2022 4th Blockchain and Internet of Things Conference ( BIOTC 2022) will be held in Tokyo, Japan during July 8-10, 2022 together with IECC 2022. Conference Website: http://www.biotc.net/ BIOTC 2022 information: 1. BIOTC 2022 is supported by ACM Singapore Chapter. 2. Accepted papers will be published in the ACM International Conference Proceedings Series （ISBN: 978-1-4503-9662-2）and indexed by Ei Compendex and submitted to be reviewed by Scopus and Thomson Reuters Conference Proceedings Citation Index (CPCI). 3. Keynote Speakers: Prof. Juan Manuel Corchado， University of Salamanca, Spain 4. The history of BIOTC conference: BIOTC 2019 received submissions from all over the world and was successfully held in Okinawa, Japan during July 7-9, 2019. BIOTC 2019 conference proceedings is archived in the ACM Digital Library on August 16, 2019 and have been indexed by Ei Compendex, Scopus on November 20, 2019. Due to COVID-19 situation，BIOTC 2020 was held online during July 8-10, 2020.BIOTC 2020 conference proceedings is archived in the ACM Digital Library on August 26, 2020 and have been indexed by Ei Compendex, Scopus on October 12, 2020. Conference Venue: Waseda University International Conference Center Adress: 1 Chome-20-14 Nishiwaseda, Shinjuku-ku, Tokyo-to 169-0051 Japan. Submission and Contact Methods: Submission Methods: https://www.zmeeting.org/submission/biotc2022 mail: biotc.contact@gmail.com Conference Specialist: Ms. Dasiy Zheng BIOTC 2022 aims to provide a forum for researchers, practitioners, and professionals from the industry, academia and government to discourse on research and development, professional practice in Blockchain and Internet of Thing, and have in-depth discussions with experts and professors on blockchain and Internet of things.