After I read DRK white paper carefully, I realize that PoH is not a plagiarized part. You can read this paper "Delegated Proof of Reputation: a Novel Blockchain Consensus" carefully to get more information. As I understand, DPoR and PoH is the same consensus algorithm. They both use Hodge Rank to ranking blockchain node. In my opinion, the main difference between DPoR and PoH is the DPoR will choose top-n voted-delegates to become the block producer who validate transaction, create new blocks and maintain the network and the PoH is not.  In simpler terms, DPoR ~ DPoS and PoH ~ PoS but they use another ranking algorithm.  Moreover, page 13 of Draken White paper, they reference Delegated Proof of Reputation: a Novel Blockchain Consensus so I strongly believe PoH ~ DPoS but DPoS can be considered as "semi-decentralization" and PoH is totally decentralization. Honestly, I not sure DRK project is the scam project or not but the introduced ecosystem impressed me very much. I don't know when they release DRKakao maybe it gonna be the amazed dapp.