Kerry Wan/ZDNET ZDNET’s key takeaways Apple’s new image provenance feature, Reference Image, can verify a photo’s origin. Still, it lacks elements that raise concerns for open-source builders. Content provenance still isn’t a widespread priority in tech. In something of a surprise to longtime viewers like ZDNET senior contributing editor Kerry Wan, Apple’s annual hardware event on Wednesday opened with the reveal of the iPhone 18 Pro and Pro Max. New CEO John Ternus immediately focused on Apple Intelligence, emphasizing how central it is to the new devices — especially when it comes to your photos. Reference Image, a new feature…