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You do that by creating a regular book that works just fine, and then uploading it for sale in a bookstore.
iBooks only handles DRM managed by Apple Fairplay, and ADEPT is used by several bookstores including Kobo and B&N. You can set up your own bookstore and license ADEPT if you like, but it costs a lot for just one author.
Personally, I would advise against using DRM, since it doesn't stop the pirates, and just inconveniences paying customers.
Oh -- also, the EPUB you uploaded has zero-byte files for the book content, ToC, Nav, etc. -- no wonder it was reported as corrupted.
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