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Ali Mansourian

Ali Mansourian

Professor

Ali Mansourian

Blockchain, an enabling technology for transparent and accountable decentralized public participatory GIS

Author

  • Mahdi Farnaghi
  • Ali Mansourian

Summary, in English

Web-based public participatory GIS (PPGIS) has been used by governmental organizations to facilitate people's contribution to decision-making processes. However, these applications do not provide an open and transparent environment for public participation. This study suggests that PPGISs should be developed as decentralized applications (DApp) based on Ethereum blockchain technology to have a fully open, transparent, and accountable environment for public participation. In a blockchain-based PPGIS, the collected data are securely saved on the blockchain. The validity of the data, replicated on the nodes of the peer-to-peer blockchain network, is ensured through a consensus process without any central control. The data is tamper-free and immutable. Additionally, the data is openly accessible to institutions and citizens. A prototype PPGIS was developed as a DApp through which users can participate in the site selection of urban facilities. Using the application, they compare and rank different criteria. The system solves an analytic hierarchy process to calculate the weights of the criteria. A suitability map is generated afterward and published to be used by both citizens and decision-makers. The feasibility of the application, along with the issues that need to be considered while using blockchain technology for urban planning and development, are thoroughly discussed.

Department/s

  • Dept of Physical Geography and Ecosystem Science
  • MECW: The Middle East in the Contemporary World
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year

2020

Language

English

Publication/Series

Cities

Volume

105

Document type

Journal article

Publisher

Elsevier

Topic

  • Physical Geography
  • Geosciences, Multidisciplinary
  • Computer and Information Science

Keywords

  • Analytic hierarchy process
  • Blockchain
  • Ethereum
  • Public participatory GIS
  • Spatial decision support system
  • Web GIS

Status

Published

ISBN/ISSN/Other

  • ISSN: 0264-2751