Chinese Journal of Network and Information Security ›› 2021, Vol. 7 ›› Issue (1): 76-83.doi: 10.11959/j.issn.2096-109x.2021008

• Topic Ⅱ: Blockchain Security • Previous Articles     Next Articles

Compression of bitcoin blockchain

Xiaojiao CHEN1,2, Xianzheng LIN1,2, Nenghai YU1,2   

  1. 1 School of CyberScience, University of Science and Technology of China, Hefei 230001, China
    2 Key Laboratory of Electro-magnetic Space Information, Chinese Academy of Sciences, Hefei 230001, China
  • Revised:2020-03-18 Online:2021-02-15 Published:2021-02-01
  • Supported by:
    The Natural Science Foundation of Anhui Province, China(BJ2100330001)


The blockchain provides an immutable, transparent, and decentralized method for data storage.However, as the volume of data gradually increases, the public blockchain system requires significant storage space.The bitcoin block's structure was analyzed.A method was introduced to compress the size of transactions in the bitcoin blockchain by encoding specific fields.Experiment shows that the proposed method can reduce the storage space of the bitcoin blockchain by 18.13%.

Key words: blockchain, compression, entropy, encode

CLC Number: 

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