If you want to know how blockchain relates to DRM and ebooks, it helps to understand CryptoKitties.
Blockchain technology has made its way to book publishing. The e-book platforms from two startups — Scenarex, based in Montreal, and Publica, based in Gibraltar and Latvia — are strikingly similar. They are implementing ideas that have been discussed in the book publishing world for a little while. Publica launched its system a couple of months ago, and Scenarex is launching its Bookchain system next month. As these systems roll out, we'll see whether the advantages offered by blockchain technology will translate to features that book authors and readers care about.
Industry press release from the Canada Media Fund.