CRO

0xa0b73e1ff0b80914ab6fe0444e65848c4c34450b Copy

ERC20

This contract is an ERC20 token.

Name CRO

Symbol CRO

Decimals 8

Total Supply 100,000,000,000 CRO

About

Crypto.com Coin (CRO) is a cryptocurrency and operates on the Ethereum platform. Crypto.com Coin has a current supply of 30,263,013,692 with 25,263,013,692 in circulation. The last known price of Crypto.com Coin is 0.11197736 USD and is down -1.67 over the last 24 hours. It is currently trading on 107 active market(s) with $68,305,874.00 traded over the last 24 hours. More information can be found at https://www.crypto.com/en/chain.

Stats

Public Functions 22

Event Types 9

Code Size 21,056 bytes

Events (9)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Mint Event

Parameters

to	address
amount	uint256

MintFinished Event

Parameters

OwnershipRenounced Event

Parameters

previousOwner

address

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

Transfer Event

Parameters

from	address
to	address
value	uint256

UpdatedTokenInformation Event

Parameters

newName	string
newSymbol	string

Upgrade Event

Parameters

_from	address
_to	address
_value	uint256

UpgradeAgentSet Event

Parameters

agent

address

State Variables (20)

name Variable

string

symbol Variable

string

decimals Variable

uint8

secondarySaleReserveWallet Variable

address

mainNetLaunchIncentiveReserveWallet Variable

address

capitalReserveWallet Variable

address

ecosystemGrantsReserveWallet Variable

address

airdropReserveWallet Variable

address

releaseAgent Variable

address

released Variable

bool

owner Variable

address

mintingFinished Variable

bool

upgradeMaster Variable

address

upgradeAgent Variable

address

totalUpgraded Variable

uint256

transferAgents Variable

mapping(address => bool)

allowed Variable

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

Internal Variable

balances Variable

mapping(address => uint256)

Internal Variable

totalSupply_ Variable

uint256

Internal Variable

canUpgrade_ Variable

bool

Internal Variable

Functions Expand All Collapse All

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function totalSupply() public view returns (uint256) {
  return totalSupply_.sub(balances[address(0)]);
}

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability view

Source Code

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

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

_to must not be equal to UNKNOWN VALUE

Source Code

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

  balances[msg.sender] = balances[msg.sender].sub(_value);
  balances[_to] = balances[_to].add(_value);
  emit 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

Requirements

_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

_to must not be equal to UNKNOWN VALUE

Source Code

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

  balances[_from] = balances[_from].sub(_value);
  balances[_to] = balances[_to].add(_value);
  allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
  emit Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

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

increaseApproval

Parameters

Name	Type
_spender	address
_addedValue	uint256

Properties

Visibility public

Mutability transaction

Source Code

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

upgrade

Parameters

Name	Type
value	uint256

Properties

Visibility public

Mutability transaction

Requirements

state must be equal to UpgradeState.ReadyToUpgrade

value must be greater than 0

Source Code

function upgrade(uint256 value) public {
  UpgradeState state = getUpgradeState();

  require(
    state == UpgradeState.ReadyToUpgrade,
    "It's required that the upgrade state is ready."
  );

  // Validate input value.
  require(value > 0, "The upgrade value is required to be above 0.");

  balances[msg.sender] = balances[msg.sender].sub(value);

  // Take tokens out from circulation
  totalSupply_ = totalSupply_.sub(value);
  totalUpgraded = totalUpgraded.add(value);

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

setUpgradeAgent

Parameters

Name	Type
agent	address

Properties

Visibility public

Mutability transaction

Requirements

null

agent must not be equal to UNKNOWN VALUE

upgradeMaster must be equal to the sender's address

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

UNKNOWN VALUE must be equal to UNKNOWN VALUE

totalSupply_ must be equal to UNKNOWN VALUE

Source Code

function setUpgradeAgent(address agent) external {
  require(
    canUpgrade(),
    "It's required to be in canUpgrade() condition when setting upgrade agent."
  );

  require(
    agent != address(0),
    "Agent is required to be an non-empty address when setting upgrade agent."
  );

  // Only a master can designate the next agent
  require(
    msg.sender == upgradeMaster,
    "Message sender is required to be the upgradeMaster when setting upgrade agent."
  );

  // Upgrade has already begun for an agent
  require(
    getUpgradeState() != UpgradeState.ReadyToUpgrade,
    "Upgrade state is required to not be upgrading when setting upgrade agent."
  );

  require(
    address(upgradeAgent) == address(0),
    "upgradeAgent once set, cannot be reset"
  );

  upgradeAgent = UpgradeAgent(agent);

  // Bad interface
  require(
    upgradeAgent.isUpgradeAgent(),
    "The provided updateAgent contract is required to be compliant to the UpgradeAgent interface method when setting upgrade agent."
  );

