Friendz Coin

0x23352036e911a22cfc692b5e2e196692658aded9 Copy

ERC20

This contract is an ERC20 token.

Name Friendz Coin

Symbol FDZ

Decimals 18

Total Supply 1,131,842,156 FDZ

About

Friendz (FDZ) is a cryptocurrency and operates on the Ethereum platform. Friendz has a current supply of 1,129,842,156.3806603 with 520,690,651.0893247 in circulation. The last known price of Friendz is 0.00166742 USD and is up 4.12 over the last 24 hours. It is currently trading on 7 active market(s) with $52,883.77 traded over the last 24 hours. More information can be found at https://friendz.io/.

Stats

Public Functions 17

Event Types 7

Code Size 10,574 bytes

Events (7)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Burn Event

Parameters

burner	address
amount	uint256

CoOwnerSet Event

Parameters

owner

address

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

ReleaseDateChanged Event

Parameters

from	address
date	uint256

Transfer Event

Parameters

from	address
to	address
value	uint256

UpdatedBlockingState Event

Parameters

to	address
purchase	uint256
end_date	uint256
value	uint256

State Variables (17)

free_transfer Variable

bool

RELEASE_DATE Variable

uint256

name Variable

string

symbol Variable

string

decimals Variable

uint256

totalSupply Variable

uint256

owner Variable

address

release_dates Variable

mapping(address => uint256)

purchase_dates Variable

mapping(address => uint256)

blocked_amounts Variable

mapping(address => uint256)

allowed Variable

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

Internal Variable

co_owner Variable

address

Internal Variable

presale_holder Variable

address

Internal Variable

ico_holder Variable

address

Internal Variable

reserved_holder Variable

address

Internal Variable

wallet_holder Variable

address

Internal Variable

balances Variable

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

newOwner must not be equal to owner

Source Code

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

  OwnershipTransferred(owner, newOwner);
  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

Requirements

_to must not be equal to UNKNOWN VALUE

_value must be greater than 0

Source Code

function transfer(address _to, uint256 _value) public returns (bool) {
  require(_to != address(0));
  require(_value > 0);

  // 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;
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function burn(uint256 _value) public {
  balances[msg.sender] = balances[msg.sender].sub(_value);
  totalSupply = totalSupply.sub(_value);

  Burn(msg.sender, _value);
}

canTransferBefore

Parameters

Name	Type
_sender	address

Properties

Visibility public

Mutability view

Source Code

function canTransferBefore(address _sender) public view returns (bool) {
  return (_sender == owner ||
    _sender == presale_holder ||
    _sender == ico_holder ||
    _sender == reserved_holder ||
    _sender == wallet_holder);
}

canTransferIfLocked

Parameters

Name	Type
_sender	address
_value	uint256

Properties

Visibility public

Mutability view

Source Code

function canTransferIfLocked(address _sender, uint256 _value)
  public
  view
  returns (bool)
{
  uint256 after_math = balances[_sender].sub(_value);
  return (now >= RELEASE_DATE && after_math >= getMinimumAmount(_sender));
}

setCoOwner

Parameters

Name	Type
_addr	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

_addr must not be equal to co_owner

Source Code

function setCoOwner(address _addr) public onlyOwner {
  require(_addr != co_owner);

  co_owner = _addr;

  CoOwnerSet(_addr);
}

setReleaseDate

Parameters

Name	Type
_date	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

_date must be greater than 0

_date must not be equal to RELEASE_DATE

Source Code

function setReleaseDate(uint256 _date) public onlyOwner {
  require(_date > 0);
  require(_date != RELEASE_DATE);

  RELEASE_DATE = _date;

  ReleaseDateChanged(msg.sender, _date);
}

getMinimumAmount

Parameters

Name	Type
_addr	address

Properties

Visibility public

Mutability constant

Source Code

function getMinimumAmount(address _addr) public constant returns (uint256) {
  // if the address ha no limitations just return 0
  if (blocked_amounts[_addr] == 0x0) return 0x0;

