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Theoretically, you could add a signatures.xml file to the epub. However, I don't know of any epub app that actually supports this feature. I.e., you'd also have to provide readers with a standalone app that validates the checksums. It'd probably be easier to generate an MD5 checksum for the whole epub.


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A download checker for Humble Bundle book bundles. Since there seems to be no answer from this community regarding an application meeting the request in my question, I decided to make one myself. When you buy a bundle from Humble Bundle, whether books or games, they send you a web link to a HTML page (which I call here the download page).. You can then ...


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