consensus
  • README
  • Blockchain Consensus Encyclopedia Infographic
  • CONTRIBUTING
  • 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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  1. Chain-based Hybrid models

Proof of Work (PoW) / Nexus Proof of State (nPoS) or Nexus Proof of Holding (nPOH)

PreviousLimited Confidence Proof-of-Activity (LCPoA)NextProof of Activity

Last updated 6 years ago

Nexus uses 3 consensus channels to maximize decentralization and provide fast, secure transactions. Each channel has an independent difficulty algorithm, amongst other checks and balances, to prevent a single channel from monopolizing block production and compromising the security of the network. Nexus channels include a Prime channel (CPU Mining), a Hashing channel (GPU Mining), and Nexus Proof of Holding (nPOH). Nexus takes the proof-of-stake system developed by Peercoin, and combines it with a Trust-based weighting system to create the Proof-of-Holding consensus mechanism. Nodes receive a Trust rating that is established by their contributions to the network, which increases over time. Nodes with greater Trust are granted an increased minting rate, which increases from 0.5% to 3% within one year, the longer you build Trust on the network. 3 consensus channels: Prime (CPU), Hashing (GPU), and Nexus Proof of Holding (nPOH)

Used in

Pros

  • Key signature scheme to keep an account’s public keys obscured even when making transactions (This is made possible by moving away from addresses based on public key hashes, and implementing a new system called Signature Chains).

  • quantum resistance (Nexus uses a combination of SHA3 hashing algorithms combined with 571 bit private keys and 512/1024 bit proof of work)

  • multiple consensus channels greatly reduces the risk of a 51% attack (attacker would need to control all 3 channels)

  • OnChain scalability Transaction processing is distributed across multiple channels working synergistically to increase transaction throughput as resources increase. Individual channels verify transactions, consolidate verified transactions into Merkle trees, and add finished blocks onto the blockchain. The Unified Time protocol enables transaction processing, trust locks, and block locks to be consistent throughout time. The potential of Nexus 3DC is limited only by node count and represents the most energy-efficient consensus system to date.

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Nexus
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