Hello and thank you for your question. It's a good one. Technically, no, a CIN will not generate when you publish if there is no subscription in place. With that said, there are different kinds of subscriptions. While some recipients subscribe by GLn and even GTIN, others subscribe by an entire target market. Think, anything published in the U.S., as an example.
To check this, you can log into IM, go to Reports, click Current Subscriptions, in the search parameters on the left, select General as the subscription type and enter the Shamrock GLN.
