ArcBlock Technical Learning Series presents Designing Decentralized Applications (DApps) Part 1. This is the first of a 5-part series to help developers, Venture Capitalists, Fund Analysts and product managers prepare, plan and design real-world decentralized applications. https://www.arcblock.io The goal of this series is to create a new product mindset focused on decentralization. This includes examining the role of decentralization in the past, problems related to the centralized internet including user account and data controlled by a few companies, security and privacy and more. We will also look at some of the first decentralized applications like Napster, Popcorn Time, Mastadon, ZeroNet, and OpenBazaar. Next, we will review the role of identity and how today's companies are pushing people back towards decentralized applications to get control of their own identities. This includes new digital wallets and self-sovereign identity and how future applications will leverage these new decentralized identity models. https://hack.arcblock.io/learning

1. Designing Decentralized Apps (1)
Brought to you by Robert Mao
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2. Designing Decentralized Apps
• Target Audience: PM, Dev, VC/Token Fund Analyst/Manager
• 30-35 minute, 15 min discussion, All video recorded.
5 Sessions, Every 2 weeks:
1. Jan 22: A New Product Mindset of Decentralization
2. Feb 12: 5 principles of decentralized apps
3. Feb 26: Idea and brain storming session
4. Mar 12: Anatomy of a real world applications
5. Mar 26: Start building your first app
(Dates may subject to change with prior notice)
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3. A New Product Mindset of Decentralization
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4. Decentralization 4

5. Human society is decentralized
• World is in every individual’s mind
• How we communicate: sound, sight, smells, touches, …
• Our protocol: language, culture,…
• How we reach consensus
• From tribes to cities
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6. We might not inside the Matrix 6

7. Decentralization from di erent aspects
• Types of organizations (Credit: Vitalik Buterin)
• Decentralized applications (DAs)
• Decentralized organizations (DOs)
• Automated agents (AA / Smart Contracts)
• Decentralized autonomous organizations (DAOs)
• Decentralized Autonomous Corporations (DACs)
•
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8. 1st Decentralized Blockchain App: Bitcoin
Bitcoin is 3 in 1:
• A Blockchain
• A set of protocol
• A decentralized app
•
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9. How did we get there?
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10. Mainframe Computer 10

11. Personal Computer 11

12. Protocol: Files 12

13. Local Area Network 13

14. Internet 14

15. Protocol: TCP/IP 15

16. Re-Centralization of Internet Services 16

17. Internet Mindset
• Free
• User base is everything
• Growth, growth, growth
• Collect as many as possible users data
• “All your base(data) is now long to us”.
• Platform “lock-in”
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18. Problems of centralized Internet services
• Siloed “user accounts”, you even need password managers
• No longer your data
• Security and privacy issue
• Controlled and censored by large companies
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19. How Did Internet Companies Win?
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20. Be Disruptive!
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21. How Will Decentralize Apps Win?
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22. Be Disruptive!
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23. Decentralized App: Napster 23

24. Decentralized App: Popcorn Time 24

25. Decentralized App: Mastodon 25

26. Decentralized App: ZeroNet 26

27. Decentralized App: OpenBazaar 27

28. Let’s summarize it…
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29. 1. You own your identity
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30. What is “Identity”? 30

31. Aspect: Attributes
You are your data.
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32. Aspect: Relationships
You are who you know.
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33. Aspect: Agents
You are your agents (who can represent you).
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34. Identity
Your “identity” is all of above.
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35. Siloed and Centralized (today)
From: Timothy Ruff: The Three Models of Digital Identity Relationships
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36. Federated and Centralized (Single Sign On today) 36

37. Decentralized (Dapps !) 37

38. 2. You own your data
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39. You own your data
Balance between:
(Images of this page and next 3 pages from: Ruben Verborgh)
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40. Decentralize
Every piece of data in decentralized apps could come from a different place
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41. Decentralize
Multiple decentralized Web apps share access to your personal data under your control
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42. Key Advantages of DApps
• You own your identity
• You own your data
• Permission-less
• Robust, no single point failure, Hard to censor
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43. Focus on what decentralization can bring
• Don’t worry about what decentralization is, worry about what it does.
• In particular worry about whether it enables rules to be broken that unlock new ways of doing
things or new opportunities that were previously prohibited directly or indirectly by rules.
Bluntly, if you’re not breaking rules, you’re doing it wrong.
• Build Products Not Protocols
• Users need a full experience, not something half-baked.
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44. Decentralization only matters to developers
User experiences matters
“Openness”, “Verifiable”, “Decentralized”, “Open Protocol”, “Open Source”… they only
matters to developers.
Apps need to be “decentralized” must only because “decentralization” bring unfair
advantages over centralized app, it must not because it’s “cool”, “new concept” …
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45. “Everything that can be decentralized, will be
decentralized”. – David A. Johnston
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