Hey guys I'm going to open by stating that I'm currently mostly invested in CLOAK. With that said, I wanted to ask some questions and maybe open an actually useful discussion instead of FUD.
1. I've been told that DRK's anonymity implementation is based on CoinJoin and that there might be an issue with this method that allows transactions to be traced. Could somebody with understanding better than mine explain? And maybe better explain the mood CLOAK intends to use as well?
2. Are the MasterNodes trustless?
3. Why do most of you consider PoS coins to be... PoS's?
Thanks, and let's keep this civil haha
1. DRK's CoinJoin implementation is much better than a regular CoinJoin transaction. Coming in RC4 is a split masternode system, where 2 masternodes are selected and then one splits your transaction amount into denominated units (1 DRK, 5 DRK, 10 DRK, and so on) before you send it to the other one for the actual transaction. No timing analysis can be done on the blockchain to see who denominated at any point in time. The only weakness is that if you own both masternodes, you can trace the payments because you are seeing realtime what clients belong to denominationed units and where those units end up. At some point we are getting IP obfuscation, as well as I2P.
I haven't looked at CLOAK (is it really all caps like that?) in some time, but I know in the beginning they were talking about sending coins through exchanges to remove taint.
2. Yes, masternodes are trustless. They cannot steal your coins. This is DRK's greatest feature. All the other implementations I've seen rely on trust. If CLOAK still works as I've described above, then it is laden with trust and therefore very insecure. It will work until it doesn't.
There is a caveat here though. DRK has a lot of masternodes hosted on Amazon. Amazon has access to the physical machines (which are most likely virtualized instances all the way down to the network switches and controllers). If they wanted to, they could map a great number of transactions. Someone proposed yesterday limiting masternodes 1 and 2 from being in the same IP address range, meaning 54.54.54.54 and 54.54.55.54 would never be selected as masternodes simultaneously. This seems like a good stepping off point to limit concentration of nodes on one provider. If 60% of nodes are hosted on Amazon and they cannot be simultaneously selected for the current round, that means the other 40% will be selected more of the time then Amazon nodes will. This will add an incentive to distribute masternodes across more providers.
3. Proof of stake merely enriches the rich, fuck that. At least with DRK you have to provide a service to the network to increase your wealth, and it is a greatly needed service at that.