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Block chain

发表时间:2019-03-18 21:44:52  来源:KvioFinance  浏览:次   【】【】【


Block chain

  1. 1. BLOCK CHAIN - Saranya Krishnan 7/10/2018 1
  2. 2. Block chain -DatabaseDefinition a digital ledger in which transactions made in bitcoin or another cryptocurrency are recorded chronologically and publicly. A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography .Each block contains typically a hash pointer as a link to a previous block, a timestamp and transaction data. The first distributed blockchain7/10/2018 2
  3. 3. Block chain - database  A blockchain database consists of two kinds of records: transactions and blocks.  Blocks hold batches of valid transactions that are hashed and encoded into a Merkle tree.  Each block includes the hash of the prior block in the blockchain, linking the two. Merkle tree is a tree in which every non-leaf node is labelled with the hash of the labels or values (in case of leaves) of its child nodes. 7/10/2018 3
  4. 4. 7/10/2018 4
  5. 5. Blockchain  A transaction is a transfer of value between Bitcoin wallets that gets included in the block chain. Bitcoin wallets keep a secret piece of data called a private key or seed, which is used to sign transactions, providing a mathematical proof that they have come from the owner of the wallet.  Bitcoin -first digital currency solved double spending problem ,without the use of central server.  Double Spending problem - Digital currency can be spent twice .  Miners bring new Bitcoins into the world via a complex mathematical and computing process. So far 12 million Bitcoins have been mined. By 2140 there will be 21 million Bitcoin at which point creating more will become impossible. 7/10/2018 5
  6. 6. Block Chain -Process 7/10/2018 6
  7. 7. Language-Bitcoin  Bitcoin Core, is written primarily in C++, with various resource files and scripts in other languages. There are lightweight clients like MultiBit and Bitcoin Wallet (Android), is bitcoinj. It is written in Java. 7/10/2018 7
  8. 8. Bit Coin 1. 1 Bitcoin equals 2,21,376.58 Indian Rupee 2. 1 BTC = 3489.48 USD 3. 3600 bitcoins mined each day. 4. Only 36 % bitcoins are active in market 5. Vancouver - boasted the world's first bitcoin cash machine Facts Denomination Subunit  10^-3 millibitcoin  10^−6 microbitcoin, bit  10^−8 satoshi  Symbol BTC, XBT  millibitcoin mBTC  microbitcoin, bit μBTC 7/10/2018 8
  9. 9. Benefits of Blockchain 7/10/2018 9
  10. 10. Block chain -DisadvantageA bitcoin transfer is irreversible If you could attack or damage the blockchain creation tools on a private corporate server, you could effectively control 100 percent of their network and alter transactions however you wished. Bitcoin has gained the attention of the mainstream media; one way is the WannaCry ransomware created in May 2017. Bitcoins hinges on the ability to use them to purchase illegal goods. National digital currencies7/10/2018 10
  11. 11. Infographics Explaining How Blockchain Can Change Healthcare  http://www.ancapetre.com/5-infographics-explaining-how-blockchain-can- change-healthcare 7/10/2018 11
  12. 12. Block Chain - Health Care 7/10/2018 12
  13. 13. Reference links  http://davidederosa.com/basic-blockchain-programming/  https://www.pinterest.com/pin/191754896611861318/  https://www.pinterest.com/pin/717761259333241384/  https://www.intelligenthq.com/innovation-management/blockchain-5-key- concepts/  https://in.pinterest.com/pin/469007748667591817/.  http://www.ancapetre.com/5-infographics-explaining-how-blockchain-can- change-healthcare  https://99bitcoins.com/50-insane-facts-about-bitcoin-infographic/ 7/10/2018 13

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责任编辑:Saranya Krishnan