Doctors Coin

0xbf13ff395d686ed7c705a5411cc8e4e21ff2ceb2 Copy

ERC20

This contract is an ERC20 token.

Name Doctors Coin

Symbol DRS

Decimals 18

Total Supply 10,000,000,000 DRS

About

Doctors Coin (DRS) is a cryptocurrency and operates on the Ethereum platform. Doctors Coin has a current supply of 10,000,000,000 with 229,741,603 in circulation. The last known price of Doctors Coin is 0.72067492 USD and is down -1.63 over the last 24 hours. It is currently trading on 14 active market(s) with $4,886,424.90 traded over the last 24 hours. More information can be found at https://drscoin.net/.

Stats

Public Functions 15

Event Types 7

Code Size 12,688 bytes

Events (7)

AirDrop Event

Parameters

_receiver	address
_amount	uint256

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

Burn Event

Parameters

from	address
value	uint256

Mint Event

Parameters

from	address
value	uint256

Transfer Event

Parameters

from	address
to	address
value	uint256

TransferDisabled Event

Parameters

bool

TransferEnabled Event

Parameters

bool

State Variables (11)

owner Variable

address

name Variable

string

symbol Variable

string

decimals Variable

uint8

totalSupply Variable

uint256

TransferAllowed Variable

bool

airDropHistory Variable

mapping(address => uint256)

balanceOf Variable

mapping(address => uint256)

LockList Variable

mapping(address => bool)

LockedTokens Variable

mapping(address => uint256)

_allowance Variable

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

Internal Variable

Functions Expand All Collapse All

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

_to must not be equal to UNKNOWN VALUE

LockList for the sender's address must be equal to false

LockList for _to must be equal to false

TransferAllowed must be equal to true

stage must be greater than or equal to LockedTokens for the sender's address

Source Code

function transfer(address _to, uint256 _value) public returns (bool) {
  _transfer(msg.sender, _to, _value);
  return true;
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

LockList for the sender's address must be equal to false

stage must be greater than or equal to LockedTokens for the sender's address

Source Code

function burn(uint256 _value) public returns (bool) {
  require(LockList[msg.sender] == false, "ERC20: User Locked !");

  uint256 stage;
  stage = balanceOf[msg.sender].sub(
    _value,
    "ERC20: transfer amount exceeds balance"
  );
  require(
    stage >= LockedTokens[msg.sender],
    "ERC20: transfer amount exceeds Senders Locked Amount"
  );

  balanceOf[msg.sender] = balanceOf[msg.sender].sub(
    _value,
    "ERC20: Burn amount exceeds balance."
  );
  totalSupply = totalSupply.sub(
    _value,
    "ERC20: Burn amount exceeds total supply"
  );

  emit Burn(msg.sender, _value);
  emit Transfer(msg.sender, address(0), _value);

  return true;
}

burnFrom

Parameters

Name	Type
Account	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

LockList for the sender's address must be equal to false

LockList for Account must be equal to false

Account must not be equal to UNKNOWN VALUE

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

stage must be greater than or equal to LockedTokens for Account

Source Code

function burnFrom(address Account, uint256 _value)
  public
  returns (bool success)
{
  require(LockList[msg.sender] == false, "ERC20: User Locked !");
  require(LockList[Account] == false, "ERC20: Owner Locked !");
  uint256 stage;
  require(Account != address(0), "ERC20: Burn from the zero address");

  _approve(
    Account,
    msg.sender,
    _allowance[Account][msg.sender].sub(
      _value,
      "ERC20: burn amount exceeds allowance"
    )
  );

  //Do not allow burn if Accounts tokens are locked.
  stage = balanceOf[Account].sub(
    _value,
    "ERC20: Transfer amount exceeds allowance"
  );
  require(
    stage >= LockedTokens[Account],
    "ERC20: Burn amount exceeds accounts locked amount"
  );
  balanceOf[Account] = stage; // Subtract from the sender

  //Deduct burn amount from totalSupply
  totalSupply = totalSupply.sub(
    _value,
    "ERC20: Burn Amount exceeds totalSupply"
  );

  emit Burn(Account, _value);
  emit Transfer(Account, address(0), _value);

  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

_to must not be equal to UNKNOWN VALUE

LockList for the sender's address must be equal to false

LockList for _to must be equal to false

TransferAllowed must be equal to true

stage must be greater than or equal to LockedTokens for the sender's address

Account must not be equal to UNKNOWN VALUE

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

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public returns (bool success) {
  _transfer(_from, _to, _value);
  _approve(
    _from,
    msg.sender,
    _allowance[_from][msg.sender].sub(
      _value,
      "ERC20: transfer amount exceeds allowance"
    )
  );

  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

unapprovbal must be greater than or equal to LockedTokens for the sender's address

Source Code

function approve(address _spender, uint256 _value)
  public
  returns (bool success)
{
  uint256 unapprovbal;

  // Do not allow approval if amount exceeds locked amount
  unapprovbal = balanceOf[msg.sender].sub(
    _value,
    "ERC20: Allowance exceeds balance of approver"
  );
  require(
    unapprovbal >= LockedTokens[msg.sender],
    "ERC20: Approval amount exceeds locked amount "
  );

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

approveAndCall

Parameters

Name	Type
_spender	address
_value	uint256
_extraData	bytes

Properties

Visibility public

Mutability transaction

Source Code

function approveAndCall(
  address _spender,
  uint256 _value,
  bytes memory _extraData
) public returns (bool success) {
  tokenRecipient spender = tokenRecipient(_spender);
  if (approve(_spender, _value)) {
    spender.receiveApproval(msg.sender, _value, address(this), _extraData);
    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 _allowance[_owner][_spender];
}

