Civic

0x41e5560054824ea6b0732e656e3ad64e20e94e45 Copy

ERC20

This contract is an ERC20 token.

Name Civic

Symbol CVC

Decimals 8

Total Supply 1,000,000,000 CVC

About

Civic (CVC) is a cryptocurrency and operates on the Ethereum platform. Civic has a current supply of 1,000,000,000 with 670,000,000 in circulation. The last known price of Civic is 0.214842 USD and is down -2.30 over the last 24 hours. It is currently trading on 63 active market(s) with $22,913,724.97 traded over the last 24 hours. More information can be found at https://www.civic.com/.

Stats

Public Functions 12

Event Types 6

Code Size 10,909 bytes

Events (6)

Approval Event

Parameters

owner	address
spender	address
value	uint

NewUpgradeMaster Event

Parameters

upgradeMaster

address

Transfer Event

Parameters

from	address
to	address
value	uint

UpdatedTokenInformation Event

Parameters

newName	string
newSymbol	string

Upgrade Event

Parameters

_from	address
_to	address
_value	uint256

UpgradeAgentSet Event

Parameters

agent

address

State Variables (9)

name Variable

string

symbol Variable

string

decimals Variable

uint

upgradeMaster Variable

address

upgradeAgent Variable

address

totalUpgraded Variable

uint256

totalSupply Variable

uint

balances Variable

mapping(address => uint)

Internal Variable

allowed Variable

mapping(address => mapping(address => uint))

Internal Variable

Functions Expand All Collapse All

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

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

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];
}

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Source Code

function transfer(address _to, uint256 _value) returns (bool success) {
  balances[msg.sender] = safeSub(balances[msg.sender], _value);
  balances[_to] = safeAdd(balances[_to], _value);
  Transfer(msg.sender, _to, _value);
  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) returns (bool success) {
  uint256 _allowance = allowed[_from][msg.sender];

  balances[_to] = safeAdd(balances[_to], _value);
  balances[_from] = safeSub(balances[_from], _value);
  allowed[_from][msg.sender] = safeSub(_allowance, _value);
  Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint

Properties

Visibility public

Mutability transaction

Requirements

One or more of the following:

Source Code

function approve(address _spender, uint256 _value) returns (bool success) {
  // To change the approve amount you first have to reduce the addresses`
  //  allowance to zero by calling `approve(_spender, 0)` if it is not
  //  already 0 to mitigate the race condition described here:
  //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
  if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;

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

isToken

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function isToken() public constant returns (bool weAre) {
  return true;
}

upgrade

Parameters

Name	Type
value	uint256

Properties

Visibility public

Mutability transaction

Requirements

UNKNOWN VALUE must not be true

value must not be equal to 0

Source Code

function upgrade(uint256 value) public {
  UpgradeState state = getUpgradeState();
  if (
    !(state == UpgradeState.ReadyToUpgrade || state == UpgradeState.Upgrading)
  ) {
    // Called in a bad state
    throw;
  }

  // Validate input value.
  if (value == 0) throw;

  balances[msg.sender] = safeSub(balances[msg.sender], value);

  // Take tokens out from circulation
  totalSupply = safeSub(totalSupply, value);
  totalUpgraded = safeAdd(totalUpgraded, value);

  // Upgrade agent reissues the tokens
  upgradeAgent.upgradeFrom(msg.sender, value);
  Upgrade(msg.sender, upgradeAgent, value);
}

setUpgradeAgent

Parameters

Name	Type
agent	address

Properties

Visibility public

Mutability transaction

Requirements

the result of calling canUpgrade must not be true

agent must not be equal to 0x0

upgradeMaster must be equal to the sender's address

the result of calling getUpgradeState must not be equal to UpgradeState.Upgrading

the result of calling undefined must not be true

totalSupply must be equal to UNKNOWN VALUE

Source Code

function setUpgradeAgent(address agent) external {
  if (!canUpgrade()) {
    // The token is not yet in a state that we could think upgrading
    throw;
  }

  if (agent == 0x0) throw;
  // Only a master can designate the next agent
  if (msg.sender != upgradeMaster) throw;
  // Upgrade has already begun for an agent
  if (getUpgradeState() == UpgradeState.Upgrading) throw;

  upgradeAgent = UpgradeAgent(agent);

  // Bad interface
  if (!upgradeAgent.isUpgradeAgent()) throw;
  // Make sure that token supplies match in source and target
  if (upgradeAgent.originalSupply() != totalSupply) throw;

