TMP: MemberID module

[Evert0x]

TMP-2: MemberID

---

tmp: 2
title: Member control module
author: Evert Kors (@Evert0x)
discussions-to: #2
status: Draft
type: Module
created: 2021/01/09
requires (*optional):
replaces (*optional):

---

Simple Summary

Enable Member id's based on uint256 instead of member addresses. Members are able to upgrade their address.

Abstract

The following standard allows members to upgrade their working address while keeping the same member identifier.

Motivation

Upgrade ability of addresses is a valid use case.

Specification

Interface

interface IMemberID {
    event MemberAddressChanged(
        uint256 indexed memberID,
        address indexed previousAddress,
        address indexed newAddress
    );

    function upgradeAddress(address _oldAddress, address _newAddress) external;

    function getAddressByMember(uint256 _member)
        external
        view
        returns (address);

    function getMemberByAddress(address _address)
        external
        view
        returns (uint256);
}

Storage

    bytes32 constant MEMBER_ACCESS_STORAGE_POSITION = keccak256(
        "diamond.standard.member.access.storage"
    );

    struct MemberStorage {
        uint256 memberCounter;
        mapping(address => uint256) addressToMember;
        mapping(uint256 => address) memberToAddress;
    }

Rationale

Backwards Compatibility

Reference Implementation

https://github.com/Evert0x/MemberAccess

Security Considerations

Copyright