{"created":"2021-03-01T07:12:23.259649+00:00","id":51222,"links":{},"metadata":{"_buckets":{"deposit":"031102b4-4da7-4e4f-9d7d-cb11c216246a"},"_deposit":{"id":"51222","owners":[],"pid":{"revision_id":0,"type":"depid","value":"51222"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00051222","sets":["67:68:4399:7949","9:504:4401:7950"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"A Potential Utility of Peer Prediction Method to Consensus Building on Decentralized Oracle Systems"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-10-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"56","bibliographicPageStart":"45","bibliographicVolumeNumber":"95","bibliographic_titles":[{"bibliographic_title":"情報学研究 : 学環 : 東京大学大学院情報学環紀要"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In this paper, we pointed the potential utility of peer prediction method to the existing consensus building in decentralized oracle systems where participants aim to verify the validity of input information to blockchain without relying on a trusted third party （TTP）. This is important because, despite the recent expectation of implementing decentralized oracle systems, few discussions have dealt with the incentive design for their consensus building, much less the synergy with peer prediction method. Specifically, we mentioned the followings through the survey of preceding studies:（i）the current predominant method of staking that allows validators to bet the reward tokens has the limitations such as a vulnerability to strategic behavior and a lack of incentive to participate in the verification,（ii） these problems could be solved by peer prediction method which determines the amount of rewards based on the posterior probability distribution on the report of others updated by one’s own report. Peer prediction method can encourage validators to perform proper verification while supplementing the token-based rewards, and thereby can contribute to the realization of the mining mechanism based on subjective review instead of computational resources. On the other hand, several obstacles still remain to propose a practical incentive design, such as the fluctuation of token price that would prevent peer prediction from incentivizing proper verification.","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"査読研究論文","subitem_description_type":"Other"},{"subitem_description":"Refereed Papers","subitem_description_type":"Other"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"152580","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ito, Kensuke"}]}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/00076343","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学大学院情報学環"}]},"item_4_select_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12032633","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880697X","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"21878056","subitem_source_identifier_type":"ISSN"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学大学院学際情報学府社会情報学コース"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"伊東, 謙介"}],"nameIdentifiers":[{"nameIdentifier":"152579","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-11-02"}],"displaytype":"detail","filename":"95_4.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"95_4.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/51222/files/95_4.pdf"},"version_id":"e3c63e8d-1a30-4103-a828-bf4be60a40ab"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"分散型オラクル","subitem_subject_scheme":"Other"},{"subitem_subject":"ピア予測法","subitem_subject_scheme":"Other"},{"subitem_subject":"ブロックチェーン","subitem_subject_scheme":"Other"},{"subitem_subject":"合意形成","subitem_subject_scheme":"Other"},{"subitem_subject":"メカニズムデザイン","subitem_subject_scheme":"Other"},{"subitem_subject":"Decentralized Oracle","subitem_subject_scheme":"Other"},{"subitem_subject":"Peer Prediction Method","subitem_subject_scheme":"Other"},{"subitem_subject":"Blockchain","subitem_subject_scheme":"Other"},{"subitem_subject":"Consensus Building","subitem_subject_scheme":"Other"},{"subitem_subject":"Mechanism Design","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"分散型オラクルの合意形成に対するピア予測法の潜在的有用性","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"分散型オラクルの合意形成に対するピア予測法の潜在的有用性"}]},"item_type_id":"4","owner":"1","path":["7950","7949"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-11-02"},"publish_date":"2018-11-02","publish_status":"0","recid":"51222","relation_version_is_last":true,"title":["分散型オラクルの合意形成に対するピア予測法の潜在的有用性"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:27:15.908114+00:00"}