An honest majority guarantee is a security property in decentralized systems, asserting that the system will operate correctly as long as a majority of its participants behave honestly. This principle forms the basis for the security of many blockchain consensus mechanisms. It implies that a distributed network can resist attacks if more than half of its computing power or staked capital is controlled by honest actors. This guarantee is fundamental to the trust model of various decentralized protocols.
Context
The honest majority guarantee is a central tenet in the security analysis of proof-of-work and proof-of-stake blockchains. Debates frequently revolve around the practical thresholds for an honest majority and the incentives required to maintain it. Continuous research aims to strengthen this guarantee against increasingly sophisticated attacks, ensuring the long-term integrity of decentralized networks.
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