blockchain 区块链.pptx

Blockchain
by 邓斌斌
What is blockchain?
trade
默克尔树
Each transaction in the set that makes up a block is fed through a program that creates an encrypted code known as the hash value.
Hash values are bined in a system known as a Merkle Tree.
The result of all this hashing goes into the block’s header , along with a hash of the previous block’s header and a time-stamp.
The header then es part of a cryptographic puzzle solved by manipulating a number called the nonce.
Once a solution is found the new block is added to the blockchain.
代码加密
时间戳
加密
Number once
What are the application of blockchain?
Distribution
Shopping
Trust

Transaction
Security
……
分布式账本
添加幻灯片标题- 1
decentralization
去中心化
If you're a hacker
You will
Attack?
BANK
Block chain
A centralized ledger tracks asset movements within the financial system between institution.
A distributed ledger eliminates the need for central authorities to certify asset ownership. Institutions to cut down on fraud and manipulation.
欺诈
Traditional
data globalization
Block chain
Security
Thank you!
Black Technology in American election
毛承蔚
Pay less but gain more??!
300 million>400 million?
Thanks to big data
hiahiahia~~~~~~