The invention of blockchain

1. Block chain 3 architecture block chain 3 is mainly used in the field of social governance, including identity authentication, notarization, arbitration, auditing, domain name, logistics, Internet of things medical guards. For example, today's latest news, Ma Huateng pointed out at the 2018 China Internet plus digital economic summit held today, Tencent will use the block chain technology to cooperate with hospitals to prescribe digital prescriptions. In addition, wechat is also launching innovative medical services such as digital medical insurance card in many places.

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3. Alibaba
IPR daily, an intellectual property media, recently released a report, which listed the number of blockchain invention patents published in the world from January 1, 2019 to June 30, 2019, among which China ranked first, accounting for 67% of patent applications. Alibaba ranked first with 322 patents, followed by Ping An of China, with 274 patents, Third, nchain has 241 patents.

4. The development of blockchain can be divided into three stages. Melanie Swann, founder of blockchain Science Research Institute, in her book blockchain: blueprint and guide to new economy, according to the application and development of blockchain, it can be divided into three stages: blockchain 1.0, 2.0 and 3.0< br /> 
I. blockchain 1.0 cryptocurrency era (2008-2013)
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in 2008, Nakamoto first proposed the concepts of bitcoin and blockchain, and then in January 2009, the first blockchain came out. At this stage, people pay more attention to the transaction of cryptocurrency, and blockchain is only used as the underlying technology to act as a "public account book"< br /> 
2. Blockchain 2.0 smart contract era (2014-2017)
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in 2014, & quot; Blockchain 2.0 "has become the pronoun of decentralized blockchain database. At this stage, people mainly focus on the application of the platform. Anyone can upload and execute the smart contract on the blockchain, and will be rewarded automatically after the execution. Because this transaction process does not need any intermediary, so people's privacy has been greatly protected< br /> 
III. blockchain 3.0 large scale application era (2018 -)
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at this stage, people begin to build a completely decentralized data network, and the application of blockchain technology is no longer limited to the economic field, but expanded to the fields of art, law, real estate, hospital, human resources and so on.

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