Password geek blockchain
for blockchain wallets, you can see the evaluation of wallets in password finance if you go to the tutorial.
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
on December 2, 2019, the word was selected into the top ten catchwords of "biting words" in 2019
extended data:
Application of blockchain Finance:
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
bitcoin wallet can be divided into cold wallet and hot wallet according to the storage method of private key
01. A cold wallet is a wallet that can't access your private key on the Internet
cold wallets often rely on "cold" devices to ensure the security of bitcoin's private key, such as computers that are not connected to the Internet, mobile phones, small notebooks with private key addresses, etc. Cold wallet avoids the risk of hackers stealing the private key, but may face physical security risks, such as computer loss and damage
02. Hot wallet refers to the wallet that can access your private key on the Internet
Hot wallets are often in the form of online wallets. When using hot money package, it is better to set different passwords on different platforms and open secondary authentication to ensure the security of your assets
wallet is actually "a management tool for private key, address and blockchain data".
Hard core blockchain concept stocks
since October 28, blockchain concept stocks have performed eye-catching, with trading limit almost every day. According to zinc link, these & quot; Blockchain & quot; The main business of listed companies is not blockchain, and only a few of them have real application, most of them are still in the exploration stage
according to Dongfang fortune choice, on October 28, there were 153 companies in the A-share blockchain concept sector, and as of November 20, the number had increased to 197
through sorting out the public data such as interactive trading platform, announcement and relevant news, zinc link found that only 58 of 197 A-share blockchain listed companies have real business landing, and 37 companies said that they are not involved in any blockchain business at present
details
bus line: No.31 interval → Metro Line 1, the whole journey is about 16.5km
1. Walk about 10m from the first hospital of Zhejiang Medical University to the first hospital of Zhejiang Medical University Station
< P > 2. Take No.31 interval, pass 2 stops, and reach Shengli theater station (or take No.31 working day)3. Walk about 180m to longxiangqiao station
4. Take Metro Line 1, pass 11 stops, Arrive at the passenger transport center station (or take Metro Line 1)
5. Walk about 260 meters to Hangzhou bus passenger transport center station
In my opinion, the introction of blockchain by postal savings bank does not really want to build a decentralized bookkeeping system. The bank is a vested interest in the centralized bookkeeping system, and will not actively accept technologies that may impact its market and business. At most, it will try water. Moreover, the decentralization of blockchain means that it must face the public in order to have vitality and be "tamperable", and the blockchain made by banks will die
Why do you say that? Considering the security and stability of banks, the chains they build are all private chainsblockchain can be divided into three types: common chain, alliance chain and private chain. Literally, according to the degree of openness, bitcoin and Ethereum are common chains. Their mode can best reflect the characteristics of decentralized, open and transparent blockchain, and can not be tampered with. However, geek style is too strong, and they are not suitable for commercial environment in terms of efficiency and sense of use, For example, the transaction confirmation is too slow, the user code is too high, and so on. Of course, we must also admit that the birth of blockchain is e to this group of freedom seeking geeks
private chain refers to the chain established by some large institutions, such as the postal savings bank. It has been commented that there are too few nodes, which do not have credibility and are easy to be attacked by hackers
alliance chain can be said to be a combination of common chain and private chain, or an optimized version. The nodes of alliance chain are selected in advance, and there is usually a good cooperative relationship between nodes. At the same time, it improves the efficiency and ensures the data privacy. At present, this form is most in line with the process of social development. It not only guarantees credibility, but also provides the basis for creating new value. At the same time, it is in line with the current state of technology and public awareness. Although it lacks the absolute openness of the public chain, the blockchain is now like a newborn baby. It can only drink porridge, not meat
of course, these three kinds of blockchains now have their own commercial value and target users, and it will take time to prove who will become the gold left behind in the end