VeriNews - Blockchain Attested Truth Registry

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

contract VeriNews {
    address public admin;

    struct Publisher {
        string name;
        string domain;
        address pubAddress;
        bool isVerified;
        uint256 reputation;
    }

    struct Article {
        bytes32 articleHash;
        string title;
        string url;
        address publisher;
        uint256 credibilityScore;
        uint256 timestamp;
        uint256 blockNumber;
        uint256 upvotes;
        uint256 downvotes;
        bool exists;
    }

    mapping(address => Publisher) public publishers;
    mapping(bytes32 => Article) public articles;

    function submitArticle(
        string memory _title,
        string memory _url,
        bytes32 _contentHash,
        uint256 _nlpScore
    ) external onlyVerifiedPublisher {
        articles[_contentHash] = Article({
            articleHash: _contentHash,
            title: _title,
            url: _url,
            publisher: msg.sender,
            credibilityScore: _nlpScore,
            timestamp: block.timestamp,
            blockNumber: block.number,
            upvotes: 0,
            downvotes: 0,
            exists: true
        });
    }
}