A summary from The Register of where we are at the moment with Blockchain.
"there is exciting potential for this technology, but perhaps not in
the ways most people think. And ultimately, new or old technology, it
will all come down to business processes, policy and regulation to
define what changes and benefits we will get out of this."
"In terms of a new underlying protocol,
that will also depend on consensus and adoption, and to a much greater
extent than in the early days of the internet as we are today more
cognisant of the enormity of the potential impact of such technologies
and thus more committed to trying to get it right."