UltrainGas

0x8716fc5da009d3a208f0178b637a50f4ef42400f Copy

ERC20

This contract is an ERC20 token.

Name UltrainGas

Symbol UGAS

Decimals 18

Total Supply 1,000,000,000 UGAS

About

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

Events (5)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Close Event

Parameters

Open Event

Parameters

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

Transfer Event

Parameters

from	address
to	address
value	uint256

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

Requirements

newOwner must not be equal to 0x0000000000000000000000000000000000000000

Source Code

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

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability view

Source Code

  function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
  }

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

_value must be less than or equal to balances for the sender's address

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

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability view

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

_value must be less than or equal to balances for _from

_value must be less than or equal to allowed for _from for the sender's address

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

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability 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

Parameters

Name	Type
_spender	address
_addedValue	uint

Properties

Visibility public

Mutability 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

Parameters

Name	Type
_spender	address
_subtractedValue	uint

Properties

Visibility public

Mutability 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

Parameters

This function has no parameters.

Properties

Visibility public

Mutability payable

Source Code

    function() public payable {
        revert();
    }

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

whenOpen checks for the following:

closed must not be true

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

_value must be less than or equal to balances for the sender's address

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

whenOpen checks for the following:

closed must not be true

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

_value must be less than or equal to balances for _from

_value must be less than or equal to allowed for _from for the sender's address

Source Code

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

register

Parameters

Name	Type
key	string

Properties

Visibility public

Mutability transaction

Modifiers

whenOpen checks for the following:

closed must not be true

Requirements

the number of values in undefined must be less than or equal to 64

Source Code

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

close

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

whenOpen checks for the following:

closed must not be true

Source Code

    function close() onlyOwner whenOpen public {
        closed = true;
        emit Close();
    }

open

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

whenClosed checks for the following:

closed must be true

Source Code

    function open() onlyOwner whenClosed public {
        closed = false;
        emit Open();
    }

UltrainGas

ERC20

About link

Stats

Events (5) keyboard_arrow_up

Approval Event

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

Close Event

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

Open Event

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

OwnershipTransferred 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.

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:

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

totalSupply 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

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

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

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

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

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

Source Code

increaseApproval 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

decreaseApproval 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

constructor 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

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

whenOpen 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

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.

whenOpen 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

register 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.

whenOpen checks for the following:

About

Events (5)

Parameters

Parameters

Parameters

Parameters

Parameters

transferOwnership

Parameters

Modifiers

Requirements

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

allowance

Parameters

transferFrom

Parameters

Requirements

approve

Parameters

increaseApproval

Parameters

decreaseApproval

Parameters

constructor

Parameters

transfer

Parameters

Modifiers

Requirements

transferFrom

Parameters

Modifiers

Requirements

register

Parameters

Modifiers

Requirements

close

Parameters

Modifiers

open

Parameters

Modifiers