Blockchain is a decentralized ledger of transactions across a peer-to-peer network that allows participants to perform transactions without a central authority. It provides transparency, reduced costs, faster transaction settlements, and decentralization. The first blockchain application was Bitcoin, a digital currency that ensures secure "cash-like" coin passing in an immutable and final manner. Potential applications of blockchain include money transfers, smart contracts, electronic voting, and paying employees.

1. Blockchain
By Shubhrajyoti Poddar
Roll: 13000219013

2. What is BLOCKCHAIN TECHNOLOGY?
 Blockchain is a decentralized ledger of all transactions across a peer-to-peer network.
 Using this technology , participants can perform transactions without the need for a central
certifying authority.
 Potential applications include fund transfers , settling trades , voting and many others.
 Business Networks benefit from connectivity – Connected customers, suppliers, banks, partners.

3. How Transactions are done?

4. Application: BITCOIN
 It is unregulated, censorship-resistant shadow currency.
 Blockchain ensures “cash like” coin passing
 Unique
 Immutable
 Final
 Bitcoin is the first Blockchain application.
 Digital currencies different from cryptocurrency.

5. Advantages:
 Transparency:
 Users or developers have the opportunity to modify it as they see fit. This makes blockchain a
particularly secure technology.
 Reduced transaction costs:
 Blockchain allows peer-to-peer and business-to- business transactions to be completed without
the need for a third party. it means they can actually reduce costs to the user or businesses over
time.
 Faster transaction settlements:
 Blockchain technology is working 24 hours a day, seven days a week, meaning blockchain-based
transactions process considerably more quickly.
 Decentralization:
 Blockchain actually allows individual transactions to have their own proof of validity and the
authorization to enforce those constraints.

6. Applications
 Money Transfer:By eliminating bureaucratic red tape, making ledger systems real-time and
reducing third-party fees, BLOCKCHAIN can save lots of money. These companies use blockchain
to efficiently transfer money.
 Smart Contracts: Theyare like regular contracts except the rules of the contract are enforced in real-
time on a blockchain, which eliminates the middleman and adds levels of accountability for all
parties involved in a way not possible with traditional agreements
 Electronic Voting: Delegated Proof of Stake (DPOS) is the fastest, most efficient, most
decentralized, and most flexible consensus model available.
 Paying Employees: Payments made via Bitcoin can save both money and time for
employers and employees.

7. THANK YOU.
References:
https://builtin.com/, https://www.weforum.org/, https://www.youtube.com/