consensus
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  • Blockchain Consensus Encyclopedia Infographic
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  • Introduction
  • Blockchain Consensus?
  • Glossary
  • Categorizing consensus
  • Chain-based Proof of Work
    • Proof of Work (PoW)
    • Proof of Meaningful Work (PoMW)
    • Hybrid Proof of Work (HPoW)
    • Proof of Work time (PoWT)
    • Delayed Proof of Work (dPoW)
    • Proof of Edit Distance
    • ePoW: equitable chance and energy-saving.
    • Semi-Synchronous Proof of Work (SSPoW)
  • Chain-based Proof of Stake
    • Delegated Proof-of-Contribution (DPoC)
    • Secure Proof of Stake (SPoS)
    • Hybrid PBFT/Aurand
    • Proof of Stake (PoS)
    • Delegated Proof of Stake (DPoS)
    • Proof of Stake Time (PoST)
    • Proof of stake Boo (PoS Boo)
    • High Interest Proof of Stake (HiPoS)
    • Asset PoS (APoS )
    • Traditional Proof of Stake / Tiered Proof Of Stake (TPOS)
    • Casper the Friendly Finality Gadget (FFG)
    • Correct By Construction (CBC) Casper
    • Variable Delayed Proof of Stake (vDPOS)
    • Proof of Stake Velocity
    • Magi's Proof of Stake (mPoS)
    • Leased Proof of Stake (LPoS)
    • Delegated Proof of Importance (DPoI)
    • Leasing Proof of Stake (PoS/LPoS)
  • Chain-based Proof of Capacity/Space
    • Proof of Process
    • Proof of capacity (PoC)
    • Proof of Signature (PoSign)
    • Proof of Retrievability (POR)
    • Proof of Location
    • Proof of Reputation (PoR)
    • Proof of Proof (PoP)
    • Proof of History
    • Proof of Existence
    • Proof of Research (DPoR)
    • Proof of Activity
    • Proof of Weight (PoWeight)
    • Proof of Zero (PoZ)
    • Proof of Importance
    • Proof of Care (PoC)
    • Raft
    • Proof of Value (PoV)
    • Proof of Participation (PoP)
    • Proof of Believability
    • Proof of Stake (POS) / Proof of Presence (PoP)
    • Proof of Ownership
    • Proof of Quality (PoQ)
    • Proof of Space (PoC)
  • Chain-based Hybrid models
    • GRANDPA
    • Proof of authority (PoA)
    • Ethereum Proof of Authority
    • Limited Confidence Proof-of-Activity (LCPoA)
    • Proof of Work (PoW) / Nexus Proof of State (nPoS) or Nexus Proof of Holding (nPOH)
    • Proof of Activity
    • Proof of Work (PoW) / Proof of Stake (PoS) / Proof Of Care (PoC)
    • Proof of work (PoW) / High Interest Proof of Stake (HiPoS)
    • Proof of Work (PoW) / PoM / PoSII
  • Chain-based Proof of Burn
    • Proof of Processed Payments (PoPP)
    • Proof of Burn (PoB)
    • Proof of Time
    • Proof of Stake (PoS) / Proof of Disintegration (PoD)
  • Chain-based Trusted computing algorithms
    • Proof of Elapsed Time (PoET)
  • Chain-based PBFT and BFT-based Proof of Stake
    • leaderless BFT dual ledger architecture
    • Albatross
    • asynchronous BFT protocol
    • BFTree
    • Byzantine Fault Tolerance (BFT)
    • Delegated Byzantine Fault Tolerance
    • Federated Byzantine Agreement
    • HotStuff
    • LibraBFT
    • Modified Federated Byzantine Agreement (mFBA)
    • Ouroboros
    • Practical Byzantine Fault Tolerance
  • Chain-based others
    • Proof of Trust (PoT)
    • Proof of Devotion
    • Snowglobe
    • Avalanche
    • Serialization of Proof-of-work Events (Spectre)
    • Scrypt-adaptive-N (ASIC resistant)
  • Chain-based DAG
    • BlockFlow
    • Direct Acyclic Graph Tangle (DAG)
    • Hashgraph
    • Block-lattice - Directed Acyclic Graphs (DAGs)
  • Magi's proof-of-work (mPoW)
  • Common Attacks
  • Performance indicators
  • ThresholdRelay
  • Holochain
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  • Whitepaper
  • Pros
  • Used in
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  1. Chain-based PBFT and BFT-based Proof of Stake

HotStuff

Hot-Stuff the Linear, Optimal-Resilience, One-Message BFT Devil

PreviousFederated Byzantine AgreementNextLibraBFT

Last updated 5 years ago

Algorithm

HotStuff, a leader-based Byzantine fault-tolerant replication protocol for the partially synchronous model. Once network communication becomes synchronous, HotStuff enables a correct leader to drive the protocol to consensus at the pace of actual (vs. maximum) network delay--a property called responsiveness--and with communication complexity that is linear in the number of replicas. To our knowledge, HotStuff is the first partially synchronous BFT replication protocol exhibiting these combined properties. HotStuff is built around a novel framework that forms a bridge between classical BFT foundations and blockchains. It allows the expression of other known protocols (DLS, PBFT, Tendermint, Casper), and ours, in a common framework. Our deployment of HotStuff over a network with over 100 replicas achieves throughput and latency comparable to that of BFT-SMaRt, while enjoying linear communication footprint during leader failover (vs. quadratic with BFT-SMaRt).

Authors researchers , , , ,

Whitepaper

Pros

  • HotStuff use a single message type for proposing, a single message type for voting, and simple Commit and Preferred Branch Rules.

HotStuff makes BFT more scalable by an order of magnitude, as the algorithm’s view-change complexity is made quadratically faster — a function of simply the number of nodes in the network, as opposed to a function of the number of nodes squared, as is the case in PBFT. ()

Used in

Read more

https://arxiv.org/abs/1803.05069
Maofan Yin
Dahlia Malkhi
Michael K. Reiter
Guy Golan Gueta
Ittai Abraham
https://arxiv.org/pdf/1803.05069
https://medium.com/@cypherium/what-is-hotstuff-and-why-is-it-a-big-deal-213f39696763
Cypherium
https://blockchainschool.epfl.ch/wp-content/uploads/2019/02/sbws19-malkhi.pdf
https://dahliamalkhi.wordpress.com/2018/10/24/hotstuff-three-chain-rules/
https://dahliamalkhi.wordpress.com/2018/03/13/casper-in-the-lens-of-bft/