How deep should we dig

1.

You can't dig in a day. It takes 2000 years

the global unified computing difficulty of bitcoin is 2621404453 (expected to change in two days). It takes more than 2000 years for a 2.5GHz CPU to work out a bitcoin

in order to make the graphics card fully loaded for a long time, the power consumption will be quite high, and the electricity bill will be higher and higher. Many professional mines at home and abroad are operated in areas with extremely low electricity charges, such as hydropower stations, while more users can only mine at home or in ordinary mines, so the electricity charges are not cheap. Even in a certain residential area in Yunnan, there was a case of crazy mining, which led to a large area trip of the residential area, and the transformer was burned

extended data:

bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system

bitcoin network will automatically adjust the difficulty of mathematical problems, so that the whole network can get a qualified answer about every 10 minutes. Then bitcoin network will generate a certain amount of bitcoin as block reward to reward the person who gets the answer

when bitcoin was born in 2009, block rewards were 50 bitcoins. Ten minutes after its birth, the first 50 bitcoins were generated, and the total amount of money at this time is 50. Then bitcoin grew at a rate of about 50 every 10 minutes. When the total amount reaches 10.5 million (50% of 21 million), the block reward will be halved to 25

when the total amount reaches 15.75 million (5.25 million new output, i.e. 50% of 1050), the block reward will be further halved to 12.5. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to about 21 million

2. Every day, you can find an NPC to send it to the mine cave for half an hour. You can get black iron ore by mining, and you also have a chance to trigger the boss of the mine cave! But the deeper the mine is, the more dangerous it is. Please be more careful
after entering the mine cave, you can find a wall and click a mining button beside the shortcut skills bar. If you click Yes, it will automatically mine
in the process of mining, not only the black iron ore but also the slag can be found, and the slag can be exchanged for black iron ore by NPC
comments: mining is a good way to get black iron ore, you can dig in your spare time!

3. Hello, you can log in to the 360 security payment center and recharge 360 coins inside.

4. Many people used to use the so-called "official" wallet software maintained by the bitcoin Foundation: bitcoin QT (now called bitcoin core). The most authentic wallet software should have the highest security, but its biggest disadvantage (of course, its advantage) is that it needs to download the whole blockchain data, which has reached 20g and is increasing every day. For ordinary users, using bitcoin QT not only consumes a lot of disk space, but also needs to wait a long time to complete synchronization when opening the wallet software

now, even the official website of bitcoin.org recommends ordinary users to use multibit, a lightweight wallet software. It doesn't need to download all the blockchain data to use it. It's very lightweight, like "second synchronization". However, many people question the security and reliability of multibit, especially after coindesk reported the loss of bitcoin recently (I think this problem is probably e to the damage of data files in users' wallets)

how to evaluate the security of bitcoin wallet

so, how about the security of multibit? We can evaluate the security of this bitcoin wallet software from the following aspects - these principles also apply to the selection of other bitcoin wallets:

is the software open source? Multibit software belongs to open source software. Because of its code transparency, open source software is easier to find problems and avoid designers setting backdoors

are developers trustworthy? Although people are the most untrustworthy, if developers are willing to open their identities and enjoy a good reputation, it can increase the credibility of the developed software. Multibit developers are real people

is the downloaded software the version of the original developer? If the download website is hacked, the downloaded software will have problems. At this point, the software downloaded from multibit official website can directly verify the digital signature, which can ensure that the software has not been modified by a third party (so it is not recommended to download through other websites)

is the private key of the bitcoin address saved locally in the client? The world of bitcoin is "private key is everything". If the private key is kept by a remote server, it is difficult to say that it has sufficient security. All the private keys of multibit are stored on the local computer, so the security is guaranteed

does the wallet file support password protection and encryption? If you don't support encryption and password setting, then the wallet is almost insecure. Multibit wallets are now fully supported. It must be pointed out that before 0.5.9, multibit did not support wallet file encryption, so its security is poor - which is also a worry for many people.

5. This is a research report document. It has no legal efficiency. It's just a suggestion
the inaugural meeting of China's blockchain technology and Instry Development Forum and the first developers' conference were held on October 18, and the white paper on China's blockchain technology and application development was released
the white paper summarizes the development status and trend of blockchain at home and abroad, analyzes the technology application of multiple application scenarios including finance, supply chain, culture and entertainment, intelligent manufacturing, social welfare, ecation and employment, and points out the core technology path of blockchain and the direction and process of blockchain Technology standardization in the future In theory, the application scope of blockchain is very wide, but now the blockchain is still in a primary stage of development. Ethereum is an intelligent contract platform; Decent is a distributed content publishing platform.

6.

1. The father of bitcoin is Nakamoto, which is a smart person by name

2. Now this technology is popular, and many financial companies are doing it. Even mobile phones are doing it

3. Please see the following

7. Before trench excavation, use measuring instruments to measure the average elevation within the excavation area. At this time, carry out plane positioning first, and then calculate the average elevation. After the preparatory work is finished, you can use the design drawings to calculate. Generally, as long as you calculate the original landform elevation, you can calculate the excavation height well. Here are two elevations: the original ground elevation, the design elevation, and the design elevation, The former is obtained through actual calculation, while the latter is expressed clearly in drawings

8. Is this the right question to ask? There is a formula to calculate the mining difficulty of flow ore. The difficulty is open and transparent. As we all know, the more rare things are, the more valuable they are. The difficulty increases with the more ore excavated, which can make the ore have the function of preserving value. This is more advantageous than disadvantageous to the ore trading market.. Therefore, the difficulty of which mine the owner asked is different from each other. I can only choose one answer.

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