Abnormal login account of bitcoin blockchain

1. This is the order of importance: BTC private key, wallet security password, BTC address
the private key is everything and must not be told to anyone
as long as there is a private key, you can re import the wallet and reset the wallet security password
a BTC account can have many addresses, so the least important one is the address. No matter how unimportant, you can't just tell others.

2. Here we need to mention that the basic system structure of blockchain includes the following
① network routing ② cryptographic algorithm ③ script system ③ consensus mechanism
the security problem of blockchain is mainly the script system completed by script system, which is an abstract concept and an extremely important function in blockchain technology, The reason why a valuable network can be formed depends on the script system, which is driven like an engine and continuously sends and receives data. The so-called script refers to the program of some systems in the rule reconfirmation system, and the rules are fixed. For example, in the bitcoin system, only bitcoin can be sent and received, The system allows users to edit the program rules by themselves, and then they can deploy them to the blockchain ledger. In this way, the functions of the whole blockchain system can be expanded. For example, Ethereum realizes the function of smart contract through this set of custom script system, Then specific scenario applications or real life cases, such as order logistics information and supply chain information.

3.

If bitcoin accounts are decentralized, so are hackers. Bitcoin, which uses blockchain technology, is not more secure than bank accounts. On the contrary, it is vulnerable to hackers. So, in the world of virtual currency, how to protect the security of account funds

Secret your private key address

the bitcoin address is the only information needed to define the distribution and transmission end of bitcoin. These addresses are generated anonymously by the user's wallet. Once the address is used, all the transaction history related to it will destroy the confidentiality of the address. Anyone can view the balance and all transactions at any address. Because users usually need to disclose their identity in order to receive services or goods, the bitcoin address cannot be completely anonymous. For these reasons, it is better to use bitcoin address only once, and users must be careful not to disclose the address

When replacing the computer, try to destroy the hard disk of the original computer. Don't save or publish the private key of bitcoin to the cloud, mailbox or collection. If a network administrator writes a regular expression to retrieve the text, he can find all the information and crack the user's account

2. Stored in bitcoin wallet

many bitcoin exchanges have been attacked by hackers. If you use the wallet of bitcoin exchange, please use Google's "double authentication" to ensure security. During the development of virtual currency, there have been many cases of bitcoin exchange running away. The exchange owns the private key of the user's wallet, which is not a safe way to save bitcoin

bitcoin wallet has a wide range of customers, which is more secure than the wallet service of bitcoin exchange. No matter what kind of wallet you choose, you should choose a strong password. Don't use the same password as the registered email. At the same time, do not put eggs in the same basket, choose multiple storage ways to improve the security of assets

using the genuine system of bitcoin wallet, regularly updating security vulnerabilities and fixing bugs can improve security. Some studies have pointed out that IOS system is more secure than Android system, because the existing security vulnerabilities of Android system may be relatively easy to be attacked by hackers

3. The most common way to identify phishing sites is phishing sites. Hackers will create a domain name similar to bitcoin website, which may be sent to users through e-mail and other channels. Once users try to log on the website, hackers will record their login information

so be careful before clicking any link. Many browsers have the service of "phishing check". If you carefully identify the domain name of the website, you can identify the phishing website

4. Guard against Keylogger

in addition to phishing sites, the common attack method of hackers is Keylogger. Keyboarding is the easiest way to capture passwords. The deception of key recording software is very high, even the technical house may believe it. In short, a keyboard recorder is actually a script code. Once it is installed on the operating system of the target computer, it will record all the keystrokes on the keyboard and send them to hackers, mostly through FTP

the successful method of introcing Keylogger depends on many factors, including the operating system, the lifetime of keylogger and the anti infection level of target computer. Keyboard recorder is usually injected through web browser. The security vulnerability of the target machine depends on the type of browser it uses; Whether the operating system installed on the target machine is genuine, and whether the operating system is updated with the latest security vulnerabilities and bug fixes

5. Watch out for USB theft program

the software will retrieve your password and login credentials stored in the browser. Once FUD, some stealing programs can be very powerful. In most cases, a steal program is a. Bat file, which can be injected into the target machine online or driven by USB

6. Using proxy and VPN

proxy server and VPN can increase the security of your bitcoin wallet, although most people mistakenly believe that VPN makes them anonymous online. But in fact, VPN only improves the privacy of users. VPN can rece the possibility of hackers accessing the router to open the port, which also means that they are less likely to succeed

