which coins are competitors to BTCZ?
there are so many forks of Zcash, that i am a little confues what they bring better then zcash? maybe i just do not understand :S. well, definetly the name is good

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Zcash and all their clone(forks) are realy sucks - you can't save you wallet in safe - there is no encription or any protection in wallet - it's plain text - anyone can easily still it. You can't use Z adress (The main advertised advantage - zero information) in most services, it work only in full node and it's very slow.
i saw that main adversited advantage is is Z adrees, but everywherw is only a public adress. so if i understand you corectly, also BTCZ is sucks...or you wanted to say, that btcz is way better then other forks? There is really to much forked coines with no added value.
i was mining hush from the beggining, know i am not sure, if they can deliver what they sad...BTCZ is a little different, but today as so many coins outthere, i am not sure if btcz can find the place for usabilly...but...