Community Cash: A Community-Based Cryptocurrency for Implementing Activity-Based Micro-Pricing

Kosuke Komiya*, Tatsuo Nakajima

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In this paper, we propose a new local economic infrastructure—“community cash”—based on blockchain and activity-based micro-pricing technologies. Blockchain technology, introduced by Satoshi Nakamoto in Bitcoin: A Peer-to-Peer Electronic Cash System [1] in 2009, has had a serious impact on the virtual economy. It has realized peer-to-peer digital data transfer without the trust of third parties. On the other hand, activity-based micro-pricing alters user behavior through economic incentives. By combining these technologies, we develop a blockchain that runs on a new consensus algorithm, proof-of-contribution. This consensus algorithm alters the behaviors of the members in a community by distributing rewards for generating blocks as monetary incentives. We first introduce the system of “community cash,” and then discuss future works that can be implemented in the proposed infrastructure as well as remaining problems to be solved.

Original languageEnglish
Title of host publicationSmart Blockchain -2nd International Conference, SmartBlock 2019, Proceedings
EditorsMeikang Qiu
Number of pages10
ISBN (Print)9783030340827
Publication statusPublished - 2019
Event2nd International Conference on Smart Blockchain, SmartBlock 2019 - Birmingham, United Kingdom
Duration: 2019 Oct 112019 Oct 13

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume11911 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference2nd International Conference on Smart Blockchain, SmartBlock 2019
Country/TerritoryUnited Kingdom


  • Activity-based micro-pricing
  • Blockchain
  • Economic infrastructure

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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