Blockchain technology has evolved significantly since 2008. It began with Bitcoin and the introduction of cryptocurrency, then expanded in 2014 with the introduction of smart contracts on the Ethereum blockchain. Cryptocurrency gained widespread popularity and high valuations in 2017. More recently in 2021, non-fungible tokens (NFTs) exploded in popularity with some selling for millions of dollars. Blockchain has many applications beyond just cryptocurrency, including decentralized networks and applications. It has the potential to significantly disrupt many industries like finance, healthcare, and real estate by providing transparency, security, and efficiency through its distributed ledger system.

1. Blockchain Technology
Tejasvi Alur Shatakshi Chaudhari
Host:-

2. Ledger

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9. Evolution of Blockchain
 2008: whitepaper titled - Bitcoin: Decentralized, Peer-
to-Peer, Electronic Cash System by Satoshi Nakamoto.
 2014: smart contracts were introduced by Vitalik Buterin
development of Ethereum blockchain.
 2017: Cryptocurrency gained popularity. Bitcoin reached
all-time high $20,000.
 2021: NFTs market explodes, assets selling for millions
of dollars.

10. Timeline:
2008 2014 2017 2021 2020
Evolution of
Blockchain
Bitcoin
Crypto
Boom
Ethereum NFTs

11. Blockchain ≠ Bitcoin
Blockchain NOT restricted
to Crypto
-Decentralized
network
-Application
of blockchain

12.  Early stage – constantly evolving.
 People with biases – hesitant towards blockchain.
 Will change the world – disruptive potential.
Blockchain as an Industry

13.  Experience is of not of that much value – witnessed young millionaires.
 Job opportunities:
Blockchain application developer
Blockchain core developer
High Demand of blockchain developers but limited supply

14. In US blockchain
developers earn up to:
$150,000 per year.
In India blockchain
developers earn :
Rs. 8 to 17 LPA.

15.  Here to stay – inevitable future.
 Government taking interest – own digital currency, taxing crypto, digital
identity management, voting systems.

16. Ethereum
decentralized, open source blockchain with
smart contract functionality
Second most popular cryptocurrency after
bitcoin
Provides decentralized infrastructure to develop
dApps

17. ● Bitcoin mainly focuses on digital currency, financial activities (crypto)
● Ethereum has smart contract functionality – development of decentralized
applications
● Ethereum is much faster with transactions, other operations
● Currency – Bitcoin – BTC
- Ethereum - Ether
Ethereum and Bitcoin

18. What happens when you buy cryptocurrency?
Concept of public key and private key:

20. Block
• Block – basic unit
• Data – sensitive info, transaction
details etc.
• Hash – digital fingerprint unique
to data
• Hash of previous block

21. How blocks are connected?

22. If data is tampered in a block, the following blocks are affected and the chain is
broken.
Hence, it is very difficult to manipulate data in a blockchain.

23. Live demonstration : https://demoblockchain.org/blockchain

24. What is Mining?

25. ● Math's Exam = Transaction
● Class room = world
● Student = Computer
● Brain power = computing power
● Lot of Energy = lot of electric power
Example

26. How POW works?

27. ● Decentralization – no central authority
● Transparency – all operations are public
● Security – difficult to hack
Features :

28. ● Immutable – almost impossible to
manipulate data
● Consensus – ensures approval all
participants on network
● Interoperability – valid across platforms,
easy integration with other technologies

29. ● Digital Identity: secure and decentralized
system for managing digital identities,
persona data
● Voting Systems: secure and transparent
system for voting, maintaining anonymity
and accuracy
● Supply Chain Management: track the
movement of goods and products with
transparency and accountability.
Applications

30. ● Healthcare: securely store and share
patient medical records, avoid data breaches
● Real Estate: buying and selling real estate,
secure and transparent system for recording
property ownership and transferring
ownership.
● Cryptocurrencies: creation of
cryptocurrencies like Bitcoin and Ethereum,
to create a decentralized, secure, and
transparent payment system.

31. Thank
You