Bitcoin preservation

1. The concept of bitcoin 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. Fire coin network, okcoin and coin security network are the three major bitcoin trading platforms in China. Due to the high risk of bitcoin trading, it is recommended to choose carefully for users with immature investment experience

warm tips: the above explanations are for reference only, without any suggestions. There are risks in entering the market, so investment should be cautious. Before making any investment, you should make sure that you fully understand the nature of the investment and the risks involved in the proct. After a detailed understanding and careful evaluation of the proct, you can judge whether to participate in the transaction
response time: January 29, 2021. Please refer to the official website of Ping An Bank for the latest business changes
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2. The full name of the CDC's HIV testing is HIV counseling and testing. It provides counseling and testing for people who have high-risk behaviors or doubts about AIDS. It evaluates high-risk behaviors and answers questions, so as to decide whether HIV testing is needed. The testing includes preliminary screening test and confirmatory test. After the initial screening negative exclusion window period, no further testing is needed, If the initial screening is positive, the AIDS confirmation test should be carried out. If the initial screening is positive, it indicates that the patient has been infected with HIV, and if the initial screening is positive, the infection should be excluded. The process knows that the time required varies from person to person. HIV counseling and testing is free and confidential, which is stipulated by the state.

3. Bitcoin uses a number of technologies, more than one, mainly distributed P2P technology, cryptography technology and so on
it is recommended to search bitcoin white paper for more information.

4. How do you store bitcoin after you buy it? I think this problem is relatively new, because what I buy here is usually to buy a solid-state disk for storage. After all, it is a commodity bought with money. If the storage is not good, the loss will not be worth the gain, and the recovery is very difficult to recover

5. According to the security level, the top is the most secure:
1, offline wallet
2, paper wallet
3, super long keyword brain wallet

6. It depends on your personal investment plan. If you hoard money for a long time, you can download the okex app. The safe wallet in it is sure to be insured. If you trade frequently, it's convenient to put it on the trading platform. In fact, if you don't have much money, it's OK to put it on the exchange. Of course, the premise is a big exchange like okex with guaranteed security.