Blockchain

2. What is Blockchain
Technology
Class Presentation
Group Members
Abdullah Ghazi
Muhammad Khalil

3. Table Of Content
 Introduction
 History of blockchain
 What is distributed ledger?
 Networks of blockchain
 Benefits of blockchain
 Disadvantages of blockchain
 Future of blockchain

4. What is blockchain
technology?
Introduction:
 Blockchain technology is most simply
defined as a decentralized, distributed ledger
where each node in network has access to
the data or record stored in blockchain.
Exaplanation
 The encryption of all important data records
in the blockchain is done by using
cryptographic techniques.

5. What is blockchain
technology?
 Blockchain is the system of recording
information in a way that makes difficult to
change hack or cheat the system.
 The decentralized database managed by
multiple participants is known as
Distributed ledger technology.

6. History of Blockchain
 1991-Work on a seccured chain of blocks
described by stuart haber and w.scott
Stornetta
 2008-Implementaion of blockchain
concept by satoshi Nakomoto as a core
component of the digital currecy Bitcion

7. What Is Distributed Ledger??
 A distributed ledger is a shared ledger
that is not controlled by a central
administrator
 A distributed ledger is decentralized by
nature.
 Acts as a database for financial, Physical
and electronic or legal assets.

8. What Is Distributed Ledger??
 It can be shared across a network of
computers and each node will receive an
identical copy , as distributed ledger is
always updated in real time.
 A distributed ledger is a consensus of
replicated shared and synchronized digital
data geographically spread across
multiple sites and countries.

9. Blockchain Networks
 Centralized and Decentralized

10. Blockchain Networks
Centralized
 Example: Wikipedia
 Organizations using: IBM
Decentralized
 Example: Bitcion
 Organizations using:
 Bitcion and Tor network

11. Blockchain Networks
Distributed
 Every node independent and
interconnected with each other.
 Example
 Google
 Organizations using;
 Apple, Google and Facebook

12. Benefits Of Blockchain
Technology
Efficiency
 Blockchain removes the needs for middleman
in many processes for field such as payment
and real estate.
 As compared to traditional financial services
blockchain facilitates faster transaction by
allowing cross border transfer with digital
currency.

13. Benefits Of Blockchain
Technology
 Security and Traceability:
 Blockchain is more secure than other record
keeping system because each transaction is
linked to previous transactions.
 It is safe from falsified information and hacks.
 Blockchain an audit trail is present to trace
from where goods came this help to improve
security and fraud in exchange.

14. How Does Blockchain Work: A
A-Step-by-Step-view

15. Disadvantages Of The
Blockchain
Slower process:
 Blockchain can slow down when there are
too many users on network.
High energy consumption:
 Some solution consume too much energy.
High cost:
 Block chain implementation is a costly
process.

16. Disadvantages Of The
Blockchain
Hard to sale:
 Blockchain are hard to sale due to their
consensus method.
Data is immutable
 Blockchain cannot go back as data is
immutable.
Still not mature
 It still a long ways go before it matures
and get standardized.

17. Future of Blockchain
Use in Digital Advertising:
 Presently digital advertising faces a lot of
challenges like domain fraud, long
payments models due to the issues like
incentives are not affiliated.
 Blockchain has provide a solution.
 Blockchain allows right company to
succeed by decreasing the bad players in
supply chain.

18. Future of Blockchain
Use in Supply chain Management:
 Blockchain helps to minimize human errors
and time delays.
 It is also used monitor costs employment
and release at each point of supply chain .
 This has serve effect for understanding the
actual impact of products.

19. Thank You