Digital currency POS machine
POW: full name of proof of work
pos: proof of stake
both of them are the consensus mechanism of blockchain and the bookkeeping method of digital currency
the difference is:
1. POW mechanism: workload proof mechanism, that is, the proof of workload, is the requirement that must be met when generating a new transaction information (that is, a new block) to be added to the blockchain. In the blockchain network based on workload proof mechanism, the ability of nodes to obtain the correct numerical solution to generate blocks by calculating the numerical solution of random hash hash is the specific performance of node computing power
POS mechanism: the proof of rights and interests requires the certifier to provide a certain amount of ownership of cryptocurrency. The operation mode of the proof of rights and interests mechanism is that when creating a new block, the miners need to create a "currency right" transaction, and the transaction will send some coins to the miners themselves according to the preset proportion. According to the proportion and time of token owned by each node, the equity proof mechanism reces the mining difficulty of nodes proportionally according to the algorithm, so as to speed up the speed of searching for random numbersextended materials:
the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software and the P2P network on it were designed and released. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses the distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses the design of cryptography to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction
So far, Hangzhou City, Shenzhen City and Guizhou Province have become the three hot areas of the central bank's digital currency pilot, and the virtual digital currency ATM has not been installed yet
expand answer:
China's digital currency characteristics:
China digital currency is the proct of the combination of traditional currency and the Internet, and is the Internet plus of financial and monetary domain. p>
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China's digital currency will be the only digital currency issued by the state in the world so far, with national credit and currency anchor that bitcoin and other digital currencies do not have
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China's digital currency can learn from blockchain and other new network technologies to enhance its own security and stability. Blockchain is also a kind of mesh topology, which can rece the task of the central server and has anti-counterfeiting function
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China's digital currency relies on a secure and stable Internet. The promotion and application of quantum communication technology is of great significance to the security of China's digital currency
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China's digital currency is based on the real RMB, not a kind of currency made out of thin air. The two are only different in form, the former is electronic data, the latter is RMB paper money
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China's digital currency is a kind of electronic currency created by digital network technology, which also has the main characteristics of network packets
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digital currency is an encrypted algorithm, just like a cash note with a unique number, which can not be tampered with< br />
what is China's digital currency:
2. Customer service: certification business, enjoy one-to-one exclusive services, exclusive standards, join the certification business community, etc
3. Applicable rules: Certified merchants are required to abide by the rules more strictly than ordinary merchants, and super merchants are required to abide by the rules more strictly than certified merchants
4. Scope of application: global businesses support foreign currency transactions (US dollar, Singapore dollar, etc.).
Finance: Citibank, Morgan Stanley Investment, JPMorgan Chase Bank, Standard Chartered Bank, HSBC, BNP Paribas, Credit Agricole, Societe Generale, Commerzbank of Germany, Mizuho bank, Sumitomo Mitsui bank, Mitsubishi UFJ Bank, Netherlands International American International, Zhongli, standard life, Samsung Life under Samsung
Trade Logistics: Porsche Volkswagen logistics center, Dow Chemical Logistics Center, Ge leasing, Mitsui procts, Mitsubishi, Itochu (7 & 11), Wal Mart, Cuifeng, Carrefour, Jiadebao, SHV, Metro, AEON
transportation: Maersk, Lufthansa, Ana, JAL Korean Airlines, UPS, DHL, TNT, FedEx (Daejeon)
chemical: BASF, AkzoNobel, Henkel, P & G, GlaxoSmithKline, aisanya
Machinery: Caterpillar, United Technologies (OTIS), Honeywell, John Deere, Schlumberger, Halliburton, Boeing, EADS (Airbus), Hitachi, ALSTOM, Siemens Emerson Process
Electronics: Panasonic, Ricoh, IBM, Seiko Epson, Canon, Fuji optical machinery, Fujitsu, Motorola, Samsung, LG, Microsoft, abb electric, Schneider Electric
human resources: Wanbao Shenghua
automobile: Toyota, Continental, Bridgestone, Honda, Denso, Aisin precision machinery, Magna
food: Kraft, Nestle, Coca Cola Pepsi, InBev, Sally, Bangqi, Altria
in 2007, TEDA is one of the world's top 500 enterprises in TEDA
TEDA has attracted a large number of multinational enterprises representing the world's most advanced proctive forces. As of March 2007, a total of 59 multinational companies from 10 foreign countries and regions have invested in 129 enterprises in TEDA<
enterprise name
Toyota Motor Co., Ltd.
