Genesis Vision Token

0x103c3a209da59d3e7c4a89307e66521e081cfdf0 Copy

ERC20

This contract is an ERC20 token.

Name Genesis Vision Token

Symbol GVT

Decimals 18

Total Supply 4,436,644 GVT

About

Genesis Vision (GVT) is a cryptocurrency and operates on the Ethereum platform. Genesis Vision has a current supply of 4,436,643.92853333 with 4,426,883.31189056 in circulation. The last known price of Genesis Vision is 2.27173093 USD and is down -0.95 over the last 24 hours. It is currently trading on 7 active market(s) with $256,542.36 traded over the last 24 hours. More information can be found at https://genesis.vision/.

Stats

Public Functions 13

Event Types 3

Code Size 7,871 bytes

Events (3)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Migrate Event

Parameters

_from	address
_to	address
_value	uint

Transfer Event

Parameters

from	address
to	address
value	uint256

Constants (4)

name Constant

string

Genesis Vision Token

symbol Constant

string

GVT

decimals Constant

uint

TOKEN_LIMIT Constant

uint

44 * 1e6 * 1e18

State Variables (8)

ico Variable

address

isFrozen Variable

bool

migrationMaster Variable

address

migrationAgent Variable

address

totalMigrated Variable

uint

totalSupply Variable

uint256

allowed Variable

mapping(address => mapping(address => uint256))

Internal Variable

balances Variable

mapping(address => uint256)

Internal Variable

Functions Expand All Collapse All

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

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

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transfer(address _to, uint256 _value) returns (bool) {
  balances[msg.sender] = balances[msg.sender].sub(_value);
  balances[_to] = balances[_to].add(_value);
  Transfer(msg.sender, _to, _value);
  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) returns (bool) {
  var _allowance = allowed[_from][msg.sender];

  // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
  // require (_value <= _allowance);

  balances[_to] = balances[_to].add(_value);
  balances[_from] = balances[_from].sub(_value);
  allowed[_from][msg.sender] = _allowance.sub(_value);
  Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

One or more of the following:

Source Code

function approve(address _spender, uint256 _value) returns (bool) {
  // To change the approve amount you first have to reduce the addresses`
  //  allowance to zero by calling `approve(_spender, 0)` if it is not
  //  already 0 to mitigate the race condition described here:
  //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
  require((_value == 0) || (allowed[msg.sender][_spender] == 0));

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

mint

Parameters

Name	Type
holder	address
value	uint

Properties

Visibility public

Mutability transaction

Requirements

ico must be equal to the sender's address

value must be greater than 0

TOKEN_LIMIT must be greater than or equal to totalSupply + value

Source Code

function mint(address holder, uint256 value) {
  require(msg.sender == ico);
  require(value > 0);
  require(totalSupply + value <= TOKEN_LIMIT);

  balances[holder] += value;
  totalSupply += value;
  Transfer(0x0, holder, value);
}

unfreeze

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Requirements

ico must be equal to the sender's address

Source Code

function unfreeze() {
  require(msg.sender == ico);
  isFrozen = false;
}

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Requirements

_to must not be equal to UNKNOWN VALUE

isFrozen must not be true

Source Code

function transfer(address _to, uint256 _value) public returns (bool) {
  require(_to != address(0));
  require(!isFrozen);
  return super.transfer(_to, _value);
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Requirements

isFrozen must not be true

Source Code

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

approve

Parameters

Name	Type
_spender	address
_value	uint

Properties

Visibility public

Mutability transaction

Requirements

isFrozen must not be true

One or more of the following:

Source Code

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

migrate

Parameters

Name	Type
value	uint

Properties

Visibility public

Mutability transaction

Requirements

migrationAgent must not be equal to 0

value must be greater than 0

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

Source Code

function migrate(uint256 value) external {
  require(migrationAgent != 0);
  require(value > 0);
  require(value <= balances[msg.sender]);

  balances[msg.sender] -= value;
  totalSupply -= value;
  totalMigrated += value;
  MigrationAgent(migrationAgent).migrateFrom(msg.sender, value);
  Migrate(msg.sender, migrationAgent, value);
}

setMigrationAgent

Parameters

Name	Type
_agent	address

Properties

Visibility public

Mutability transaction

Requirements

migrationAgent must be equal to 0

migrationMaster must be equal to the sender's address

Source Code

function setMigrationAgent(address _agent) external {
  require(migrationAgent == 0);
  require(msg.sender == migrationMaster);
  migrationAgent = _agent;
}

setMigrationMaster

Parameters

Name	Type
_master	address

Properties

Visibility public

Mutability transaction

Requirements

migrationMaster must be equal to the sender's address

_master must not be equal to 0

Source Code

function setMigrationMaster(address _master) external {
  require(msg.sender == migrationMaster);
  require(_master != 0);
  migrationMaster = _master;
}

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.

Genesis Vision Token

ERC20

About link description

Stats

Events (3) keyboard_arrow_up

Approval Event

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

Migrate 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.

Constants (4) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

TOKEN_LIMIT Constant

State Variables (8) keyboard_arrow_up

ico Variable

isFrozen Variable

migrationMaster Variable

migrationAgent Variable

totalMigrated Variable

totalSupply Variable

allowed Variable

balances Variable

Functions Expand All Collapse All

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

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

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

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

mint 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

unfreeze 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

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

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

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

migrate 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

setMigrationAgent 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 (3)

Parameters

Parameters

Parameters

Constants (4)

State Variables (8)

balanceOf

Parameters

transfer

Parameters

allowance

Parameters

transferFrom

Parameters

approve

Parameters

Requirements

mint

Parameters

Requirements

unfreeze

Parameters

Requirements

transfer

Parameters

Requirements

transferFrom

Parameters

Requirements

approve

Parameters

Requirements

migrate

Parameters

Requirements

setMigrationAgent

Parameters

Requirements

setMigrationMaster

Parameters

Requirements