Blockwell

HashCoin

ERC20

This contract is an ERC20 token.

Name HashCoin
Symbol HSC
Decimals 18
Total Supply 50,000,000,000 HSC

About link

HashCoin (HSC) is a cryptocurrency and operates on the Ethereum platform. HashCoin has a current supply of 50,000,000,000 with 12,863,911,325.5 in circulation. The last known price of HashCoin is 0.00002987 USD and is down -1.87 over the last 24 hours. It is currently trading on 2 active market(s) with $71,946.53 traded over the last 24 hours. More information can be found at https://www.hashfuture.io/.

Stats

Public Functions 11
Event Types 3
Code Size 7,486 bytes

Events (3) keyboard_arrow_up

Burn Event

Parameters help
from
address help
value
uint256 help

FrozenFunds Event

Parameters help
target
address help
frozen
bool help

Transfer Event

Parameters help
from
address help
to
address help
value
uint256 help

sellPrice Variable

uint256 help

buyPrice Variable

uint256 help

owner Variable

address help

name Variable

string help

symbol Variable

string help

decimals Variable

uint8 help

totalSupply Variable

uint256 help

frozenAccount Variable

mapping(address => bool) help

balanceOf Variable

mapping(address => uint256) help

allowance Variable

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

Functions Expand All Collapse All

Parameters help

Name Type
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Requirements help

Source Code
function transfer(address _to, uint256 _value) public {
  _transfer(msg.sender, _to, _value);
}

Parameters help

Name Type
_from
address help
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction

Requirements help

Source Code
function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public returns (bool success) {
  require(_value <= allowance[_from][msg.sender]);
  allowance[_from][msg.sender] -= _value;
  _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 success)
{
  allowance[msg.sender][_spender] = _value;
  return true;
}

approveAndCall keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_value
uint256 help
_extraData
bytes help

Properties

Visibility help public
Mutability help transaction
Source Code
function approveAndCall(
  address _spender,
  uint256 _value,
  bytes _extraData
) public returns (bool success) {
  tokenRecipient spender = tokenRecipient(_spender);
  if (approve(_spender, _value)) {
    spender.receiveApproval(msg.sender, _value, this, _extraData);
    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 returns (bool success) {
  require(balanceOf[msg.sender] >= _value);
  balanceOf[msg.sender] -= _value;
  totalSupply -= _value;
  Burn(msg.sender, _value);
  return true;
}

burnFrom keyboard_arrow_up

Parameters help

Name Type
_from
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
function burnFrom(address _from, uint256 _value) public returns (bool success) {
  require(balanceOf[_from] >= _value);
  require(_value <= allowance[_from][msg.sender]);
  balanceOf[_from] -= _value;
  allowance[_from][msg.sender] -= _value;
  totalSupply -= _value;
  Burn(_from, _value);
  return true;
}

transferOwnership keyboard_arrow_up

Parameters help

Name Type
newOwner
address help

Properties

Visibility help public
Mutability help transaction
Source Code
function transferOwnership(address newOwner) public onlyOwner {
  owner = newOwner;
}

freezeAccount keyboard_arrow_up

Parameters help

Name Type
target
address help
freeze
bool help

Properties

Visibility help public
Mutability help transaction
Source Code
function freezeAccount(address target, bool freeze) public onlyOwner {
  frozenAccount[target] = freeze;
  FrozenFunds(target, freeze);
}

setPrices keyboard_arrow_up

Parameters help

Name Type
newSellPrice
uint256 help
newBuyPrice
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
function setPrices(uint256 newSellPrice, uint256 newBuyPrice) public onlyOwner {
  sellPrice = newSellPrice;
  buyPrice = newBuyPrice;
}

buy keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help payable

Requirements help

Source Code
function buy() public payable {
  uint256 amount = msg.value / buyPrice;
  _transfer(this, msg.sender, amount);
}

sell keyboard_arrow_up

Parameters help

Name Type
amount
uint256 help

Properties

Visibility help public
Mutability help transaction

Requirements help

Source Code
function sell(uint256 amount) public {
  require(this.balance >= amount * sellPrice);
  _transfer(msg.sender, this, amount);
  msg.sender.transfer(amount * sellPrice);
}

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.

internal HashCoin._transfer keyboard_arrow_up

Parameters help

Name Type
_from
address help
_to
address help
_value
uint help

Properties

Visibility help internal
Mutability help transaction

Requirements help

Source Code
function _transfer(
  address _from,
  address _to,
  uint256 _value
) internal {
  require(_to != 0x0);
  require(balanceOf[_from] >= _value);
  require(balanceOf[_to] + _value > balanceOf[_to]);
  require(!frozenAccount[_from]);
  require(!frozenAccount[_to]);
  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;
  Transfer(_from, _to, _value);
}

internal TokenERC20._transfer keyboard_arrow_up

Parameters help

Name Type
_from
address help
_to
address help
_value
uint help

Properties

Visibility help internal
Mutability help transaction

Requirements help

Source Code
function _transfer(
  address _from,
  address _to,
  uint256 _value
) internal {
  require(_to != 0x0);
  require(balanceOf[_from] >= _value);
  require(balanceOf[_to] + _value > balanceOf[_to]);
  uint256 previousBalances = balanceOf[_from] + balanceOf[_to];
  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;
  Transfer(_from, _to, _value);
  assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}