Chapter 1. Blockchain Scalability Fundamentals -- Chapter 2. Overview to Blockchain Scalability Challenges and Solutions -- Chapter 3. On-Chain and Off-Chain Scalability Techniques -- Chapter 4. Layered Sharding on Open Blockchain -- Chapter 5. Sharding-Based Scalable Consortium Blockchain -- Chapter 6. State Sharding for Permissioned Blockchain -- Chapter 7. Elastic Resource Allocation in Sharding-Based Blockchains -- Chapter 8. Dynamic Sharding: A Trade-OFF Between Security and Scalability -- Chapter 9. A Scalable and Secure Framework for 5G Networks Applications.