  // if the purchase date is in the future block all the tokens
  if (purchase_dates[_addr] > now) {
    return blocked_amounts[_addr];
  }

  uint256 alpha = uint256(now).sub(purchase_dates[_addr]); // absolute purchase date
  uint256 beta = release_dates[_addr].sub(purchase_dates[_addr]); // absolute token release date
  uint256 tokens = blocked_amounts[_addr].sub(
    alpha.mul(blocked_amounts[_addr]).div(beta)
  ); // T - (α * T) / β

  return tokens;
}

setBlockingState

Parameters

Name	Type
_addr	address
_end	uint256
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isBlockingTransfer checks for the following:

free_transfer must not be true

Requirements

One or more of the following: - co_owner must be equal to the sender's address - OR owner must be equal to the sender's address

_addr must not be equal to UNKNOWN VALUE

Source Code

function setBlockingState(
  address _addr,
  uint256 _end,
  uint256 _value
) public isBlockingTransfer {
  // only the onwer and the co-owner can call this function
  require(msg.sender == owner || msg.sender == co_owner);
  require(_addr != address(0));

  uint256 final_value = _value;

  if (release_dates[_addr] != 0x0) {
    // if it's not the first time this function is beign called for this address
    // update its information instead of setting them (add value to previous value)
    final_value = blocked_amounts[_addr].add(_value);
  }

  release_dates[_addr] = _end;
  purchase_dates[_addr] = RELEASE_DATE;
  blocked_amounts[_addr] = final_value;

  UpdatedBlockingState(_addr, _end, RELEASE_DATE, final_value);
}

freeToken

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function freeToken() public onlyOwner {
  free_transfer = true;
}

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

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

One or more of the following: -null - ORnull

Requirements

_to must not be equal to UNKNOWN VALUE

_value must be greater than 0

Source Code

function transfer(address _to, uint256 _value)
  public
  canTransfer(msg.sender, _value)
  returns (bool success)
{
  return super.transfer(_to, _value);
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

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

One or more of the following: -null - ORnull

Requirements

_from must not be equal to UNKNOWN VALUE

_to must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public canTransfer(_from, _value) returns (bool success) {
  require(_from != address(0));
  require(_to != address(0));

  // SafeMath.sub will throw if there is not enough balance.
  balances[_from] = balances[_from].sub(_value);
  balances[_to] = balances[_to].add(_value);
  allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); // this will throw if we don't have enough allowance

  // this event comes from BasicToken.sol
  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: - allowed for the sender's address for _spender must be equal to 0 - OR _value must be equal to 0

Source Code

function approve(address _spender, uint256 _value) public returns (bool) {
  require(_value == 0 || allowed[msg.sender][_spender] == 0);

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

  return true;
}

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];
}

increaseApproval

Parameters

Name	Type
_spender	address
_addedValue	uint256

Properties

Visibility public

Mutability transaction

Source Code

function increaseApproval(address _spender, uint256 _addedValue)
  public
  returns (bool success)
{
  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

Source Code

function decreaseApproval(address _spender, uint256 _subtractedValue)
  public
  returns (bool success)
{
  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;
}

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.

Friendz Coin

ERC20

About link description

Stats

Events (7) 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.

CoOwnerSet 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.

ReleaseDateChanged 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.

UpdatedBlockingState Event

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

State Variables (17) keyboard_arrow_up

free_transfer Variable

RELEASE_DATE Variable

name Variable

symbol Variable

decimals Variable

totalSupply Variable

owner Variable

release_dates Variable

purchase_dates Variable

blocked_amounts Variable

allowed Variable

co_owner Variable

presale_holder Variable

ico_holder Variable

reserved_holder Variable

wallet_holder Variable

balances 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

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

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

Source Code

canTransferBefore 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

canTransferIfLocked 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

setCoOwner 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

setReleaseDate 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

About

Events (7)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

State Variables (17)

transferOwnership

Parameters

Modifiers

Requirements

balanceOf

Parameters

transfer

Parameters

Requirements

burn

Parameters

canTransferBefore

Parameters

canTransferIfLocked

Parameters

setCoOwner

Parameters

Modifiers

Requirements

setReleaseDate

Parameters

Modifiers

Requirements

getMinimumAmount

Parameters

setBlockingState

Parameters

Modifiers

Requirements

freeToken

Parameters

Modifiers

transfer

Parameters

Modifiers

Requirements

transferFrom

Parameters

Modifiers

Requirements

approve

Parameters

Requirements

allowance

Parameters

increaseApproval

Parameters

decreaseApproval

Parameters