Today's blockchain market plummeted on July 21

By midday, bitcoin had fallen to around $10700. Bitcoin's previous attempt to break through $12000 failed, and yesterday's downward trend continues to this day. As a result, the cryptocurrency market fell, with 90 of the top 100 currencies falling

in the past 24 hours, according to the okex platform, the net outflow amount of bitcoin reached 638 million yuan, and according to the currency security data, the net outflow amount of bitcoin reached 152 million yuan. Although the capital outflow in the past 24 hours is relatively large, it has decreased compared with yesterday's capital outflow, and bitcoin has hit the bottom of US $10600 for many times in the past 24 hours. However, in terms of trading volume, there is strong support in this position. After that, we still need to observe the withdrawal of funds, so as to confirm whether the market goes up or continues to fall below the down. In fact, the so-called "bear market" in the currency circle is more popular than the "three o'clock community" before. In my opinion, I basically dare to assert that there are makers in the currency circle who have successfully harvested a batch of "leeks" by using some financial means or big men. This view may sound like "conspiracy theory" to many people, But I have to admit that speculators are everywhere in the coin circle. Zhu Xiaohu's warning that "I hope you don't stay in history because you reap leeks to earn money with blood" also has a certain basis in my opinion

the craziest time was in December 2017, when bitcoin reached more than 100000 yuan. Before that, people who invested in bitcoin could make a fortune overnight. At the end of 2017, the price dropped to below 40000 yuan, and there was also a correction in 2018

there are two ways to invest in bitcoin

one is to buy bitcoin directly and wait for it to rise, that is, simply buy it low and sell it high. Judging from the historical data and the popularity of blockchain, there is still a lot of room for bitcoin to rise, but the cost of this investment method is relatively low, and the price of bitcoin fluctuates too much, so although the income of buying bitcoin directly is high, But the risk is also great

the other is to "dig" bitcoin with professional equipment. The total amount of bitcoin is 21 million. mining is the only way to get bitcoin, that is, through a professional computer, which is called mining machine in the instry, to get bitcoin through a lot of calculation, and then sell bitcoin to get income. At present, the price of a mining machine is about 10000, Another problem is the cost of electricity. This kind of equipment consumes a lot of power and needs 24-hour uninterrupted operation, so after a long time, the electricity cost is not a small cost

at present, there are many people engaged in mining, mostly in the form of mines, finding cheap electricity for centralized mining to rece costs

every day will generate income, the highest is more than 200. In addition, the fluctuation of the currency price has little impact on the mining, because the bitcoin can be sold at any price. Even if the price of the coin is low, it can be sold after the price rises. Therefore, the investment income is relatively stable, the risk is relatively low, and the current machine price is also low, There is no threshold for investment, so it is a good opportunity for investment

compared with self built mines, it has certain advantages to invest in mining machinery trusteeship business. Firstly, the time cost is saved to a certain extent, and the mining business can be started immediately. Secondly, unnecessary expenses, such as labor cost, are saved. Since the custody business concentrates the mining machines of multiple investors in one mine, the labor cost is shared by all investors. Finally, there are cheaper electricity prices. The ultimate goal of hosting enterprises to carry out mining machinery hosting business is to make profits. If they can not get lower than the normal electricity price on the market, it is difficult for hosting enterprises to make profits. Of course, the electricity price given to investors will also be lower than the normal electricity price on the market. Another important advantage is that some trusteeship enterprises are able to cash the virtual currency g up by investors' mining machines directly, which also relieves some investors from the worry that they can't cash the virtual currency

is mining profitable or not? There are several factors affecting the mining income: first, the currency price. The higher the currency price, the more profitable the mining. The second is the difficulty. The slower the difficulty rises, the more profitable the mining will be. The lower the cost, the more profitable the mining. Of course, the cost here refers to the purchasing cost and operating cost of computing power, including labor, network, construction, electricity and so on. The lower the cost, the better. Mining needs to deal with the risk of currency price plummeting, mining difficulty soaring, and mining costs rising. At present, the risk of mining currency speculation is much smaller

now the currency price continues to fall. Some people say that it's better to buy money directly than to buy a miner. In fact, it's not the case. Buying money must bear the risk of currency price falling, and the risk and income coexist, while buying a miner is to "protect the income from drought and flood" and keep the value of money rising; In the absence of rich market experience, the decision to buy money is only the choice of speculators

It should be noted that the fire of bitcoin has made many counterfeit coins spring up like mushrooms. Without technical knowledge, the stability of counterfeit coins can not be recognized, so we need to be extra careful; More importantly, many pyramid schemes and scams are disguised as "virtual currency". We must be careful to identify them and avoid being cheated