---

title: reputationSBT
tags: shamans, ideas

---

My attempt at a shaman, using chatGPT.

---
### GPT Short Summary:

> ReputationSBT is a smart contract that allows creating and managing a token-based reputation system on the Ethereum blockchain.
> It uses OpenZeppelin's ERC1155 and Ownable contracts, and also imports the IBAAL interface. It allows the owner to mint new reputation tokens, to track reputation, to assign token ownership, and to mint shares in a DAO based on the reputation added to the tokens

---

### Detailed Explanation

ReputationSBT is a smart contract that allows creating and managing a token-based reputation system on the Ethereum blockchain. It is built using the Solidity programming language and is designed to run on the Ethereum Virtual Machine (EVM). The contract uses OpenZeppelin's ERC1155 and Ownable contracts, and also imports the IBAAL interface.

The contract allows the owner to mint new reputation tokens using the mint(address _to, string memory projectName, string memory rolePlayed, bool completedTasks, string memory notes, int8 score, string svgImage) function. Each token has properties such as projectName, rolePlayed, completedTasks, notes, score, and svg that can be stored on the blockchain and associated with the tokenId. These properties can be accessed and updated via the reputationData mapping which stores the data of a reputation token by its token ID.

The contract also keeps track of the reputation of each address by maintaining a mapping mapping (address => uint256) public reputation; that stores the total reputation of an address. This allows users to view the reputation of any address on the blockchain.

The contract assigns the ownership of each token to the address passed in the mint function by maintaining a mapping mapping(uint256 => address) public tokenIdToOwner; that stores the owner of a token by its token ID. This allows users to view the owner of any token on the blockchain.

The contract also allows the owner to update the DAO address, to pause and unpause the contract and to mint shares in the DAO based on the amount of reputation added to the NFT. This allows the reputation tokens to have some value in the DAO.

The contract emits events when a new token is minted, when a token is burned, and when a token is updated. This allows external entities to listen to these events and take appropriate actions.

The contract uses the "onlyOwner" modifier to restrict certain function calls to the contract owner, and also uses a "whenNotPaused" modifier to limit function calls when the contract is paused. This ensures that only the contract owner can perform certain sensitive operations and that the contract can be paused if needed.

Overall, the ReputationSBT contract provides a comprehensive solution for creating and managing a token-based reputation system on the Ethereum blockchain. It allows for the creation and management of tokens, the tracking of reputation, and the management of shares in a DAO. It is important to note that this contract is a complex one and thorough testing is needed before deploying it to the mainnet. Also, the IBAAL interface should be implemented by a separate contract that can interact with this contract.

### reputationSBT.sol

pragma solidity ^0.8.7;

import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";

import "./IBAAL.sol";

// Contract ReputationSBT inherits from IERC1155 and Ownable
contract ReputationSBT is IERC1155, Ownable, IBAAL {

    using SafeMath for uint256;

    // Mapping to store the total reputation of an address
    mapping (address => uint256) public reputation;

    struct Reputation {
        string projectName;
        string rolePlayed;
        bool completedTasks;
        string notes;
        int8 score;
        bytes32 ipfsImageHash;
    }

    // Mapping to store the data of a reputation token by its token ID
    mapping(uint256 => Reputation) public reputationData;
    // Mapping to store the owner of a reputation token by its token ID
    mapping(uint256 => address) public tokenIdToOwner;

    bool public paused;

    modifier whenNotPaused() {
        require(!paused, "The contract is paused.");
        _;
    }

    // Variable to store DAO address
    address public daoAddress;
    
    event Mint(address indexed to, uint256 indexed tokenId, uint256 value);
    event Burn(address indexed from, uint256 indexed tokenId, uint256 value);
    event Update(address indexed from, uint256 indexed tokenId, string memory projectName, string memory rolePlayed, bool completedTasks, string memory notes, int8 score, bytes32 ipfsImageHash);
    
    constructor() public {
        require(msg.sender == owner,"only the owner can set the dao address");
        daoAddress = address(0);
        _mint(msg.sender, 1, 1);
    }

    // Function to update DAO address, only contract owner can update the address
    function updateDaoAddress(address _dao) public onlyOwner {
        require(!address(_dao).isZero(),"DAO address should not be zero address");
        daoAddress = _dao;
    }

