Some time ago I started wondering: what if we create a new coin and use its Blockchain to store a website content?

Bitcoin is P2P, that way it is almost impossible to block bitcoin. Everything in the ledger is public and saved for eternity, would be good for some subreddits which were deleted recently.

What if the mining process would be just making backup of already existing specified social media websites?

Are there any similar projects, which could be used as a base?