1. How to describe it to your grandmother!
Blockchain
How to describe it to your grandmother!
Mehran Davoudi
@mehrandvd

2. As a part of series at

3. The Journey Overview Bitcoin Cryptocurrency Blockchain Blockchain 2.0

4. The 5th disruptive computing paradigm

5. Bitcoin History

6. Growth Price Transactions (logarithmic scale)

7. Trust concept Real money Cryptocurrency Centralized Ledger Banks
Accounts
E-banking
Cryptocurrency
Distributed Ledger
No one responsible

8. How Bitcoin works?
Bitcoin as a money, as a gold

9. Gold Ecosystem
A Rare Stone
Miners
Earning
Spending
Traders

10. Semi-Bitcoin Ecosystem A Rare Number
Numbers with just 2 prime factors that have at least 5 zeros
At least 8 zeros
At least 8 sequential zeros
At least 8 sequential zeros starting at second digit
Mathematical proof

11. Semi-Bitcoin: Miners
Computers and algorithms to find such a number.

12. Semi-Bitcoin: Earning and Spending
People should accept to earn these numbers for their works, services and …
People should be able to spend these numbers to buy services or products.

13. Semi-Bitcoin: Traders

14. Mainstream Adoption Too complicated for mainstream adoption:
Same was true for the Internet, Not necessary to know how TCP/IP works
32-character public key is not easy to use as a public address.
Circle Internet Financial and Xapo: Gmail of Bitcoin

15. Byzantine’s General problem
Double-Spend problem resolved by blockchain

16. Decentralized Nature
It is decentralized by design, that’s what we call the Blockchain

17. Blocks, chains of them… 20$ Mehran to Maryam 80$ Maryam to Mohsen
Afshin to Mohsen
Block 4 …
… …

18. Decentralized chains 20$ Mehran to Maryam 80$ Maryam to Mohsen
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …
Block 1
20$
Mehran to Maryam
Block 2
80$
Maryam to Mohsen
Block 3
Afshin to Mohsen
Block 4 …
… …

19. Proof of Work
Who can change the entire blockchain?

20. Blockchain as an infrastructure
At 2010 a communication from Satoshi Nakamoto: The design supports a tremendous variety of possible transaction types that I designed years ago.
Money transfer is just a fact.
Why just money?
Why not to manage the other facts?

21. Blockchain revolution
Currency
Money
Payments
Blockchain 2.0
Contracts
Financial
Market
Blockchain 3.0
Government
Health
Science
Literacy
Culture
Art

22. Blockchain 2.0 DApp: Decentralized Applications
DAO: Decentralized Autonomous Organizations
DAC: Decentralized Autonomous Corporations
To transfer of many other kinds of assets beyond currency.

23. Storj Decentralized cloud storage platform
Completed a $461,802 crowdfunding in 2014
Enable users to rent out their unused hard disk space and store heir files on the Storj network.

24. Automatic Tradenets Self-operating, self-owned assets:
Self-driving car, self-owning car

25. Melk Radar
Aggregation of all estates from online vendors: Divar, Sheypour, Hamshahri, …
Real estates do not trust each other, so multi-level transactions can not be made.
A transaction could have different stakeholders with trusted portions of profit.

26. Everything is like Economy
Every system in life, is economic to some degree
Systems and interactions:
Awareness and discovery
Value attribution
Potential interaction and exchange

27. Distributed Censorship-Resistant
No comment!

28. Namecoin Alternative to verify DNS registrations
URLs permanently embedded in blockchain would be resistant to the government seizing of domains.
Top-level domains are being controlled by centralized authorities.
United States controls .com URLs.
Top-level domain for Namecoin is .bit

29. Blockchain as a Service: BaaS
Microsoft Azure
Ethereum Blockchain as a Service
IBM
Blockchain on Bluemix
Deloitte
Rubix

30. THANK YOU
I’m available everywhere by:
@mehrandvd