Categorizing consensus

We propose the following consensus categories
  • Proof of Work
  • Chain-based Proof of Stake (includes LPoS, Proof of Importance)
  • PBFT and BFT-based Proof of Stake (includes DPoS, Ouroboros, Byteball, and PBFT)
  • Hybrid models: Proof of Activity and hybrid PoW/PoS
  • Proof of Burn (shares some characteristics with chain-based Proof of Stake)
  • Proof of Capacity/Space (shares some characteristics with PoW but also suffers from a [lighter] Nothing-at-stake problem)
  • Trusted computing algorithms (e.g. PoET)
  • DAGs are mostly using a DPoS-like algorithm, (except IOTA, which uses PoW)