No blockchains, but you've seen gittorrent right? :)

   On 9 September 2015 23:47:31 IST, rysiek <rysiek@hackerspace.pl> wrote:

Dnia środa, 9 września 2015 21:48:56 jim bell pisze:

     About Repbin:
     Repbin is an encrypted pastebin for the command line that runs over
     Tor!
     Repbin servers form a distributed network where nodes sync posts
     with
     each other (like in Usenet or BBS/Fido systems). This makes Repbin
     resilient and scalable. Repbin focuses on privacy (encrypted
     messages)
     and anonymity (padding and repost chains). To limit spam and
     denial-of-service attacks, Repbin uses the Hashcash proof-of-work
     algorithm which is widely known from Bitcoin mining.
     Learn more about Repbin here:
     [1]https://github.com/repbin/repbin/blob/master/README.md

     Has anybody ever considered the idea of doing otherwise-useful CPU
     work with
     the power currently expended by computing hashes in Bitcoin mining?

     My dream would be a distributed github replacement (a'la gitchain)
     where
     proof-of-work is somehow related to compilation, running tests, or
     somesuch.

     The most obvious application would be weather forecasting: It could
     use a
     huge amount of computation, on a continuously ongoing basis, and is
     valuable
     to every nation on earth. Whether it can be lasso'ed into a
     bitcoin-mining
     engine, I don't know.

     Probably not -- the "thing" mined has to be easily verifiable by
     other nodes.
     How does one verify a weather forecast in such a setting? ;)

   --
   Sent from my Android device with K-9 Mail. Please excuse my brevity.

References

   1. https://github.com/repbin/repbin/blob/master/README.md