What is Blockchain?

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Blockchain
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What is Blockchain?

• Blockchain is a distributed, decentralized,
  public ledger.
• Blockchain is a chain of blocks where blocks are
  digital information stored in a public
  database(the chain)

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How Does Blockchain Work?

• In order for a block to be added to blockchain,
  four things must happen
• A transaction must occur.
• That transaction must be verified.
• Transaction must be stored in a block.
• Block must be given a hash(unique, identifying
  code)
• Once hashed, the block can be added to the
  blockchain.

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Is
Blockchain
Secure?
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• Yes, Blockchain is secure
• Prevents unauthorized access, use, disclosure,
  disruption, modification, inspection, recording
  or destruction of information.

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Advantages of Blockchain

• Accuracy
• Cost
• Decentralization
• Efficiency
• Privacy
• Security

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How can Blockchains be used in Real World?

• Banks
• Crypto Currency
• Healthcare
• Property Records
• Smart Contracts
• Supply Chains 
• Voting 

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