Papers › DeepThought: a Reputation and Voting-based Blockchain Oracle

DeepThought: a Reputation and Voting-based Blockchain Oracle

22 Sep 2022arXiv:2209.11032links table onlyarchive 2025-07-28

Marco Di Gennaro, Lorenzo Italiano, Giovanni Meroni, Giovanni Quattrocchi

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Thanks to built-in immutability and persistence, the blockchain is often seen as a promising technology to certify information. However, when the information does not originate from the blockchain itself, its correctness cannot be taken for granted. To address this limitation, blockchain oracles -- services that validate external information before storing it in a blockchain -- were introduced. In particular, when the validation cannot be automated, oracles rely on humans that collaboratively cross-check external information. In this paper, we present DeepThought, a distributed human-based oracle that combines voting and reputation schemes. An empirical evaluation compares DeepThought with a state-of-the-art solution and shows that our approach achieves greater resistance to voters corruptions in different configurations.

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