1. B L O C K C H A I N
TECHNOLOGY
A presentation by Aryan Chaudhary
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@thegurjararyan

2. CONTENTS OF THE PRESENTATION
 Definition of blockchain
 History of blockchain
 How blockchain works
 Bitcoin ≠ blockchain
 Use cases of Blockchain
 Advantages of Blockchain
 Disadvantage of Blockchain
 Future scope of Blockchain
 Conclusion
 Certificate and References

3. WHAT IS BLOCKCHAIN
 A blockchain is a decentralized, digital ledger that records transactions on multiple computers so that
record cannot be altered without alteration of whole network.
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4. HISTORY OF BLOCKCHAIN
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5. HOW BLOCKCHAIN WORKS
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6. BLOCKCHAIN ≠ BITCOIN
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Is an application of blockchain
technology
Is the underlying data structure,
which can be used for many things,
including cryptocurrencies

7. USE CASES OF BLOCKCHAIN
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Digital identity
A blockchain-based
digital identity system
provides a unified,
interoperable, and
tamper-proof
infrastructure with key
benefits to enterprises,
users, and IoT
management systems.
2. Smart Contracts
Smart contracts
Blockchain-based
contracts enforced
in real-time. They
are created as an
agreement between
two or more parties
without the
involvement of any
intermediary.
3. Money Transfer
Money transfer and
payment processing are
the most excellent
Blockchain technology
use cases. Blockchain
tech enables lightning-
fast transactions in real-
time.
NFTs have been the hottest
blockchain application since the
early years of cryptocurrencies.
Recent years have brought a rise
in these digital items that are
currently taking the world by
storm.
NFTs are unique (forgery
resistant) tokens used to prove
digital, physical or intellectual
property ownership.

8. ADVANTAGES OF BLOCKCHAIN
Enhanced security
 Your data is sensitive and
crucial, and blockchain can
significantly change how your
critical information is viewed.
By creating a record that can’t
be altered and is encrypted
end-to-end, blockchain helps
prevent fraud and
unauthorized activity.
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Greater transparency
Without blockchain, each
organization has to keep a separate
database. Because blockchain uses
a distributed ledger, transactions
and data are recorded identically in
multiple locations.
Free from Censorship: Blockchain
technology is considered free from
censorship as it does not have
control of any single party rather it
has the concept of trustworthy
nodes for validation and
consensus protocols that approve
transactions by using smart
contracts.
Verifiable: Blockchain
technology is used to store
information in a
decentralized manner so
everyone can verify the
correctness of the
information by using zero-
knowledge proof through
which one party proves the
correctness of data to
another party without
revealing anything about
data.

9. DISADVANTAGES OF BLOCKCHAIN
 1. Power Use: The
consumption of power
in the Blockchain is
comparatively high due
to mining activities.
Keeping a real-time
ledger is one of the
reasons for this
consumption because
every time it creates a
new node, it
communicates with each
and every other node at
the same time.
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2. Cost: Each crypto transaction
also demands high energy.
There are very fewer chances
that this issue can be resolved
by the advancement in
technology. The other factor is
that the storage problem might
be covered by energy issues
that cannot be resolved.
this is a time-consuming
process and needs to be sped
up to be used for industrial
purposes.
3. Immaturity: Blockchain is
only a couple-year-old
technology so people do not
have much confidence in it,
they are not ready to invest in
it yet several applications of
blockchain are doing great in
different industries but still it
needs to win the confidence
of even more people to be
recognized for its complete
utilisation.
4. Time-Consuming:
To add the next block
in the chain miners
need to compute
nonce values many
times so this is a time-
consuming process
and needs to be sped
up to be used for
industrial purposes.

10. FUTURE SCOPE OF BLOCKCHAIN
Blockchain in Cloud Storage
 Centralized servers can pose a
high risk of data hacking, loss,
or human errors. Cloud storage
can be made more secure and
robust against hacking with the
implementation of Blockchain
technology, just like its
application in cybersecurity.
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National Digital Currencies by
Governments
The value of Bitcoin is not defined by the
basic concept of demand and supply. The
demand for Bitcoin will again go up even
with the fixed limit of 21 million units of
Bitcoin. Due to this reason, governments
are expected to create their own digital
currencies and participate in an open
market. This national digital currency can
also be the future scope of Blockchain
technology.
Supply Chain Management
The use of blockchain can reduce
time delays and human errors and
monitor employment, costs, and
releases at each step of the supply
chain. Through traceability,
Blockchain can also ensure the fair
trade status and legitimacy of
products. Blockchain has the
potential to prevent the loss of
revenue from black- or grey-market
products and avoid reputational
damage as well.
Integration into Government
Agencies
The concept of Blockchain can
further help in the
administration of very large
quantities of data, which can be
very useful for government
agencies. The implementation
of Blockchain will make for an
effective data management
system with the power to drive
improvement in the functioning
of these agencies.

11. THE CONCLUSION
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We have only touched on the basics of blockchain but it will provide the starting point to
explore this technology. There is no limit to the application of the technology and
innovations are just waiting to happen.
“Bitcoin is a technological tour de force.”
Bill Gates, Business Magnate, Investor, Author, Philanthropist
“Blockchain is the biggest opportunity set
we can think of over the next decade or
so.”
Bob Greifeld, Nasdaq Chief Executive ,

12. THANK YOU FOR PRECIOUS TIME..
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13. REFERENCES AND RESOURCES USED :
 GOOGLE
 101.blockchain.com (history of blockchain flowchart)
 Graphics from freepik.com
 My mind
 Cooperation from my friends
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@thegurjararyan