A Taxonomy of Blockchain Consensus Methods

A Taxonomy of Blockchain Consensus Methods

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For a blockchain, consensus is the foundation protocol that enables cryptocurrencies such as Bitcoin to maintain state.Additionally, to ensure safety and liveness for a publicly accessible and verifiable ledger, fault here tolerance must be robust.However, there appears to be a degree of misunderstanding about how consensus is applied across blockchains.To assist researchers considering variations between them, this study presents a rational classification of flexcon reverse osmosis water storage tank consensus methods applied to current blockchains.The study provides a survey of 19 methods classified by the scarce resource they employ: clock-cycles, bits, tokens, votes, time, and biometrics.

Blockchain implementations are split between consensus algorithms requiring proof of resource and those that use majority voting to update the ledger.