Cryptology ePrint Archive: Report 2017/1059

CP-consensus: a Blockchain Protocol Based on Synchronous Timestamps of Compass Satellite

Lijing Zhou and Licheng Wang and Yiru Sun

Abstract: Bitcoin, the first decentralized cryptocurrency, achieves great success but also encounters many challenges. In this paper, we mainly focus on Bitcoin's five challenges: low network synchronization; poor throughput; high information propagation delay; vulnerabilities to fork-based attacks and consumption of a large amount of computational power to maintain the blockchain. To address these challenges, we present the CP-consensus, a blockchain protocol based on synchronous timestamps of the Compass satellite. Firstly, CP-consensus provides a quasi-synchronous network for nodes. Specifically, nodes synchronously begin or end in each phase. Secondly, the block propagation delay is significantly reduced by adopting cache-nodes. Moreover, the block verification delay is significantly reduced since it is limited only by the size of block-header. Thirdly, CP-consensus has a high throughput with a larger block size since that the block size does not influence the consistency of CP-consensus. Fourthly, CP-consensus resists fork-based attacks and consumes a small amount of computational power. Finally, parameters setting and the security of CP-consensus are discussed.

Category / Keywords: blockchainBlockchain, consensus, throughput, fork, synchronous timestamps, Compass satellite.

Date: received 24 Oct 2017, last revised 31 Oct 2017

Contact author: 379739494 at qq com

Available format(s): PDF | BibTeX Citation

Version: 20171031:152717 (All versions of this report)

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