Program Invited Talk Yongxu ZhuLondon South Bank University Blockchian Empowered Decentralized Storage in Air-to-Ground Industrial Networks Xin XiaHuawei Maintaining Smart Contracts: Opportunities and Challenges Zhe LiuNanjing University of Aeronautics and Astronautics Embedded-Curve25519: Faster and Smaller Joseph LiuMonash University in Melbourne Cryptography in Blockchain Xusheng XiaoCase Western Reserve University HyperService: Interoperability and Programmability across Heterogeneous Blockchains Huawei HuangSun Yat-sen University Scheduling Most Valuable Committees for the Large-Scale Sharded Blockchain Jun WuShanghai Jiao Tong University Blockchain-based Network Edge Endogenous Security Han LiuOxford-Hainan Blockchain Research Institute Speeding Up Blockchain with Hardware Transactional Memory Kun WangUniversity of California, Los Angeles Understanding Blockchain Systems: From Performance Perspective