Consensus Mechanisms


Consensus mechanisms "are crucial for a blockchain in order to function correctly. They make sure everyone uses the same blockchain" [1].


  • From Investopedia: A consensus mechanism is a fault-tolerant mechanism that is used in computer and blockchain systems to achieve the necessary agreement on a single data value or a single state of the network among distributed processes or multi-agent systems [2].

  • From KPMG: Consensus mechanism - A method of authenticating and validating a value or transaction on a Blockchain or a distributed ledger without the need to trust or rely on a central authority. Consensus mechanisms are central to the functioning of any blockchain or distributed ledger [3].


[1] "Different Blockchain Consensus Mechanisms", Hacker Noon [online]. Available: Date accessed: 2019‑06‑07.

[2] Investopedia: "Consensus Mechanism (Cryptocurrency)" [online]. Available: Date accessed: 2019‑06‑07.

[3] KPMG: "Consensus - Immutable Agreement for the Internet of Value" [online]. Available: Date accessed: 2019‑06‑07.