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I think in such a distributed system the computer power of the network will depend on the attractiveness of the "mining".

Or is it just in early alpha testing stage?

I think so, I'll try to find more exact information!

What I know about SONM:

  1. the strongest competitor is RLC
  2. In the article of RBC 09.29.2017 (the leading business publication in Russia) we was informed about the contract with SONM and Selectel (one of the largest hosting providers in Russia, founded by Vyacheslav Mirilashvili and Lev Leviev). Read more at RBC:
    https://www.rbc.ru/spb_sz/29/09/2017/59ce56019a79471f60339da4 (on russian, but if you are intrested, you will translate with google))) )