Golem Network Token

0x7dd9c5cba05e151c895fde1cf355c9a1d5da6429 Copy

ERC20

This contract is an ERC20 token.

Name Golem Network Token

Symbol GLM

Decimals 18

Total Supply 510,647,147 GLM

About

Golem (GLM) is a cryptocurrency and operates on the Ethereum platform. Golem has a current supply of 1,000,000,000. The last known price of Golem is 0.28844978 USD and is down -0.86 over the last 24 hours. It is currently trading on 46 active market(s) with $6,787,932.73 traded over the last 24 hours. More information can be found at https://golem.network/.

Stats

Public Functions 13

Event Types 4

Code Size 22,707 bytes

Events (4)

Approval Event

Parameters

owner	address
spender	address
value	uint256

MinterAdded Event

Parameters

account

address

MinterRemoved Event

Parameters

account

address

Transfer Event

Parameters

from	address
to	address
value	uint256

Constants (2)

version Constant

string

PERMIT_TYPEHASH Constant

bytes32

0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb

State Variables (9)

name Variable

string

symbol Variable

string

decimals Variable

uint8

DOMAIN_SEPARATOR Variable

bytes32

nonces Variable

mapping(address => uint)

_balances Variable

mapping(address => uint256)

Internal Variable

_allowances Variable

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

Internal Variable

_totalSupply Variable

uint256

Internal Variable

_minters Variable

Roles.Role

Internal Variable

Functions Expand All Collapse All

isMinter

Parameters

Name	Type
account	address

Properties

Visibility public

Mutability view

Source Code

function isMinter(address account) public view returns (bool) {
  return _minters.has(account);
}

addMinter

Parameters

Name	Type
account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinter checks for the following:

null

Source Code

function addMinter(address account) public onlyMinter {
  _addMinter(account);
}

renounceMinter

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Source Code

function renounceMinter() public {
  _removeMinter(_msgSender());
}

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

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

recipient must not be equal to UNKNOWN VALUE

Source Code

function transfer(address recipient, uint256 amount) public returns (bool) {
  _transfer(_msgSender(), 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
amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

function approve(address spender, uint256 amount) public returns (bool) {
  _approve(_msgSender(), spender, amount);
  return true;
}

transferFrom

Parameters

Name	Type
sender	address
recipient	address
amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

recipient must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address sender,
  address recipient,
  uint256 amount
) public returns (bool) {
  _transfer(sender, recipient, amount);
  if (sender != msg.sender && allowance(sender, msg.sender) != uint256(-1)) {
    _approve(
      sender,
      msg.sender,
      allowance(sender, msg.sender).sub(
        amount,
        "ERC20: transfer amount exceeds allowance"
      )
    );
  }
  return true;
}

increaseAllowance

Parameters

Name	Type
spender	address
addedValue	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

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

decreaseAllowance

Parameters

Name	Type
spender	address
subtractedValue	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

function decreaseAllowance(address spender, uint256 subtractedValue)
  public
  returns (bool)
{
  _approve(
    _msgSender(),
    spender,
    _allowances[_msgSender()][spender].sub(
      subtractedValue,
      "ERC20: decreased allowance below zero"
    )
  );
  return true;
}

mint

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinter checks for the following:

null

Requirements

account must not be equal to UNKNOWN VALUE

Source Code

function mint(address account, uint256 amount)
  public
  onlyMinter
  returns (bool)
{
  _mint(account, amount);
  return true;
}

permit

Parameters

Name	Type
holder	address
spender	address
nonce	uint256
expiry	uint256
allowed	bool
v	uint8
r	bytes32
s	bytes32

Properties

Visibility public

Mutability transaction

Requirements

holder must not be equal to UNKNOWN VALUE

holder must be equal to the result of calling ecrecover with digest, v, r, s

One or more of the following: - now must be less than or equal to expiry - OR expiry must be equal to 0

nonce must be equal to UNKNOWN VALUE

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

function permit(
  address holder,
  address spender,
  uint256 nonce,
  uint256 expiry,
  bool allowed,
  uint8 v,
  bytes32 r,
  bytes32 s
) external {
  bytes32 digest = keccak256(
    abi.encodePacked(
      "\x19\x01",
      DOMAIN_SEPARATOR,
      keccak256(
        abi.encode(PERMIT_TYPEHASH, holder, spender, nonce, expiry, allowed)
      )
    )
  );

  require(holder != address(0), "Ngnt/invalid-address-0");
  require(holder == ecrecover(digest, v, r, s), "Ngnt/invalid-permit");
  require(expiry == 0 || now <= expiry, "Ngnt/permit-expired");
  require(nonce == nonces[holder]++, "Ngnt/invalid-nonce");
  uint256 wad = allowed ? uint256(-1) : 0;
  _approve(holder, spender, wad);
}

