Is bitcoin dangerous

1. Yes, and it's huge. The amplitude of bitcoin is very large, and it's easy to make big losses. Worse and more dangerous than the A-share market. If the heavy position is high, the consequences will be unimaginable. Other air coins are more difficult to operate in hell
bitcoin is very risky. Although bitcoin can be used for real commodity transactions, there are still many restrictions, so its use value is limited
moreover, bitcoin has certain political and legal risks. If bitcoin is prohibited by law in the future, the money you invest in bitcoin may be wasted
in addition, the security of the platform is also very poor, and there are great risks in the storage and trading of bitcoin. After all, bitcoin only depends on source code to store, so once stolen, it is basically irreparable. Many trading platforms have been attacked by hackers and lost a lot of bitcoin
the quantity of bitcoin is also limited, and it is vulnerable to price fluctuations. Its highly volatile exchange rate just shows its instability. After all, it lacks a strong financial system to support it.

2.

No illegal
in the bitcoin risk notice jointly issued by the people's Bank of China and other five ministries and commissions at the end of 2013, bitcoin is clearly defined as a special Internet commodity, and people can buy and sell it freely at their own risk. But it denies the monetary nature of bitcoin< The Article 143 of the general provisions of the civil law stipulates that "the civil legal act with the following conditions is valid:
(1) the actor has the corresponding capacity for civil conct< (2) the expression of intention is true< (3) it does not violate the mandatory provisions of laws and administrative regulations, public order and good customs. " The announcement of the seven ministries and commissions is neither a law nor an administrative regulation, and can not be used as a legal basis for judging whether a civil juristic act is valid or not; The law does not go back to the past. Therefore, the bitcoin transaction has legal effect, and the bitcoin obtained from the transaction is protected by law. Therefore, legal disputes arising from trading activities, including civil or criminal cases, should be subject to jurisdiction. Courts or public security organs can not refuse to accept bitcoin because they think bitcoin is not protected by law

extended information:

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transaction mode

bitcoin is e-cash similar to e-mail, and both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address. Just like sending and receiving e-mail, the remitter pays bitcoin directly to the other party through a computer or smart phone according to the recipient's address. The following table lists some websites that download bitcoin wallets and addresses for free

a bitcoin address is a string of about 33 characters long, consisting of letters and numbers, always starting with 1 or 3, such as & quot& quot; Bitcoin software can generate address automatically, and it does not need to exchange information online when generating address, so it can be offline [2]. More than 2 bitcoin addresses are available. Figuratively speaking, there are about two grains of sand in the world. If there is an earth in each grain of sand, then the total number of bitcoin addresses far exceeds the number of all the sand on all these "earths"

the bitcoin address and private key appear in pairs, and their relationship is just like the bank card number and password. A bitcoin address is like a bank card number, which records how much bitcoin you have on it. You can generate bitcoin address at will to store bitcoin. When each bitcoin address is generated, a corresponding private key of the address will be generated. This private key proves that you have ownership of the bitcoin at that address. We can simply understand the bitcoin address as the bank card number, and the private key of the address as the password of the corresponding bank card number. Only when you know the bank password can you use the money on the bank card number. Therefore, please keep your address and private key when using bitcoin wallet

after the transaction data of bitcoin is packaged into a "data block" or "block", the transaction is initially confirmed. When a block is linked to a previous block, the transaction is further confirmed. After six block confirmations in a row, the transaction was irreversibly confirmed. Bitcoin P2P stores all transaction history in a "blockchain.". The blockchain continues to extend, and once new blocks are added to the blockchain, they will not be removed. Blockchain is actually a distributed database composed of a group of scattered client nodes and all participants, which is a record of all bitcoin transaction history. Nakamoto predicts that when the amount of data increases, users hope that not all the data will be stored in their own nodes. In order to achieve this goal, he uses the hash function mechanism. In this way, the client will be able to automatically eliminate those parts that it will never use, such as some very early bitcoin transactions

3. It's OK, but it's very difficult. It's a lot of brain work. It's better to play on chips. You can get income by shaking it, and then you can directly exchange it for withdrawal bitcoin. It's simpler