7. Encryption and backup wallet

wallet backup is essential to prevent losses caused by computer failure or human error. If a computer or mobile phone is lost, a backup wallet can help retrieve the bitcoin. At the same time to encrypt the online backup, any backup that can be accessed through the Internet should be encrypted

how to back up your wallet? First, close the bitcoin client, then select the backup wallet of the menu file in the main interface, and the wallet.dat file to other hard disk partition, mobile hard disk or U disk

it should be noted that the entire wallet should be backed up, not just the private key. Bitcoin wallet has many private keys for receiving transaction change. If only the private keys of visible bitcoin addresses are backed up, most of the funds may not be restored from the backup. Also, back up your wallet regularly to make sure that all recent bitcoin change addresses and newly created bitcoin addresses are included in the backup

Cold storage

offline wallet is called "cold storage", which is the safest way to save digital currency

cold storage is an offline wallet that is not connected to the network, that is, it will not be attacked by black horse and Trojan horse. However, because the operation is relatively complex and the price is relatively expensive, the price of offline wallet is more than 1000 yuan, which is suitable for users who have a lot of bitcoin and are ready to hold it for a long time

although the operation of cold storage is relatively complex, it is the safest storage method. At present, only cold storage has truly realized the inviolability of personal assets and is not subject to the supervision of others

if you want to know more about bitcoin information, please send me a private message and avoid detours

4. 1. The value of bitcoin does not lie in its computing method and encryption algorithm. 2. The calculation and proction of bitcoin need time, equipment loss and electricity cost. 3. The total output of the algorithm is limited. 4. Some foreign and domestic objects have supported bitcoin payment, which makes it have the preliminary property of currency. 5. There is no difference between bitcoin and the legal currency of any country in its own value. A piece of printed paper or PVC does not have actual value. It can not have the characteristics of rare metals like gold. 6. The biggest risk of bitcoin is that no country, bank, military or government can guarantee its credibility. 7. At present, it seems to be just a virtual currency with speculation value. 8. Its circulation value is certainly not as popular as q-coin in China. For example, few people in second tier cities know about bitcoin, let alone let it admit its value.

5.

Let's talk about why we are not afraid of deception, because every mine or mining must have a leader, right? So you will be given the appropriate currency every day when you sign in or answer questions. For example, if you sign in, you will get 0.4 answers and you will get 0.08 answers. Generally, they will increase the value of currency. If you have two handsets or one mobile phone, you can download and register two mobile phones every day, which is about 1 Ordinary fake mining with indivial coin usually costs about 10 yuan or more, so now I'm going to analyze why you're not afraid of his scam

< UL >

you can start with the coin every day, generally you can sell yourself with an active value. If you sell a coin in three days, it's about 10 yuan. If you sell two mobile phones, it's more than 20 yuan in three days, that's 7 yuan in a day, and there are so many scams You can add a few more mining areas, right? Anyway, sell them in time. Do you still care if they are harvested

it's a scam that I've worked hard to develop for a long time. As a result, I just have a big income and the platform has run away, so it can't be generalized. It depends on how you judge it.

if it's all such scams, I like them very much, because I have three mobile phones and 10 such platforms a day. It's 70 yuan a day. Anyway, it doesn't take much time. In fact, it depends on you How to deal with my group, you can roll it together

(Liu Jiuliu's meaning) of course, Xiao still has to identify the feasibility of some

