Blockwell

HoloToken

ERC20

This contract is an ERC20 token.

Name HoloToken
Symbol HOT
Decimals 18
Total Supply 177,619,433,541 HOT

About link description

Holo (HOT) is a cryptocurrency and operates on the Ethereum platform. Holo has a current supply of 177,619,433,541.14133 with 172,673,864,847.79962 in circulation. The last known price of Holo is 0.00514464 USD and is down -0.85 over the last 24 hours. It is currently trading on 81 active market(s) with $61,385,064.01 traded over the last 24 hours. More information can be found at https://holochain.org/.

Stats

Public Functions 13
Event Types 6
Code Size 9,326 bytes

Library Use

Uses SafeMath for uint256.

Events (6) keyboard_arrow_up

Approval Event

Parameters help
owner
address help
spender
address help
value
uint256 help

Burn Event

Parameters help
amount
uint256 help

Mint Event

Parameters help
to
address help
amount
uint256 help

MintingFinished Event

Parameters help

OwnershipTransferred Event

Parameters help
previousOwner
address help
newOwner
address help

Transfer Event

Parameters help
from
address help
to
address help
value
uint256 help

name Constant

string help
HoloToken

symbol Constant

string help
HOT

decimals Constant

uint8 help
18

totalSupply Variable

uint256 help

mintingFinished Variable

bool help

destroyer Variable

address help

minter Variable

address help

owner Variable

address help

balances Variable

mapping(address => uint256) help

allowed Variable

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

Functions Expand All Collapse All

Parameters help

Name Type
newOwner
address help

Properties

Visibility help public
Mutability help transaction

Requirements help

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

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
  whenMintingFinished
  returns (bool)
{
  require(_to != address(0));
  require(_value <= balances[msg.sender]);

  // SafeMath.sub will throw if there is not enough balance.
  balances[msg.sender] = balances[msg.sender].sub(_value);
  balances[_to] = balances[_to].add(_value);
  Transfer(msg.sender, _to, _value);
  return true;
}

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
_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 whenMintingFinished 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);
  Transfer(_from, _to, _value);
  return true;
}

Parameters help

Name Type
_spender
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Source Code
function approve(address _spender, uint256 _value)
  public
  whenMintingFinished
  returns (bool)
{
  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _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
_spender
address help
_addedValue
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function increaseApproval(address _spender, uint256 _addedValue)
  public
  returns (bool)
{
  allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(
    _addedValue
  );
  Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
  return true;
}

Parameters help

Name Type
_spender
address help
_subtractedValue
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function decreaseApproval(address _spender, uint256 _subtractedValue)
  public
  returns (bool)
{
  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;
}

Parameters help

Name Type
_minter
address help

Properties

Visibility help public
Mutability help transaction
Source Code
function setMinter(address _minter) external onlyOwner {
  minter = _minter;
}

Parameters help

Name Type
_to
address help
_amount
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
function mint(address _to, uint256 _amount)
  external
  onlyMinter
  canMint
  returns (bool)
{
  require(balances[_to] + _amount > balances[_to]); // Guard against overflow
  require(totalSupply + _amount > totalSupply); // Guard against overflow  (this should never happen)
  totalSupply = totalSupply.add(_amount);
  balances[_to] = balances[_to].add(_amount);
  Mint(_to, _amount);
  return true;
}

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help transaction
Source Code
function finishMinting() external onlyMinter returns (bool) {
  mintingFinished = true;
  MintingFinished();
  return true;
}

Parameters help

Name Type
_destroyer
address help

Properties

Visibility help public
Mutability help transaction
Source Code
function setDestroyer(address _destroyer) external onlyOwner {
  destroyer = _destroyer;
}

Parameters help

Name Type
_amount
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
function burn(uint256 _amount) external onlyDestroyer {
  require(balances[destroyer] >= _amount && _amount > 0);
  balances[destroyer] = balances[destroyer].sub(_amount);
  totalSupply = totalSupply.sub(_amount);
  Burn(_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.