  // Make sure that token supplies match in source and target
  require(
    upgradeAgent.originalSupply() == totalSupply_,
    "The provided upgradeAgent contract's originalSupply is required to be equivalent to existing contract's totalSupply_ when setting upgrade agent."
  );

  emit UpgradeAgentSet(upgradeAgent);
}

getUpgradeState

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

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

setUpgradeMaster

Parameters

Name	Type
master	address

Properties

Visibility public

Mutability transaction

Requirements

master must not be equal to UNKNOWN VALUE

upgradeMaster must be equal to the sender's address

Source Code

function setUpgradeMaster(address master) public {
  require(
    master != address(0),
    "The provided upgradeMaster is required to be a non-empty address when setting upgrade master."
  );

  require(
    msg.sender == upgradeMaster,
    "Message sender is required to be the original upgradeMaster when setting (new) upgrade master."
  );

  upgradeMaster = master;
}

canUpgrade

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function canUpgrade() public view returns (bool) {
  return released && super.canUpgrade();
}

renounceOwnership

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 renounceOwnership() public onlyOwner {
  emit OwnershipRenounced(owner);
  owner = address(0);
}

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 {
  _transferOwnership(_newOwner);
}

mint

Parameters

Name	Type
_to	address
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

hasMintPermission checks for the following:

owner must be equal to the sender's address

canMint checks for the following:

mintingFinished must not be true

Source Code

function mint(address _to, uint256 _amount)
  public
  hasMintPermission
  canMint
  returns (bool)
{
  totalSupply_ = totalSupply_.add(_amount);
  balances[_to] = balances[_to].add(_amount);
  emit Mint(_to, _amount);
  emit Transfer(address(0), _to, _amount);
  return true;
}

finishMinting

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

canMint checks for the following:

mintingFinished must not be true

Source Code

function finishMinting() public onlyOwner canMint returns (bool) {
  mintingFinished = true;
  emit MintFinished();
  return true;
}

setReleaseAgent

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

inReleaseState checks for the following:

released must be equal to false

Source Code

function setReleaseAgent(address addr) public onlyOwner inReleaseState(false) {
  // We don't do interface check here as we might want to a normal wallet address to act as a release agent
  releaseAgent = addr;
}

setTransferAgent

Parameters

Name	Type
addr	address
state	bool

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

inReleaseState checks for the following:

released must be equal to false

Source Code

function setTransferAgent(address addr, bool state)
  public
  onlyOwner
  inReleaseState(false)
{
  transferAgents[addr] = state;
}

releaseTokenTransfer

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyReleaseAgent checks for the following:

releaseAgent must be equal to the sender's address

Source Code

function releaseTokenTransfer() public onlyReleaseAgent {
  mintingFinished = true;
  super.releaseTokenTransfer();
}

transfer

Parameters

Name	Type
_to	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

canTransfer checks for the following:

One or more of the following: -released must be true

Source Code

function transfer(address _to, uint256 _value)
  public
  canTransfer(msg.sender)
  returns (bool success)
{
  // Call StandardToken.transfer()
  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:

One or more of the following: -released must be true

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public canTransfer(_from) returns (bool success) {
  // Call StandardToken.transferForm()
  return super.transferFrom(_from, _to, _value);
}

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 Ownable._transferOwnership

Parameters

Name	Type
_newOwner	address

Properties

Visibility internal

Mutability transaction

Requirements

_newOwner must not be equal to UNKNOWN VALUE

Source Code

function _transferOwnership(address _newOwner) internal {
  require(_newOwner != address(0));
  emit OwnershipTransferred(owner, _newOwner);
  owner = _newOwner;
}

internal Ownable._transferOwnership

Parameters

Name	Type
_newOwner	address

Properties

Visibility internal

Mutability transaction

Requirements

_newOwner must not be equal to UNKNOWN VALUE

Source Code

function _transferOwnership(address _newOwner) internal {
  require(_newOwner != address(0));
  emit OwnershipTransferred(owner, _newOwner);
  owner = _newOwner;
}

CRO

ERC20

About link description

Stats

Events (9) keyboard_arrow_up

Approval Event

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

Mint 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.

OwnershipRenounced 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.

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 (20) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

secondarySaleReserveWallet Variable

mainNetLaunchIncentiveReserveWallet Variable

capitalReserveWallet Variable

ecosystemGrantsReserveWallet Variable

airdropReserveWallet Variable

releaseAgent Variable

released Variable

owner Variable

mintingFinished Variable

upgradeMaster Variable

upgradeAgent Variable

totalUpgraded Variable

transferAgents Variable

allowed Variable

balances Variable

totalSupply_ Variable

canUpgrade_ 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

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.

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

increaseApproval 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

decreaseApproval 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

About

Events (9)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

State Variables (20)

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

allowance

Parameters

transferFrom

Parameters

Requirements

approve

Parameters

increaseApproval

Parameters

decreaseApproval

Parameters

upgrade

Parameters

Requirements

setUpgradeAgent

Parameters

Requirements

getUpgradeState

Parameters

setUpgradeMaster

Parameters

Requirements

canUpgrade

Parameters

renounceOwnership

Parameters

Modifiers

transferOwnership

Parameters

Modifiers

Requirements

mint

Parameters

Modifiers

finishMinting

Parameters

Modifiers

setReleaseAgent

Parameters

Modifiers

setTransferAgent

Parameters

Modifiers

releaseTokenTransfer

Parameters

Modifiers