yeti That will leak. Someone will play meanie, just to prove being possible to do so.
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Someone will get an account for your blog just to bust it.
Which is why this board is such a wretched hive of scum & villainy, right? 😁 No, I'm kidding.
One low-tech scheme I have is to take a random word from a dictionary each day and encrypt the site contents with it. Then, use a TTS engine on the same word and post that on the site. Users play the sample and type in the word and the text gets decrypted.
Problem is: a) English is not everybody's native language (think of the day's word being corollary or lollapalooza and the user being Japanese: no blog post for you today, mōshiwake gozaimasu) and b) hearing-impaired people (like heavy-metal fans)