Amber Token

0x4dc3643dbc642b72c158e7f3d2ff232df61cb6ce Copy

ERC20

This contract is an ERC20 token.

Name Amber Token

Symbol AMB

Decimals 18

Total Supply 361,477,438 AMB

About

Stats

Public Functions 11

Event Types 5

Code Size 18,851 bytes

Events (5)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Minted Event

Parameters

who	address
value	uint

MintedLocked Event

Parameters

who	address
value	uint

NewOwner Event

Parameters

old	address
current	address

Transfer Event

Parameters

from	address
to	address
value	uint256

Structs (1)

Account Struct

Members

balance	uint
allowanceOf	mapping(address => uint)
tokensPerPhase	uint
nextPhase	uint

Constants (5)

name Constant

string

Amber Token

decimals Constant

uint8

symbol Constant

string

AMB

PHASE_DURATION Constant

uint

180 days

UNLOCK_PHASES Constant

uint

State Variables (5)

locked Variable

bool

phaseStart Variable

uint

totalSupply Variable

uint

owner Variable

address

accounts Variable

mapping(address => Account)

Internal Variable

Functions Expand All Collapse All

setOwner

Parameters

Name	Type
_new	address

Properties

Visibility public

Mutability transaction

Modifiers

only_owner checks for the following:

owner must be equal to the sender's address

Source Code

function setOwner(address _new) only_owner {
  NewOwner(owner, _new);
  owner = _new;
}

balanceOf

Parameters

Name	Type
_who	address

Properties

Visibility public

Mutability constant

Source Code

function balanceOf(address _who) constant returns (uint256) {
  return accounts[_who].balance;
}

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

when_owns checks for the following:

_value must be less than or equal to undefined.balance

when_liquid checks for the following:

locked must not be true

Source Code

function transfer(address _to, uint256 _value)
  when_owns(msg.sender, _value)
  when_liquid
  returns (bool)
{
  Transfer(msg.sender, _to, _value);
  accounts[msg.sender].balance -= _value;
  accounts[_to].balance += _value;

  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

when_owns checks for the following:

_value must be less than or equal to undefined.balance

when_has_allowance checks for the following:

_value must be less than or equal to undefined.allowanceOf for the sender's address

when_liquid checks for the following:

locked must not be true

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
)
  when_owns(_from, _value)
  when_has_allowance(_from, msg.sender, _value)
  when_liquid
  returns (bool)
{
  Transfer(_from, _to, _value);
  accounts[_from].allowanceOf[msg.sender] -= _value;
  accounts[_from].balance -= _value;
  accounts[_to].balance += _value;

  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

when_liquid checks for the following:

locked must not be true

Requirements

One or more of the following: - undefined.allowanceOf for _spender must be equal to 0 - OR _value must be equal to 0

Source Code

function approve(address _spender, uint256 _value) when_liquid returns (bool) {
  // Mitigate the race condition described here:
  // https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
  require(_value == 0 || accounts[msg.sender].allowanceOf[_spender] == 0);
  Approval(msg.sender, _spender, _value);
  accounts[msg.sender].allowanceOf[_spender] = _value;

  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

function allowance(address _owner, address _spender)
  constant
  returns (uint256)
{
  return accounts[_owner].allowanceOf[_spender];
}

mint

Parameters

Name	Type
_who	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

only_owner checks for the following:

owner must be equal to the sender's address

Source Code

function mint(address _who, uint256 _value) public only_owner {
  accounts[_who].balance += _value;
  totalSupply += _value;
  Minted(_who, _value);
}

mintLocked

Parameters

Name	Type
_who	address
_value	uint

Properties

Visibility public

Mutability transaction

Modifiers

only_owner checks for the following:

owner must be equal to the sender's address

Source Code

function mintLocked(address _who, uint256 _value) public only_owner {
  accounts[_who].tokensPerPhase += _value / UNLOCK_PHASES;
  totalSupply += _value;
  MintedLocked(_who, _value);
}

finalise

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

only_owner checks for the following:

owner must be equal to the sender's address

Source Code

function finalise() public only_owner {
  locked = false;
  owner = 0;
  phaseStart = now;
}

currentPhase

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Requirements

phaseStart must be greater than 0

Source Code

function currentPhase() public constant returns (uint256) {
  require(phaseStart > 0);
  uint256 p = (now - phaseStart) / PHASE_DURATION;
  return p > UNLOCK_PHASES ? UNLOCK_PHASES : p;
}

unlockTokens

Parameters

Name	Type
_who	address

Properties

Visibility public

Mutability transaction

Source Code

function unlockTokens(address _who) public {
  uint256 phase = currentPhase();
  uint256 tokens = accounts[_who].tokensPerPhase;
  uint256 nextPhase = accounts[_who].nextPhase;
  if (tokens > 0 && phase > nextPhase) {
    accounts[_who].balance += tokens * (phase - nextPhase);
    accounts[_who].nextPhase = phase;
  }
}

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.

Amber Token

ERC20

About

Stats

Events (5) keyboard_arrow_up

Approval Event

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

Minted Event

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

MintedLocked Event

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

NewOwner 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.

Structs (1) keyboard_arrow_up

Account Struct

Members

Constants (5) keyboard_arrow_up

name Constant

decimals Constant

symbol Constant

PHASE_DURATION Constant

UNLOCK_PHASES Constant

State Variables (5) keyboard_arrow_up

locked Variable

phaseStart Variable

totalSupply Variable

owner Variable

accounts Variable

Functions Expand All Collapse All

setOwner 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.

only_owner checks for the following:

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

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

when_owns checks for the following:

when_liquid checks for the following:

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.

when_owns checks for the following:

when_has_allowance checks for the following:

when_liquid checks for the following:

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.

when_liquid 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

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

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.

only_owner checks for the following:

Source Code

mintLocked 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.

only_owner checks for the following:

Source Code

finalise keyboard_arrow_up

Events (5)

Parameters

Parameters

Parameters

Parameters

Parameters

Structs (1)

Constants (5)

State Variables (5)

setOwner

Parameters

Modifiers

balanceOf

Parameters

transfer

Parameters

Modifiers

transferFrom

Parameters

Modifiers

approve

Parameters

Modifiers

Requirements

allowance

Parameters

mint

Parameters

Modifiers

mintLocked

Parameters

Modifiers

finalise

Parameters

Modifiers

currentPhase

Parameters

Requirements

unlockTokens

Parameters