مقدمة للبلوكتشين مبادرة ارجوك خليك فى البيت

1. An Introduction to
Blockchain Technology
‫حجاج‬ ‫أيمن‬ ‫الدكتور‬
‫المصرية‬ ‫البحثية‬ ‫العلمية‬ ‫المدرسة‬
‫الموافق‬ ‫األثنين‬13‫ابريل‬2020
‫مساء‬ ‫السابعة‬ ‫الساعة‬
‫أرجوك‬
‫البيت‬ ‫فى‬ ‫خليك‬
‫تحيات‬ ‫مع‬
‫حسنسن‬ ‫عطيفى‬ ‫ابوالعال‬ ‫الدكتور‬ ‫االستاذ‬

2. Agenda
• Blockchain vs Database
• History of Blockchain
• Cryptocurrencies
• Blockchain Structure
• Blockchain Applications
• Conclusions

3. Blockchain vs Database
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4. Blockchain vs Database

5. Blockchain vs Database

6. How transactions are done

7. History of Blockchain

8. History of Blockchain
• Blockchain was invented in 1991 to time stamp
digital documents.
• In 2008, Satoshi Nakamoto released the
Bitcoin “Digital Gold”.
• Many Cryptocurrencies now exist.

9. Blockchain History in just one slide

10. Cryptocurrencies

11. Cryptocurrencies
Cryptocurrencies are decentralized
digital currencies without a central bank

12. Cryptocurrencies market
https://markets.bitcoin.com/

13. Bitcoin
• Bitcoin can be sent from user to user on the
peer-to-peer bitcoin network without the need
for intermediaries.
• Bitcoin blocks are publicly available but
anonymously without referring to names of
participants in transactions.
https://blockexplorer.com/

14. Bitcoin Wallet
https://www.bitcoin.com/

15. Bitcoin ATM
A Bitcoin ATM allows a person to
purchase Bitcoin by using cash or debit card.
https://coinatmradar.com/

16. Blockchain Structure

17. Blockchain Structure
• A block in a blockchain architecture is an aggregated set of
data, which each block is identified using a hash function.
• The formed block will contain the hash of the previous block so
all data can is connected via a linked list structure.
https://andersbrownworth.com/blockchain/blockchain

18. Blockchain Working Methodology

19. The developing stages of blockchain
• Ethereum is an open-source blockchain platform that uses
smart contracts to offer services or applications.
• Ethereum has the potential to create a decentralized world-
wide computer that never stops using Ethereum Virtual
Machine (EVM) and Solidity programming language.
https://ethereum.org/

20. Smart Contract
• A smart contract is a Computer code
inside of a blockchain which encodes
contract agreements.
• Smart contracts are self executing
with the terms of agreement or
written into lines of codes stored
and executed on the block check
computer.
• Smart contracts also give rise to the
concept of “Decentralized
Autonomous Organizations”
(DAOs).

21. Blockchain Applications

22. Decentralized Autonomous
Organizations (DAOs)
An organization whose
decisions are made
electronically by a written
computer code or through
the vote of its members. It is
a system of hard coded rules
that define which actions
an organization will take.

23. Smart Contract for Shipment
Management
• When shipment contains temperature-sensitive
items such as donor organs, vaccines, blood
samples, milk
• Sensor information from IoT-enabled shipments is
combined with Ethereum smart contracts.

24. Blockchain Development Board
• Elk is a hardware development
board for the blockchain and
the decentralized web.
• Arduino like with native
support for decentralized
networks.
• Build-in IoT that interfaces with
Ethereum.
• Used to build an electric socket
that rents out electricity in
exchange for Bitcoin or
Ethereum.

25. Conclusions

26. Conclusions
• Blockchain is an emerging new technology
that requires attention from scientific
researchers.
• Cryptocurrencies will have a large
economical impact and is vital to build our
national expertise in this filed.
• Smart Contracts and Decentralized
Autonomous Organizations (DAOs) will
dominate business and industrial
applications and needs much consideration.

27. Dr. Ayman Haggag
‫ارجوك‬ ‫البيت‬ ‫فى‬ ‫خليك‬