Virtual currency delisted at present

4. Now it has basically disappeared, and it is not clear whether it has died
MLM can be confirmed in three ways: "first, it depends on whether there are goods on sale; second, it depends on whether it makes money by pulling people's heads; third, it depends on the level of commission to see whether it forms a pyramid system."
some MLM organizations also have goods, but it depends on whether the value of the goods corresponds to the price. Ruan Qilin said that the virtual currency "V Bao", which is not open source, "is a prop built by the MLM organization to cover up its essence of MLM.".

5.

Dag's full name is "directed acyclic graph". There is no block concept. Instead of packaging all data into blocks and linking blocks with blocks, each user can submit a data unit, which can contain many things, such as transactions, messages, etc. Data units are linked by reference relation to form DAG (directed acyclic graph) with partial order relation. The characteristic of DAG is to write data units asynchronously. A large number of wallet clients can write transaction data to DAG autonomously and asynchronously, which can support huge concurrency and high speed. At the same time, trustnote, which uses DAG technology, also supports declarative smart contracts. Declarative smart contracts mean that users can directly write and describe the results they want, and describe what they want to do in a very simple language that everyone can understand

by the end of 2017, there are more and more "high traffic applications". In addition to the mainstream e-commerce platforms, there are also live broadcast platforms, P2P financial management, today's headlines, Momo and so on. If "high traffic applications" are combined with DAG blockchain technology, what changes will it bring to the instry? In addition to the characteristics of the blockchain itself, such as decentralized, distributed ledger and tamper proof, DAG blockchain technology can not only support high concurrency, combine with double-layer consensus mechanism, use workload to prove consensus algorithm, but also prevent the "double flower" problem

then, how can DAG support high concurrency? First, the data is not as strong synchronization as bitcoin and Ethereum, but weak synchronization, allowing nodes to have different data at the same time, and the data can have some small differences. Second, the transaction can be confirmed through the reference between data units, that is, the subsequent units refer to the previous units. In this way, we don't need to transfer the data to the miners, and the whole process is completed by ourselves. This process is very fast. Dag is a beautiful way to solve the problem of high concurrency. Compared with the previous lightning network, DAG has its inherent advantages in other aspects

let's see how DAG can prevent "double flower"? If you can select a mainchain in a directed graph, you will find that all the nodes in the graph can be sorted in one way. If you connect the serial numbers in a row, the graph will become the same sequence structure as a blockchain, that is, the nodes that are sorted out, and each node is a transaction, not a block. Therefore, the determination of the main chain, through the main chain, can form a total order. The final result is that in a certain logical state, the transactions are sorted, which is the most critical part of DAG

"high traffic application" is a smooth expansion with the increase of the number of nodes and transactions. When the number of nodes exceeds 100 million or the number of transactions exceeds 1 million, the DAG's characteristic is that the more transactions, the faster, the more nodes

6. Generally refers to a currency price may return to zero, so it will be delisted

7.

It is reported that the exchange of the fourth set of RMB partial bonds in Beijing will start on May 1 at a time when the circulation of the fourth set of RMB partial bonds will stop. It is reported that the delisted currency can either be exchanged or collected

previously, the central bank said publicly that the circulation of stopped bonds accounted for less than 1% of the circulation of RMB, and most of them were damaged or in a state of precipitation, that is, they were rare in circulation, only received but not exchanged, and there were less and less money on the market. There were two ways to collect and exchange the money after it could not be circulated:

it is reported that, The centralized exchange period of the fourth set of RMB bonds is from May 1, 2018 to April 30, 2019. During this period, the holders can go to the business outlets of various banking financial institutions for exchange. After the end of the centralized exchange period, the holders of part of the fourth set of RMB bonds can go to the banking financial institutions selected by the branches of the people's Bank of China for exchange

Article source: cctv.com

8. The main reason should be information asymmetry. Whether the service provided by the property service enterprise is good or bad, the information that the bid inviting party and the bidder have is different. The bid inviting party naturally wants to obtain the best service with the lowest price, but e to the lack or error of information, it is difficult to accurately identify the high-quality service by bidding quotation, which is likely to lead to the high price and high-quality service can not enter the bidding, and the phenomenon of expelling good money in the bidding market appears.

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legal representative: Jiang Minjie
time of establishment: February 2, 2007
registered capital: RMB 10 million
Instrial and commercial registration number: 330681000058078
enterprise type: limited liability company (invested or controlled by natural person)
address: Waizhuang village, Lipu Town, Zhuji City