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Random answer for you: suprnova.cc and zclmine.pro both have ZCL pools. Bittrex has ZCL wallets.
I did notice something strange when just looking at the suprnova website using my laptop macbook pro with firefox:
for some reason after a few minutes my cpu usage goes crazy, fan starts blowing like its overheating etc.
I did look at the process table with top but cant find anything... this only happens on suprnova website, no others.
Is there some sort of hidden cpu miner in there ??