ELF Token

0xbf2179859fc6d5bee9bf9158632dc51678a4100e Copy

ERC20

This contract is an ERC20 token.

Name ELF Token

Symbol ELF

Decimals 18

Total Supply 880,000,000 ELF

About

aelf (ELF) is a cryptocurrency and operates on the Ethereum platform. aelf has a current supply of 879,999,999.9864658 with 544,480,199.9864658 in circulation. The last known price of aelf is 0.18699281 USD and is down -3.23 over the last 24 hours. It is currently trading on 60 active market(s) with $15,522,666.93 traded over the last 24 hours. More information can be found at http://aelf.io/.

Stats

Public Functions 21

Event Types 13

Code Size 17,268 bytes

Library Use

Uses SafeMath for uint256.

Events (13)

Approval Event

Parameters

owner	address
spender	address
value	uint256

ApproveMintTokens Event

Parameters

_owner	address
_amount	uint256

BurnTokens Event

Parameters

_owner	address
_amount	uint256

DisableSetTransferable Event

Parameters

_address	address
_canSetTransferable	bool

MintFinished Event

Parameters

_caller

address

MintTokens Event

Parameters

_owner	address
_amount	uint256

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

SetAElfCommunityMultisig Event

Parameters

_old	address
_new	address

SetAElfDevMultisig Event

Parameters

_old	address
_new	address

SetDurationOfLock Event

Parameters

_caller

address

SetTransferable Event

Parameters

_address	address
_transferable	bool

Transfer Event

Parameters

from	address
to	address
value	uint256

WithdrawMintTokens Event

Parameters

_owner	address
_amount	uint256

Structs (1)

TokensWithLock Struct

Members

value	uint256
blockNumber	uint256

Constants (2)

TIMETHRESHOLD Constant

uint256

7200

MINTTIME Constant

uint256

216000

State Variables (16)

aelfDevMultisig Variable

address

aelfCommunityMultisig Variable

address

totalSupplyCap Variable

uint256

name Variable

string

symbol Variable

string

decimals Variable

uint8

mintingFinished Variable

bool

deployBlockNumber Variable

uint256

durationOfLock Variable

uint256

transferable Variable

bool

canSetTransferable Variable

bool

totalSupply Variable

uint256

owner Variable

address

balances Variable

mapping(address => uint256)

Internal Variable

lockTokens Variable

mapping(address => TokensWithLock)

Internal Variable

allowed Variable

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

Internal Variable

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 UNKNOWN VALUE

Source Code

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

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability view

Source Code

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

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Requirements

_to must not be equal to UNKNOWN VALUE

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

Source Code

function transfer(address _to, uint256 _value)
  public
  canTransfer
  returns (bool)
{
  require(_to != address(0));
  require(_value <= balances[msg.sender]);

  // SafeMath.sub will throw if there is not enough balance.
  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 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

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Requirements

_to must not be equal to UNKNOWN VALUE

_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 canTransfer 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);
  Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Source Code

function approve(address _spender, uint256 _value)
  public
  canTransfer
  returns (bool)
{
  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

increaseApproval

Parameters

Name	Type
_spender	address
_addedValue	uint256

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Source Code

function increaseApproval(address _spender, uint256 _addedValue)
  public
  canTransfer
  returns (bool)
{
  allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(
    _addedValue
  );
  Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
  return true;
}

decreaseApproval

Parameters

Name	Type
_spender	address
_subtractedValue	uint256

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Source Code

function decreaseApproval(address _spender, uint256 _subtractedValue)
  public
  canTransfer
  returns (bool)
{
  uint256 oldValue = allowed[msg.sender][_spender];
  if (_subtractedValue > oldValue) {
    allowed[msg.sender][_spender] = 0;
  } else {
    allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
  }
  Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
  return true;
}

setTransferable

Parameters

Name	Type
_transferable	bool

Properties

Visibility public

Mutability transaction

Modifiers

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Requirements

canSetTransferable must be equal to true

Source Code

function setTransferable(bool _transferable) public only(aelfDevMultisig) {
  require(canSetTransferable == true);
  transferable = _transferable;
  SetTransferable(msg.sender, _transferable);
}

disableSetTransferable

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Source Code

function disableSetTransferable() public only(aelfDevMultisig) {
  transferable = true;
  canSetTransferable = false;
  DisableSetTransferable(msg.sender, false);
}

setAElfDevMultisig

Parameters

Name	Type
_aelfDevMultisig	address

Properties

Visibility public

Mutability transaction

Modifiers

only checks for the following:

aelfDevMultisig must be equal to the sender's address

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

Source Code

function setAElfDevMultisig(address _aelfDevMultisig)
  public
  only(aelfDevMultisig)
  nonZeroAddress(_aelfDevMultisig)
{
  aelfDevMultisig = _aelfDevMultisig;
  SetAElfDevMultisig(msg.sender, _aelfDevMultisig);
}

setAElfCommunityMultisig

Parameters

Name	Type
_aelfCommunityMultisig	address

Properties

Visibility public

Mutability transaction

Modifiers

only checks for the following:

