Aragon Network Token

0xa117000000f279d81a1d3cc75430faa017fa5a2e Copy

ERC20

This contract is an ERC20 token.

Name Aragon Network Token

Symbol ANT

Decimals 18

Total Supply 40,073,107 ANT

About

Aragon (ANT) is a cryptocurrency and operates on the Ethereum platform. Aragon has a current supply of 39,609,523.80952381 with 39,609,522.80952381 in circulation. The last known price of Aragon is 3.48887304 USD and is up 2.19 over the last 24 hours. It is currently trading on 71 active market(s) with $10,981,243.60 traded over the last 24 hours. More information can be found at https://aragon.org/.

Stats

Public Functions 10

Event Types 4

Code Size 8,452 bytes

Library Use

Uses SafeMath for uint256.

Events (4)

Approval Event

Parameters

owner	address
spender	address
value	uint256

AuthorizationUsed Event

Parameters

authorizer	address
nonce	bytes32

ChangeMinter Event

Parameters

minter

address

Transfer Event

Parameters

from	address
to	address
value	uint256

Constants (8)

EIP712DOMAIN_HASH Constant

bytes32

0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f

NAME_HASH Constant

bytes32

0x711a8013284a3c0046af6c0d6ed33e8bbc2c7a11d615cf4fdc8b1ac753bda618

VERSION_HASH Constant

bytes32

0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6

PERMIT_TYPEHASH Constant

bytes32

0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9

TRANSFER_WITH_AUTHORIZATION_TYPEHASH Constant

bytes32

0x7c7c6cdb67a18743f49ec6fa9b35f50d52ed05cbed4cc592e13b44501c1a2267

name Constant

string

Aragon Network Token

symbol Constant

string

ANT

decimals Constant

uint8

State Variables (6)

minter Variable

address

totalSupply Variable

uint256

balanceOf Variable

mapping(address => uint256)

nonces Variable

mapping(address => uint256)

allowance Variable

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

Internal Variable

authorizationState Variable

mapping(address => mapping(bytes32 => bool))

Internal Variable

Functions Expand All Collapse All

getChainId

Parameters

This function has no parameters.

Properties

Visibility public

Mutability pure

Source Code

function getChainId() public pure returns (uint256 chainId) {
  assembly {
    chainId := chainid()
  }
}

getDomainSeparator

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function getDomainSeparator() public view returns (bytes32) {
  return
    keccak256(
      abi.encode(
        EIP712DOMAIN_HASH,
        NAME_HASH,
        VERSION_HASH,
        getChainId(),
        address(this)
      )
    );
}

mint

Parameters

Name	Type
to	address
value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinter checks for the following:

minter must be equal to the sender's address

Source Code

function mint(address to, uint256 value) external onlyMinter returns (bool) {
  _mint(to, value);
  return true;
}

changeMinter

Parameters

Name	Type
newMinter	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyMinter checks for the following:

minter must be equal to the sender's address

Source Code

function changeMinter(address newMinter) external onlyMinter {
  _changeMinter(newMinter);
}

burn

Parameters

Name	Type
value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function burn(uint256 value) external returns (bool) {
  _burn(msg.sender, value);
  return true;
}

approve

Parameters

Name	Type
spender	address
value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function approve(address spender, uint256 value) external returns (bool) {
  _approve(msg.sender, spender, value);
  return true;
}

transfer

Parameters

Name	Type
to	address
value	uint256

Properties

Visibility public

Mutability transaction

Requirements

to must not be equal to UNKNOWN VALUE

Source Code

function transfer(address to, uint256 value) external returns (bool) {
  _transfer(msg.sender, to, value);
  return true;
}

transferFrom

Parameters

Name	Type
from	address
to	address
value	uint256

Properties

Visibility public

Mutability transaction

Requirements

to must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address from,
  address to,
  uint256 value
) external returns (bool) {
  uint256 fromAllowance = allowance[from][msg.sender];
  if (fromAllowance != uint256(-1)) {
    // Allowance is implicitly checked with SafeMath's underflow protection
    allowance[from][msg.sender] = fromAllowance.sub(value);
  }
  _transfer(from, to, value);
  return true;
}

permit

Parameters

Name	Type
owner	address
spender	address
value	uint256
deadline	uint256
v	uint8
r	bytes32
s	bytes32

Properties

Visibility public

Mutability transaction

Requirements

deadline must be greater than or equal to block.timestamp

recoveredAddress must be equal to owner

recoveredAddress must not be equal to UNKNOWN VALUE

Source Code

function permit(
  address owner,
  address spender,
  uint256 value,
  uint256 deadline,
  uint8 v,
  bytes32 r,
  bytes32 s
) external {
  require(deadline >= block.timestamp, "ANTV2:AUTH_EXPIRED");

  bytes32 encodeData = keccak256(
    abi.encode(
      PERMIT_TYPEHASH,
      owner,
      spender,
      value,
      nonces[owner]++,
      deadline
    )
  );
  _validateSignedData(owner, encodeData, v, r, s);

  _approve(owner, spender, value);
}

transferWithAuthorization

Parameters

Name	Type
from	address
to	address
value	uint256
validAfter	uint256
validBefore	uint256
nonce	bytes32
v	uint8
r	bytes32
s	bytes32