4. The price of bitcoin has gone up abruptly, and the old miners who left the mine have begun to return. Many new people have also poured into the mining instry. However, the price has gone up, and the difficulty of mining bitcoin is also rising. How can we make money from mining now
- - talking about the mining cost of bitcoin -
the first thing to consider is the cost if you want to make money. If the profit is greater than the cost, it is worth doing. We all know how much bitcoin costs, so let's calculate the cost
1. Mining machine cost: the "number" of bitcoin is a problem-solving process, which can't be calculated by human brain alone. Therefore, mining people need to buy mining machines and keep calculating. The more mining machines, the stronger the computing power
2. Electricity charges: mining machines are big consumers of high power. How much electricity does it consume? Let's put it this way. At present, the electricity consumption of bitcoin and Ethereum mining has surpassed Jordan, Iceland, Libya and other small countries, ranking 71st among all countries and regions in the world. You want to cry when electricity is expensive
3. The rent of the place where the mining machine is placed: because the mining machine consumes a lot of electricity, the power supply load of ordinary residential buildings can not be guaranteed at all, so the mining must rent a commercial site separately, and the rent is much more expensive than that of ordinary residential buildings
4. Operation cost: in order to ensure the computing power, the high-power mining machine needs to work 24 hours, which requires someone to maintain it at any time. When the mining machine is in trouble, the cost of hiring someone is required; At the same time, the mining machine is very delicate. If it is too hot or too cold, the vegetables will be stopped. Therefore, the measures of cold air and cold water insulation are needed to help the mining machine run. This is another expense
5. Mining machine update cost: because bitcoin is becoming more and more difficult to dig, the machine that was able to dig a month ago may not be able to dig anything today, and the market will also launch mining machines with greater computing power. The original mining machine is not worth money immediately. If you want to maintain computing power, you need to buy mining machines again
the above bitcoin mining costs all have a marginal effect, that is, the larger the volume is, the lower the corresponding cost will be. Therefore, some super large mines have been built
bitcoin g in the mine will enter the mine pool and be distributed by all participants. Large mines will be built in places where labor and electricity are cheap, such as Venezuela, the legendary miner's paradise, or Iceland, where the climate is favorable and electricity is cheap
as for the cost, everyone will be different. Let's take a look at an average: in 2017, according to the data of elite fixtures, a research institution, Venezuela is the cheapest of 115 mining countries, which is 513 US dollars, while South Korea is the most expensive, which is 26170 us dollars
China's mining cost is US $3172, which is relatively low among 115 countries. However, the cost is an average value. Large mines with low electricity prices must be much lower. If you are a lone ranger, the cost will rise sharply
in a word, if you really want to make money by mining, first of all, unless you are rich enough to build a mine with thousands of machines, you'd better join a mine to dig together. Although you have to share the money, it's still appropriate in the long run because it can greatly rece costs and improve computing power
secondly, whether you dig by yourself or join the mine, you must choose the place with low electricity cost, and the city with abundant hydropower resources is preferred, because hydropower is the cheapest source of power generation in China at present.

5. It's not against the law<
in the notice of the people's Bank of China
Ministry of instry and information technology
China Banking Regulatory Commission
China Securities Regulatory Commission
China Insurance Regulatory Commission on risk prevention of bitcoin (Yin Fa [2013] No. 289), in addition to clarifying the attributes of bitcoin as a network virtual commodity, the notice mainly specifies the following contents:
first, the, It is clearly required that all financial institutions and Payment institutions at this stage shall not carry out business related to bitcoin, price procts or services with bitcoin, buy or sell bitcoin as central counterparties, underwrite insurance business related to bitcoin or include bitcoin into the scope of insurance liability
Second, Internet sites that explicitly require bitcoin registration, trading and other services should be filed with the telecommunications regulatory authorities, and earnestly perform the anti money laundering obligations, identify users' identities, and report suspicious transactions
thirdly, relevant departments, financial institutions and Payment institutions are required to correctly use the concept of money in their daily work, pay attention to strengthening the ecation of the public's knowledge of money, and incorporate the concepts of correct understanding of money, correct treatment of virtual goods and virtual money, rational investment, reasonable control of investment risks, and maintenance of their own property security into the content of financial knowledge popularization activities, To guide the public to establish a correct concept of money and investment
extended information:
the notice requires that at this stage, all financial institutions and Payment institutions shall not price procts or services with bitcoin, buy or sell bitcoin as a central counterparties, underwrite insurance business related to bitcoin or include bitcoin into the scope of insurance liability, and shall not directly or indirectly provide customers with other services related to bitcoin
including bitcoin registration, trading, clearing, settlement and other services for customers; Accept bitcoin or use bitcoin as a payment and settlement tool; Carry out bitcoin and RMB and foreign currency exchange services; Carry out bitcoin storage, custody, mortgage and other services; Issuing financial procts related to bitcoin; Take bitcoin as the investment target of trust, fund, etc
according to the notice, bitcoin Internet sites, as the main trading platform of bitcoin, should be put on record in the telecommunications regulatory agency in accordance with the provisions of the Telecommunications Regulations of the people's Republic of China and the measures for the administration of Internet information services
at the same time, in view of bitcoin's high risk of money laundering and being used by criminals, the circular requires relevant institutions to earnestly perform legal anti money laundering obligations such as customer identification and suspicious transaction report in accordance with the requirements of anti money laundering law of the people's Republic of China, so as to effectively guard against bitcoin related money laundering risks
source of reference materials:
five ministries and commissions including the people's Bank of China and the government of China issued the notice on preventing bitcoin risk
five ministries and commissions including the China securities regulatory network and the central bank issued the notice on preventing bitcoin risk

6. The concept of smart contract can be summarized as:
a piece of code
(smart contract), which is deployed on the shared and copied
ledger
to maintain its own state, control its own assets and respond to the received
external information
or assets. Smart contract, in short, is a set of commitments defined in digital form, including agreements on which contract participants can implement these commitments.

7. It seems that the sale and purchase of virtual currency does not need to write a sale and purchase agreement. Register an account in the digital currency trading platform at home and abroad, carry out real name authentication, bind the bank card and mobile phone number to carry out normal trading activities. Most of the virtual currencies that need to write sales agreements have great risks, and most of them are pyramid selling currency and subscription currency.

8. The biggest risk of playing bitcoin is that it will not eventually become an acceptable means of payment.

9. No, it takes time and energy to dig bitcoin. It's not cost-effective.