GMO JPY

0xc08512927d12348f6620a698105e1baac6ecd911 Copy

ERC20

This contract is an ERC20 token.

Name GMO JPY

Symbol GYEN

Decimals 6

Total Supply 2,231,321,096 GYEN

About

GYEN (GYEN) is a cryptocurrency and operates on the Ethereum platform. GYEN has a current supply of 2,231,321,096. The last known price of GYEN is 0.00918962 USD and is up 0.84 over the last 24 hours. It is currently trading on 8 active market(s) with $544,573.00 traded over the last 24 hours. More information can be found at https://stablecoin.z.com/.

Identical Contracts

The following contracts have identical source code.

Z.com USD (ZUSD) - 0xc56c2b7e71b54d38aab6d52e94a04cbfa8f604fa

Stats

Public Functions 26

Event Types 16

Code Size 25,584 bytes

Events (16)

AdminChanged Event

Parameters

oldAdmin	address
newAdmin	address
sender	address

Approval Event

Parameters

owner	address
spender	address
value	uint256

Burn Event

Parameters

burnee	address
amount	uint256
sender	address

Cap Event

Parameters

newCapacity	uint256
sender	address

CapperChanged Event

Parameters

oldCapper	address
newCapper	address
sender	address

Mint Event

Parameters

mintee	address
amount	uint256
sender	address

MinterAdminChanged Event

Parameters

oldMinterAdmin	address
newMinterAdmin	address
sender	address

MinterChanged Event

Parameters

oldMinter	address
newMinter	address
sender	address

OwnerChanged Event

Parameters

oldOwner	address
newOwner	address
sender	address

Pause Event

Parameters

status	bool
sender	address

PauserChanged Event

Parameters

oldPauser	address
newPauser	address
sender	address

ProhibiterChanged Event

Parameters

oldProhibiter	address
newProhibiter	address
sender	address

Prohibition Event

Parameters

prohibited	address
status	bool
sender	address

Transfer Event

Parameters

from	address
to	address
value	uint256

Wipe Event

Parameters

addr	address
amount	uint256

WiperChanged Event

Parameters

oldWiper	address
newWiper	address
sender	address

State Variables (20)

name Variable

string

symbol Variable

string

decimals Variable

uint8

owner Variable

address

admin Variable

address

capacity Variable

uint256

capper Variable

address

prohibiter Variable

address

pauser Variable

address

paused Variable

bool

minterAdmin Variable

address

minter Variable

address

wiper Variable

address

prohibiteds Variable

mapping(address => bool)

initialized Variable

bool

Internal Variable

initializing Variable

bool

Internal Variable

______gap Variable

uint256[]

Internal Variable

_balances Variable

mapping(address => uint256)

Internal Variable

_allowances Variable

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

Internal Variable

_totalSupply Variable

uint256

Internal Variable

Functions Expand All Collapse All

initializeWiper

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Requirements

wiper must be equal to UNKNOWN VALUE

Source Code

function initializeWiper(address _account) public isNotZeroAddress(_account) {
  require(wiper == address(0), "the wiper can only be initiated once");
  wiper = _account;
}

pause

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyPauser checks for the following:

pauser must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

Source Code

function pause() public onlyPauser whenNotPaused {
  paused = true;
  emit Pause(paused, msg.sender);
}

unpause

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyPauser checks for the following:

pauser must be equal to the sender's address

whenPaused checks for the following:

paused must be true

Source Code

function unpause() public onlyPauser whenPaused {
  paused = false;
  emit Pause(paused, msg.sender);
}

changeMinter

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinterAdmin checks for the following:

minterAdmin must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeMinter(address _account)
  public
  onlyMinterAdmin
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = minter;
  minter = _account;
  emit MinterChanged(old, minter, msg.sender);
}

prohibit

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyProhibiter checks for the following:

prohibiter must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

onlyNotProhibited checks for the following:

prohibiteds for _account must not be true

Source Code

function prohibit(address _account)
  public
  onlyProhibiter
  whenNotPaused
  isNotZeroAddress(_account)
  onlyNotProhibited(_account)
{
  prohibiteds[_account] = true;
  emit Prohibition(_account, prohibiteds[_account], msg.sender);
}

unprohibit

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyProhibiter checks for the following:

prohibiter must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

onlyProhibited checks for the following:

