It looks like the raw shotcode data is being encrypted before showing up in the URL parameters. Typically, encryption (e.g. RSA Encryption) increases the size of the data, which is why there isn't simply six pairs of hex digits in the URL. We won't be able to get to the actual raw data that way, in other words.
Nice work, though! And you, too Dunder... way to take the initiative and contact the blogger... and thanks for sharing the response.