introduction In the previous article, we have introduced the concept of decentralization and the decentralized currency: Bitcoin. If you still don't understand what is a decentralized partner, please follow my headlines and browse through historical articles. P2P network First knowledge blockchain: an understanding blockchain P2P network diagram Our current Internet is made up of computers connected to each other, but in order to obtain resources, we generally need to access the server, and the P2P network is like the above picture, which is connected by each node. . Therefore, the status of each node seems to be equal, so the P2P network is also called the peer-to-peer network. P2P network advantages In a P2P network, resources are stored in each node. For example, a xx.avi video is saved and saved on all computers. The advantage of this is that when a computer dies, it can be downloaded from another computer unless all computers are dead. Network access download speed is high. When you need xx.avi video, just download it from your neighbors and the speed is greatly increased. No need for a centralized node P2P network disadvantages Redundancy is too big: one xx.avi needs to be saved by all nodes, which is a waste of resources. Because it is not centralized, it cannot be managed effectively. Consensus mechanism With the features of a P2P network, it is safe to store the same data on a P2P network. For example, save such a piece of data in a P2P network: Xiao Ming has a deposit of 2,000 yuan. We stipulate that if more than half of the nodes have saved this data, then we think that Xiao Ming really has a deposit of 2,000 yuan, otherwise there will be no. Therefore, if Xiao Ming wants to modify his balance, he must at least modify more than half of the nodes to achieve the effect. Imagine that if the network is spread all over the world, he will not be able to do so. The idea that "most nodes agree" is the consensus mechanism. Of course, there are many kinds of consensus mechanisms, which are not covered here. data encryption Now, we can use the P2P network to save a trusted data through the consensus mechanism, but the data is transparent, that is, anyone can know that Xiao Ming has a deposit of 2,000 yuan. What if I want to protect my privacy? Xiao Ming can encrypt his or her own information with a password and store it on a P2P network. Blockchain Is the blockchain a barking blockchain? Because the block is the place where the Xiaoming deposit information we mentioned above is placed, called the block, a lot of data can be placed in one block, such as the deposit of Xiaohong and the deposit of the piglet. You can also place a person's identity information and more. The blocks that are agreed by the people will eventually be connected into a long chain, so this chain is called the blockchain. Blockchain characteristics Decentralization: From the above we know that there is no central node to manage data, and data is placed in all nodes. Data security: As long as more than half of the nodes are honest, the data must be secure and complete. Permanent storage of data: Because of the security of the data, once it is placed in the blockchain, it is stored permanently. Blockchain application So why is the blockchain so hot, because the blockchain is particularly secure, you can safely put important data in the blockchain, such as money, personal information, and this information will not be tampered with or Lost. Even the government can't intervene. The current popular applications in the blockchain are as follows: Digital currency (digital property stored in blockchain) Authentication Property registration Medical Internet of Things (data in the blockchain, hackers can not tamper with, to ensure the security of the Internet of Things) Next generation internet Now, the era of information exchange on the Internet has come to an end, and the value exchange is followed. The guarantee of value exchange is security. Therefore, blockchain technology provides security for the exchange of Internet values. This is why the blockchain is so hot. s reason. Welcome your comments and attention, we will be more progressive!
Located In the northwest of
China, Xibei Bearing Co., Ltd. orientate to equip toChinaand service to the world. During
the course of development, Xibei Bearing Co., Ltd. continuously accumulates
experience, pioneering and innovative, forge ahead with determination. In accordance
with the international standard and customer`s special requirement, Xibei
Bearing can produce more than 6000 varieties of bearing standard and
non-standard with outside diameter from40mmto3500mm. Its products are widely used in rail transit,
military industry, precision motor, petroleum machinery, metallurgy machinery,
heavy truck, construction machinery, mining machinery, cement machinery and hydraulic
engineering, etc. Its products are well sold all overChinaand export to over 50 countries and
regions, such as Europe,America,
Asia,Africa, etc.
Petroleum Machinery Bearing Mud Pump Bearing,Swivel Bearing,Rotary Table Bearing,Hook Bearing Xibei Bearing Co.,Ltd. , https://www.nxzjck.com