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Guru

Alan Woodward, one of the security-wallahs that I take very seriously, pointed me to a new paper from the University of Luxembourg: "Guru: Universal Reputation Module for Distributed Consensus Protocols".

We introduce reputation module Guru, which can be laid on top of various consensus protocols such as PBFT or HoneyBadger. It ranks nodes based on the outcomes of consensus rounds run by a small committee, and adaptively selects the committee based on the current reputation. The protocol can also take external reputation ranking as input.

Persistent reputation of pseudonyms is one of the key mechanisms that I think

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