# Consensus Content type: Topic Hub Related resources: - Attestation (Glossary Term): https://theblockchainlibrary.com/glossary/attestation - Block Producer (Glossary Term): https://theblockchainlibrary.com/glossary/block-producer - Byzantine Fault (Glossary Term): https://theblockchainlibrary.com/glossary/byzantine-fault - Byzantine Fault Tolerance (Glossary Term): https://theblockchainlibrary.com/glossary/byzantine-fault-tolerance - Byzantine Generals Problem (Glossary Term): https://theblockchainlibrary.com/glossary/byzantine-generals-problem
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Consensus

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Key Glossary Terms

Essential vocabulary for this topic

Attestation

intermediate

A validator-signed statement confirming a block, checkpoint, or other consensus fact in a proof-of-stake protocol.

Block Producer

intermediate

A network participant selected or elected to assemble transactions into a candidate block and propose it to the network.

Byzantine Fault

advanced

A failure condition in which a distributed participant can send conflicting, arbitrary, or malicious information to peers.

Byzantine Fault Tolerance

advanced

The ability of a distributed system to reach agreement even when some participants fail or behave maliciously.

Byzantine Generals Problem

advanced

A classic distributed-systems problem describing the difficulty of reaching agreement when some participants may be faulty or deceptive.

Canonical Chain

advanced

The blockchain history currently recognized by consensus as the authoritative chain.