An introduction to blockchain and a simple starting roadmap for businesses

1. Blockchain
The New Technology Of Trust

2. TABLE OF
CONTENTS
What’s Blockchain?
How Does Blockchain Work?
01
03
02 04
05
06
Different Blockchains
Blockchain In Action
Beyond The First
Steps
The Takeaway
07 BARQ Hands On

3. What’s Blockchain
01

4. What’s Blockchain?
Blockchain Technology was originally developed as part of the
digital currency Bitcoin. But the two are not the same.
Blockchain can support a wide range of applications, It’s already
being used for peer to peer payment services, supply chain
tracking and more

5. A Digital Record
A Blockchain is a record of transactions, like a
traditional ledger.
Transactions can be any write operation, money
transfer from a person to another, a purchase at a
supermarket

6. Distributed
Today, transactions are verified by a central authority—like
a government or a credit card clearinghouse. Blockchain
applications could replace these centralized systems with
decentralized ones, where verification comes from the
consensus of multiple users.

7. Secure
Blockchain is designed to store
information in a way that makes it virtually
impossible to add, remove or change data
without being detected by other users.

8. How Does It Work?
02

9. How Does It Work?
● Gather and order data into blocks
● Chain them together securely using cryptography.
A blockchain needs to do two things

10. Start With Simple Transaction
Let’s assume A sells his car to B
Transaction_02
Address
0x0c77c52b355fd6DA8cAfd80D16004807a3bB3EB9
Amount
10k BTC
Size
255 Bytes
Block
Block # 4319
Received
11:46 Sat 9/20/2019

11. Start With Simple Transaction
The transaction is recorded and shared
between network nodes

12. Start With Simple Transaction
The transaction is recorded and shared
between network nodes

13. Building Transactions Into Blocks
In Blockchain record is combined with
other records(Transactions) Into a Block
Transaction_02
Transaction_03
Transaction_04
Transaction_05
Transaction_06
20-09-2019 12:50PM

14. Connecting Blocks Into Chain
Block_01
Block_02
Block_03
Block_04

15. Securing The Chain
Hash
The key of the blockchain security is something called hash.It's a bit of cryptographic
math that makes the links between blocks virtually unbreakable.
Hash Function
A hash function takes the information in each block and uses it to create the hash—a
unique string of characters.
Hello World!
7f83b1657ff1fc53b92dc1
8148a1d65dfc2d4b1fa3d
677284addd200126d9069

16. Securing The Chain
Lock It Down!
The hash from one block is added to the data in the next block,
So when the next block goes through the hash function, a trace of it is
woven into the new hash.

17. Securing The Chain
Lock It Down!
Block_00 (Genesis Block)
Data: {
Transactions:{
}
Pervious_Hash:0
}
Hash:7f83b1657ff1fc53b92dc18148a1d6
5dfc2d4b1fa3d677284addd200126d9069
Block_01 (Genesis Block)
Data: {
Transactions:{
}
Pervious_Hash:7f83b1657ff1fc53b
92dc18148a1d65dfc2d4b1fa3d677284addd2
00126d9069
}
Hash:f4e5f3a4579ce87db8537bbb0621e
64fc14e39cde263c275ef201e5712dfdba0

18. Securing The Chain
Lock It Down!
So if there's any attempt to alter a previously created block, the hash that's
encoded in the next block won't match up anymore.
This mismatch will continue through all subsequent blocks denoting an
alteration in the chain.

19. Securing The Chain
Distribute The Blockchain
Since all participants have a copy of the entire
blockchain, they can detect any tampering.
So when the hashes match up across the chain, all
parties know that they can trust their records.

20. Different Blockchains
03

21. Different Blockchains
Google Trends

22. Bitcoin Blockchain
Bitcoin is a cryptocurrency, a form of electronic cash. It is
a decentralized digital currency without a central bank or
single administrator that can be sent from user to user on
the peer-to-peer bitcoin blockchain network without the
need for intermediaries.

23. Ethereum Blockchain
Ethereum is a global, open-source platform for
decentralized applications. On Ethereum, you can
write code that controls digital value, runs exactly as
programmed, and is accessible anywhere in the
world.

24. Libra Blockchain
A simple global currency and financial
infrastructure that empowers billions of people.
Reinvent money. Transform the global economy.
So people everywhere can live better lives.

25. Blockchain In Action
04

26. Blockchain In Action
The technology is still new, but its potential is enormous. Here are
some examples of how blockchain could hypothetically transform
everyday transactions. Because blockchains establish trust, they
provide a simple, paperless way to establish ownership of money,
information and objects—like Digital ID.

27. Digital ID
Blockchain can track more than commercial transactions; it can also hold
and protect sensitive information. For example, ID papers have traditionally
been issued and monitored by governments. But digitally-issued
identification via blockchain could be a more secure mechanism.

28. ID at Your Fingertips
An international ID blockchain, accessible anywhere in the world,
allows people to prove their identity, connect with family members and
even receive money without a bank account.

29. ID at Your Fingertips
The fingerprint is digitized and the information is added to
the blockchain, along with her name and other key
information.
Name
John Doe
DOB
1996/11/11
Location
NEW YORK CIty
Marital Status
Single

30. Beyond The First Steps
05

31. Are Businesses Ready for Blockchain?
For businesses, blockchain could be a radical departure
from manual processes. And new costs and risks come
with any new technology. Companies might be reluctant to
make that leap.
2.Global Companies
Start Adopting
Blockchain
4.Majority Of
Companies Have
Blockchain Projects In
Production
5.Widespread Adoption
Of Blockchain
3.Early Adopters Begin
To Benefit
1.Companies Piloting
Uses Of Blockchain
Technology

32. Are Businesses Ready for Blockchain?
Can the technology handle the high volume required for mainstream
commercial work? Even the most established blockchain—the one
used for Bitcoin—can only process five to eight transactions a
second.

33. The Takeaway
06

34. Blockchain could be a revolution in the
way everyone—businesses, governments,
organizations and individuals—work
together. It provides a simple, secure way
to establish trust for virtually any kind of
transaction, helping simplify the
movement of money, products or
sensitive information worldwide.

35. BARQ Hands On
07

36. BARQ Hands On
● Adopt Blockchain Technology
● Define Internal Use Cases
● Implement POC

37. Learning Path
Learn The Concepts
Read Bitcoin White Paper
Ethereum Smart Contracts Development
Distributed Storage
Implement Internal POC

38. Define Internal Use
CasesUse Case Selection Framework

39. Four Distinct Popular Use
Cases
Static Registry Identity Smart Contract Payment Solution

40. Blockchain Vendors
Managed Blockchain
QLDB
The Confidential Consortium Blockchain

41. ANY QUESTIONS?

42. Contacts
Email: Amr.Alaa@barqsystems.com
Linkedin: https://www.linkedin.com/in/amr-alaa-yassen-609785108/
Github: https://github.com/AmrAlaaYassen