Multisig Ownable

Opensea only allows EOAs to make changes to collections, which makes it impossible to use multisigs to secure NFT contracts since when you want to make changes you need to transfer ownership to an EOA, who can just keep ownership forever and never give it back, enabling them to set high royalties to themselves and rug the project.

This contract establishes a second owner that can change the EOA owner, this way a multisig or an on-chain DAO can give ownership to an EOA and later claim it back, making it impossible to rug.

In short, this contract creates a dual ownership model with an admin that can be set to a multisig or DAO.

Usage

Just import MultisigOwnable into your contract and use the onlyRealOwner modifier for any functions that need to have restricted access.

Example

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "../MultisigOwnable.sol";

contract Example is ERC721, MultisigOwnable {
    constructor()
        ERC721("Mock NFT", "MNFT")
    {}

    function retrieveFunds(address payable to) external onlyRealOwner {
        to.transfer(address(this).balance);
    }
}

License

All code has been licensed under CC0, just like tubby cats themselves.