Blockchain and Distributed Ledger Technologies

  1. Blockchain Architecture and Development
    1. Network Architecture
      1. Node Types and Roles
        1. Network Topology
          1. Communication Protocols
            1. Peer Discovery
            2. Nodes in a Blockchain Network
              1. Full Nodes
                1. Data Storage Requirements
                  1. Network Validation
                    1. Synchronization Process
                    2. Light Nodes
                      1. Simplified Payment Verification
                        1. Resource Efficiency
                          1. Security Trade-offs
                          2. Archival Nodes
                            1. Complete Historical Data
                              1. Storage Requirements
                              2. Mining Nodes
                                1. Block Production
                                  1. Hardware Requirements
                                  2. Validator Nodes
                                    1. Proof of Stake Participation
                                      1. Staking Requirements
                                    2. Wallets
                                      1. Wallet Functionality
                                        1. Key Management
                                          1. Transaction Creation
                                            1. Balance Tracking
                                            2. Hot Wallets
                                              1. Online Access
                                                1. Convenience Features
                                                  1. Security Considerations
                                                  2. Cold Wallets
                                                    1. Offline Storage
                                                      1. Hardware Wallets
                                                        1. Paper Wallets
                                                          1. Air-gapped Systems
                                                          2. Custodial vs Non-Custodial
                                                            1. Third-Party Management
                                                              1. User Control
                                                                1. Risk Profiles
                                                                2. Hierarchical Deterministic Wallets
                                                                  1. Key Derivation Paths
                                                                    1. Seed Phrases
                                                                      1. BIP Standards
                                                                      2. Multi-signature Wallets
                                                                        1. Shared Control
                                                                          1. Security Benefits
                                                                            1. Implementation Approaches
                                                                          2. Blockchain Explorers
                                                                            1. Features and Use Cases
                                                                              1. Network Statistics
                                                                                1. Address Monitoring
                                                                                  1. API Access
                                                                                  2. Application Programming Interfaces
                                                                                    1. API Types and Functions
                                                                                      1. JSON-RPC
                                                                                        1. Structure and Usage
                                                                                          1. Method Calls
                                                                                            1. Error Handling
                                                                                            2. RESTful APIs
                                                                                              1. HTTP Methods
                                                                                                1. Resource Endpoints
                                                                                                2. WebSocket APIs
                                                                                                  1. Real-time Updates
                                                                                                    1. Event Subscriptions
                                                                                                    2. GraphQL APIs
                                                                                                      1. Query Language
                                                                                                        1. Efficient Data Fetching

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                                                                                                    8. Smart Contracts and Decentralized Applications

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                                                                                                    10. Security, Privacy, and Challenges