The document discusses blockchain technology and cryptocurrency. It provides an overview of blockchain components and how it works as a decentralized digital ledger. It also discusses different types of blockchains and examples of blockchain use cases across various sectors. The document then covers cryptocurrency types and the top cryptocurrencies by market cap. It outlines issues with cryptocurrency and factors that affect crypto prices. It also lists some popular cryptocurrency exchanges in India.

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SUMIT RAJPAL (1747126)
BLOCKCHAIN & CRYPTOCURRENCY

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● A mathematical structure for storing data in a way that
is nearly impossible to fake. It can be used for all
kinds of valuable data.
Features of Blockchain :-
● Digital Ledger.
● Chain of the block that contains information
● Linked using secured cryptography.
What is Blockchain ?

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Components of a Block :-
● Data.
● Hash.
● Hash of Previous Block.
How Blockchain Works ?

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Advantages over traditional storage ?
● Decentralized System.
● Public Ledgers.
● Verification of Every Individual Transaction.
● Low or No Transaction Fees

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Types of Blockchain
● The data is contain in chain of blocks which contain information.
The data which is stored inside a block depends on the type of
blockchain.
Three types of Blockchain are :
● Public Blockchain
● Private Blockchain
● Consortium or Federated Blockchain

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Blockchain Use Cases
Blockchain Technology is used widely in the different sectors as given in the following table.
Sector Usage
Market
• Billing, monitoring and Data Transfer
• Quota management in the Supply Chain Network
Government
• Voting, propositions P2P bond,
• Digitization of documents/ contracts and proof of ownership for transfers
• Registry & Identify
IOT
• Smart home networks
• Integrated smartcity.
Health • Organ Donation Database
Finance • Digital Currency Payment
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Cryptocurrency
A cryptocurrency is a digital or virtual currency that uses cryptography for
security.
Uses of Cryptocurrency :
● Going green.
● Travel (ex cheapair.com).
● Education.
● Fund-raising.
● Food & Beverages (ex starbucks)
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Top Cryptocurrency in the Market
Currency Market Cap Current Price
Bitcoin $111,308,641,196 Rs 4,69,202.00
Ethereum $50,162,207,298 Rs 36,599.00
Ripple $20,702,212,180 Rs 30.25
Zilliqa $648,341,173 Rs 6.20
Zebi $25,583,894 Rs 2.95
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Issues Related to Cryptocurrency
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Issues Related to Cryptocurrency
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● Lack of regulation creates a risky environment.
● Government Intervention.
● Pump and Dump ICO Schemes.
● The Activities of Cybercriminals.

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What Effects Crypto Price ?
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Factors to consider while buying
Cryptocurrency ?
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Cryptocurrency Exchanges in India ?
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● Coindelta.
● Koinex.
● BtcxIndia.

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Decentralization App
• DApp has its backend code running on a decentralized
peer-to-peer network.
• The Ethereum white paper splits dapps into three types:
1. Apps that manage money.
2. Apps where money is involved .
3. Apps in the "other" category, which includes voting and
governance systems.

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Types of Ethereum Network
• Ethereum Main
• Ropsten
• Kovan
• Rinkeby

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Transaction on Ethereum Network
• Nounce –How many times sender sent a transaction .
• To – Account to which money is going.
• Gas price – Amount of gas a transaction is consumed.
• Value –Amount of Ether is sent to the target address.

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Transaction on Ethereum Network
Gas price ?

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51 % Attack
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Company 1 Company 2 Company 3 Company 4
XYZ COIN

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Solidity/Smart Contract in Ethereum
• Extension is .sol.
• Strongly Typed.
• Similar to Java Script.
• Bigger the contract bigger the Gas Amount.

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Access Specifiers in Solidity
• Private – Only the current contract can call a function.
• View – Only for viewing the function cannot modify it.
• Pure – Will not modify or read the contract data.
• Payable – Only call to transfer Ether.

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Tools for Dapp Development
• Web3 Library
• MetaMask
• Demo Account
• Editor – Visual Studio Code,etc

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Demonstration

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