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 ERC20._transfer

Parameters

Name	Type
sender	address
recipient	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the result of calling _msgSender 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,
    "ERC20: transfer amount exceeds balance"
  );
  _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
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

account must not be equal to UNKNOWN VALUE

Source Code

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

  _balances[account] = _balances[account].sub(
    amount,
    "ERC20: burn amount exceeds balance"
  );
  _totalSupply = _totalSupply.sub(amount);
  emit Transfer(account, address(0), amount);
}

internal ERC20._approve

Parameters

Name	Type
owner	address
spender	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

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

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

internal ERC20._burnFrom

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

account must not be equal to UNKNOWN VALUE

the result of calling _msgSender must not be equal to UNKNOWN VALUE

Source Code

function _burnFrom(address account, uint256 amount) internal {
  _burn(account, amount);
  _approve(
    account,
    _msgSender(),
    _allowances[account][_msgSender()].sub(
      amount,
      "ERC20: burn amount exceeds allowance"
    )
  );
}

internal Context.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Source Code

constructor() internal {}

internal Context._msgSender

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgSender() internal view returns (address payable) {
  return msg.sender;
}

internal Context._msgData

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgData() internal view returns (bytes memory) {
  this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
  return msg.data;
}

internal MinterRole.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Source Code

constructor() internal {
  _addMinter(_msgSender());
}

internal MinterRole._addMinter

Parameters

Name	Type
account	address

Properties

Visibility internal

Mutability transaction

Source Code

function _addMinter(address account) internal {
  _minters.add(account);
  emit MinterAdded(account);
}

internal MinterRole._removeMinter

Parameters

Name	Type
account	address

Properties

Visibility internal

Mutability transaction

Source Code

function _removeMinter(address account) internal {
  _minters.remove(account);
  emit MinterRemoved(account);
}

internal Context.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Source Code

constructor() internal {}

internal Context._msgSender

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgSender() internal view returns (address payable) {
  return msg.sender;
}

internal Context._msgData

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgData() internal view returns (bytes memory) {
  this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
  return msg.data;
}

Golem Network Token

ERC20

About link description

Stats

Events (4) keyboard_arrow_up

Approval Event

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

MinterAdded Event

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

MinterRemoved 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 (2) keyboard_arrow_up

version Constant

PERMIT_TYPEHASH Constant

State Variables (9) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

DOMAIN_SEPARATOR Variable

nonces Variable

_balances Variable

_allowances Variable

_totalSupply Variable

_minters Variable

Functions Expand All Collapse All

isMinter 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

addMinter 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.

onlyMinter checks for the following:

Source Code

renounceMinter 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

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

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

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

increaseAllowance 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

decreaseAllowance 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.

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (2)

State Variables (9)

isMinter

Parameters

addMinter

Parameters

Modifiers

renounceMinter

Parameters

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

allowance

Parameters

approve

Parameters

Requirements

transferFrom

Parameters

Requirements

increaseAllowance

Parameters

Requirements

decreaseAllowance

Parameters

Requirements

mint

Parameters

Modifiers

Requirements

permit

Parameters

Requirements

internal ERC20._transfer

Parameters

Requirements

internal ERC20._mint

Parameters

Requirements

internal ERC20._burn

Parameters

Requirements

internal ERC20._approve

Parameters

Requirements

internal ERC20._burnFrom

Parameters

Requirements

internal Context.constructor

Parameters

internal Context._msgSender

Parameters

internal Context._msgData

Parameters

internal MinterRole.constructor

Parameters

internal MinterRole._addMinter

Parameters

internal MinterRole._removeMinter

Parameters

internal Context.constructor

Parameters

internal Context._msgSender

Parameters

internal Context._msgData