Trusted message storage and transfer protocol and system

A method of storing and exchanging content, the method comprising:

• providing a storage media server including:
• an interface configured to send and receive content transfer messages to convey the content between respective ones of a plurality of storage media, wherein content being conveyed by a respective content transfer message is stored only in that content transfer message;
• a database comprising a plurality of records, each record representing a respective virtual storage medium and including:
• a respective unique identifier of the virtual storage medium;
• a respective Private key and certificate assigned to the virtual storage medium;
• a respective current content value of the virtual storage medium, and
• a respective log including information of each content transfer message sent or received by the virtual storage medium;
• and
• a controller;
• executing, by the controller, a transfer-in process including steps of:
• receiving, via the interface, a first content transfer message including a first content to be transferred and the respective unique identifier of a recipient virtual storage medium to which the first message content is to be transferred;
• accessing, in the database, the respective record representing the recipient virtual storage medium, based on the unique identifier in the first content transfer message;
• determining whether or not the first content transfer message is a duplicate of a previously received content transfer message based on the information stored in the log of the record representing the recipient virtual storage medium;
• and
• responsive to determination that the first content transfer message is not a duplicate, storing the first content in the respective current content value of the record representing the recipient virtual storage medium and responsive to determination that the first content transfer message is a duplicate, discarding the content transfer message;
• and
• executing, by the controller, a transfer-out process including steps of:
• receiving, via the interface, a content transfer request message including information identifying a second content to be transferred and the respective unique identifier of a sending virtual storage media medium from which the second content is to be transferred;
• accessing, in the database, the respective record representing the sending virtual storage media based on the unique identifier in the content transfer request message;
• removing the second content from the current content value of the respective record representing the sending virtual storage medium;
• generating a second content transfer message including the second content;
• and
• returning the second content transfer message.