What is legal currency in bitcoin

1. The concept of bitcoin (BTC) was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009
according to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system
unlike all currencies, bitcoin does not rely on a specific monetary institution to issue. It is generated by a large number of calculations based on a specific algorithm
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 money circulation
this answer is provided by KangBo finance and economics. KangBo finance and economics focuses on the interpretation of financial hot events and the popularization of financial knowledge. It adheres to the profession and pursues fun. It is a financial content that people can understand and transmits financial value in a variety of vivid ways. I hope this answer will help you.

2. These are all virtual currencies, but they have been torn down. They are all scams. They are illegal fund-raising to cheat other people's money.

3. Simply put, it is to buy bitcoin directly in RMB. If you want to experience it, I suggest you go to the okex exchange to have a try. In addition to legal currency transaction, okex also has currency transaction, that is, exchange currency for currency. I'm glad you've accepted my answer

4. Legal currency transaction is a deposit platform where legal currency is used to exchange digital cryptocurrency, such as okex's legal currency platform. After entering, you can directly select the currency you want to buy, such as bitcoin, and then enter the purchase amount. The platform will automatically generate orders. Bitcoin will arrive in the account within 1 minute after payment, which is equivalent to the completion of deposit

5.

China does not issue digital currency, and all the existing digital currencies are illegal

the central bank pointed out that no legal digital currency has been issued, and no institutions and enterprises have been authorized to issue legal digital currency. At present, the so-called "digital currency" in the market is not legal digital currency

virtual currency is the electronization of illegal currency, and its original issuer is not the central bank. This kind of virtual currency is mainly limited to circulation in a specific virtual environment. Digital currency can be used for real goods and services transactions, but only the digital currency issued by the state is legal digital currency

"the legal currency of our country is RMB." In the risk warning, the monetary Bureau of the people's Bank of China once again stressed that RMB is uniformly printed and issued by the people's Bank of China

extended information:

with the soaring price of virtual currency represented by bitcoin, digital currency and the blockchain technology behind it have attracted great attention of the global financial community. In fact, legal digital currency has not yet been issued in China. Recently, the official website of the monetary Bureau of the people's Bank of China (PBOC) released the risk warning on issuing or promoting digital currency in the name of the people's Bank of China

in 2013, the central bank, together with five ministries and commissions, issued the notice on prevention of bitcoin risks, which clearly defined non legal digital currencies such as bitcoin as virtual commodities, which do not exist in the form of currency and legal currency

At the same time, digital money is different from electronic payment. In the actual use experience, digital money and electronic payment may feel similar, but they are still quite different in essence. Before digital currency, the financial instry has been highly informationized

such as Internet banking, WeChat, Alipay and other payment electronic popularization graally, physical cash accounts for only a very small part of all circulating currencies. In spite of this, because the money used in the transaction comes from the bank account, it actually corresponds to the banknotes

currently, digital currency in the market involves multi-level marketing

digital currency is a new technology that can improve the efficiency of transaction, but it is targeted by lawless elements to carry out pyramid selling and fraud in its name

the official website of the monetary Bureau of the people's Bank of China issued the risk warning on issuing or promoting digital currency in the name of the people's Bank of China. The central bank pointed out that recently, indivial enterprises falsely used the name of our bank to label relevant digital procts as "authorized issuance by the people's Bank of China", or falsely claimed that the digital currency promotion team of the central bank issued, in an attempt to deceive the public and take the opportunity to make huge profits

in the risk warning, the central bank stressed that the bank has not issued legal digital currency, nor authorized any institutions and enterprises to issue legal digital currency, and there is no promotion team. At present, the so-called "digital currency" in the market is not legal digital currency

at the same time, the so-called "digital currency" launched by some institutions and enterprises and the so-called promotion of the central bank's issuance of digital currency may involve pyramid selling and fraud. The general public should raise their risk awareness, invest rationally and prudently, and prevent the interests from being damaged

6. Legume government endorsement, bitcoin community consensus, one based on normal execution, one based on Technology (difficult to decompose large numbers)

