1. What is Block Chain 2. How Does it Work 3. What are the key attributes of Blockchain 4. What are applications areas for Block Chain 5. What are the advantages and Disadvantages of Block Chain

1. What is Block Chain
Simplified Explanation

2. Current Business Transaction Process
• In This transaction, banks keeps a
entry on register of transactions.
• The entry needs to be updated on
both, receiver and sender, account.
• It is Tamper-able. Entries of
transactions can be manipulated
easily or change
IT CAN BE HACKED AND ALWAYS KEPT SECRET

3. What is Block Chain
• Block Chain works with Blocks. It is chain of Blocks.
• A block is a collection of data.
• The data is added to the block in block chain, by connecting it with other blocks in
sequence; making a chain.
• The first block in the Block Chain is called Genesis Block.
• Block Chain is a distributed ledger, where every peer holds a copy.

4. A B B C CD DE
How Does it Work : Selling Property

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7. Key Attributes of
Block Chain

8. Peer-To-Peer
• No central authority to control or manipulate it.
• All participant talks to each other directly.
• This allows for data exchange to be made directly without third-parties
involvement.
Distributed
• The ledger is spread across the whole network which makes tampering
impossible.
Cryptographically Secured
• Cryptography is used for the security
• It makes the ledger tamper-proof .
Key Attribute

9. Add-Only
• Data can only be added in the block Chain in sequential order.
• Once data is added, it is almost impossible to change
Consensus
• Ledger updated via consensus and this is the power of decentralization.
• No central authority is in control of updating the ledger.
• It is validated against strict criteria defined by the Block Chain protocol.
• Only after a consensus by all required peers; it is added in record.
Key Attribute

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11. How
Block Chain Works

12. A B B C CD DE
How Does it Work : Selling Property

14. • A node starts a transaction by first creating and then digitally signing it with its private key.
• A transaction can represent various actions in a block chain.
• Most commonly it represents transfer of value between users on the block chain network.
• Transaction data structure usually consists of some logic for validation.
• A transaction is propagated by using a flooding protocol, called Gossip protocol, to peers.
• Peers validate the transaction based on pre-set criteria.
• Usually, more than one node are required to verify the transaction.
• Once the transaction is validated, it is included in a block.

15. • Then it is propagated into Block Chain network.
• The transaction is considered confirmed.
• The newly-created block now becomes part of the ledger and chain.
• The next block links itself cryptographically back to this block using hash pointer.
• At this stage, the transaction gets its second confirmation and the block gets its first
confirmation.
• Transactions are then reconfirmed every time a new block is created.
• Usually, six confirmations in the a network are required to consider the transaction final.

16. Security

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18. Advantages and
Disadvantages of
Block Chain

19. • Process Integrity
• Easy Traceability
• Security
• Faster Processing
• Distributed
• Open to Public
Advantages
• Cost
• Energy
Consumption
• Regulatory Issues
• Education Level of
Masses
• Infrastructure
Preparedness
Disadvantages

20. Application of
Block Chain

21. Smart Contracts Digital Currency
Securities Record Keeping
Application of
Block Chain

23. • Asset Management: Trade Processing and Settlement
• Insurance: Claims processing
• Payments: Cross-Border Payments
• Unconventional money lenders/ hard money lending
• Your car/ smartphone
• Blockchain Internet-of-Things (IoT)
• Smart Appliances
• Supply Chain Sensors
RUNNING APPLICATIONS

24. • Blockchain Healthcare
• Blockchain music
• Blockchain Government
• Public value/ community
• Vested responsibility
• Blockchain Identity
• Passports
• Birth, wedding, and death certificates
• Personal Identification
RUNNING APPLICATIONS

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