Kyber Network Crystal
ERC20
This contract is an ERC20 token.
Name
Kyber Network Crystal
Symbol
KNC
Decimals
18
Total Supply
210,465,359 KNC
About
link
description
Kyber Network’s on-chain liquidity protocol allows decentralized token swaps to be integrated into any application, enabling value exchange to be performed seamlessly between all parties in the ecosystem. Tapping on the protocol, developers can build payment flows and financial apps, including instant token swap services, erc20 payments, and innovative financial dapps - helping to build a world where any token is usable anywhere.
Stats
Public Functions
11
Event Types
3
Code Size
7,828 bytes
Events (3) keyboard_arrow_up
Functions
transferOwnership keyboard_arrow_up
Modifiers help
onlyOwner checks for the following:
Source Code
function transferOwnership(address newOwner) onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
balanceOf keyboard_arrow_up
transfer keyboard_arrow_up
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 keyboard_arrow_up
transferFrom keyboard_arrow_up
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 keyboard_arrow_up
Requirements help
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 keyboard_arrow_up
Modifiers help
onlyWhenTransferEnabled checks for the following:
validDestination checks for the following:
Source Code
function transfer(address _to, uint _value)
onlyWhenTransferEnabled
validDestination(_to)
returns (bool) {
return super.transfer(_to, _value);
}
transferFrom keyboard_arrow_up
Modifiers help
onlyWhenTransferEnabled checks for the following:
validDestination checks for the following:
Source Code
function transferFrom(address _from, address _to, uint _value)
onlyWhenTransferEnabled
validDestination(_to)
returns (bool) {
return super.transferFrom(_from, _to, _value);
}
burn keyboard_arrow_up
Modifiers help
onlyWhenTransferEnabled checks for the following:
Source Code
function burn(uint _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 keyboard_arrow_up
emergencyERC20Drain keyboard_arrow_up
Modifiers help
onlyOwner checks for the following:
Source Code
function emergencyERC20Drain( ERC20 token, uint amount ) onlyOwner {
token.transfer( owner, amount );
}