Properties

Visibility public

Mutability transaction

Requirements

validAfter must be less than block.timestamp

validBefore must be greater than block.timestamp

authorizationState for from for nonce must not be true

recoveredAddress must be equal to owner

recoveredAddress must not be equal to UNKNOWN VALUE

to must not be equal to UNKNOWN VALUE

Source Code

function transferWithAuthorization(
  address from,
  address to,
  uint256 value,
  uint256 validAfter,
  uint256 validBefore,
  bytes32 nonce,
  uint8 v,
  bytes32 r,
  bytes32 s
) external {
  require(block.timestamp > validAfter, "ANTV2:AUTH_NOT_YET_VALID");
  require(block.timestamp < validBefore, "ANTV2:AUTH_EXPIRED");
  require(!authorizationState[from][nonce], "ANTV2:AUTH_ALREADY_USED");

  bytes32 encodeData = keccak256(
    abi.encode(
      TRANSFER_WITH_AUTHORIZATION_TYPEHASH,
      from,
      to,
      value,
      validAfter,
      validBefore,
      nonce
    )
  );
  _validateSignedData(from, encodeData, v, r, s);

  authorizationState[from][nonce] = true;
  emit AuthorizationUsed(from, nonce);

  _transfer(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 ANTv2._validateSignedData

Parameters

Name	Type
signer	address
encodeData	bytes32
v	uint8
r	bytes32
s	bytes32

Properties

Visibility internal

Mutability view

Requirements

recoveredAddress must be equal to owner

recoveredAddress must not be equal to UNKNOWN VALUE

Source Code

function _validateSignedData(
  address signer,
  bytes32 encodeData,
  uint8 v,
  bytes32 r,
  bytes32 s
) internal view {
  bytes32 digest = keccak256(
    abi.encodePacked("\x19\x01", getDomainSeparator(), encodeData)
  );
  address recoveredAddress = ecrecover(digest, v, r, s);
  // Explicitly disallow authorizations for address(0) as ecrecover returns address(0) on malformed messages
  require(
    recoveredAddress != address(0) && recoveredAddress == signer,
    "ANTV2:INVALID_SIGNATURE"
  );
}

internal ANTv2._changeMinter

Parameters

Name	Type
newMinter	address

Properties

Visibility internal

Mutability transaction

Source Code

function _changeMinter(address newMinter) internal {
  minter = newMinter;
  emit ChangeMinter(newMinter);
}

internal ANTv2._mint

Parameters

Name	Type
to	address
value	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function _mint(address to, uint256 value) internal {
  totalSupply = totalSupply.add(value);
  balanceOf[to] = balanceOf[to].add(value);
  emit Transfer(address(0), to, value);
}

internal ANTv2._burn

Parameters

Name	Type
from	address
value	uint

Properties

Visibility internal

Mutability transaction

Source Code

function _burn(address from, uint256 value) internal {
  // Balance is implicitly checked with SafeMath's underflow protection
  balanceOf[from] = balanceOf[from].sub(value);
  totalSupply = totalSupply.sub(value);
  emit Transfer(from, address(0), value);
}

internal ANTv2._approve

Parameters

Name	Type
owner	address
spender	address
value	uint256

Properties

Visibility private

Mutability transaction

Source Code

function _approve(
  address owner,
  address spender,
  uint256 value
) private {
  allowance[owner][spender] = value;
  emit Approval(owner, spender, value);
}

internal ANTv2._transfer

Parameters

Name	Type
from	address
to	address
value	uint256

Properties

Visibility private

Mutability transaction

Requirements

to must not be equal to UNKNOWN VALUE

Source Code

function _transfer(
  address from,
  address to,
  uint256 value
) private {
  require(
    to != address(this) && to != address(0),
    "ANTV2:RECEIVER_IS_TOKEN_OR_ZERO"
  );

  // Balance is implicitly checked with SafeMath's underflow protection
  balanceOf[from] = balanceOf[from].sub(value);
  balanceOf[to] = balanceOf[to].add(value);
  emit Transfer(from, to, value);
}

Aragon Network Token

ERC20

About link description

Stats

Library Use

Events (4) keyboard_arrow_up

Approval Event

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

AuthorizationUsed Event

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

ChangeMinter 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.

Constants (8) keyboard_arrow_up

EIP712DOMAIN_HASH Constant

NAME_HASH Constant

VERSION_HASH Constant

PERMIT_TYPEHASH Constant

TRANSFER_WITH_AUTHORIZATION_TYPEHASH Constant

name Constant

symbol Constant

decimals Constant

State Variables (6) keyboard_arrow_up

minter Variable

totalSupply Variable

balanceOf Variable

nonces Variable

allowance Variable

authorizationState Variable

Functions Expand All Collapse All

getChainId 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

getDomainSeparator 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

mint 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.

onlyMinter checks for the following:

Source Code

changeMinter 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.

onlyMinter 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

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

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

permit 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

transferWithAuthorization 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

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (8)

State Variables (6)

getChainId

Parameters

getDomainSeparator

Parameters

mint

Parameters

Modifiers

changeMinter

Parameters

Modifiers

burn

Parameters

approve

Parameters

transfer

Parameters

Requirements

transferFrom

Parameters

Requirements

permit

Parameters

Requirements

transferWithAuthorization

Parameters

Requirements

internal ANTv2._validateSignedData

Parameters

Requirements

internal ANTv2._changeMinter

Parameters

internal ANTv2._mint

Parameters

internal ANTv2._burn

Parameters

internal ANTv2._approve

Parameters

internal ANTv2._transfer

Parameters

Requirements