Blockchain offer no satisfactory solutions to this, houses can change, people can lose access to identification, people can be evicted, people can make mistakes. The last thing I would want is to be evicted with (by design) no chance to get my house back because my computer got hacked.

I cannot understand how at the same time lots of people are worried about "superintelligent machines eating the world" and proposing to remove humans from all important decisions in our lives.

Next step is to build a social graph on blockchain?