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), "ERC20 New Owner cannot be zero address");
  owner = newOwner;
}

UserLock

Parameters

Name	Type
Account	address
mode	bool

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function UserLock(address Account, bool mode) public onlyOwner {
  LockList[Account] = mode;
}

LockTokens

Parameters

Name	Type
Account	address
amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function LockTokens(address Account, uint256 amount) public onlyOwner {
  LockedTokens[Account] = amount;
}

UnLockTokens

Parameters

Name	Type
Account	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function UnLockTokens(address Account) public onlyOwner {
  LockedTokens[Account] = 0;
}

mint

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

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

balanceOf for the sender's address must not be equal to 0x0

Source Code

function mint(uint256 _value) public onlyOwner returns (bool success) {
  require(balanceOf[msg.sender] >= _value);
  require(balanceOf[msg.sender] != 0x0); // Check if the sender has enough
  balanceOf[msg.sender] = balanceOf[msg.sender].add(
    _value,
    "ERC20: Addition overflow"
  ); // Subtract from the sender
  totalSupply = totalSupply.add(_value, "ERC20: totalSupply increased ");
  emit Mint(msg.sender, _value);
  return true;
}

dropToken

Parameters

Name	Type
receivers	address[]
values	uint256[]

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

the number of values in receivers must not be equal to 0

the number of values in receivers must be equal to the number of values in values

Source Code

function dropToken(address[] memory receivers, uint256[] memory values)
  public
  onlyOwner
{
  require(receivers.length != 0);
  require(receivers.length == values.length);

  for (uint256 i = 0; i < receivers.length; i++) {
    address receiver = receivers[i];
    uint256 amount = values[i];

    transfer(receiver, amount);
    airDropHistory[receiver] += amount;

    emit AirDrop(receiver, amount);
  }
}

enableTokenTransfer

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 enableTokenTransfer() public onlyOwner {
  TransferAllowed = true;
  emit TransferEnabled(true);
}

disableTokenTransfer

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 disableTokenTransfer() public onlyOwner {
  TransferAllowed = false;
  emit TransferDisabled(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 TOKENERC20._transfer

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility internal

Mutability transaction

Requirements

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

_to must not be equal to UNKNOWN VALUE

LockList for the sender's address must be equal to false

LockList for _to must be equal to false

TransferAllowed must be equal to true

stage must be greater than or equal to LockedTokens for the sender's address

Source Code

function _transfer(
  address _from,
  address _to,
  uint256 _value
) internal {
  uint256 stage;

  require(_from != address(0), "ERC20: transfer from the zero address");
  require(_to != address(0), "ERC20: transfer to the zero address"); // Prevent transfer to 0x0 address. Use burn() instead

  require(LockList[msg.sender] == false, "ERC20: Caller Locked !"); // Check if msg.sender is locked or not
  require(LockList[_from] == false, "ERC20: Sender Locked !");
  require(LockList[_to] == false, "ERC20: Receipient Locked !");
  require(TransferAllowed == true, "ERC20: Transfer enabled false !");

  // Check if sender balance is locked
  stage = balanceOf[_from].sub(
    _value,
    "ERC20: transfer amount exceeds balance"
  );
  require(
    stage >= LockedTokens[_from],
    "ERC20: transfer amount exceeds Senders Locked Amount"
  );

  //Deduct and add balance
  balanceOf[_from] = stage;
  balanceOf[_to] = balanceOf[_to].add(_value, "ERC20: Addition overflow");

  //emit Transfer event
  emit Transfer(_from, _to, _value);
}

internal TOKENERC20._approve

Parameters

Name	Type
owner	address
_spender	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

Account must not be equal to UNKNOWN VALUE

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

Source Code

function _approve(
  address owner,
  address _spender,
  uint256 amount
) internal {
  require(owner != address(0), "ERC20: approve from the zero address");
  require(_spender != address(0), "ERC20: approve to the zero address");

  _allowance[owner][_spender] = amount;
  emit Approval(owner, _spender, amount);
}

Doctors Coin

ERC20

About link description

Stats

Events (7) keyboard_arrow_up

AirDrop Event

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

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.

Mint 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.

TransferDisabled Event

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

TransferEnabled Event

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

State Variables (11) keyboard_arrow_up

owner Variable

name Variable

symbol Variable

decimals Variable

totalSupply Variable

TransferAllowed Variable

airDropHistory Variable

balanceOf Variable

LockList Variable

LockedTokens Variable

_allowance Variable

Functions Expand All Collapse All

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

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

burnFrom 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

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

approveAndCall 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

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

UserLock 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:

Source Code

LockTokens 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 (7)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

State Variables (11)

transfer

Parameters

Requirements

burn

Parameters

Requirements

burnFrom

Parameters

Requirements

transferFrom

Parameters

Requirements

approve

Parameters

Requirements

approveAndCall

Parameters

allowance

Parameters

transferOwnership

Parameters

Modifiers

Requirements

UserLock

Parameters

Modifiers

LockTokens

Parameters

Modifiers

UnLockTokens

Parameters

Modifiers

mint

Parameters

Modifiers

Requirements

dropToken

Parameters

Modifiers

Requirements

enableTokenTransfer

Parameters

Modifiers

disableTokenTransfer

Parameters

Modifiers

internal TOKENERC20._transfer

Parameters

Requirements

internal TOKENERC20._approve

Parameters

Requirements