Is blockchain a branch of bitcoin
blockchain technology is a new technology derived from the development of bitcoin economy, blockchain technology can effectively serve the bitcoin economy , they are interrelated. Bitcoin is a kind of virtual currency, which only circulates in a specific network economic environment, blockchain technology can not only be applied to the economy, but also can be used in all walks of life , which is their difference
Blockchain technologybecause blockchain technology is still a new proct at present, it has no accurate or definite definition and concept. In short, blockchain technology is a mode of data encryption management, which can protect data to a great extent. Blockchain technology is characterized by decentralization, openness, independence, security and anonymity. Its characteristics well adapt to the requirements of information protection and information disclosure in all walks of life. On the one hand, it ensures the security of data and avoids the interference of subjective emotions and system failures. On the other hand, data indivials can decide whether to hide their detailed information in the group to the greatest extent, so as to achieve the purpose of privacy protection
At the same time, there is no doubt that the blockchain technology is still in the state of preliminary development. The social understanding of it is not deep enough, and scholars are still in the stage of continuous exploration. Through the correct use, blockchain technology will bring many positive effects to the societyand then apply for Yudian terminal security system
and then use the Tencent Yudian to kill the virus
connect the device to the computer with USB cable, and then you will hear the prompt sound that the computer has been connected successfully
please turn off the device first, and then you will hear the prompt that the computer is not connected successfully
first press and hold the power key to display the apple logo, and then press and hold the on / off key and the home key until the logo disappears. Continue to press and hold the power key for about 4-5 seconds, and continue to press and hold the home key until an iPhone in recovery mode is detected by iTunes (if successful, the iPhone should be in black screen). If redsn0w is used to detect, the device model in DFU will be displayed at the bottom of the interface< Method 2: enter DFU in any state (white apple or unlimited restart)
connect the device to the computer
Press and hold the on / off key and home key directly until the logo disappears. Just follow the above steps
method 3: do not press the key to enter the DFU (it is recommended to use the device with damaged key)
download the firmware of the device corresponding to the latest system version (do not use the firmware that Apple has closed for verification)
Download redsn0w and enter extra even more DFU IPSW in turn
at this time, redsn0w will prompt you that this is the operation of making DFU firmware, not the normal operation of restoring the system. The choice is
after selecting the latest official firmware, redsn0w will start making DFU firmware and wait for completion
Open iTunes, close redsn0w, shift + restore (for Mac, please use option + restore) and select the DFU firmware (prefixed with enter)_ DFU), wait for error 37 in the recovery process. At this time, the device is already in DFU mode.
Please refer to the article I wrote myself
tell you what blockchain is in three minutes
blockchain allows full name to participate in bookkeeping, which makes full name bookkeeping more stable. Since there is no specific bookkeeper in the system, any node in the system will not be affected if it is lost or destroyed Have you ever come across an error code 404 on a webpage?) Full name bookkeeping is safer! The system stipulates that the same number of accounting books with the largest number are true accounting books, and a small number of accounting books that are inconsistent with other accounting books are false accounting books, which makes it difficult for blockchain with enough nodes to be attacked or tampered with. These nodes are distributed in any corner of the Internet, and cannot be tampered with unless you are God and can control most computers in the world. Therefore, blockchain is considered to be the most secure way of data management in history. Full name bookkeeping is more efficient. Because there is no centralized intermediary, automatic operation through pre-set proceres can greatly rece costs and improve efficiency, and ensure that the process and content of accounting records are open and transparent
bitcoin is just an experimental application of blockchain technology in the field of payment. Blockchain can also be used in broader fields, such as medical treatment, Internet of things, security authentication, social networking and artificial intelligence
The Economist calls blockchain a "trust machine" and believes that it will have a huge and far-reaching impact on global finance and even social structure. To sum up in one sentence, block technology is a way that all participants in the system can cooperate to record logs through cryptography without mutual trust
this is blockchain
blockchain is the underlying technology of bitcoin, which is based on the cryptocurrency issued by blockchain. But more people may know bitcoin first, so they will mistakenly think that the two are the same thing
bitcoin is one of the cryptocurrencies. It is created by an indivial or a group named Nakamoto and generated by a lot of computing. The blockchain is a decentralized distributed ledger. When cryptocurrency is traded on the blockchain, it will record one block after another. These transaction records cannot be tampered with, and all contents can be traced back
the two are different. If you want to learn more about blockchain, you can read more relevant news.
2. The transaction information of bitcoin is recorded in a decentralized ledger, which is called blockchain
3. According to the principle of cryptography, each block is connected in chronological order to form a chain structure, so it is named blockchain.