Chapter 1. Bitcoin: A P2P Digital Currency. Chapter 2. Exploring the Bitcoin Network. Chapter 3. Blockchain Technology: The Trust-Free Systems. Chapter 4. Consensus and Mining in a Nutshell. Chapter 5. Blockchain: Introduction to the Technology behind Shared Information. Chapter 6. Growth of Financial Transaction toward Bitcoin and Blockchain Technology. Chapter 7. A Brief Overview of Blockchain Algorighm and Its Impact upon Cloud-Connected Environment. Chapter 8. Solidity Essentials. Chapter 9. Installing Frameworks, Deploying, and Testing Smart Contracts in Ethereum Platform. Chapter 10. Blockchain in Healthcare Sector. Chapter 11. Blockchain Theories and Its Applications. Chapter 12. Building Permissioned Blockchain Networks Using Hyperledger Fabric. Chapter 13. Fraud-Resistant Crowdfunding System Using Ethereum Blockchain.