Quote:
Originally Posted by NiLuJe
@NogDog:
It's the SHA1 sum of the full filepath of the book. (ie. /mnt/us/documents/my_ebook.mobi).
AFAIR, it's been discussed before in the Kindle Dev & Calibre sections  .
On the other hand, Amazon books use something based on their ASIN (which I guess stands for Amazon Serial Identification Number). |
As always, NiLuJe comes to my rescue.
I'd tried sha1 (since it's 40 characters) on file name and name without suffix, but never thought to try the full path.
Thanks!