Mitsubishi Corporation
Mitsui & Co., Ltd.
Itochu Corporation
Sumitomo Corporation
Marubeni Corporation
Honda Motor Co, Ltd.
Matsushita Electric Instrial Co., Ltd.
nissho Iwai, a Japanese company
Canon Inc.
Daiei, Inc.
Denso Corporation
Toyota Tsusho
Aisin Seiki, a Japanese company
Sanyo Electric Co, Ltd.
Idemitsu Kosan
Bridgestone
Sekisui
Nippon Yusen
NEC
Mitsubishi Chemical
Kyocera
nimbus All medicine rimil
Nomura Securities
Kawasaki heavy instries
IBM
International Business Machines Corporation
Exxon Mobil
Altria group
Motorola, Inc.
PepsiCo, Inc.
Honeywell, Inc.
the Coca Cola Company
Emerson Electric Co.
Halliburton Co.
Deere & Company
Tyco international
Eastman Kodak
United Technologies
Emerson Electric
chevron
At & T
Volkswagen AG, Germany
Bosch Robert Bosch
continental
Samsung Electronics Co., Ltd.
Hyundai Motor Company
LG International Co.
Pohang Iron & Steel Co, Ltd.
Akzo Nobel
Dutch trading SHV holdings
Flextronics International Ltd.
Alcatel Co.
Lafarge group
Schneider Electric
HSBC Holding
GlaxoSmithKline, Inc.
Nestl é SA
ASI bramble farry ABB Group
Hon Hai Precision Foxconn
list of top 100 enterprises in TEDA in 2006
ranking enterprise name ranking enterprise name
1 Motorola (China) Electronics Co., Ltd. 51 Tianjin Xingyun (Group) Co., Ltd.
2 Tianjin FAW Toyota Motor Co., Ltd. 52 sew instrial recer (Tianjin) Co., Ltd
3 Tianjin Samsung Communication Technology Co., Ltd. 53 Meike international furniture (Tianjin) Manufacturing Co., Ltd.
4 Tianjin Jinya Electronics Co., Ltd. 54 Tianjin Donghai physicochemical Auto Parts Co., Ltd.
5 Freescale Semiconctor (China) Co., Ltd. 55 feibida electronic components (Tianjin) Co., Ltd.
6 Tianjin Samsung electronic display Co., Ltd. Tianjin TEDA Investment Control Co., Ltd Tianjin Tongguang Samsung Electronics Co., Ltd. 57 general semiconctor (China) Co., Ltd.
8 Tianjin Samsung Electronics Co., Ltd. 58 Tianjin Yamaha Electronic Instrument Co., Ltd.
9 Tianjin Samsung optoelectronics Co., Ltd. 59 Tianjin Shuangye xiezhan Machinery Co., Ltd.
10 Tianjin TEDA Construction Group Co., Ltd. 60 Bridgestone (Tianjin) Tire Co., Ltd.
11 Tianjin Samsung vision Co., Ltd.
12 sew transmission equipment (Tianjin) Co., Ltd.
62 Agricultural Bank of China Tianjin Economic and Technological Development Zone Branch
13 Samsung high tech motor (Tianjin) Co., Ltd.
63 Tianjin Sanyo communication equipment Co., Ltd.
14 bank of China Co., Ltd Tianjin Binhai Branch 64 Tianjin Jun'an coal coke chemical Co., Ltd.