  UpgradeAgentSet(upgradeAgent);
}

getUpgradeState

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function getUpgradeState() public constant returns (UpgradeState) {
  if (!canUpgrade()) return UpgradeState.NotAllowed;
  else if (address(upgradeAgent) == 0x00) return UpgradeState.WaitingForAgent;
  else if (totalUpgraded == 0) return UpgradeState.ReadyToUpgrade;
  else return UpgradeState.Upgrading;
}

setUpgradeMaster

Parameters

Name	Type
master	address

Properties

Visibility public

Mutability transaction

Requirements

master must not be equal to 0x0

upgradeMaster must be equal to the sender's address

Source Code

function setUpgradeMaster(address master) public {
  if (master == 0x0) throw;
  if (msg.sender != upgradeMaster) throw;
  upgradeMaster = master;
  NewUpgradeMaster(upgradeMaster);
}

canUpgrade

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function canUpgrade() public constant returns (bool) {
  return true;
}

setTokenInformation

Parameters

Name	Type
_name	string
_symbol	string

Properties

Visibility public

Mutability transaction

Requirements

upgradeMaster must be equal to the sender's address

the number of values in undefined must be less than or equal to 0

Source Code

function setTokenInformation(string _name, string _symbol) {
  if (msg.sender != upgradeMaster) {
    throw;
  }

  if (bytes(name).length > 0 || bytes(symbol).length > 0) {
    // Information already set
    // Allow owner to set this information only once
    throw;
  }

  name = _name;
  symbol = _symbol;
  UpdatedTokenInformation(name, symbol);
}

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 SafeMath.safeMul

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility internal

Mutability transaction

Requirements

One or more of the following: - b must be equal to c / a - OR a must be equal to 0

Source Code

function safeMul(uint256 a, uint256 b) internal returns (uint256) {
  uint256 c = a * b;
  assert(a == 0 || c / a == b);
  return c;
}

internal SafeMath.safeDiv

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility internal

Mutability transaction

Requirements

b must be greater than 0

a must be equal to b * c + UNKNOWN VALUE

Source Code

function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
  assert(b > 0);
  uint256 c = a / b;
  assert(a == b * c + (a % b));
  return c;
}

internal SafeMath.safeSub

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility internal

Mutability transaction

Requirements

b must be less than or equal to a

Source Code

function safeSub(uint256 a, uint256 b) internal returns (uint256) {
  assert(b <= a);
  return a - b;
}

internal SafeMath.safeAdd

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility internal

Mutability transaction

Requirements

c must be greater than or equal to b

c must be greater than or equal to a

Source Code

function safeAdd(uint256 a, uint256 b) internal returns (uint256) {
  uint256 c = a + b;
  assert(c >= a && c >= b);
  return c;
}

internal SafeMath.max64

Parameters

Name	Type
a	uint64
b	uint64

Properties

Visibility internal

Mutability constant

Source Code

function max64(uint64 a, uint64 b) internal constant returns (uint64) {
  return a >= b ? a : b;
}

internal SafeMath.min64

Parameters

Name	Type
a	uint64
b	uint64

Properties

Visibility internal

Mutability constant

Source Code

function min64(uint64 a, uint64 b) internal constant returns (uint64) {
  return a < b ? a : b;
}

internal SafeMath.max256

Parameters

Name	Type
a	uint256
b	uint256

Properties

Visibility internal

Mutability constant

Source Code

function max256(uint256 a, uint256 b) internal constant returns (uint256) {
  return a >= b ? a : b;
}

internal SafeMath.min256

Parameters

Name	Type
a	uint256
b	uint256

Properties

Visibility internal

Mutability constant

Source Code

function min256(uint256 a, uint256 b) internal constant returns (uint256) {
  return a < b ? a : b;
}

internal SafeMath.assert

Parameters

Name	Type
assertion	bool

Properties

Visibility internal

Mutability transaction

Requirements

assertion must not be true

Source Code

function assert(bool assertion) internal {
  if (!assertion) {
    throw;
  }
}

Civic

ERC20

About link description

Stats

Events (6) keyboard_arrow_up

Approval Event

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

NewUpgradeMaster 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.

UpdatedTokenInformation Event

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

Upgrade Event

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

UpgradeAgentSet Event

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

State Variables (9) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

upgradeMaster Variable

upgradeAgent Variable

totalUpgraded Variable

totalSupply Variable

balances Variable

allowed Variable

Functions Expand All Collapse All

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

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

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

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

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

isToken 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

upgrade 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

setUpgradeAgent 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

getUpgradeState 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

setUpgradeMaster 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

canUpgrade 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

setTokenInformation 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.

About

Events (6)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

State Variables (9)

balanceOf

Parameters

allowance

Parameters

transfer

Parameters

transferFrom

Parameters

approve

Parameters

Requirements

isToken

Parameters

upgrade

Parameters

Requirements

setUpgradeAgent

Parameters

Requirements

getUpgradeState

Parameters

setUpgradeMaster

Parameters

Requirements

canUpgrade

Parameters

setTokenInformation

Parameters

Requirements

internal SafeMath.safeMul

Parameters

Requirements

internal SafeMath.safeDiv

Parameters

Requirements

internal SafeMath.safeSub

Parameters

Requirements

internal SafeMath.safeAdd

Parameters

Requirements

internal SafeMath.max64

Parameters

internal SafeMath.min64

Parameters

internal SafeMath.max256

Parameters

internal SafeMath.min256

Parameters

internal SafeMath.assert

Parameters

Requirements