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Satellite-Aided Consensus Protocol for Scalable Blockchains.

Xintong Ling1,2, Zheng Gao1, Yuwei Le1

  • 1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China.

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|October 6, 2020
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Summary
This summary is machine-generated.

This study introduces a satellite-aided consensus protocol for space-terrestrial blockchains, enhancing scalability and throughput. The novel approach leverages satellites for connectivity, outperforming traditional Proof of Work (PoW) in simulations.

Keywords:
blockchainconsensus protocolperformance analysissatellitespace–terrestrial network

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Area of Science:

  • Blockchain Technology
  • Space Communication Networks
  • Distributed Systems

Background:

  • Developing scalable and secure consensus mechanisms for distributed ledger technologies is crucial.
  • Integrating space and terrestrial networks presents unique challenges for blockchain implementation.
  • Existing consensus protocols often struggle with the scale and connectivity requirements of global networks.

Discussion:

  • The proposed satellite-aided permissionless consensus protocol utilizes satellites for enhanced coverage and connectivity in space-terrestrial blockchains.
  • The protocol's workflow is designed to handle adversarial nodes, user misbehavior, and transmission outages, ensuring robustness.
  • Security is assessed against adversarial miners and colluding satellites, using Proof of Work (PoW) as a benchmark.

Key Insights:

  • The satellite-aided protocol demonstrates superior scalability and higher throughput compared to traditional PoW consensus mechanisms.
  • Extensive coverage and ubiquitous connectivity provided by satellites significantly improve blockchain performance.
  • A Markov model analysis quantifies the impact of information propagation delay on system performance.

Outlook:

  • This research paves the way for more resilient and scalable blockchain applications in space and across terrestrial networks.
  • Future work could explore the integration of advanced satellite communication technologies for further performance optimization.
  • The proposed protocol offers a foundation for decentralized applications requiring global reach and high transaction throughput.