Blockchain first message

1.

blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects

on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention

extended data:

related extension: blockchain financial application:

since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency

standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency

in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016

the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology

on June 1, 2020, Xinhua news agency was authorized to broadcast the "overall plan for the construction of Hainan free trade port" issued by the CPC Central Committee and the State Council, which will "actively participate in the formulation of international rules for cross-border data flow, and establish standards and rules for data rights confirmation, data trading, data security and blockchain finance" as one of the key tasks of Hainan free trade port before 2035

2. I also use fire chain finance. Now I join fire chain finance group. You can discuss it at any time.

3. Coin news network news is the latest, every day there will be a lot of news update there

4. There is no "Folk Culture Village" station in Shenzhen bus. It is called "He Xiangning Art Museum". The next station is "Splendid China". Huaxia Art Center is on the opposite side of the road in the middle of the two stations, and the exit of subway OCT station

after entering Nantou checkpoint, there is a big bus station. Take bus No.301, 323, 327, 311, 319, 367 there. Just take 5 or 6 stops to get off at He Xiangning Art Museum and walk forward, or get off at Jinxiu Zhonghua station and turn around. The subway station serves as a Cross Street tunnel. Just cross Shennan Avenue from the subway station to the opposite side.

5. The data that you play chess is not sent to the server. The server still counts your time. Your software shows that you have played chess, so it shows the time of your opponent..

6. In theory, blockchain technology can ensure the authenticity of the original information. One of the biggest characteristics of blockchain is decentralization. The information recorded on the blockchain can not be tampered with and will be forever recorded on the blockchain
so far, no research institution or indivial claims that it can change the tamper proof characteristics of blockchain
decent, a distributed content publishing platform, uses this feature of blockchain to protect users' property rights.

7. Block head, transaction details, transaction counter and block size... Are these Shenma things
blockchain is the big ledger of bitcoin network, and each block is equivalent to a page in the ledger. What information is recorded in the "account book"? At present, each block of bitcoin mainly records data such as block head, transaction details, transaction counter and block size
"block header" contains all information except transaction information, mainly including the hash value of the previous block header, which is used to ensure that blocks are connected in sequence; Time stamp: record the generation time of the block; Random number: that is, the answer to the arithmetic problem of PK for all miners in the whole network; Difficulty target: score the difficulty coefficient of the arithmetic problem
"transaction details" records in detail the transferor, income party, amount and digital signature of the transferor of each transaction, which is the main content of each block
"transaction counter" describes the number of transactions contained in each block
"block size" refers to the size of each block data. Currently, each block is limited to 1MB, which does not rule out the possibility of expansion in the future.

8. Blockchain is on fire these days, and more and more people are interested in blockchain. But blockchain is really hard for people who have never heard of it
I believe most people have heard of cryptocurrency bitcoin. Blockchain is the underlying technology of bitcoin. It is a chained data structure composed of data blocks connected in sequence according to the time sequence, and it is a distributed account book that can not be tampered with and forged by cryptography
there are a lot of blockchain landing applications, and those who are interested can have a look. Cryptography focuses on blockchain messages.