I am looking to detect any unique constraint if and when a VM image is copied from one location to another. I am actually doing this as a part of product licensing service modification to prevent license tampering. The licensing service uses MAC ID to uniquely identify a license. This works fine on physical machine but in case of a copied VM licensing service is unable to identify the OS as separate OS and invoke license blocking. I only need any unique element which gets changed when VM is copied / replicated. (I have omitted details for over simplification). Any thoughts appreciated.
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