15 Tianjin Yingtai Automobile Accessories Co., Ltd.
65 Tianjin dingzheng printing packaging material Co., Ltd.
16 Tianjin Taida Group Co., Ltd.
66 Dacheng Wanda (Tianjin) Co., Ltd.
17 Tianjin Jinqiao Welding Material Group Co., Ltd.
67 Zhengda Group (Tianjin) Instrial Co., Ltd.
18 Jun'an (Tianjin) Instrial Co., Ltd Ltd.
68 Butler (Tianjin) Co., Ltd.
19 Tianjin Samsung vision Mobile Co., Ltd.
20 Tianjin Electronic Equipment Co., Ltd.
70 Tianjin unified instry Co., Ltd.
21 ROM semiconctor (China) Co., Ltd.
71 Kyocera (Tianjin) Trading Co., Ltd.
22 Yaguang Nepro precision injection molding (Tianjin) Co., Ltd.
72 Tianjin Nanqiao Oil Co., Ltd.
23 Tianjin Dingjin Food Co., Ltd.
73 Tianjin Zhengda feed Technology Co., Ltd.
24 PPG coating (Tianjin) Co., Ltd.
74 Tianjin steel pipe engineering equipment and materials Co., Ltd.
25 Tianjin CIMC Beiyang container Co., Ltd.
75 Tianjin Alps Electronics Co., Ltd.
26 Schneider Electric low voltage (Tianjin) Co., Ltd.
76 Tianjin haoan Mining Co., Ltd.
27 Tianjin Samsung Motor Co., Ltd.
77 Samsung Aishang (Tianjin) International Logistics Co., Ltd.
28 novozyme (China) Biotechnology Co., Ltd.
78 Tianjin Toyota Logistics Co., Ltd.
29 Aisin (Tianjin) body Parts Co., Ltd.
79 modern Gaoxin Electronics (Tianjin) Co., Ltd.
30 Tianjin Binhai Development Investment Holding Co., Ltd 80 Tianjin COSCO Guanxi coating Chemical Co., Ltd.
31 China Construction Bank Tianjin Economic and Technological Development Zone Branch 81 GlaxoSmithKline (Tianjin) Co., Ltd.
32 Herbie (Tianjin) Electronics Co., Ltd.
82 Honeywell (Tianjin) Co., Ltd.
33 instrial and Commercial Bank of China Tianjin Economic and Technological Development Zone Branch 83 Tianjin Aksu Nobel peroxide Co., Ltd.
34 Tianjin Jinbin Development Co., Ltd. 84 jpower Technology (Tianjin) Co., Ltd.
35 Novo Nordisk (China) Pharmaceutical Co., Ltd. 85 Sidis (Tianjin) Electronics Co., Ltd.
36 Tianjin Development Zone Fulin Development Co., Ltd. 86 Jinliang (China) Co., Ltd.
37 spiker cooling technology (Tianjin) Co., Ltd. 87 kelixin Electronics (Tianjin) Co., Ltd.
36 />38 AkzoNobel coatings (Tianjin) Co., Ltd. 88 Foxconn (Tianjin) Precision Instry Co., Ltd.
39 Agricultural Bank of China Tianjin Tanggu Branch 89 Metso mining machinery (Tianjin) Co., Ltd.
40 Beihai grain and oil instry (Tianjin) Co., Ltd. 90 Tianjin 712 communication Broadcasting Co., Ltd.
41 Tianjin Coca Cola Beverage Co., Ltd. 91 Tianjin Economic and Technological Development Co., Ltd District mechanical and electrical equipment company
42 civil engineering company of China Construction Sixth Engineering Bureau 92 Tianjin Sanhuan Lexi new materials Co., Ltd.
43 Tianjin Fuji Tongtian Electronics Co., Ltd.
93 Tianjin Wantong fashion Property Co., Ltd.
44 Tianjin Jinzhu automobile wiring harness Co., Ltd.
44 Tianjin Aida automatic transmission Co., Ltd.
45 Tianjin lejin Dagu Chemical Co., Ltd.
95 days Jinlitong carbon procts Co., Ltd.
46 Tianjin YAZAKI Auto Parts Co., Ltd.
96 Tianjin Development Zone Jinpeng plastic profile Manufacturing Co., Ltd.
47 John deer tiantuo Co., Ltd.
97 Tianjin Stanley Electric Co., Ltd.
48 Tianjin rolling three logistics Co., Ltd.
49 Tianjin TEDA Jinlian Electric Power Co., Ltd.
99 Tianjin Binhai Energy Development Co., Ltd.
50 Tianjin World supermarket chain Co., Ltd. 100 Tianjin Meihe Instrial Development Co., Ltd