SENTinel

0xa44e5137293e855b1b7bc7e2c6f8cd796ffcb037 Copy

ERC20

This contract is an ERC20 token.

Name SENTinel

Symbol SENT

Decimals 8

Total Supply 1,999,970,000 SENT

About

Sentinel (DVPN) is a cryptocurrency and operates on the Ethereum platform. Sentinel has a current supply of 11,120,325,909 with 3,368,945,513 in circulation. The last known price of Sentinel is 0.02031883 USD and is up 13.17 over the last 24 hours. It is currently trading on 5 active market(s) with $325,462.54 traded over the last 24 hours. More information can be found at https://sentinel.co/.

Stats

Public Functions 9

Event Types 2

Code Size 4,716 bytes

Events (2)

Burn Event

Parameters

from	address
value	uint256

Transfer Event

Parameters

from	address
to	address
value	uint256

State Variables (8)

owner Variable

address

name Variable

string

symbol Variable

string

decimals Variable

uint8

totalSupply Variable

uint256

services Variable

mapping(bytes32 => address)

balanceOf 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

_to must not be equal to 0x0

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

_to must not be equal to the sender's address

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

balanceOf for _to + _value must be greater than balanceOf for _to

previousBalances must be equal to balanceOf for the sender's address + balanceOf for _to

Source Code

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

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

_to must not be equal to 0x0

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

_to must not be equal to the sender's address

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

balanceOf for _to + _value must be greater than balanceOf for _to

previousBalances must be equal to balanceOf for the sender's address + balanceOf for _to

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public returns (bool success) {
  require(_value <= allowance[_from][msg.sender]);

  allowance[_from][msg.sender] -= _value;

  _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 success)
{
  allowance[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 _extraData
) public returns (bool success) {
  tokenRecipient spender = tokenRecipient(_spender);

  if (approve(_spender, _value)) {
    spender.receiveApproval(msg.sender, _value, this, _extraData);

    return true;
  }
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

Source Code

function burn(uint256 _value) public returns (bool success) {
  require(balanceOf[msg.sender] >= _value);

  balanceOf[msg.sender] -= _value;
  totalSupply -= _value;

  Burn(msg.sender, _value);

  return true;
}

burnFrom

Parameters

Name	Type
_from	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_value must be less than or equal to balanceOf for _from

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

Source Code

function burnFrom(address _from, uint256 _value) public returns (bool success) {
  require(balanceOf[_from] >= _value);
  require(_value <= allowance[_from][msg.sender]);

  balanceOf[_from] -= _value;
  allowance[_from][msg.sender] -= _value;
  totalSupply -= _value;

  Burn(_from, _value);

  return true;
}

transferOwnership

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

_owner must not be equal to 0x0

Source Code

function transferOwnership(address _owner) public onlyOwner {
  require(_owner != 0x0);

  owner = _owner;
}

deployService

Parameters

Name	Type
_serviceName	bytes32
_serviceAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function deployService(bytes32 _serviceName, address _serviceAddress)
  public
  onlyOwner
{
  services[_serviceName] = _serviceAddress;
}

payService

Parameters

Name	Type
_serviceName	bytes32
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

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

services for _serviceName must not be equal to 0x0

the sender's address must be equal to services for _serviceName

_from must not be equal to 0x0

_to must not be equal to 0x0

_value must be less than or equal to balanceOf for _from

balanceOf for _to + _value must be greater than balanceOf for _to

previousBalances must be equal to balanceOf for _from + balanceOf for _to

Source Code

function payService(
  bytes32 _serviceName,
  address _from,
  address _to,
  uint256 _value
) public {
  require(msg.sender != 0x0);
  require(services[_serviceName] != 0x0);
  require(msg.sender == services[_serviceName]);
  require(_from != 0x0);
  require(_to != 0x0);
  require(balanceOf[_from] >= _value);
  require(balanceOf[_to] + _value > balanceOf[_to]);

  uint256 previousBalances = balanceOf[_from] + balanceOf[_to];

  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;

  Transfer(_from, _to, _value);

  assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}

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 ERC20Token._transfer

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility internal

Mutability transaction

Requirements

_to must not be equal to 0x0

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

_to must not be equal to the sender's address

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

balanceOf for _to + _value must be greater than balanceOf for _to

previousBalances must be equal to balanceOf for the sender's address + balanceOf for _to

Source Code

function _transfer(
  address _from,
  address _to,
  uint256 _value
) internal {
  require(_to != 0x0);
  require(_from != 0x0);
  require(_from != _to);
  require(balanceOf[_from] >= _value);
  require(balanceOf[_to] + _value > balanceOf[_to]);

  uint256 previousBalances = balanceOf[_from] + balanceOf[_to];

  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;

  Transfer(_from, _to, _value);

  assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}

SENTinel

ERC20

About link description

Stats

Events (2) keyboard_arrow_up

Burn 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.

State Variables (8) keyboard_arrow_up

owner Variable

name Variable

symbol Variable

decimals Variable

totalSupply Variable

services Variable

balanceOf 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

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

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

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

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

deployService 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

payService 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

Internal Functions Expand All Collapse All

internal ERC20Token._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

CONNECT WITH US

SUBSCRIBE TO THE BLOCKWELL NEWSLETTER TO RECEIVE UPDATES AND VALUABLE RESOURCES

About

Events (2)

Parameters

Parameters

State Variables (8)

transfer

Parameters

Requirements

transferFrom

Parameters

Requirements

approve

Parameters

approveAndCall

Parameters

burn

Parameters

Requirements

burnFrom

Parameters

Requirements

transferOwnership

Parameters

Modifiers

Requirements

deployService

Parameters

Modifiers

payService

Parameters

Requirements

internal ERC20Token._transfer

Parameters

Requirements