Blockwell

UltrainGas

ERC20

This contract is an ERC20 token.

Name UltrainGas
Symbol UGAS
Decimals 18
Total Supply 1,000,000,000 UGAS

About link

Ultrain bills itself as a high-performance decentralized blockchain platform. Ultrain aims to construct a sustainable commercial ecosystem that enables industrial applications. The team claims that Ultrain is able to solve the performance and scalability issues in traditional public blockchain platforms by providing a multifold increase in performance. Founded by former tech leads from Alibaba and Ant Financial Blockchain, Ultrain's core team reportedly includes 40 developers from Alibaba, Ant Financial, Google, and Huawei. The team claims that its proprietary RPOS consensus algorithm, smart contract/developer framework, and customizable privacy solutions(zkp) makes Ultrain a cost-effective solution that offers customization and ease of use. As of 15 Apr 2019, Ultrain released its main-net and aims to be the top commercial public-chain globally across multiple verticals such as supply chain, media, retail, and healthcare.

Stats

Public Functions 15
Event Types 5
Code Size 10,442 bytes

Approval Event

Parameters help
owner
address help
spender
address help
value
uint256 help

Close Event

Parameters help

Open 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

Functions Expand All Collapse All

transferOwnership keyboard_arrow_up

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));
    emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

totalSupply keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help view
Source Code
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

balanceOf keyboard_arrow_up

Parameters help

Name Type
_owner
address help

Properties

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

transfer keyboard_arrow_up

Parameters help

Name Type
_to
address help
_value
uint256 help

Properties

Visibility help public
Mutability help transaction
Source Code
  function transfer(address _to, uint256 _value) public 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;
  }

allowance keyboard_arrow_up

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];
  }

transferFrom keyboard_arrow_up

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) {
    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;
  }

approve keyboard_arrow_up

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

increaseApproval keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_addedValue
uint help

Properties

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

decreaseApproval keyboard_arrow_up

Parameters help

Name Type
_spender
address help
_subtractedValue
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

constructor keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

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

transfer keyboard_arrow_up

Parameters help

Name Type
_to
address help
_value
uint help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Source Code
    function transfer(address _to, uint _value) whenOpen public returns (bool) {
        return super.transfer(_to, _value);
    }

transferFrom keyboard_arrow_up

Parameters help

Name Type
_from
address help
_to
address help
_value
uint help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Requirements help

Source Code
    function transferFrom(address _from, address _to, uint _value) whenOpen public returns (bool) {
        return super.transferFrom(_from, _to, _value);
    }

register keyboard_arrow_up

Parameters help

Name Type
key
string help

Properties

Visibility help public
Mutability help transaction

Modifiers help

Requirements help

Source Code
    function register(string key) whenOpen {
        assert(bytes(key).length <= 64);
        keys[msg.sender] = key;
    }

close keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help transaction
Source Code
    function close() onlyOwner whenOpen public {
        closed = true;
        emit Close();
    }

open keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help transaction
Source Code
    function open() onlyOwner whenClosed public {
        closed = false;
        emit Open();
    }