Like Vericoin Verium, StreamSpace secures and accelerates transactions by leveraging
two complementary protocol technologies, Proof of Stake Time (PoST) for the SSH
tokens and Proof of Work Time fragment (PoWTf) for the SPC tokens, into a cutting
edge blockchain ecosystem.
There is a lot more detail of PoST in our White paper
https://www.stream.space/ico/