I've done a lot of googling, to no avail,
I'm interested in knowing what my native or third party options are for implementing DRM to protect audio (say in a spotify like scenario) and video.(for VOD applications)
I've seen mention of widevine but all the content seems to be at least 18 months to 2 years old.
What options do i have for implementing DRM on the iPhone?
There are PlayReady- or Widevine DRM-based solutions for iOS, such as this one by Inside Secure. They supply an SDK to integrate DRM audio/video protection in your apps (disclaimer: I work there).