Block Chain Technology is the redesigning of the way transactions will be processed. It is tantamount to as paradigm shift the way of doing business.

3. Distributed Ledger System

4. Permanent Record
Tamper Proof

8. Logically
Centralized

9. Block Chain
Technology
Provides
Wallets
Digital
Signatures
Protocol

13. Block chain platforms
permission-less or permissioned
 In a private,
permissioned chain
like Multichip, every
node might be able
to conduct
transactions, but
participation in the
consensus process is
restricted to a
limited number of
approved nodes.
 In a public,
permission less block
chain like Bit coin,
every node in the
network can conduct
transactions and
participate in the
consensus process.

14. Block chain consensus/validation
algorithms Four Algorithms:
Proof-of-
work
algorithm
(Pow)-Most
Favored
Practical
byzantine
fault
tolerance
algorithm
(PBFT)
Proof-of-
stake
algorithm
(PoS)
Delegated
proof-of-
stake
algorithm
(Dopes)

15. Who uses block chain: Current
and Potentials Users
Current: Potentials:
 Bit coin
 In 2016, the online retail company
Overstock.com used block chain to
sell and distributed more than
126,000 company shares, marking
the first time a publicly traded
company used block chain to support
stock transactions.
 R3, a global consortium of financial
institutions, also uses block chain to
record, manage and synchronize
financial information using block
chain APIs for specific platforms.
 Banks and financial institutions across
the globe are exploring how they can
use block chain to improve security.
 Healthcare, government and
technology, are investigating how they
can use block chain to enable secure
exchange of data and real estate
deeds.
 Manufacturing and other similar
businesses also see the potential to
leverage block chain to manage smart
contracts

16. Important Points about BCT:-
1. The Block chain is a database, which is distributed among all nodes.
2. No one or several nodes control the Block chain.
3. All nodes are able to validate a transaction.
4. All communication on the Block chain is p2p.
5. Anyone using a Block chain is anonymous if that is what they wish.
6. All transactions occurring on a Block chain are recorded there, so the
transactions of any person using the network are public and completely
transparent, even though they may be anonymous.
7. Once a transaction is recorded on the Block chain and the Block chain has
updated, then that transaction cannot be altered.
8. No one person or organization can turn off a Block chain.
9. Although a Block chain is politically and architecturally decentralized it is
logically centralized

17. What are smart contracts?
A warranty claim
Derivatives
Insurance claims
Identity verification
The Internet of Things (IoT)
Archiving and file storage
The protection of intellectual property
Crime
Social media
The use of smart contracts in elections and polls

18. Benefits of Block Chain Technology?

19. Limitations of Block Chain
Technology

20. As you can see, block chain technology offers plenty of opportunities for
various applications. And as the technology continues to progress, its
applicability will only continue to broaden.