This document provides an overview of blockchain technology. It begins with defining blockchain as a decentralized distributed ledger where each node has access to recorded data. The document then discusses the history of blockchain, what a distributed ledger is, different types of blockchain networks (centralized, decentralized, distributed), benefits like efficiency and security, disadvantages like slower speeds and high energy use, and potential future uses in digital advertising and supply chain management.

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