And what's the problem about mining on supernova? Don't get it...
Its not a problem, you mine and get BCTZ.
What we were trying to do is to help BTCZ get listed on other exchanges by donating or mining on pcmining.xyz where the pool owner set up a special fee to donation address in the OP.
Exactly this. If suprnova had a donation option, I'd mine there. I trust the pool and the pool owner and am not worried at all about a 51% issue there. Seems though that if all the hash power is going to be focused there, it might mean we just have to mine there too and manually donate to the devs in other ways.
So far it looks like my Nicehash and PCMiNing.xyz experiment worked out very poorly in terms of ROI, and I'd have been better off just mining on suprnova and doing a manual donation, as I said.
About $100 invested on a Nicehash contract to bump the pool's hashrate, and we found only one block. So, 8225.87 BitcoinZ mined on PCMiNing.xyz. That's around $22 worth at the current rate.
Compared to about $50 invested in Nicehash to mine on suprnova, and mined around $52 worth of BitcoinZ...
Unless we can get huge numbers to mine on PCMiNing.xyz, it's just not a rational choice to keep putting our mining power there.