aelfDevMultisig must be equal to the sender's address

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

Source Code

function setAElfCommunityMultisig(address _aelfCommunityMultisig)
  public
  only(aelfCommunityMultisig)
  nonZeroAddress(_aelfCommunityMultisig)
{
  aelfCommunityMultisig = _aelfCommunityMultisig;
  SetAElfCommunityMultisig(msg.sender, _aelfCommunityMultisig);
}

setDurationOfLock

Parameters

Name	Type
_durationOfLock	uint256

Properties

Visibility public

Mutability transaction

Modifiers

canMint checks for the following:

mintingFinished must not be true

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Requirements

_durationOfLock must be greater than or equal to TIMETHRESHOLD

Source Code

function setDurationOfLock(uint256 _durationOfLock)
  public
  canMint
  only(aelfCommunityMultisig)
{
  require(_durationOfLock >= TIMETHRESHOLD);
  durationOfLock = _durationOfLock;
  SetDurationOfLock(msg.sender);
}

getLockTokens

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability view

Modifiers

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

Source Code

function getLockTokens(address _owner)
  public
  view
  nonZeroAddress(_owner)
  returns (uint256 value, uint256 blockNumber)
{
  return (lockTokens[_owner].value, lockTokens[_owner].blockNumber);
}

approveMintTokens

Parameters

Name	Type
_owner	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

canMint checks for the following:

mintingFinished must not be true

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Requirements

_amount must be greater than 0

previousLockTokens must be less than or equal to previousLockTokens + _amount

curTotalSupply must be less than or equal to curTotalSupply + _amount

totalSupplyCap must be greater than or equal to curTotalSupply + _amount

previousBalanceTo must be less than or equal to previousBalanceTo + _amount

Source Code

function approveMintTokens(address _owner, uint256 _amount)
  public
  nonZeroAddress(_owner)
  canMint
  only(aelfCommunityMultisig)
  returns (bool)
{
  require(_amount > 0);
  uint256 previousLockTokens = lockTokens[_owner].value;
  require(previousLockTokens + _amount >= previousLockTokens);
  uint256 curTotalSupply = totalSupply;
  require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
  require(curTotalSupply + _amount <= totalSupplyCap); // Check for overflow of total supply cap
  uint256 previousBalanceTo = balanceOf(_owner);
  require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
  lockTokens[_owner].value = previousLockTokens.add(_amount);
  uint256 curBlockNumber = getCurrentBlockNumber();
  lockTokens[_owner].blockNumber = curBlockNumber.add(durationOfLock);
  ApproveMintTokens(_owner, _amount);
  return true;
}

withdrawMintTokens

Parameters

Name	Type
_owner	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

canMint checks for the following:

mintingFinished must not be true

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Requirements

_amount must be greater than 0

previousLockTokens - _amount must be greater than or equal to 0

Source Code

function withdrawMintTokens(address _owner, uint256 _amount)
  public
  nonZeroAddress(_owner)
  canMint
  only(aelfCommunityMultisig)
  returns (bool)
{
  require(_amount > 0);
  uint256 previousLockTokens = lockTokens[_owner].value;
  require(previousLockTokens - _amount >= 0);
  lockTokens[_owner].value = previousLockTokens.sub(_amount);
  if (previousLockTokens - _amount == 0) {
    lockTokens[_owner].blockNumber = 0;
  }
  WithdrawMintTokens(_owner, _amount);
  return true;
}

mintTokens

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability transaction

Modifiers

canMint checks for the following:

mintingFinished must not be true

only checks for the following:

aelfDevMultisig must be equal to the sender's address

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

Requirements

undefined.blockNumber must be less than or equal to the result of calling getCurrentBlockNumber

curTotalSupply must be less than or equal to curTotalSupply + _amount

totalSupplyCap must be greater than or equal to curTotalSupply + _amount

previousBalanceTo must be less than or equal to previousBalanceTo + _amount

Source Code

function mintTokens(address _owner)
  public
  canMint
  only(aelfDevMultisig)
  nonZeroAddress(_owner)
  returns (bool)
{
  require(lockTokens[_owner].blockNumber <= getCurrentBlockNumber());
  uint256 _amount = lockTokens[_owner].value;
  uint256 curTotalSupply = totalSupply;
  require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
  require(curTotalSupply + _amount <= totalSupplyCap); // Check for overflow of total supply cap
  uint256 previousBalanceTo = balanceOf(_owner);
  require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow

  totalSupply = curTotalSupply.add(_amount);
  balances[_owner] = previousBalanceTo.add(_amount);
  lockTokens[_owner].value = 0;
  lockTokens[_owner].blockNumber = 0;
  MintTokens(_owner, _amount);
  Transfer(0, _owner, _amount);
  return true;
}

mintTokensWithinTime

Parameters

Name	Type
_owner	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

nonZeroAddress checks for the following:

