Hey, Siacoin dev here. Siacoin can definitely be used for personal and private files, needing only that encryption be applied. Once we have a beta, all files will be encrypted by default, unless the user explicitly specifies that the file should not be encrypted.
Hey Taek! Glad to have feedback from you. I'm worried about brute force attacks, since the chain is public, if someone has a copy of it, a powerful computer in the near future could decrypt the files. What is your approach to that?
Of the multiple cloud storage protocols under development (Ethereum's seems to have, MaidSAFE's got one, there's datacoin, there's Sia, Storj, Filecoin.io, Filecoin.org, and potentially others as well), is there a particular reason that you've chosen to make your own? Would you be interested in seeing your particular use cases weaved into another proof-of-storage coin? Sia in particular is meant to be the cheapest available cloud storage solution, in addition to being very fast and robust, private and secure, and of course decentralized.
SC2 tries to be libre, so everyone can use the network, yet the market needs several alternatives, there is no fun without competition.
Happy to see more people working in this space of course, the more thought that goes into this type of project, the closer a full fledged proof-of-storage coin is to reality.
Me too!