China's MSD digital currency
official website https://mymsdspace.com/landing/zh
manxingyun digital currency cannot be listed because manxingyun digital currency platform is not a formal financial platform. There is a risk of loss if you put money on the digital currency platform. On the surface, the manxingyun digital currency platform is indeed a very formal foreign exchange company regulated by the futures exchange
manxingyun digital currency platform has limited the number of monthly payments and profits, and the payment is slow, which indicates that the capital has been unable to make ends meet. A large number of investors in xidingge are beginning to wake up, and the successive payments finally make xidingge unable to sit down. Not only leaders are withdrawing money, but some members are also withdrawing money. A large-scale withdrawal of funds will definitely lead to the collapse of Xi Dingge, and the restriction of funds is just a delay
extended information:
precautions for customers in financial management:
1. Review of their own assets: including the stock assets and future income expectations, and know how much money is reasonable, which is the most basic premise
Setting financial objectives: we need to clarify financial objectives qualitatively and quantitatively from the specific time, amount and description of objectives3. Clear risk type: don't make the assumption of risk preference without considering any objective situation. For example, many customers put all their money in the stock market without considering their parents, children and family responsibilities. At this time, their risk preference deviates from the range they can bear
Before entering the market, we should do more analysis, look at the news on both sides and look at the charts; After entering the market, keep in touch with the market. Don't just watch the news that is good for you just because you have a good positionIt does not belong to
Hello students, MSD currency is digital currency, its price is about 0.1 yuan. Thank you
EMV is similar to what I said upstairs, but there are still three card organizations. After Eurocard was acquired by MasterCard, Japan's JCB joined. Therefore, at present, emvco is dominated by visa, MasterCard and JCB. The localized version of EMV in China is pboc2 - loan record part of the people's Bank of China<
the EMV specification itself is divided into the electrical layer and protocol layer of level 1, and the application layer of level 2. Programmers should be aware of the difference
as for the version, the latest version of EMV is EMV2000 4.2, but most of the machines on the market are 4.1a-4.1e, while the earlier version 4.0 and emv96 (3.0) have been completely eliminated
before 2007, emvco only stipulated the card and terminal specifications of contactless IC card. In 2007, in order to unify the differences between visa, MasterCard, JCB, etc. on the basis of iso14443 and contactless IC card specifications, EMV issued the formal specification of contactless level 1, version 2.0 (there was informal 1. X specification before 2007)<
next, let's talk about contactless payment. The popular payment methods in the market include contactless chip card and NFC mobile phone payment. The latter is ignored by the owner of the building.
the specifications involved in the former are:
qvsdc / MSD of visa contacts, paypass MIP and paypass MAG stripe of MasterCard, and qpboc / MSD of the people's Bank of China (actually UnionPay)
obviously, from the naming, we can see that qpboc / MSD is actually the Chinese version of visa. The reason is very simple. The card testing center of PBC is the cooperative Laboratory of visa
in addition, e to the widespread application of traditional magnetic stripe card and contact IC card in the market, in order to be compatible with the billing system to the greatest extent, level 2 of non-contact specification includes two application specifications, that is, analog magnetic stripe card, but MSD and paypass MAG stripe for security authentication are added, as well as qvsdc, qpboc and paypass MIP for fully analog CPU card
it can be seen from the above that emvco itself defines the level 1 and level 2 specifications of EMV contact IC card. Other card organizations, including China UnionPay, have no say in this area, and can only conct network access test on the basis of EMV contact level 2, which is usually connected to ISO8583. The emergence of EMV contact IC card is a transformation of level 2 of EMV contact payment, In order to adapt to fast payment and offline consumption (similar to telephone IC card, but different in nature), so the major card organizations go their own way here, even use different level1, which greatly destroys the compatibility. To this end, emvco after several games, finally released the EMV official non-contact level 1, and the major card organizations promised to be compatible with it. For level2, emvco is very sorry that it has not reached a consensus like the contact IC card. Finally, it issued an entry point specification, which is used for the terminal to call various non-contact applications at the same time, such as visa, MasterCard, JCB, pboc2, AMEX and so on
it should be pointed out that the above specifications only define an application core, namely kernel. In actual use, network access tests of major card organizations are also required. These networks, namely acquiring networks, such as China UnionPay, or ICBC, ABC, etc., are usually based on ISO8583 package, while some core data, such as IC card transaction certificate, etc, Access to the billing system through the 55 domain of ISO8583
finally, please remember the terms: level1 = electrical layer and protocol layer, level2 = application layer
the specifications are as follows:
EMV v4.2 Book 1 - Book 4 (4 PDFs), entry point specification v1.0, EMV contactless communication Protoco, etc. of emvco website are free downloads
pboc2 specification of people's Bank of China, and qpboc / MSD, It is generally considered that the Chinese translation of EMV ISA, together with some things unique to China, is relatively difficult to get, and the company should have it
for visa and MasterCard, go to their official website and spend money. Only the company can afford it