Contract Source Code:

// File: @openzeppelin/[email protected]/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: @openzeppelin/[email protected]/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: BBDICNotarization.sol



pragma solidity ^0.8.4;


contract BbdicNotarization is Ownable { 

    mapping(string => string) private _notarizedItems;

    string private _jsonURIBase;

    constructor(string memory jsonURIBase_) {
        _jsonURIBase = jsonURIBase_;
    }

    function notarize(string memory resourceId_, string memory hash_)
        public
        onlyOwner 
    {
        requireNotExist(resourceId_);
        _notarizedItems[resourceId_] = hash_;
        emit NewResourceNotarized(resourceId_, hash_);
    }

    function notarizeWithReason(string memory resourceId_, string memory hash_, string memory reason_)
        public
        onlyOwner 
    {
        requireExist(resourceId_);
        _notarizedItems[resourceId_] = hash_;
        emit NewResourceNotarizedWithReason(resourceId_, hash_, reason_);
    }

    function resourceHash(string memory resourceId_) public view virtual returns (string memory) {
        requireExist(resourceId_);
        return _notarizedItems[resourceId_];
    }    

    function resourceUri(string memory resourceId_) public view virtual returns (string memory) {
        requireExist(resourceId_);
        
        return string(abi.encodePacked(_jsonURIBase, resourceId_));
    }

    function requireExist(string memory resourceId_) internal view virtual {
        require(bytes(_notarizedItems[resourceId_]).length != 0, "Invalid resource ID: this document has never been notarized.");
    }
    
    function requireNotExist(string memory resourceId_) internal view virtual {
        require(bytes(_notarizedItems[resourceId_]).length == 0, "Invalid resource ID: this document has already been notarized.");
    }    
   
    function jsonURIBase() public view returns (string memory) {
        return _jsonURIBase;
    }
    
    function setJsonURIBase(string memory jsonURIBase_) public virtual onlyOwner {
        _jsonURIBase = jsonURIBase_;
    }    

    event NewResourceNotarized(string indexed resourceId, string indexed hash);

    event NewResourceNotarizedWithReason(string indexed resourceId, string indexed hash, string reason);

}