TrustNet: Trust-based Moderation Using Distributed Chat Systems for Transitive Trust Propagation

Sammanfattning: This thesis introduces TrustNet, a flexible and distributed system for deriving, and interacting with, computational trust. The focus of the thesis is applying TrustNet as a tool within distributed chat systems for implementing a subjective moderation system. Two distributed chat systems, Secure Scuttlebutt and Cabal, are discussed, the latter having been extended with a proof of concept implementation of the proposed system. The concept of ranking strategies is also introduced as a general purpose technique for converting a produced set of rankings into strategy-defined subsets. This work proposes a complete trust system that can be incorporated as a readymade software component for distributed ledger technologies, and which provides real value for impacted users by way of automating decision-making and actions as a result of assigned trust scores.