Space communications with distributed ledger technology

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Blasch, Erik and Probert, Beth and Clark, Ruaridh A. and Macdonald, Malcolm; (2026) Space communications with distributed ledger technology. In: SPIE Defense + Security 2026 Proceedings. SPIE, USA. (In Press)

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Abstract

Given the importance of space communications to the world’s economy, it is important to secure, authenticate, and make available data for effective business and efficient social services. A current technology supporting these services is Distributed Ledger Technology (DLT), such as blockchain and Directed Acyclic Graphs, that provide security to transactions and is being developed for other forms of transparent, secure, and zero-trust data distribution. DLT relies on consensus protocols among different agents to assess the transactions in a network. The decentralized nature of the DLT affords robustness as there is no central or single point of failure. This paper reviews DLT techniques, especially those that are applicable to the space environment and addresses metrics of importance from proof of state, work, credit, energy, and time with a focus on Proof of Inter-Satellite Evaluation (PoISE). The paper builds upon the current themes and develops metrics for comparison including conformal prediction to determine space navigation sensor performance within a space domain awareness (SDA) scenario.

ORCID iDs

Blasch, Erik, Probert, Beth ORCID logoORCID: https://orcid.org/0009-0004-6042-2018, Clark, Ruaridh A. ORCID logoORCID: https://orcid.org/0000-0003-4601-2085 and Macdonald, Malcolm ORCID logoORCID: https://orcid.org/0000-0003-4499-4281;
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