_aelfDevMultisig must not be equal to UNKNOWN VALUE

canMint checks for the following:

mintingFinished must not be true

only checks for the following:

aelfDevMultisig must be equal to the sender's address

Requirements

_amount must be greater than 0

the result of calling getCurrentBlockNumber must be less than UNKNOWN VALUE

curTotalSupply must be less than or equal to curTotalSupply + _amount

totalSupplyCap must be greater than or equal to curTotalSupply + _amount

previousBalanceTo must be less than or equal to previousBalanceTo + _amount

Source Code

function mintTokensWithinTime(address _owner, uint256 _amount)
  public
  nonZeroAddress(_owner)
  canMint
  only(aelfDevMultisig)
  returns (bool)
{
  require(_amount > 0);
  require(getCurrentBlockNumber() < (deployBlockNumber + MINTTIME));
  uint256 curTotalSupply = totalSupply;
  require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
  require(curTotalSupply + _amount <= totalSupplyCap); // Check for overflow of total supply cap
  uint256 previousBalanceTo = balanceOf(_owner);
  require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow

  totalSupply = curTotalSupply.add(_amount);
  balances[_owner] = previousBalanceTo.add(_amount);
  MintTokens(_owner, _amount);
  Transfer(0, _owner, _amount);
  return true;
}

transferForMultiAddresses

Parameters

Name	Type
_addresses	address[]
_amounts	uint256[]

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

transferable must be equal to true

Source Code

function transferForMultiAddresses(address[] _addresses, uint256[] _amounts)
  public
  canTransfer
  returns (bool)
{
  for (uint256 i = 0; i < _addresses.length; i++) {
    require(_addresses[i] != address(0));
    require(_amounts[i] <= balances[msg.sender]);
    require(_amounts[i] > 0);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_amounts[i]);
    balances[_addresses[i]] = balances[_addresses[i]].add(_amounts[i]);
    Transfer(msg.sender, _addresses[i], _amounts[i]);
  }
  return true;
}

burnTokens

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

_amount must be greater than 0

curTotalSupply must be greater than or equal to _amount

previousBalanceTo must be greater than or equal to _amount

Source Code

function burnTokens(uint256 _amount) public returns (bool) {
  require(_amount > 0);
  uint256 curTotalSupply = totalSupply;
  require(curTotalSupply >= _amount);
  uint256 previousBalanceTo = balanceOf(msg.sender);
  require(previousBalanceTo >= _amount);
  totalSupply = curTotalSupply.sub(_amount);
  balances[msg.sender] = previousBalanceTo.sub(_amount);
  BurnTokens(msg.sender, _amount);
  Transfer(msg.sender, 0, _amount);
  return true;
}

finishMinting

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

only checks for the following:

aelfDevMultisig must be equal to the sender's address

canMint checks for the following:

mintingFinished must not be true

Source Code

function finishMinting() public only(aelfDevMultisig) canMint returns (bool) {
  mintingFinished = true;
  MintFinished(msg.sender);
  return true;
}

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 AElfToken.getCurrentBlockNumber

Parameters

This function has no parameters.

Properties

Visibility private

Mutability view

Source Code

function getCurrentBlockNumber() private view returns (uint256) {
  return block.number;
}

ELF Token

ERC20

About link description

Stats

Library Use

Events (13) keyboard_arrow_up

Approval Event

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

ApproveMintTokens Event

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

BurnTokens Event

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

DisableSetTransferable Event

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

MintFinished Event

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

MintTokens 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.

SetAElfCommunityMultisig Event

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

SetAElfDevMultisig Event

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

SetDurationOfLock Event

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

SetTransferable 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.

WithdrawMintTokens Event

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

Structs (1) keyboard_arrow_up

TokensWithLock Struct

Members

Constants (2) keyboard_arrow_up

TIMETHRESHOLD Constant

MINTTIME Constant

State Variables (16) keyboard_arrow_up

aelfDevMultisig Variable

aelfCommunityMultisig Variable

totalSupplyCap Variable

name Variable

symbol Variable

decimals Variable

mintingFinished Variable

deployBlockNumber Variable

durationOfLock Variable

transferable Variable

canSetTransferable Variable

totalSupply Variable

owner Variable

balances Variable

lockTokens Variable

allowed Variable

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.

canTransfer 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.

About

Events (13)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Structs (1)

Constants (2)

State Variables (16)

transferOwnership

Parameters

Modifiers

Requirements

balanceOf

Parameters

transfer

Parameters

Modifiers

Requirements

allowance

Parameters

transferFrom

Parameters

Modifiers

Requirements

approve

Parameters

Modifiers

increaseApproval

Parameters

Modifiers

decreaseApproval

Parameters

Modifiers

setTransferable

Parameters

Modifiers

Requirements

disableSetTransferable

Parameters

Modifiers

setAElfDevMultisig

Parameters

Modifiers

setAElfCommunityMultisig

Parameters

Modifiers

setDurationOfLock

Parameters

Modifiers

Requirements

getLockTokens

Parameters

Modifiers

approveMintTokens

Parameters

Modifiers