Blockchain bicycle

1. As a kind of decentralized database, blockchain has the characteristics of openness, distribution and irreversibility. As an electronic data storage platform, blockchain has the advantages of low cost, high efficiency and stability. At present, blockchain has been applied in many fields and has brought many changes to our life. Now many electronic contract platforms, such as Fada This kind of blockchain technology has been applied in the chain of evidence, and the blockchain technology has also been accepted by the court

2. The block chain will have many applications in the future, just like the Internet plus in previous years. For example, blockchain + finance, blockchain + logistics, blockchain + retail... In short, the application space of blockchain is far beyond people's imagination today, just like we couldn't imagine bike sharing ten years ago

of course, the layout of blockchain needs a huge amount of capital and high-tech, which is difficult for ordinary people to get involved in, but we might as well invest in the stocks of some companies with layout in the blockchain field. Or you can try digital currency. After all, it is the most common and mature application of blockchain technology. It has great potential in the future. However, the headache of digital currency is that with thousands of digital currencies coming out, it is difficult to distinguish which are money tools and which have real potential. Therefore, it is suggested to go to a relatively large trading platform, because they usually take the initiative to eliminate bad money into the market in order to maintain their reputation. For example, large-scale digital currency trading platforms such as fire coin Pro only have 100 digital currencies online. Although some potential divine coins may be eliminated, generally speaking, they still have a bottom in mind.

3.

A: the main application fields of blockchain technology are finance, Internet of things and logistics, public service, digital right, insurance and public welfare

First, in the field of finance,

blockchain has great potential application value in international exchange, letter of credit, equity registration, stock exchange and other financial fields

Second, the Internet of things and logistics

blockchain can also be naturally combined in the field of Internet of things and logistics. Through blockchain, we can rece logistics costs, trace the proction and delivery process of goods, and improve the efficiency of supply chain management

Third, in the field of public service, blockchain is closely related to people's proction and life in the fields of public management, energy and transportation. However, the centralization of these fields also brings some problems, which can be transformed by blockchain

Fourthly, in the field of digital right, through blockchain technology, works can be authenticated to prove the existence of text, video, audio and other works and ensure the authenticity and uniqueness of ownership

In the field of insurance, insurance institutions are responsible for fund collection, investment and claim settlement, and often have higher management and operation costs

Sixth, the data stored on the public welfare field

blockchain is highly reliable and tamperable, which is naturally suitable for social public welfare scenarios. The relevant information in the public welfare process, such as donation project, collection details, fund flow, recipient feedback, etc., can be stored on the blockchain, and can be made transparent and public, which is convenient for social supervision

4.

Can be

blockchain to achieve a simple description of the principle of

blockchain technology as a digital accounting technology, its core is to save the transaction data block, in the form of encryption, according to the order of time chain record. Blockchain itself is a public database. The system stores the new business data in a container called block, and adds the block to the chain composed of existing blocks. It's a bit like a snake. The more you eat, the longer the snake's body; In the application scenario of bitcoin, the data is a set of transfer transaction records. In the application scenario of bike sharing, these data can be the transaction records of car borrowing and returning

The simple implementation code of

blockchain

in the above code, the data structure stored in the core of blockchain is list, which can be accessed through
new_ New blocks generated by block () are constantly added to the end of the blockchain. The hash value of each block contains all the data information of the block. In the process of calculating the hash
value, the hash
value of the previous block needs to be referenced, so tamper proof is realized. The biggest value of blockchain database is this highly tamper proof trusted computing. This has been successfully demonstrated in our simple blockchain implementation. In commercial level blockchain applications, the process of creating new blocks is called smart contract, and blockchain is growing through smart contract

the following is the running result of the code, which is different at different times

running results

< img / >

5. DAPP has been widely used since Ethereum's smart contract came out.

6. What you see and understand is completely correct. Now all those who are playing blockchain are all such deceptive things. They are just playing a slogan instead of a real blockchain. Big regular companies are playing this slogan to cheat people. They are very speechless

7. Hello, it is reported that the public platform of SMIC blockchain in Changsha is going to launch blockchain + human resource services recently. We can look forward to how they can do blockchain + human resource applications.