Source Code

function unprohibit(address _account)
  public
  onlyProhibiter
  whenNotPaused
  isNotZeroAddress(_account)
  onlyProhibited(_account)
{
  prohibiteds[_account] = false;
  emit Prohibition(_account, prohibiteds[_account], msg.sender);
}

changeCapper

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyAdmin checks for the following:

admin must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeCapper(address _account)
  public
  onlyAdmin
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = capper;
  capper = _account;
  emit CapperChanged(old, capper, msg.sender);
}

changePauser

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyAdmin checks for the following:

admin must be equal to the sender's address

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changePauser(address _account)
  public
  onlyAdmin
  isNotZeroAddress(_account)
{
  address old = pauser;
  pauser = _account;
  emit PauserChanged(old, pauser, msg.sender);
}

changeProhibiter

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyAdmin checks for the following:

admin must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeProhibiter(address _account)
  public
  onlyAdmin
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = prohibiter;
  prohibiter = _account;
  emit ProhibiterChanged(old, prohibiter, msg.sender);
}

changeOwner

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeOwner(address _account)
  public
  onlyOwner
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = owner;
  owner = _account;
  emit OwnerChanged(old, owner, msg.sender);
}

changeAdmin

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeAdmin(address _account)
  public
  onlyOwner
  isNotZeroAddress(_account)
{
  address old = admin;
  admin = _account;
  emit AdminChanged(old, admin, msg.sender);
}

changeMinterAdmin

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeMinterAdmin(address _account)
  public
  onlyOwner
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = minterAdmin;
  minterAdmin = _account;
  emit MinterAdminChanged(old, minterAdmin, msg.sender);
}

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
account	address

Properties

Visibility public

Mutability view

Source Code

function balanceOf(address account) public view returns (uint256) {
  return _balances[account];
}

transfer

Parameters

Name	Type
_recipient	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

whenNotPaused checks for the following:

paused must not be true

onlyNotProhibited checks for the following:

prohibiteds for the sender's address must not be true

isNaturalNumber checks for the following:

_amount must be greater than 0

Requirements

the sender's address must not be equal to UNKNOWN VALUE

_recipient must not be equal to UNKNOWN VALUE

Source Code

function transfer(address _recipient, uint256 _amount)
  public
  whenNotPaused
  onlyNotProhibited(msg.sender)
  isNaturalNumber(_amount)
  returns (bool)
{
  _transfer(msg.sender, _recipient, _amount);
  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 _allowances[owner][spender];
}

approve

Parameters

Name	Type
spender	address
value	uint256

Properties

Visibility public

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

function approve(address spender, uint256 value) public returns (bool) {
  _approve(msg.sender, spender, value);
  return true;
}

transferFrom

Parameters

Name	Type
_sender	address
_recipient	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

whenNotPaused checks for the following:

paused must not be true

onlyNotProhibited checks for the following:

prohibiteds for the sender's address must not be true

isNaturalNumber checks for the following:

_amount must be greater than 0

Requirements

the sender's address must not be equal to UNKNOWN VALUE

_recipient must not be equal to UNKNOWN VALUE

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address _sender,
  address _recipient,
  uint256 _amount
)
  public
  whenNotPaused
  onlyNotProhibited(_sender)
  isNaturalNumber(_amount)
  returns (bool)
{
  return super.transferFrom(_sender, _recipient, _amount);
}

increaseAllowance

Parameters

Name	Type
spender	address
addedValue	uint256

Properties

Visibility public

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function increaseAllowance(address spender, uint256 addedValue)
  public
  returns (bool)
{
  _approve(
    msg.sender,
    spender,
    _allowances[msg.sender][spender].add(addedValue)
  );
  return true;
}

decreaseAllowance

Parameters

Name	Type
spender	address
subtractedValue	uint256

Properties

Visibility public

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function decreaseAllowance(address spender, uint256 subtractedValue)
  public
  returns (bool)
{
  _approve(
    msg.sender,
    spender,
    _allowances[msg.sender][spender].sub(subtractedValue)
  );
  return true;
}

initialize

Parameters

Name	Type
_name	string
_symbol	string
_decimals	uint8
_owner	address
_admin	address
_capper	address
_prohibiter	address
_pauser	address
_minterAdmin	address
_minter	address

