Journal of Computer Applications ›› 2019, Vol. 39 ›› Issue (7): 2156-2161.DOI: 10.11772/j.issn.1001-9081.2018122503

• Frontier & interdisciplinary applications • Previous Articles     Next Articles

Public welfare time bank system based on blockchain technology

XIAO Kai<sup>1,2,3,4</sup>, WANG Meng<sup>1,3,4</sup>, TANG Xinyu<sup>1,3,4</sup>, JIANG Tonghai<sup>1,3,4</sup>   

  1. 1. Xinjiang Technical Institute of Physics and Chemistry, Chinese Academic of Sciences, Urumqi Xinjiang 830011, China;
    2. School of Computer Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Xinjiang Laboratory of Minority Speech and Language Information Processing, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi Xinjiang 830011, China;
    4. Jiangsu CAS Nor-West Star Information Technology Company Limited, Wuxi Jiangsu 214135, China
  • Received:2018-12-19 Revised:2019-02-02 Online:2019-07-10 Published:2019-03-28
  • Supported by:

    This work is partially supported by the Social Development Science and Technology Demonstration Project Founded by Science and Technology Development Fund of Wuxi city (WX03-02B0205-051800-16).


肖凯1,2,3,4, 王蒙1,3,4, 唐新余1,3,4, 蒋同海1,3,4   

  1. 1. 中国科学院 新疆理化技术研究所, 乌鲁木齐 830011;
    2. 中国科学院大学 计算机科学与技术学院, 北京 100049;
    3. 中国科学院新疆理化技术研究所, 新疆民族语音语言信息处理实验室, 乌鲁木齐 830011;
    4. 江苏中科西北星信息科技有限公司, 江苏 无锡 214135
  • 通讯作者: 唐新余
  • 作者简介:肖凯(1993-),男,湖南郴州人,硕士研究生,主要研究方向:区块链;王蒙(1980-),男,陕西西安人,副研究员,硕士,主要研究方向:物联网应用技术、区块链、大数据分析;唐新余(1975-),男,新疆乌鲁木齐人,副研究员,博士,主要研究向:物联网应用、区块链、大数据分析;蒋同海(1963-),男,新疆福海人,研究员,博士,主要研究方向:自然语言处理、区块链。
  • 基金资助:



In the existing time bank system, the issuance and settlement functions of time dollar are completely centralized on a central node. This central way not only suffers from many security problems including single point failure of central node and data tampering, but also has some problems such as lack of transparency in time dollar issuance and circulation, the dependance on centralized settlement agency in time dollar settlement process. In order to solve these problems, a public welfare time bank system based on blockchain was proposed. Firstly, the issuance function and settlement function of time dollar were separated from the central node. Then, the separated issuance function was gradually decentralized, and the separated settlement function was directly decentralized by the use of advantages of blockchain such as distributed decentration, collective maintenance and the feature of not easy to tamper, after that Public Welfare Time Blockchain (PWTB) was formed. Finally, PWTB used blockchain to decentralize the time bank system from a single node maintaining ledger to the collective maintaining distributed shared ledger, so the issuance and circulation of time dollar became open and transparent, and the settlement of time dollar did not rely on a central node. The security analysis shows that the PWTB can achieve safe information transmission and storage as well as safe data sharing.

Key words: blockchain, time bank, time dollar, decentralization, information security



关键词: 区块链, 时间银行, 时间币, 去中心化, 信息安全

CLC Number: