|06-07-2011, 04:23 AM||#1|
Join Date: May 2011
Location: Scotland, UK
Device: Kindle 3
EXTH Header Question
I'm tried searching but with no luck and I was wondering if anyone knows what the EXTH - 3 - drm_ebookbase_book_id header is and what's it used for?
Obviously from the name it's something DRM related, but every book I have has a different number, is it kind of like a DRM ISBN or what?
|06-07-2011, 03:28 PM||#2|
Join Date: Nov 2009
Sorry but no one knows. There are actually 3 related extended header items (according to our own Wiki on the Mobi format)
These are most probably involved in DRM generation and as you guessed possibly tracking. Once the DRM has been removed, you can typically change any of the metadata / exth header items including TTS, and the like.
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