Properties

Visibility public

Mutability transaction

Modifiers

initializer checks for the following:

One or more of the following: -initialized must not be true - ORnull - ORinitializing must be true

Requirements

_owner must not be equal to UNKNOWN VALUE

_admin must not be equal to UNKNOWN VALUE

_capper must not be equal to UNKNOWN VALUE

_prohibiter must not be equal to UNKNOWN VALUE

_pauser must not be equal to UNKNOWN VALUE

_minterAdmin must not be equal to UNKNOWN VALUE

_minter must not be equal to UNKNOWN VALUE

Source Code

function initialize(
  string memory _name,
  string memory _symbol,
  uint8 _decimals,
  address _owner,
  address _admin,
  address _capper,
  address _prohibiter,
  address _pauser,
  address _minterAdmin,
  address _minter
) public initializer {
  require(_owner != address(0), "_owner is the zero address");
  require(_admin != address(0), "_admin is the zero address");
  require(_capper != address(0), "_capper is the zero address");
  require(_prohibiter != address(0), "_prohibiter is the zero address");
  require(_pauser != address(0), "_pauser is the zero address");
  require(_minterAdmin != address(0), "_minterAdmin is the zero address");
  require(_minter != address(0), "_minter is the zero address");
  name = _name;
  symbol = _symbol;
  decimals = _decimals;
  owner = _owner;
  admin = _admin;
  capper = _capper;
  prohibiter = _prohibiter;
  pauser = _pauser;
  minterAdmin = _minterAdmin;
  minter = _minter;
}

cap

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyCapper checks for the following:

capper must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNaturalNumber checks for the following:

_amount must be greater than 0

Requirements

_amount must be greater than or equal to the result of calling totalSupply

Source Code

function cap(uint256 _amount)
  public
  onlyCapper
  whenNotPaused
  isNaturalNumber(_amount)
{
  require(
    totalSupply() <= _amount,
    "this amount is less than the totalySupply"
  );
  _cap(_amount);
}

mint

Parameters

Name	Type
_account	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinter checks for the following:

minter must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

notMoreThanCapacity checks for the following:

capacity must be greater than or equal to UNKNOWN VALUE

isNaturalNumber checks for the following:

_amount must be greater than 0

Requirements

_account must not be equal to UNKNOWN VALUE

Source Code

function mint(address _account, uint256 _amount)
  public
  onlyMinter
  whenNotPaused
  notMoreThanCapacity(totalSupply().add(_amount))
  isNaturalNumber(_amount)
{
  _mint(_account, _amount);
  emit Mint(_account, _amount, msg.sender);
}

burn

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isNaturalNumber checks for the following:

_amount must be greater than 0

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function burn(uint256 _amount) public isNaturalNumber(_amount) {
  _burn(msg.sender, _amount);
  emit Burn(msg.sender, _amount, msg.sender);
}

changeWiper

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyAdmin checks for the following:

admin must be equal to the sender's address

whenNotPaused checks for the following:

paused must not be true

isNotZeroAddress checks for the following:

_account must not be equal to UNKNOWN VALUE

Source Code

function changeWiper(address _account)
  public
  onlyAdmin
  whenNotPaused
  isNotZeroAddress(_account)
{
  address old = wiper;
  wiper = _account;
  emit WiperChanged(old, wiper, msg.sender);
}

wipe

Parameters

Name	Type
_account	address

Properties

Visibility public

Mutability transaction

Modifiers

whenNotPaused checks for the following:

paused must not be true

onlyWiper checks for the following:

wiper must be equal to the sender's address

onlyProhibited checks for the following:

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function wipe(address _account)
  public
  whenNotPaused
  onlyWiper
  onlyProhibited(_account)
{
  uint256 _balance = balanceOf(_account);
  _burn(_account, _balance);
  emit Wipe(_account, _balance);
}

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 Initializable.isConstructor

Parameters

This function has no parameters.

