What exactly is a blockchain? Can you make money?

How hot is the blockchain? Even my mother knows this word, and many people around me have consulted this thing.

In fact, what they really want to know is how this thing makes money. After all, all kinds of information on the internet have been overwhelming in recent years about how much bitcoin has risen. To what extent is the blockchain fire burning now? Internet companies in all halls have joined in. As ordinary people, they also want to make several leaps in this "pond".

Go down.

So what exactly is a blockchain?

The White Paper on the Development of Blockchain Technology and Application in China 20 16 issued under the guidance of the Ministry of Industry and Information Technology explains that in a broad sense, blockchain technology is a brand-new distributed infrastructure and computing paradigm, which uses blockchain data structure to verify and store data, uses distributed nodes to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligent contracts composed of automated script codes to program and manipulate data.

Simply put, blockchain is a decentralized distributed ledger database. Decentralization, that is, different from the traditional centralized way, there is no center here, or everyone is the center; Distributed ledger database means that the recording method is not only to store ledger data at each node, but also to copy the data of the whole ledger at the same time. At the same time, the blockchain also has the characteristics of disintermediation and information transparency.

For example. For example, in our usual online shopping, after placing an order, all our money goes to the intermediary platform of a third-party payment institution. After the seller delivers the goods and the buyer confirms the receipt, the buyer informs the payment institution to transfer the money to the seller's account.

However, the transaction mode supported by blockchain technology is different. Buyers and sellers can trade directly without any intermediary platform. After the transaction between the buyer and the seller is completed, the system releases the transaction information in the form of broadcast, and all the hosts that receive the information record the transaction after confirming that the information is correct, that is to say, all the hosts have backed up the data of this transaction. If there is a problem with the order produced by this machine, it will not affect its data information, because there are countless machines backing up data at the same time.

When it comes to blockchain, you have to mention bitcoin, as if you don't put the two together, you think you don't know anything.

In fact, although the blockchain is a blockchain and Bitcoin is Bitcoin, most people who care about it are there.

Not many people care about coins and chains. Even if he says he cares about the chain, it's just a make-do The other party is more concerned about which currency is more profitable. How can I join?

In fact, what I want to say is that you don't have to chase every outlet. If you don't catch up with the stock market, self-media, WeChat business and artificial intelligence, the blockchain will be the same, and new products will soon appear to replace it.

What is the role of blockchain that makes everyone so obsessed? We use the above shopping example to illustrate that the so-called two-party transaction is not without, but it is all two-party transaction. What if one of them doesn't deliver the goods to you after receiving the money, or doesn't receive the money and doesn't recognize the account?

How does the blockchain solve this problem?

It's also a transaction, but during the transaction, everyone knows that the other party gave you money, so you can't deny it. In the final analysis, it is a question of credit value.

Blockchain: What can it bring us? There used to be such a news in the society, how to prove that your mother is your mother. Even if we have an ID card account book, we still need government agencies to authenticate it, which is complicated in practice.

If the district chain is used, credit can be established at low cost through mathematical principles, rather than centralized credit institutions. In this way, our birth certificate, household registration book and real estate license can be verified in the blockchain, and your mother is your mother's problem.

Another example is the food safety problem that has been implemented at present, and the rookie Tmall JD.COM has started to use it. With the help of blockchain technology, all transactions have established a reliable mechanism, so that producers, suppliers, processors, distributors, retailers, regulators and consumers in the food chain can obtain food source and status information at any time, which is convenient for tracking contaminated food, speeding up the removal of problematic food, and effectively preventing the spread of food safety problems.

Moreover, when consumers buy food, it is easy to see where the food they eat comes from, how long it has been produced and what fertilizer has been applied, which will be clear. Are we ready for the arrival of blockchain? We still have to look at the future development.