7. The development of ball mill equipment and technology focuses on energy-saving ball mill consumption and steel consumption, develops new high-efficiency and low-energy ball mill equipment, and improves the material and structural shape of ball mill cylinder liner; Improve the shape and material of ball mill medium; Improve the transmission mode of ball mill and automatic control of ball mill. The purpose is to improve the proction rate and efficiency of ball mill, rece the energy consumption, steel consumption and proction cost of ball mill under the premise of ensuring the fineness of ball mill procts. The following is a brief introction to the development of ball mill equipment. Overview of the development of ball mill equipment
(1) according to the proction practice experience in China, the material, service life and reserve of vulnerable parts of ball mill are listed in the table
(2) overhaul. The inspection period is generally about 5 years. In addition to all items of medium repair, the inspection items include replacing the main bearing and big gear, inspecting, repairing or replacing the cylinder and end cover, and repairing, aligning or secondary grouting the foundation< (3) intermediate repair. Generally, it takes 6-12 months. In addition to all minor repair items, the inspection items also need to clean and adjust all parts of the equipment, such as repairing the transmission gear, and replacing a large number of grindable parts
(4) minor repair. Generally, it is concted once every 1 ~ 3 months. The main inspection items are to inspect, repair or replace worn parts, such as lining plate of wet ball mill, spoon head of feeder, pinion, coupling and rubber pad, feed pipe, discharge pipe, bearing of motor, etc; Check all fasteners, oil pump and lubrication system, check, clean and change oil; Temporary accident repair and minor adjustment and repair of worn parts
in order to ensure the smooth progress of each planned shutdown inspection, we should make a record of the repair of each equipment, specifically recording the operation of each equipment and the effect after repair. For example, record the replacement times of main bearing, grid plate, lining plate and other easily worn parts, and take these records as the use history of the equipment. In order to predict the service life of components and plan to lay replacement parts (spare parts). The number and time of maintenance can be determined according to the operation of each wet ball mill, and also depends on the wear degree of the most vulnerable parts or the most grindable parts and lining plate. In addition to routine maintenance and inspection, the maintenance of ball mill can be divided into minor repair, medium repair and major repair
reasonable maintenance of the ball mill is an important prerequisite to ensure the high operation rate and long service life of the ball mill. The maintenance of ball mill should be combined with operation and maintenance. The most successful operation is accompanied by the best maintenance plan and maintenance record. It is one of the most important tasks in the proction of the new concentrator to formulate a complete set of maintenance plan and maintenance policy. The thoroughness of the maintenance plan, the seriousness of the position of the maintenance staff and the accuracy of the maintenance plan are obviously reflected in the economic benefits
maintenance of ball mill
common faults, causes and troubleshooting of a ceramic ball mill
ring the operation of ceramic ball mill, it should be noted that the oil temperature of main bearing should not exceed 60 ℃; The motor, voltage, current and sound are kept within 1.5 ~ 2.0 kg / cm2; Check the lubrication of large and small gears, main bearings, recer of classifier and other transmission parts: observe whether the front and rear end covers, cylinder, ore discharge box, overflow groove and sand return groove of classifier are blocked and sand leakage; Change of ore properties, and take corresponding measures according to the situation
start the lubricating oil pump of the ball mill before starting the machine. When the oil pressure reaches 1.5 ~ 2.0 g / min, it is allowed to start the ball mill and start the classifier. Only when everything is working properly can we start feeding. It must be noted that the ball mill can not be operated for a long time without feeding, generally not more than 15 min, so as not to damage the lining plate and consume the steel ball. When parking, first stop the feeder. After the ore in the cylinder of the ball mill is treated, stop the motor of the ball mill. Finally, stop the oil pump. With the help of the lifting device of the classifier, lift the screw out of the sand surface, and then stop the classifier
b startup and shutdown sequence and operation precautions
before starting the ball mill, the following work should be done first: (1) general inspection should be concted for fasteners and driving parts, including the fastening condition of bolts, keys and spoon head of ore feeder 2) Check the oil level, oil circuit connection, instrument and valve opening and closing of the lubricating device 3) Check whether there are sundries that hinder the operation near the ore crusher and the classifier, and whether the raw materials are solidified in the slurry tank under the feeding spoon. Then use the coin basin car to roll the ball mill for a week to loosen the ball milling medium and ore in the cylinder, and check the meshing condition of the ring gear and the pinion, and whether there is any abnormal sound 4) Check electrical equipment, interlocking devices and audio signals
C in order to make the rotation rate of the ball mill high and the ball milling effect good, it is necessary to strictly abide by the operation and maintenance regulations.