The understanding of "blockchain" and the application of "blockchain"

"Blockchain" can be said to be the hottest keyword now, whether it is network information , or just chatting in daily life, I heard about it everywhere. Although there is a lot of discussion, most people are still relatively ignorant about "blockchain". Therefore, we often hear many people ask "What is blockchain technology?" "What is the relationship between digital currency and blockchain?" "How can we identify a good blockchain project?" and other related questions.

As for what exactly is blockchain?

Blockchain technology refers to a way for all people to participate in accounting. There is a database behind all systems. You can think of the database as a big ledger. Currently, each system keeps its own account.

But now in the blockchain system, everyone can keep accounts, and the system will automatically select the person with the best and fastest accounting, write the contents of his accounting into the ledger, and record this. The contents in the ledger are sent to everyone in the system for backup.

So what are the benefits of universal accounting?

First of all, the biggest benefit is security. With this central ledger, others cannot change or destroy it. Because it is not controlled by a computer, it can not only greatly reduce costs, but also improve efficiency. And since everyone has the same ledger, it can ensure that the ledger recording process is open and transparent.

Secondly, the most important thing about blockchain technology is that it can solve the problem of intermediary credit. In the past, it was difficult for two people who did not trust each other to cooperate and had to rely on a third party, just like transfers had to go through a bank. , but through blockchain technology, Bitcoin has realized the transfer behavior that both parties can trust each other for the first time without the participation of any intermediary agency;

Because the blockchain does not require the participation of intermediaries and the process is efficient It is transparent and low-cost, and the data is highly secure. Therefore, any industry or field that has needs in any of these three aspects will have the opportunity to use blockchain technology.

If you still say that "blockchain" can only be used for currency speculation, then you are too behind:

With the improvement of living standards and the upgrading of the consumption era, many people use it when traveling abroad. Even people who don’t go abroad like to buy some imported goods online. As a result, cross-border online shopping has risen rapidly in recent years. However, many of the processes and links of cross-border online shopping are abroad. As a cross-border online shopping user, how can you ensure that the goods you buy are not A goods or counterfeit goods?

In order to solve the problem of allowing consumers to buy The products you like are both genuine and licensed. Now we have a reliable and convenient solution, which is blockchain technology. It has the following characteristics:

1. Utilize blockchain data Structure to verify and store data

2. Use distributed node identification algorithm to generate and update data

3. Use cryptography to ensure the security of data transmission and access

4. Use smart contracts composed of automated script codes to program and manipulate data

Nowadays, many e-commerce companies have taken a fancy to these advantages of blockchain technology and use it for Overseas purchasing business, such as JD.com. It is understood that JD.com has now reached cooperation with brands such as Kelaisi Mask, Cheonggwanjang Korean Ginseng and Red Ginseng, Amore Cosmetics, Oberton Apricot Dried Raisin Fruit Oatmeal and other brands. With the help of blockchain technology, the products of these brands Information on the raw material process, production process, circulation process, and marketing process is integrated and written into the blockchain to achieve full-process authenticity traceability down to one item and one code.

As a result, each piece of information has its own unique blockchain ID "identity card", and each piece of information is accompanied by the digital signature and timestamp of each subject for consumers to query and verify. . The data signature and encryption technology of blockchain enables full-link information to achieve tamper-proof, unified standards and efficient exchange.

Now that we have reliable technology like blockchain, and reliable cross-border traceability and cross-border logistics, we no longer need to go abroad to buy goods in person, nor do we need to worry about what we are buying online. The products purchased on the merchant platform are not genuine. As long as we sit at home and move the mouse, our favorite overseas big-name products will arrive as scheduled. I believe that in the near future, blockchain technology will also be applied to other e-commerce companies.