Centra token

0x96a65609a7b84e8842732deb08f56c3e21ac6f8a Copy

ERC20

This contract is an ERC20 token.

Name Centra token

Symbol Centra

Decimals 18

Total Supply 100,000,000 Centra

About

Stats

Public Functions 14

Event Types 2

Code Size 12,081 bytes

Library Use

Uses SafeMath for uint.

Events (2)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

Transfer Event

Parameters

_from	address
_to	address
_value	uint256

Constants (21)

symbol Constant

string

Centra

name Constant

string

Centra token

decimals Constant

uint8

maxTokens Constant

uint256

100000000 * UNKNOWN VALUE

ownerSupply Constant

uint256

maxTokens * 32 / 100

token_price Constant

uint256

1 / 400 * UNKNOWN VALUE

ico_start Constant

uint

1501891200

ico_finish Constant

uint

1507248000

minValuePre Constant

uint

1 / 10 * UNKNOWN VALUE

minValue Constant

uint

1 / 10 * UNKNOWN VALUE

maxValue Constant

uint

3000 * UNKNOWN VALUE

card_gold_minamount Constant

uint

30 * UNKNOWN VALUE

card_gold_first Constant

uint

1000

card_black_minamount Constant

uint

100 * UNKNOWN VALUE

card_black_first Constant

uint

500

card_titanium_minamount Constant

uint

500 * UNKNOWN VALUE

card_titanium_first Constant

uint

200

card_blue_minamount Constant

uint

5 / 10 * UNKNOWN VALUE

card_blue_first Constant

uint

100000000

card_start_minamount Constant

uint

1 / 10 * UNKNOWN VALUE

card_start_first Constant

uint

100000000

State Variables (14)

owner Variable

address

cards_black_check Variable

mapping(address => uint)

_totalSupply Variable

uint256

Internal Variable

cards_gold_check Variable

mapping(address => uint)

Internal Variable

cards_gold Variable

address[]

Internal Variable

cards_black Variable

address[]

Internal Variable

cards_titanium_check Variable

mapping(address => uint)

Internal Variable

cards_titanium Variable

address[]

Internal Variable

cards_blue_check Variable

mapping(address => uint)

Internal Variable

cards_blue Variable

address[]

Internal Variable

cards_start_check Variable

mapping(address => uint)

Internal Variable

cards_start Variable

address[]

Internal Variable

balances Variable

mapping(address => uint256)

Internal Variable

allowed Variable

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

Internal Variable

Functions Expand All Collapse All

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function totalSupply() constant returns (uint256 totalSupply) {
  totalSupply = _totalSupply;
}

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
_amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

now must be greater than or equal to ico_start

Source Code

function transfer(address _to, uint256 _amount) returns (bool success) {
  if (now < ico_start) throw;

  if (
    balances[msg.sender] >= _amount &&
    _amount > 0 &&
    balances[_to] + _amount > balances[_to]
  ) {
    balances[msg.sender] -= _amount;
    balances[_to] += _amount;
    Transfer(msg.sender, _to, _amount);
    return true;
  } else {
    return false;
  }
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

now must be greater than or equal to ico_start

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _amount
) returns (bool success) {
  if (now < ico_start) throw;

  if (
    balances[_from] >= _amount &&
    allowed[_from][msg.sender] >= _amount &&
    _amount > 0 &&
    balances[_to] + _amount > balances[_to]
  ) {
    balances[_from] -= _amount;
    allowed[_from][msg.sender] -= _amount;
    balances[_to] += _amount;
    Transfer(_from, _to, _amount);
    return true;
  } else {
    return false;
  }
}

approve

Parameters

Name	Type
_spender	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Source Code

function approve(address _spender, uint256 _amount) returns (bool success) {
  allowed[msg.sender][_spender] = _amount;
  Approval(msg.sender, _spender, _amount);
  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];
}

constructor

Parameters

This function has no parameters.

Properties

Visibility public

Mutability payable

Requirements

tnow must be less than or equal to ico_finish

_totalSupply must be less than maxTokens

UNKNOWN VALUE must not be true

maxValue must be greater than or equal to msg.value

UNKNOWN VALUE must not be true

maxTokens must be greater than or equal to UNKNOWN VALUE

Source Code

function() payable {
  tokens_buy();
}

withdraw

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 withdraw() onlyOwner returns (bool result) {
  owner.send(this.balance);
  return true;
}

cards_black_total

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function cards_black_total() constant returns (uint256) {
  return cards_black.length;
}

cards_gold_total

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function cards_gold_total() constant returns (uint256) {
  return cards_gold.length;
}

cards_titanium_total

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function cards_titanium_total() constant returns (uint256) {
  return cards_titanium.length;
}

cards_blue_total

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function cards_blue_total() constant returns (uint256) {
  return cards_blue.length;
}

cards_start_total

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function cards_start_total() constant returns (uint256) {
  return cards_start.length;
}

tokens_buy

Parameters

This function has no parameters.

