ERC644 Token

The idea is to abstract user balances away from the token's business logic making the tokens upgradeable, and opens the door for modular functionality to be added over time.

Preamble

EIP: <to be assigned>
Title: Token standard for upgradeable and modular tokens
Type: Standard Track
Category ERC
Status: Draft
Created: 2017/06/16

Abstract

As it stands now, if any ERC20 tokens were to encounter any sort of fatal flaw, ever balance on that token would be at risk and recovering from the flaw would be cumbersome at best. This ERC proposes a way to accomplish the tasks below by abstracting the user balances away from the business logic.

  • Makes tokens upgradeable

  • Allows for modular functionality

  • Creates a way to insulate user balances from exploitable code

Motivation

Protecting consumers from potential exploits.

Specification

Balances.sol

Methods

getBalances

Returns an account's token balance.

function getBalance(address _acct) returns(uint balance)

incBalance

Increases an account's token balance.

function incBalance(address _acct, uint _val) onlyModule returns(bool success)

decBalance

Decreases an account's token balance.

function decBalance(address _acct, uint _val) onlyModule returns(bool success)

getAllowance

Returns an accounts allowed balance to be spent on behalf of owner.

function getAllowance(address _owner, address _spender) returns(uint remaining)

setApprove

Allows _spender to spend from _sender's account. When the function is called it over writes the current allowance with _value`.

function setApprove(address _sender, address _spender, uint256 _value) onlyModule returns(bool success)

decApprove

Decreases an accounts allowance amount by _value.

function decApprove(address _from, address _spender, uint _value) onlyModule returns(bool success)

getModule

Returns if module _acct is active or not.

function getModule(address _acct) returns (bool success)

setModule

Sets module _acct to true or false.

function setModule(address _acct, bool _set) onlyRoot returns(bool success)

getTotalSupply

Returns the total supply.

function getTotalSupply() returns(uint)

incTotalSupply

Increases the total supply.

function incTotalSupply(uint _val) onlyModule returns(bool success)

decTotalSupply

Decreases the total supply.

function decTotalSupply(uint _val) onlyModule returns(bool success)

transferRoot

Transfers to a new account.

function transferRoot(address _new) onlyRoot returns(bool success)

Events

BalanceAdj

Triggered when balances are adjusted.

event BalanceAdj(address indexed Module, address indexed Account, uint Amount, string Polarity);

ModuleSet

Triggered when modules are updated.

event ModuleSet(address indexed Module, bool indexed Set);

Implementation

https://github.com/expanse-org/Tokens/tree/master/Token_Contracts/contracts