Our recent work on Quorum Systems in Permissionless Networks will be presented at the OPODIS 2022 conference. It is coauthored by Luca Zanolini and Christian Cachin of the University of Bern and Giuliano Losa of the Stellar Development Foundation.

The paper introduces a new abstraction for expressing fault-tolerant consensus protocols in open, permissionless networks. It generalizes fail-prone systems and Byzantine quorum systems, asymmetric distributed trust, and gives a new characterization of the model used in the Stellar blockchain.

Read more about it in our blog.