Who invented DDC digital currency

1.

The concept of bitcoin was founded by Nakamoto

On December 12, 2010, when bitcoin graally became a hot topic, he quietly left and disappeared from the Internet

As a descendant of samurai, Nakamoto was born in 1949 in Beppu, Japan. His mother, quanzi, was a Buddhist and brought him up in poverty

When his parents divorced in 1959, Nakamoto's mother remarried and immigrated to California with her three sons. Nakamoto and his stepfather don't get along well, but according to his younger brother Arthur, Nakamoto showed his talent in mathematics and science when he was very young, but also showed his "fickle and strange interest"

Nakamoto graated from Caltech, majoring in physics. Upon graation, he joined Hughes Aircraft and worked in defense and electronic communications. Later, Nakamoto worked for the U.S. military, and his experience was classified as a state secret. Now searching his files, his life is a blank

In 2008, in an e-mail group discussing information encryption on the Internet, he published an article outlining the basic framework of the bitcoin system. In 2009, he established an open source project for the system, officially announcing the birth of bitcoin. On December 12, 2010, when bitcoin graally became the climate, he quietly left and disappeared from the Internet

2. The emergence of digital currency was born under the expectation of pursuing a more perfect social and economic transaction mode and Global trade facilitation. It was discovered in the process of using science and technology to graally explore this need. The history of digital currency should start with the creation of bitcoin
the creation of digital currency
the origin of digital currency can be traced back to the 1990s, and electronic gold is one of the best forms. E-gold came out in 1999. It is based on real precious metals. Another consistent digital currency service is LR. Founded in 2006, it is an online payment company in Central America. It allows users to convert U.S. dollars or euros into LR, and only 1% of the transaction cost can be exchanged freely. This kind of two-way service is used by some people to launder money, so it is inevitably shut down by the U.S. government under the charge of money laundering
then, a person named Nakamoto published an article called "bitcoin: a peer-to-peer e-cash system" in the cryptography forum, which gave birth to bitcoin. Compared with legal currency, bitcoin does not have a centralized discoverer, but is generated by the calculation of network nodes, and is composed of a series of complex codes generated by computers. Anyone can dig, buy and sell bitcoin, and it is an anonymous transaction and cannot be tampered with. As a result, it is surrounded by geeks of popular technology, pursuers of complete liberalism and speculators
digital currency can be divided into open mining cryptocurrency and issuing cryptocurrency. Digital currency is defined as an Internet-based currency or exchange medium, which is different from physical currency. Digital currency can realize instantaneous transaction and ownership transfer without borders
for reference.

3. Yes, and a lot of them
Ruitai currency: it is a digital currency designed with the participation of Sha Qian, a well-known digital currency scholar in China. It is an asset certificate, and credit endorsement is a medical equipment asset and part of the shares of Sha Qian Tong
Yuanbao coin: it was developed by Yuanbao team in China. Yuanbao coin is a relatively successful currency in China, and many related projects have been carried out
Qianjin card: developed by Qianfeng team in China, it is mainly used in Qianfeng mall and overseas luxury purchasing market.

4. At present, digital currency is not really in circulation in any country. In South America, there was a small country that wanted to issue its own sovereign digital currency, but there was no latest progress. Of course, China, Britain and other big countries have planned to issue digital currency, but it is still in a testing stage and has not really implemented it
the first country to recognize bitcoin as legal was Germany, which first defined bitcoin as an alternative currency. Of course, in the future, sovereign digital currencies may be popular, and digital cryptocurrencies such as bitcoin, Ruitai coin, Laite coin and vitality coin will become a supplement.

5. Can lose money, this is the black platform, false disk. You can't get the money back if you put it in. There's no pie in the world. Wake up.

6. DDC is a virtual digital asset under the virtual earth ecology. Its proction process is closely related to users' registration, providing complete personal information after logging into DAPP, participating in treasure digging speed, the number of DDC holders, the number of friends registered after sharing, and participating in the construction of Virtual Earth. Users must obtain it through the above ways. In the virtual earth ecosystem, DDC will become the exchange medium for users to participate in the construction of Virtual Earth, ensuring the equal rights and obligations of users; With the development of application market, DDC has a broad market prospect; However, with the increasing difficulty of treasure digging and the growth of users, the earlier the users participate, the more DDC they get
DDC has not been listed in any exchange and has not been included in any platform, so we need to pay attention to the risk of trading.

7. (Deep Hole Dynamic Compaction Technology) is a proprietary and patented technology of Beijing ruilitong Foundation Engineering Co., Ltd. this technology has been applied in hundreds of projects, all of which meet the design requirements. DDC pile was identified by Beijing Municipal Construction Commission as "the technical level is the first at home and abroad", and the Ministry of construction compiled regulations for DDC pile technology and identified that DDC pile technology has reached the international advanced level. In 2001, 2005, 2008 and 2011, DDC pile technology was listed as the national key technology by the Ministry of construction. In November 2003, DDC pile technology won the Gold Award, the highest international award, at the 52nd world invention Expo held in Belgium, which is the only Gold Award for foundation treatment technology in China so far
deep hole super compaction (SDDC) is a patented technology of ruilitong foundation, which is a foundation reinforcement technology based on dynamic compaction technology, and a foundation treatment technology integrating "dynamic consolidation" mechanism with modern science and technology. After treatment, the bearing capacity of the foundation is very high, which can be increased by 2-9 times, and the compression deformation is very small.

8. The deep hole dynamic compaction (DDC) technology invented by Si Bingwen, chairman of Beijing ruilitong foundation Co., Ltd., has been successfully applied in the foundation treatment of national key projects, such as Baoji No.2 Power Plant, Datang International Yuncheng Power Plant, Sinopec Yanshan 4x10 million m3 oil tank, Dalian West Pacific 100000 m3 oil tank, and China Aluminum Guizhou 100000 m2 garbage disposal
is that ok?