Measurable Data Token

0x814e0908b12a99fecf5bc101bb5d0b8b5cdf7d26 Copy

ERC20

This contract is an ERC20 token.

Name Measurable Data Token

Symbol MDT

Decimals 18

Total Supply 1,000,000,000 MDT

About

Measurable Data Token (MDT) aims to provide a blockchain-based data economy, where data providers and data buyers can exchange data securely and anonymously. The MDT ecosystem now features two products with real use cases: MyMDT Data Wallet is a decentralized application based on Ethereum that allows users to get rewards for sharing anonymous data points. The application has been integrated with the following apps: MailTime, Magic Crystal, and Email Messenger. Measurable AI, MDT's data analytics branch, is an alternative data provider that turns anonymous transactional data into consumer insights serving financial institutions and corporates. The MDT token is an ERC-20 token, used as the medium of exchange for data product access and user reward programs. The MDT team are based in Hong Kong and have been working together for over 10 years. Their first project Talkbox started in 2010 was adapted into a TV show and novel called "Entrepreneurial Age". In their roadmap, the team will be focusing on connecting more users and data providers to expand the scenarios in the ecosystem. They are also working on more new applications on Ethereum featuring data rewards for individual users. Since the launch of MDT project in 2017, the team has been dedicated to make MDT the new standard for data sharing.

Stats

Public Functions 15

Event Types 5

Code Size 17,004 bytes

Library Use

Uses SafeMath for uint256.

Events (5)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

Burn Event

Parameters

_burner	address
_value	uint256

ERC677Transfer Event

Parameters

_from	address
_to	address
_value	uint256
_data	bytes

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

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

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

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function transfer(address _to, uint256 _value)
        public
        validRecipient(_to)
        returns (bool)
    {
        return super.transfer(_to, _value);
    }

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Requirements

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function transferFrom(address _from, address _to, uint256 _value)
        public
        validRecipient(_to)
        returns (bool)
    {
        return super.transferFrom(_from, _to, _value);
    }

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Requirements

One or more of the following:

Source Code

    function approve(address _spender, uint256 _value)
        public
        validRecipient(_spender)
        returns (bool)
    {
        return super.approve(_spender, _value);
    }

transferAndCall

Parameters

Name	Type
_to	address
_value	uint256
_data	bytes

Properties

Visibility public

Mutability transaction

Modifiers

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function transferAndCall(address _to, uint256 _value, bytes _data)
        public
        validRecipient(_to)
        returns (bool success)
    {
        return super.transferAndCall(_to, _value, _data);
    }

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

    function burn(uint256 _value)
        public
        onlyOwner
        returns (bool)
    {
        balances[msg.sender] = balances[msg.sender].sub(_value);
        totalSupply = totalSupply.sub(_value);
        Burn(msg.sender, _value);
        return true;
    }

burnFrom

Parameters

Name	Type
_from	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

    function burnFrom(address _from, uint256 _value)
        public
        onlyOwner
        returns(bool)
    {
        var _allowance = allowed[_from][msg.sender];
        balances[_from] = balances[_from].sub(_value);
        allowed[_from][msg.sender] = _allowance.sub(_value);
        totalSupply = totalSupply.sub(_value);
        Burn(_from, _value);
        return true;
    }

emergencyERC20Drain

Parameters

Name	Type
token	ERC20
amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

    function emergencyERC20Drain(ERC20 token, uint256 amount)
        public
        onlyOwner
    {
        token.transfer(owner, amount);
    }

changeTokenSaleAddress

Parameters

Name	Type
_tokenSaleAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function changeTokenSaleAddress(address _tokenSaleAddress)
        public
        onlyOwner
        validRecipient(_tokenSaleAddress)
    {
        tokenSaleAddress = _tokenSaleAddress;
    }

changeMdtTeamAddress

Parameters

Name	Type
_mdtTeamAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function changeMdtTeamAddress(address _mdtTeamAddress)
        public
        onlyOwner
        validRecipient(_mdtTeamAddress)
    {
        mdtTeamAddress = _mdtTeamAddress;
    }

changeUserGrowthAddress

Parameters

Name	Type
_userGrowthAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function changeUserGrowthAddress(address _userGrowthAddress)
        public
        onlyOwner
        validRecipient(_userGrowthAddress)
    {
        userGrowthAddress = _userGrowthAddress;
    }

changeInvestorsAddress

Parameters

Name	Type
_investorsAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function changeInvestorsAddress(address _investorsAddress)
        public
        onlyOwner
        validRecipient(_investorsAddress)
    {
        investorsAddress = _investorsAddress;
    }

changeMdtFoundationAddress

Parameters

Name	Type
_mdtFoundationAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

validRecipient checks for the following:

_to must not be equal to the address for this contract

_to must not be equal to 0x0000000000000000000000000000000000000000

Source Code

    function changeMdtFoundationAddress(address _mdtFoundationAddress)
        public
        onlyOwner
        validRecipient(_mdtFoundationAddress)
    {
        mdtFoundationAddress = _mdtFoundationAddress;
    }

Measurable Data Token

ERC20

About link description

Stats

Library Use

Events (5) keyboard_arrow_up

Approval Event

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

Burn Event

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

ERC677Transfer 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

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

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

validRecipient 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

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

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

validRecipient 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

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

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

validRecipient 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

transferAndCall 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.

validRecipient checks for the following:

Source Code

burn 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:

Source Code

burnFrom 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:

Source Code

emergencyERC20Drain 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:

Source Code

changeTokenSaleAddress keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

About

Events (5)

Parameters

Parameters

Parameters

Parameters

Parameters

transferOwnership

Parameters

Modifiers

Requirements

balanceOf

Parameters

transfer

Parameters

Modifiers

Requirements

allowance

Parameters

transferFrom

Parameters

Modifiers

Requirements

approve

Parameters

Modifiers

Requirements

transferAndCall

Parameters

Modifiers

burn

Parameters

Modifiers

burnFrom

Parameters

Modifiers

emergencyERC20Drain

Parameters

Modifiers

changeTokenSaleAddress

Parameters

Modifiers

changeMdtTeamAddress

Parameters

Modifiers

changeUserGrowthAddress

Parameters

Modifiers

changeInvestorsAddress

Parameters

Modifiers

changeMdtFoundationAddress

Parameters

Modifiers