Properties

Visibility public

Mutability payable

Requirements

tnow must be less than or equal to ico_finish

_totalSupply must be less than maxTokens

UNKNOWN VALUE must not be true

maxValue must be greater than or equal to msg.value

UNKNOWN VALUE must not be true

maxTokens must be greater than or equal to UNKNOWN VALUE

Source Code

function tokens_buy() payable returns (bool) {
  uint256 tnow = now;

  if (tnow > ico_finish) throw;
  if (_totalSupply >= maxTokens) throw;
  if (!(msg.value >= token_price)) throw;
  if (!(msg.value >= minValue)) throw;
  if (msg.value > maxValue) throw;

  uint256 tokens_buy = (msg.value / token_price) * 10**18;

  if (!(tokens_buy > 0)) throw;

  if (tnow < ico_start) {
    if (!(msg.value >= minValuePre)) throw;
    tokens_buy = (tokens_buy * 125) / 100;
  }
  if ((ico_start + 86400 * 0 <= tnow) && (tnow < ico_start + 86400 * 2)) {
    tokens_buy = (tokens_buy * 120) / 100;
  }
  if ((ico_start + 86400 * 2 <= tnow) && (tnow < ico_start + 86400 * 7)) {
    tokens_buy = (tokens_buy * 110) / 100;
  }
  if ((ico_start + 86400 * 7 <= tnow) && (tnow < ico_start + 86400 * 14)) {
    tokens_buy = (tokens_buy * 105) / 100;
  }

  if (_totalSupply.add(tokens_buy) > maxTokens) throw;
  _totalSupply = _totalSupply.add(tokens_buy);
  balances[msg.sender] = balances[msg.sender].add(tokens_buy);

  if (
    (msg.value >= card_gold_minamount) &&
    (msg.value < card_black_minamount) &&
    (cards_gold.length < card_gold_first) &&
    (cards_gold_check[msg.sender] != 1)
  ) {
    cards_gold.push(msg.sender);
    cards_gold_check[msg.sender] = 1;
  }

  if (
    (msg.value >= card_black_minamount) &&
    (msg.value < card_titanium_minamount) &&
    (cards_black.length < card_black_first) &&
    (cards_black_check[msg.sender] != 1)
  ) {
    cards_black.push(msg.sender);
    cards_black_check[msg.sender] = 1;
  }

  if (
    (msg.value >= card_titanium_minamount) &&
    (cards_titanium.length < card_titanium_first) &&
    (cards_titanium_check[msg.sender] != 1)
  ) {
    cards_titanium.push(msg.sender);
    cards_titanium_check[msg.sender] = 1;
  }

  if (
    (msg.value >= card_blue_minamount) &&
    (msg.value < card_gold_minamount) &&
    (cards_blue.length < card_blue_first) &&
    (cards_blue_check[msg.sender] != 1)
  ) {
    cards_blue.push(msg.sender);
    cards_blue_check[msg.sender] = 1;
  }

  if (
    (msg.value >= card_start_minamount) &&
    (msg.value < card_blue_minamount) &&
    (cards_start.length < card_start_first) &&
    (cards_start_check[msg.sender] != 1)
  ) {
    cards_start.push(msg.sender);
    cards_start_check[msg.sender] = 1;
  }

  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.

Centra token

ERC20

About

Stats

Library Use

Events (2) keyboard_arrow_up

Approval 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 (21) keyboard_arrow_up

symbol Constant

name Constant

decimals Constant

maxTokens Constant

ownerSupply Constant

token_price Constant

ico_start Constant

ico_finish Constant

minValuePre Constant

minValue Constant

maxValue Constant

card_gold_minamount Constant

card_gold_first Constant

card_black_minamount Constant

card_black_first Constant

card_titanium_minamount Constant

card_titanium_first Constant

card_blue_minamount Constant

card_blue_first Constant

card_start_minamount Constant

card_start_first Constant

State Variables (14) keyboard_arrow_up

owner Variable

cards_black_check Variable

_totalSupply Variable

cards_gold_check Variable

cards_gold Variable

cards_black Variable

cards_titanium_check Variable

cards_titanium Variable

cards_blue_check Variable

cards_blue Variable

cards_start_check Variable

cards_start Variable

balances Variable

allowed Variable

Functions Expand All Collapse All

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

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

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

constructor 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

withdraw keyboard_arrow_up

Events (2)

Parameters

Parameters

Constants (21)

State Variables (14)

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

transferFrom

Parameters

Requirements

approve

Parameters

allowance

Parameters

constructor

Parameters

Requirements

withdraw

Parameters

Modifiers

cards_black_total

Parameters

cards_gold_total

Parameters

cards_titanium_total

Parameters

cards_blue_total

Parameters

cards_start_total

Parameters

tokens_buy

Parameters

Requirements