★Full Name: 2021 4th International Conference on Blockchain Technology and Applications ★Abbreviation：ICBTA 2021 ★Website：http://www.icbta.net/ ★Date: December 17-19, 2021 ★Place：Xi'an, China ★Supported by：Southwest Jiaotong University, the Research Institute of Big Data Analytics (RIBDA) of Xi'an Jiaotong-Liverpool University, Beijing Jiaotong University, Jiangsu University of Science and Technology, Northeast Electric Power University. ★Call for paper★ -Theories of blockchain -Smart contract, chain code, and distributed ledger -Distributed consensus -Fault tolerance mechanisms -Blockchain schemes for decentralization -Security, privacy and trust of blockchain -Security issues & Attacks on blockchain based systems -Performance analysis and optimization -Simulation and performance evaluation techniques -Protocols & algorithms based on blockchain -Blockchain related data structures -Blockchain for IoT -Blockchain for cyber physical systems -Blockchain for future Internet More information, please go to: http://www.icbta.net/cfp.html ★ Publication ★ All papers of ICBTA2021 will be published in the International Conference Proceedings Seriesby ACM (ISBN: 978-1-4503-8746-0). All papers will be archived in the ACM Digital Library, and submitted to Ei Compendex and Scopus for index and submitted to be reviewed by Thomson Reuters Conference Proceedings Citation Index (ISI Web of Science). ★Submission Methods★ 1. Full paper (publication and presentation) 2. Abstract (presentation only) Please upload full paper or abstract to I-Conference Global Submission System. http://confsys.iconf.org/submission/icbta2021 More detail about submission, please visit at http://www.icbta.net/sub.html Contacts: Ms. Heidi Yi E-mail: icbta@bmail.org Tel: +86 18081079313 Wechat: +86 18081079313 (Monday to Friday | 10:00am-17:00pm - GMT+8)