I read an article stating that Callisto will store the data. Work as a decentralized repository. Not very well understood how and for what ... who will explain?
You can ask with the developer on discord
Dear friends!
Callisto Team have scheduled an Discord
AMA with one of the Callisto Founders (CTO) - Yohan (@yograterol) on Monday 9th July 2018 at 2pm UTC -5
Make sure to have a question prepared for him!
Discord join link:
https://discord.gg/HavEZkq