DREP

0x3ab6ed69ef663bd986ee59205ccad8a20f98b4c2 Copy

ERC20

This contract is an ERC20 token.

Name DREP

Symbol DREP

Decimals 18

Total Supply 100,000,000 DREP

About

Drep [new] (DREP) is a cryptocurrency and operates on the Ethereum platform. Drep [new] has a current supply of 100,000,000 with 39,900,000 in circulation. The last known price of Drep [new] is 0.45708745 USD and is down -16.13 over the last 24 hours. It is currently trading on 8 active market(s) with $4,779,527.62 traded over the last 24 hours. More information can be found at https://www.drep.org/.

Stats

Public Functions 9

Event Types 4

Code Size 4,150 bytes

Events (4)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

Transfer Event

Parameters

_from	address
_to	address
_value	uint256

Upgrade Event

Parameters

_from	address
_value	uint256

Withdraw Event

Parameters

_to	address
_value	uint256

Constants (1)

initialSupply Constant

uint256

100000000

State Variables (10)

name Variable

string

symbol Variable

string

decimals Variable

uint8

totalSupply Variable

uint256

stopped Variable

bool

deadline Variable

uint256

balanceOf Variable

mapping(address => uint256)

allowance Variable

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

Internal Variable

owner Variable

address

Internal Variable

oldDrepAddr Variable

address

Internal Variable

Functions Expand All Collapse All

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isRunning checks for the following:

stopped must not be true

validAddress checks for the following:

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

Requirements

_to must not be equal to UNKNOWN VALUE

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

balanceOf for _to + _value must be greater than or equal to balanceOf for _to

Source Code

function transfer(address _to, uint256 _value)
  public
  isRunning
  validAddress
  returns (bool success)
{
  require(_to != address(0));
  require(balanceOf[msg.sender] >= _value);
  require(balanceOf[_to] + _value >= balanceOf[_to]);
  balanceOf[msg.sender] -= _value;
  balanceOf[_to] += _value;
  emit Transfer(msg.sender, _to, _value);
  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isRunning checks for the following:

stopped must not be true

validAddress checks for the following:

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

Requirements

_to must not be equal to UNKNOWN VALUE

_value must be less than or equal to balanceOf for _from

balanceOf for _to + _value must be greater than or equal to balanceOf for _to

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

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public isRunning validAddress returns (bool success) {
  require(_to != address(0));
  require(balanceOf[_from] >= _value);
  require(balanceOf[_to] + _value >= balanceOf[_to]);
  require(allowance[_from][msg.sender] >= _value);
  allowance[_from][msg.sender] -= _value;
  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;
  emit Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isRunning checks for the following:

stopped must not be true

validAddress checks for the following:

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

Requirements

One or more of the following: - allowance 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
  isRunning
  validAddress
  returns (bool success)
{
  require(_value == 0 || allowance[msg.sender][_spender] == 0);
  allowance[msg.sender][_spender] = _value;
  emit Approval(msg.sender, _spender, _value);
  return true;
}

stop

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

ownerOnly checks for the following:

owner must be equal to the sender's address

Source Code

function stop() public ownerOnly {
  stopped = true;
}

start

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

ownerOnly checks for the following:

owner must be equal to the sender's address

Source Code

function start() public ownerOnly {
  stopped = false;
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isRunning checks for the following:

stopped must not be true

validAddress checks for the following:

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

Requirements

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

totalSupply must be greater than or equal to _value

Source Code

function burn(uint256 _value) public isRunning validAddress {
  require(balanceOf[msg.sender] >= _value);
  require(totalSupply >= _value);
  balanceOf[msg.sender] -= _value;
  totalSupply -= _value;
}

upgrade

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Requirements

deadline must be greater than or equal to block.number

Source Code

function upgrade() public {
  require(block.number <= deadline, "upgrade finished");
  uint256 balance = IERC20(oldDrepAddr).balanceOf(msg.sender);
  if (balance > 0) {
    IERC20(oldDrepAddr).transferFrom(msg.sender, address(this), balance);
    IERC20(oldDrepAddr).burn(balance);
    uint256 value = balance / 100;
    IERC20(address(this)).transfer(msg.sender, value);
    emit Upgrade(msg.sender, value);
  }
}

setDeadline

Parameters

Name	Type
_deadline	uint256

Properties

Visibility public

Mutability transaction

Modifiers

ownerOnly checks for the following:

owner must be equal to the sender's address

Source Code

function setDeadline(uint256 _deadline) public ownerOnly {
  deadline = _deadline;
}

withdraw

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

ownerOnly checks for the following:

owner must be equal to the sender's address

Requirements

deadline must be less than block.number

Source Code

function withdraw() public ownerOnly {
  require(block.number > deadline, "time too early");
  uint256 balance = balanceOf[address(this)];
  IERC20(address(this)).transfer(owner, balance);
  emit Withdraw(owner, balance);
}

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.

DREP

ERC20

About link

Stats

Events (4) 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.

Upgrade Event

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

Withdraw Event

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

Constants (1) keyboard_arrow_up

initialSupply Constant

State Variables (10) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

totalSupply Variable

stopped Variable

deadline Variable

balanceOf Variable

allowance Variable

owner Variable

oldDrepAddr 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

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

isRunning checks for the following:

validAddress 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

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

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

isRunning checks for the following:

validAddress 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

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

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

isRunning checks for the following:

validAddress 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

stop 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.

ownerOnly checks for the following:

Source Code

start 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.

ownerOnly checks for the following:

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

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

isRunning checks for the following:

validAddress 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

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

setDeadline 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.

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (1)

State Variables (10)

transfer

Parameters

Modifiers

Requirements

transferFrom

Parameters

Modifiers

Requirements

approve

Parameters

Modifiers

Requirements

stop

Parameters

Modifiers

start

Parameters

Modifiers

burn

Parameters

Modifiers

Requirements

upgrade

Parameters

Requirements

setDeadline

Parameters

Modifiers

withdraw

Parameters

Modifiers

Requirements