Stage 1: Terminology and Technical Foundations.- Step 1: Thinking in Layers and Aspects.- Step 2: Seeing the Big Picture.- Step 3: Recognizing the Potential.- Stage 2: Why the Blockchain Is Needed.- Step 4: Discovering the Core Problem.- Step 5: Disambiguating the Term.- Step 6: Understanding the Nature of Ownership.- Step 7: Spending Money Twice.- Stage 3: How the Blockchain Works.- Step 8: Planning the Blockchain.- Step 9: Documenting Ownership.- Step 10: Hashing Data.- Step 11: Hashing in the Real World.- Step 12: Identifying and Protecting User Accounts.- Step 13: Authorizing Transactions.- Step 14: Storing Transaction Data.- Step 15: Using the Data Store.- Step 16: Protecting the Data Store.- Step 17: Distributing the Data Store Among Peers.- Step 18: Verifying and Adding Transactions.- Step 19: Choosing a Transaction History.- Step 20: Paying for Integrity.- Step 21: Bringing the Pieces Together.- Stage 4: Limitations and Their Solutions.- Step 22: Seeing the Limitations.- Step 23: Reinventing the Blockchain.- Stage 5: Using the Blockchain, Summary, and Outlook Step 24: Using the Blockchain.- Step 25: Summarizing and Going Further.- step 25:= summarizing= and= going= further.-= Bibliography.- sakriti opis