Point to point communication of blockchain

1. 1. What is the technology of blockchain?

2. "A network-based computer processing technology, corresponding to centralized. As the performance of personal computer has been greatly improved and the popularity of its use, it is possible to distribute the processing power to all computers on the network. Distributed computing is a concept opposite to centralized computing. The data of distributed computing can be distributed in a large area

3. Peer to peer payment is the application of blockchain technology, which does not need a third-party payment platform. Changsha Information Instry Park has built a SMIC blockchain service platform project, which is for enterprises to collect on the chain, to build a blockchain instry alliance.

4. Blockchain originated from Nakamoto's bitcoin. As the underlying technology of bitcoin, it is essentially a decentralized database. It refers to the technical solution of collective maintenance of a reliable database through centralization and distrust in the past
blockchain technology is a technology solution that does not rely on a third party and stores, verifies, transmits and communicates network data through its own distributed nodes. Therefore, from the perspective of financial accounting, some people regard the blockchain technology as a distributed, open and decentralized large-scale network bookkeeping book. Anyone can use the same technical standards to add their own information at any time, extend the blockchain, and continuously meet the data entry needs brought by various needs
generally speaking, blockchain technology refers to a way for the whole people to participate in bookkeeping. There is a database behind all the systems. You can think of the database as a big ledger. So it's very important who keeps this account book. At present, whose system will keep accounts, wechat's account book is Tencent's account book, and Taobao's account book is Ali's account book. But now in the blockchain system, everyone in the system can have the opportunity to participate in bookkeeping. If there is any data change in a certain period of time, everyone in the system can conct bookkeeping. The system will judge the person who has the fastest and best bookkeeping in this period, write the content of his records into the account book, and send the content of the account book to all other people in the system for backup. In this way, everyone in the system has a complete account book. This way, we call it blockchain technology
blockchain technology is considered to be the most disruptive technological innovation since the invention of the Internet. Relying on the ingenious distributed algorithm of cryptography and mathematics, it can make the participants reach a consensus without the intervention of any third party center on the Internet where the trust relationship cannot be established, and solve the problem of reliable transmission of trust and value at a very low cost
bitcoin peer-to-peer network stores all transaction history in "blockchain". The blockchain continues to extend, and once new blocks are added to the blockchain, they will not be removed. Blockchain is actually a distributed database composed of a group of scattered client nodes and all participants, which is a record of all bitcoin transaction history. After bitcoin transaction data is packaged into a "data block" or "block", the transaction is initially confirmed. When a block is linked to a previous block, the transaction is further confirmed. After six block confirmations in a row, the transaction was irreversibly confirmed
blockchain is public on the network and can be queried in every offline bitcoin wallet data. The lightweight bitcoin wallet uses online confirmation, that is, it will not download the blockchain data to the device storage
digital currency is easy to be regarded as a new currency by traditional financial institutions, but in fact, the significance and value of its underlying technology is far greater than its monetary attribute. Taking bitcoin as an example, it is generally regarded as a kind of point-to-point digital currency, but from the technical level, it is actually a point-to-point decentralized network platform, which relies on the blockchain technology. Digital currency is a global peer-to-peer network platform based on blockchain technology. Represented by bitcoin, the application of blockchain in the field of digital currency is also known as blockchain 1.0 [1].

5. At present, some enterprises are also developing the application of blockchain technology. Heshu software is one of them, which has developed the point-to-point trading system and super ledger.

6. Before we mentioned the decentralized application platform, we always thought of foreign procts, such as Ethereum. But when we talk about this topic today, I will think of China's own Asch, a new generation of decentralized application development platform based on side chain technology. Arch is a decentralized application development platform, and it is also the first decentralized application platform in China. Its purpose is to help developers quickly create decentralized applications. The platform is easy to use, flexible and safe. In terms of mode, it is similar to Ethereum and belongs to blockchain service, but the implementation mechanism is quite different. Taking Ethereum as an example, its biggest feature is that it greatly expands the functions of the script engine, adds new instructions such as reading blockchain, charging and jumping, and relieves stack memory, function call depth and script length restrictions. However, this method has a big disadvantage that the application code itself and the data generated by the application exist in the same blockchain, resulting in the rapid expansion of the blockchain. But ash is different. Its scalability is not realized by transaction script, but by side chain. There is a main chain and several side chains (mainly provided by developers) in the ash system, but each chain only supports a limited number of transaction types. The logic of transaction or contract is written directly by the host language, not by the transaction script. This has the advantages of recing the difficulty of contract programming, avoiding the expansion of blockchain, and customized blockchain parameters for each application. Asch doesn't directly replicate crypti (decentralized, blockchain based app store) or lisk (it's a new generation platform that allows JavaScript development and distributed applications to use an easy-to-use, fully functional ecosystem), But it will refer to crypti's architecture and reuse some of its code, but not too much. Crypti uses dpos, and we add pbft to it to enhance consistency and rece double payment risk. We use C + + language to write some key moles, and nodejs is still used to write the non performance hot parts.

7. Bitbox thinks that the biggest difference is that compared with the traditional IOT central server architecture, the computing resource investment in a small number of verification nodes will be far less than the cost of the original service cluster.

8. Blockchain itself is a tool called decentralization and distrust. For example, when you graate from University, the current practice is to have a certificate recognized and issued by an authoritative authority as a certificate
this setting is troublesome, because it is a piece of paper, which can be forged, and there will be various gaps. The issuing authority is also a person, and there will be various gaps in the middle. As long as it is related to people, there will be various possibilities related to which media
blockchain provides a good opportunity. As soon as you graate, you can generate a record on the blockchain. No one can change this record. This thing exists objectively. As a physical existence, and then as a data existence, blockchain will be generated
in this way, it is easy for anyone who wants to find out where he graated from
this is similar to the big data often used in social networking (WeChat) and payment platforms (Alipay, Yi Bao).

9. Peer to peer technology is actually a kind of P2P, also known as peer-to-peer Internet technology, is a new network technology. It is also closely related to the blockchain. If you want to understand it more clearly, you can go to the community app of lianpai to take a look at their courses. After watching, you will have a deeper understanding of the blockchain.

10. Blockchain technology is considered as the technical foundation of digital virtual currency. The so-called blockchain technology, also known as distributed ledger technology, is an Internet database technology, which is characterized by decentralization, openness and transparency, so that everyone can participate in database records
generally speaking, if we assume that the database is an account book, reading and writing the database can be regarded as a kind of bookkeeping behavior. The principle of blockchain technology is to find a person who can keep accounts fast and well within a period of time, and then send this page of information of the account book to everyone else in the whole system. This is equivalent to changing all records in the database and sending them to every other node in the whole network, so blockchain technology is also called distributed ledger. As for the point-to-point trading system, the better thing is that the block chain point-to-point OTC trading platform developed by Yingtang Zhongchuang mainly has three forms, namely online P2P trading, online B2C trading and offline trading.