters

Parameters

Constants (3)

State Variables (7)

transferOwnership

Parameters

Modifiers

balanceOf

Parameters

transfer

Parameters

allowance

Parameters

transferFrom

Parameters

approve

Parameters

Requirements

transfer

Parameters

Modifiers

transferFrom

Parameters

Modifiers

burn

Parameters

Modifiers

burnFrom

Parameters

Modifiers

Requirements

emergencyERC20Drain

Parameters

Modifiers