Blockchain to store private data and ownership
I think these links should be more useful for you than direct answer


http://www.cryptograffiti.info/ 
https://app.originstamp.org/home
https://bitcointalk.org/index.php?topic=1023190.0
https://github.com/petertodd/python-bitcoinlib/blob/master/examples/publish-text.py
http://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html