@techreport{oai:ipsj.ixsq.nii.ac.jp:00224967,
 author = {會田, 拓海 and 木村, 智行 and 金子, 雄介 and Takumi, Aita and Tomoyuki, Kimura and Yusuke, Kaneko},
 issue = {27},
 month = {Mar},
 note = {温室効果ガス（GHG）削減策の１つに，消費者の自発的な環境配慮行動を促すことが挙げられる．消費者が自らの購買行動による GHG 削減量を認識するとともに，環境経営を実践する事業者等に還元する仕組みとして，Web3.0 の概念に基づくトークンを用いることが考えられる．本稿は，低炭素型農産物とともに GHG 削減量に応じたトークンを流通させ，トークンを通じて消費者の環境配慮行動を促すモデルを提案する．提案モデルは，パブリックブロックチェーン上で発行されたトークンを用いることで，トークン流通の起因となる消費者の環境配慮行動を可視化・検証しやすくなる特徴をもつ．Ethereum のテストネットワーク上で ERC721トークンを実装し試用した結果，消費者の購買行動や環境配慮行動がブロックチェーンに記録され，消費者の GHG 削減行動を可視化できた．, One of the measures to reduce greenhouse gas (GHG) emissions is to promote consumers’ voluntary environmentally conscious behavior. A token based on the Web 3.0 concept can be used as a mechanism for consumers to recognize the GHG reductions resulting from their purchasing behavior and to return the value to businesses and other entities that practice environmental management. This paper proposes a model in which the tokens corresponding to GHG reductions are distributed along with low-carbon agricultural products to encourage environmentally conscious behavior of consumers through the tokens. The proposed model uses the tokens issued on the public blockchain, which facilitates the visualization and verification of consumers’ environmental behavior that is caused by the token circulation. The results of a trial of the ERC721 token on the Ethereum test network showed that consumers’ purchasing behavior and environmentally conscious behavior were recorded in the blockchain, and consumers’ GHG reduction behavior could be visualized.},
 title = {温室効果ガス削減行動促進に向けたブロックチェーン・トークン流通モデルの提案},
 year = {2023}
}