Publication: A Techno-Economic Study of Spectrum Sharing with Blockchain and Smart Contracts

P. J. Bustamante, M. M. Gomez, M. B. H. Weiss, I. Murtazashvili and A. Palida, “A Techno-Economic Study of Spectrum Sharing with Blockchain and Smart Contracts,” in IEEE Communications Magazine, doi: 10.1109/MCOM.001.2200317.

Abstract: “The wireless crunch resulted in excess demand for the use of spectrum and spectrum sharing is increasingly being proposed as a solution. To date, little research has considered how blockchain technologies can enable greater spectrum sharing. To address this gap, we develop a stylized model to show how blockchains can be leveraged to facilitate the exchange of access rights on a well known band. To demonstrate proof of concept, we analyze available system design options, implement a small-scale test scenario, estimate the implementation and usage costs, and demonstrate how these technologies impact spectrum sharing prospects. Our exercise shows that blockchains can alleviate some of the perceived obstacles to greater sharing of spectrum.”

Published in IEEE Communications Magazine.

Publication: Bitcoin’s Latency-Security Analysis Made Simple

By Dongning Guo and Ling Ren

Abstract: “Simple closed-form upper and lower bounds are developed for the security of the Nakamoto consensus as a function of the confirmation depth, the honest and adversarial block mining rates, and an upper bound on the block propagation delay. The bounds are exponential in the confirmation depth and apply regardless of the adversary’s attack strategy. The gap between the upper and lower bounds is small for Bitcoin’s parameters. For example, assuming an average block interval of 10 minutes, a network delay bound of ten seconds, and 10% adversarial mining power, the widely used 6-block confirmation rule yields a safety violation between 0.11% and 0.35% probability.”

Proceedings of the 4th ACM Conference on Advances in Financial Technologies, September 2022