Is blockchain related to Pei Lei
Blockchain technology has been popular since its birth. For the general public, it seems to be very close to us, but we don't know what it (blockchain) is; In fact, the blockchain instry, which is still in the early stage of development, is in chaos both from the technical level and from the content level
What is blockchainblockchain is a technical solution to maintain a reliable database collectively through centralization and distrust. In short, blockchain technology is like a nationwide accounting method. There is a database behind all the systems. You can think of the database as a big ledger. When the data changes, everyone in the system can make bookkeeping, and the fastest and best bookkeeping person will be written into the account book and sent to other people to complete the update of the account book. This way, we call it blockchain technology P>
, for example, in the payment behavior, there should be third parties involved in any transfer before, for example, the third party organizations such as banks or Alipay, and the block chain technology can effectively solve the intermediary credit problem, so that two people who are not acquainted with each other can complete the transfer directly without the third party. p>
2. What are the advantages of such a nationwide bookkeeping blockchain
knowing what a blockchain is, it is not difficult for us to find that although the efficiency of blockchain is sacrificed, the security is greatly guaranteed. First, the system can hardly be destroyed; second, the accounting process is open and transparent, and cheating is impossible; Third, the cost is greatly reced, and the efficiency is relatively higher
Is blockchain software? What program is it written inperhaps through the above introction, some people will ask, is blockchain a specific software? Actually, it's not. Blockchain is like a database. It's a design idea of a specific technology. It can be implemented in most languages, and in many ways
having said so much, you should know what blockchain is. In fact, blockchain has little to do with the ordinary people born in the 90s. We just need to enjoy the convenient services brought by the Internet or cloud services, unless you want to take blockchain as a business. At present, blockchain technology is still developing rapidly, and its design idea is relatively simple, Maybe it will become more complicated in the future
bitcoin is regarded as the first generation application of blockchain technology and the most thorough application of its code testing. However, without bitcoin, there might not be so many people who knew about blockchain now. It can be said that bitcoin has greatly improved the "exposure" of blockchain technology
later, people graally found that the application value of blockchain is far more than bitcoin, but can be applied to many instries to solve the pain points of many instries; The idea of blockchain can also provide a lot of reference for the financial field, which is the real reason for the outbreak of blockchain.
blockchain is essentially a distributed ledger database, it is a series of data blocks generated by cryptography Association, and each data block contains effective confirmation information of multiple bitcoin network transactions
Statistics show that in 2017, China's e-invoice circulation reached 1.31 billion, and it is expected to reach 54.55 billion by 2022, maintaining an average annual growth rate of more than 100%. Recently, when talking about blockchain invoice, people's daily stressed that electronic invoice should be added with "lock", and blockchain's open consensus, decentralization, non tampering, distributed consistency and privacy protection are the "lock" of electronic invoicefinally, I repeat my idea: blockchain gives us freedom, and freedom will bring a lot of innovation. Innovation will eventually bring us wealth. I believe blockchain will have a similar development path. The core task of blockchain is to stabilize the value, establish a trust system with almost zero cost, and release the energy of indivials in pursuit of wealth preservation and appreciation
BR0 0 bridge port
eth0 Ethernet interface
VLAN 0 VLAN with number 0
VLAN 1 VLAN with number 1
VLAN is a virtual local area network. A local area network can be divided into multiple isolated network segments, up to 4096, numbered from 0 to 4095, and those with the same number are regarded as the same virtual network.