LOL. I just got that from the BlackCoin website, since it says it "is the first PoW/PoS hybrid coin to fully reach the purely PoS stage"
That could be true as the older PoW/PoS hybrids never switched to fully PoS mode. Actually Cloudcoin and ADT did but not intentionally
Where does ADT fit in ? Buddy just cancelled mining on it one day lol