8. Any new technology will inevitably face doubts and bubbles, and block chains are no exception. We should embrace change and avoid bubbles to maximize value.
let me give you an example. You may understand how many cycling enterprises have been born in the vent of bike sharing? Now, with the tuyere fading, there are only a few left. And even the head of the enterprise is not easy
1. is sure to generate bubbles. Br />2. foam growth. < After the br />3. bubble burst, it can not be questioned that new technology is useless.
(bike sharing has greatly changed travel)
4. Panic will lead to extremely low prices, and then it will be profitable
5. The survival rate is very low, except that the head can live, others almost die
(bitcoin - 85% +, Shanzhai Coin - 95 ~ 99% and even death)

bitcoin has been questioned countless times, or it has survived, and is still constantly reaching new heights, so there is no value to speak of
from the perspective of blockchain, bitcoin is also similar to gold and silver as a part of assets< I ask why gold, silver and diamonds are valuable? In essence, it's just a stone
because everyone recognizes it, it has value
What do you think of the centralization of money and paper money? By the way, the soft currency continues to depreciate
I remember that I knew about bitcoin in 2013, only after it plummeted
at that time, I was very disdainful. What's the value of this thing except to hype the capital market Now many little friends think the same way)

and then they came to the beginning of April 17
it's soaring again attracted my attention, and it kept rising until 20000 soft coins
I was shocked and didn't understand
however, with the growth of knowledge (graation from University), I think there must be some rationality in the existence of this thing
in philosophy, "being is reason"
moreover, its soaring price must have its unique features. We can't judge new things with our present eyes, otherwise we will suffer a great loss
this is also in philosophy, "new things will inevitably eliminate old things, this is e to the advanced nature of new things"

and read a lot of books, and also think a lot after.
I'm almost sure blockchain will change the world
therefore, we must embrace change instead of sticking to self-esteem

the application of blockchain has been written in "illustrated blockchain", covering all aspects of life
source: Zhihu

9.

Time needed for transfer between bank cards:

time needed for peer transfer:

① intra city peer real-time arrival, generally delayed in about 2 hours

② when you go to other places, you should remit money before 3:00 p.m. and get it on the same day; 3: After 10:00, it will arrive the next day at the latest

③ private business less than 20000 yuan is not affected by Saturday and Sunday, and will arrive on the same day; In case of more than 20000 yuan on Saturday and Sunday, it will be postponed to the working day

(4) the company business will be closed on Saturday and Sunday; It should be handled before 3:00 p.m. on Friday and arrived on the same day; After 3:00 p.m. on Friday, it will arrive the next working day

inter bank transfer:

1. Because inter-bank transactions need to be processed through the bank counters of both sides, it usually takes one to three working days to get to the account

(2) if the account is transferred on Friday night, it will arrive on next Monday at the earliest and on Wednesday at the latest

③ from Monday to Friday, the transfer can basically arrive at the opposite bank on the same day before 3:00 p.m., but whether the opposite bank enters the account in time determines the actual time of arrival

extended information:

delayed arrival of account

on the morning of September 23, 2016, six departments jointly issued the notice on preventing and cracking down on Telecom Network fraud crime. According to the notice, since December 1, 2016, if an indivial transfers to a non namesake account through the bank self-service teller machine, the funds will arrive in the account 24 hours later

the people's Bank of China has issued the notice on strengthening the management of payment and settlement and preventing new types of illegal crimes in telecommunication network, Comprehensively Strengthening the management of account real name system, bank card business and transfer management

it is clear that from December 1, 2016, indivials who transfer through self-service teller machine can apply to the card issuing bank for cancellation of transfer within 24 hours after the card issuing bank accepts the transfer

reference: transfer network

10. Please, people only need 10 Australian dollars a month, you need 10 Australian dollars in two weeks!!!