Properties

Visibility private

Mutability view

Source Code

function isConstructor() private view returns (bool) {
  // extcodesize checks the size of the code stored in an address, and
  // address returns the current address. Since the code is still not
  // deployed when running a constructor, any checks on its code size will
  // yield zero, making it an effective way to detect if a contract is
  // under construction or not.
  uint256 cs;
  assembly {
    cs := extcodesize(address)
  }
  return cs == 0;
}

internal ERC20._transfer

Parameters

Name	Type
sender	address
recipient	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

_recipient must not be equal to UNKNOWN VALUE

Source Code

function _transfer(
  address sender,
  address recipient,
  uint256 amount
) internal {
  require(sender != address(0), "ERC20: transfer from the zero address");
  require(recipient != address(0), "ERC20: transfer to the zero address");

  _balances[sender] = _balances[sender].sub(amount);
  _balances[recipient] = _balances[recipient].add(amount);
  emit Transfer(sender, recipient, amount);
}

internal ERC20._mint

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

_account must not be equal to UNKNOWN VALUE

Source Code

function _mint(address account, uint256 amount) internal {
  require(account != address(0), "ERC20: mint to the zero address");

  _totalSupply = _totalSupply.add(amount);
  _balances[account] = _balances[account].add(amount);
  emit Transfer(address(0), account, amount);
}

internal ERC20._burn

Parameters

Name	Type
account	address
value	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function _burn(address account, uint256 value) internal {
  require(account != address(0), "ERC20: burn from the zero address");

  _totalSupply = _totalSupply.sub(value);
  _balances[account] = _balances[account].sub(value);
  emit Transfer(account, address(0), value);
}

internal ERC20._approve

Parameters

Name	Type
owner	address
spender	address
value	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function _approve(
  address owner,
  address spender,
  uint256 value
) internal {
  require(owner != address(0), "ERC20: approve from the zero address");
  require(spender != address(0), "ERC20: approve to the zero address");

  _allowances[owner][spender] = value;
  emit Approval(owner, spender, value);
}

internal ERC20._burnFrom

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the sender's address must not be equal to UNKNOWN VALUE

Source Code

function _burnFrom(address account, uint256 amount) internal {
  _burn(account, amount);
  _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount));
}

internal Capper._cap

Parameters

Name	Type
_amount	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function _cap(uint256 _amount) internal {
  capacity = _amount;
  emit Cap(capacity, msg.sender);
}

GMO JPY

ERC20

About link description

Identical Contracts

Stats

Events (16) keyboard_arrow_up

AdminChanged Event

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

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.

Cap Event

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

CapperChanged Event

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

Mint Event

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

MinterAdminChanged Event

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

MinterChanged Event

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

OwnerChanged Event

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

Pause Event

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

PauserChanged Event

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

ProhibiterChanged Event

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

Prohibition 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.

Wipe Event

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

WiperChanged Event

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

State Variables (20) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

owner Variable

admin Variable

capacity Variable

capper Variable

prohibiter Variable

pauser Variable

paused Variable

minterAdmin Variable

minter Variable

wiper Variable

prohibiteds Variable

initialized Variable

initializing Variable

______gap Variable

_balances Variable

_allowances Variable

_totalSupply Variable

Functions Expand All Collapse All

initializeWiper 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.

isNotZeroAddress 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

pause 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.

onlyPauser checks for the following:

whenNotPaused checks for the following:

Source Code

unpause 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.

onlyPauser checks for the following:

whenPaused checks for the following:

About

Events (16)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

State Variables (20)

initializeWiper

Parameters

Modifiers

Requirements

pause

Parameters

Modifiers

unpause

Parameters

Modifiers

changeMinter

Parameters

Modifiers

prohibit

Parameters

Modifiers

unprohibit

Parameters

Modifiers

changeCapper

Parameters

Modifiers

changePauser

Parameters

Modifiers

changeProhibiter

Parameters

Modifiers

changeOwner

Parameters

Modifiers

changeAdmin

Parameters

Modifiers

changeMinterAdmin

Parameters

Modifiers