    // Function to pause the contract, only contract owner can pause the contract
    function pause() public onlyOwner {
        paused = true;
    }

    // Function to unpause the contract, only contract owner can unpause the contract
    function unpause() public onlyOwner {
        paused = false;
    }
    // Function to mint a new reputation token, only contract owner can mint a token
    function mint(address _to, string memory projectName, string memory rolePlayed, bool completedTasks, string memory notes, int8 score, bytes32 ipfsImageHash) public onlyOwner whenNotPaused {
        
        // Require that the address passed in is not the zero address
        require(!address(_to).isZero(), "To address is the zero address");
        
        // Require that the score passed in is between 1 and 10, inclusive
        require(score >= 1 && score <= 10, "Invalid reputation score. Must be between 1 and 10.");
        
        // Create a new token ID by incrementing the current length of the reputationData array
        uint256 tokenId = reputationData.length.add(1);
        
        // Set the properties of the new token using the passed in parameters
        reputationData[tokenId].projectName = projectName;
        reputationData[tokenId].rolePlayed = rolePlayed;
        reputationData[tokenId].completedTasks = completedTasks;
        reputationData[tokenId].notes = notes;
        reputationData[tokenId].score = score;
        reputationData[tokenId].ipfsImageHash = ipfsImageHash;
        
        // Assign the ownership of the token to the passed in address
        tokenIdToOwner[tokenId] = _to;
        
        // Increment the total reputation of the passed in address
        reputation[_to] = reputation[_to].add(score);
    if (mintShares) {
        // Mint shares in the DAO based on the amount of reputation added to the NFT
        IBAAL(daoAddress).mintShares(new address[]{_to}, new uint256[]{score});
    } else {
        // Mint loot in the DAO based on the amount of reputation added to the NFT
        IBAAL(daoAddress).mintLoot(new address[]{_to}, new uint256[]{score});
    }
        // Emit the Mint event
        emit Mint(_to, tokenId, score);
    }
    
    // Function to burn a reputation token, only contract owner can burn a token
    function burn(address _from, uint256 tokenId) public onlyOwner whenNotPaused {
        
        // Require that the caller of the function is the owner of the token being burned
        require(tokenIdToOwner[tokenId] == _from, "Caller is not the owner of the token.");
        
        // Get the score of the token being burned
        uint256 value = reputationData[tokenId].score;
        
        // Decrement the total reputation of the owner of the token being burned
        reputation[_from] = reputation[_from].sub(value);
        
        // Delete the data of the token being burned
        delete reputationData[tokenId];
        delete tokenIdToOwner[tokenId];
        
        // Emit the Burn event
        emit Burn(_from, tokenId, value);
    }
    
    // Function to update the properties of a reputation token, only contract owner can update a token
    function update(uint256 tokenId, string memory projectName, string memory rolePlayed, bool completedTasks, string memory notes, int8 score, bytes32 ipfsImageHash) public onlyOwner whenNotPaused {
        
        // Require that the score passed in is between 1 and 10, inclusive
        require(score >= 1 && score <= 10, "Invalid reputation score. Must be between 1 and 10.");
        
        // Get the current score of the token being updated
        uint256 currentValue = reputationData[tokenId].score;
        
        // Get the address of the owner of the token being updated
        address _from = tokenIdToOwner[tokenId];
        
        // Decrement the total reputation of the owner of the token being updated by the current score
        reputation[_from] = reputation[_from].sub(currentValue);
        
        // Update the properties of the token using the passed in parameters
        reputationData[tokenId].projectName = projectName;
        reputationData[tokenId].rolePlayed = rolePlayed;
        reputationData[tokenId].completedTasks = completedTasks;
        reputationData[tokenId].notes = notes;
        reputationData[tokenId].score = score;
        reputationData[tokenId].ipfsImageHash = ipfsImageHash;
        
        // Increment the total reputation of the owner of the token being updated by the new score
        reputation[_from] = reputation[_from].add(score);
        
        // Emit the Update event
        emit Update(_from, tokenId, projectName, rolePlayed, completedTasks, notes, score, ipfsImageHash);
    }
}