Blockchains kinda stink for broadcast because you can't store tons of actual data on them, just a hash of your data. They're very good for an irrevocable log of small facts.
What does work is if you can find a bunch of servers or networks like IPFS or BT or what have you, publish your censorship-prone data there, and then just publish the hash to the block chain signed by the the author's key. You'd need an index of some sort also.
Then if someone wants to read the censor-prone document, they'd retrieve it from wherever they can find it, check the hash from the blockchain, and then know it was authentic.
I just finished re-reading "Surely you're joking Mr. Feynman". It's a remarkable book and for me as a student, Richard Feynman is a great inspiration to learn and hack on new things everyday.
Anki is great. I have been using it to prepare for my exams. Creating flashcards on my laptop and learning with them on my Android phone / tablet works like a charm. Also, the Android app just got updated. The only limitation I've found is that there is currently no way to self-host flashcards which can be accessed by the mobile app. If you're only using the desktop version you might want to look at https://github.com/dsnopek/anki-sync-server in order to self-host your flashcards.
Very creative use of glyph substitution though. :)