Technical and philosophical uncertainties aside, I don't thing a blockchain is a suitable medium for humanlike consciousness. A blockchain exists to lock down a state irrevocably, and state changes are encoded in new blocks referring to the old ones. If you think the Bitcoin blockchain is bloated. just try storing every neural operation in one... Besides, neural rewiring, malleability of memory etc. seem like pretty important parts of being a live person to me.
We'll just have to do with our memories of those lost for now.
Watch this. This guy is the CLOSEST IN THE WORLD to achieving Artificial Intelligence. And to me it seems like he is missing a block chain to make the computer more than a computer.
https://www.youtube.com/watch?v=MG_nOddk01E We may someday soon achieve strong AI, but it will always be artificial.
There will never be "spiritual machines" or true
consciousness/awareness in a computer.