Simple asset management smart contract

pragma solidity ^0.4.24;

contract AssetTracker {
   
   // define new Asset object
    struct Asset {
        uint256  uuid;
        string name;
        string manufacturer;
        uint256 timestamp;
    }
    
    // create a new asset mapping
    mapping (uint256 => Asset) assets;
    mapping (uint256 => bytes32[]) assetToCheckpoint;
    
    // create new asset
    function createAsset(uint uuid, string name, string manufacturer) {
        assets[uuid] = Asset(uuid, name, manufacturer, now);
    }
    
    // get asset, view function 
    function getAsset(uint256 uuid) view returns(uint256, string, string, uint256) {
        return (assets[uuid].uuid, assets[uuid].name, assets[uuid].manufacturer, assets[uuid].timestamp);
    }
    
    // add to checkpount
    function addCheckpoint(uint256 uuid, bytes32 message) {
        assetToCheckpoint[uuid].push(message);
    }
    
    function getCheckpoints(uint256 uuid) view returns (bytes32[]) {
        return assetToCheckpoint[uuid];
    }
    
}