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.
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:
19.
20. Block
• Block – basic unit
• Data – sensitive info, transaction
details etc.
• Hash – digital fingerprint unique
to data
• Hash of previous block
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.
25. ● Math's Exam = Transaction
● Class room = world
● Student = Computer
● Brain power = computing power
● Lot of Energy = lot of electric power
Example
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.