< / UL > by himself

6. Detailed process of mining right price evaluation
1. Copy of the business license (plicate) of the mining enterprise of the evaluation client*
2. The of the mining license * or the approval document for delimiting the scope of the mining area, and the map of the mining area based on the topographic and geological map or geological map and demarcated by rectangular coordinates*
3. Reserve verification report, reserve review record certificate, *
4. Development and utilization scheme / (pre) feasibility study report / preliminary design and its review opinions or approval documents*
5. A complete set of financial statements for the three years before the base date of evaluation, at least providing the statistical table of output and sales price of mineral procts, sales revenue, cost of fixed assets and current assets and other major technical and economic indicators*
6. Basic information of the mine (including the nature of the enterprise, technical personnel, staff, registered capital, historical evolution, evolution of subordinate relationship, acquisition method, time and change of mining right, evaluation purpose and related process of mining right, proction and operation, etc.)
7. Information on the previous evaluation and price disposal of mining rights, including copies of previous evaluation reports, confirmation or filing documents of evaluation results, and documents on price disposal of mining rights (contracts or agreements and payment vouchers)
8. The plan of the nearest roadway project and the plan of reserves of the mine; 9. Copies of the annual mineral proct settlement sheet (main batch) or sales contract or sales invoice on the base date of evaluation
10. Traffic location map of the mining area, comprehensive geological and mineral plan (topographic and geological map indicating the scope of the mining area), reserve calculation map, typical profile of main ore body (exploration line profile), development system plan diagram and mining and beneficiation process flow chart
11. The mining volume of the mine from the deadline of reserves calculated in the geological exploration report / reserves verification report to the base date of evaluation. The appraisal of mineral rights can be divided into three stages, namely, the entrusted appraisal stage, the appraisal stage and the appraisal result confirmation or filing stage
first, the stage of entrusted evaluation. In this stage, the evaluation client and the evaluation institution are the leading ones< The appraisal client and the appraisal trustee can be people with different appraisal purposes, mainly including the administrative authority of the mining right that intends to transfer the mining right, the applicant of the mining right that intends to apply for registration of the mining right, the mining right that intends to transfer the mining right, the transferee of the mining right that intends to transfer the mining right, and the creditor when setting the mortgage of the mining right, Mining right holders who plan to restructure or go public. Generally speaking, anyone can entrust the appraisal of mining right, but if the appraisal result is used as the basis for collecting the price of mining right when the mining right is transferred, the administrative organ that transfers the mining right must be the appraisal principal; If it is necessary to apply for confirmation or filing for the purpose of transferring the mining right of the state funded exploration of the mining origin, the mining right owner must be the evaluation client. In short, there are only the right holders (the administrative organ of mining right transfer and the right holder) who have the right to dispose of the mining right of the proved ore procing area, so the evaluation must be entrusted by the right holders. In addition, it is their own right and choice for the relevant person to entrust to evaluate the mining right, but the follow-up procere will be different from the former
2. Entrustment and entrustment are service economic and legal relations established through the contract signed by both parties or the power of attorney issued by the client. When dealing with the entrusted matters, the client should explain the purpose, object, scope, ownership and investment nature of the entrusted appraisal. The appraisal institution should also explain the relevant provisions of mining right appraisal to the client, ask relevant questions and remind relevant matters. When both parties reach an agreement on the entrustment matters, they can sign the entrustment contract for mining right evaluation, or the entrustment party can issue the entrustment letter. The entrustment contract of mining right appraisal should comply with the general provisions of the contract law of the people's Republic of China. In the contract of entrustment for appraisal, the appraisal object, appraisal scope, appraisal purpose, required items, completion time, appraisal base date, rights, obligations and commitments of both parties, legal responsibilities, etc. shall be specified
Second, the evaluation stage is dominated by the evaluation institution. The main work of this stage is as follows:
(1) the mining right appraisal organization accepting the entrustment should form an appraisal working group to determine a mining right appraiser as the project leader, and the professional composition of the members of the appraisal working group should be suitable for the characteristics of the appraisal object and the appraisal method. The evaluation team went to the client's place for the following preparatory work: (1) listen to the client's detailed introction of the evaluation object, including the registration and change history of the evaluation object, the historical evolution of geological work, and understand the working time, working unit, nature of work, exploration results obtained, nature of investment, amount of investment, etc. It also includes the exploration and mining activities around the assessment object and the relationship with the assessment object 2) We will go to the scene to investigate the situation of mining rights, understand the topography and mining activities, sample some exploration projects, and inspect mining and mineral processing facilities 3) Investigate and collect the market transaction and market price of local mineral procts 4) Draw up evaluation ideas or technical routes and determine evaluation methods. Collect documents, data and drawings related to the assessment 5) Summarize and sort out the data
(2) the appraisers shall exchange opinions with the client on the first draft of the appraisal report and make necessary adjustments, modifications or supplements. After the final draft, submit the formal evaluation report to the client. The necessary information provided by the client includes: assignment evaluation: the area and geographical coordinates of the exploration area or the opinion on delimiting the mining area; Transfer evaluation: exploration license, or mining license, the supporting documents that can explain the nature of exploration investment; Geological reports and maps of each stage; Relevant documents proving the resources / reserves within the scope of exploration license or mining license; Mine enterprise registration, statistics and reported reserves change report. The main data collected by the appraisal institution include: the development and utilization plan of mineral resources or (pre) feasibility study report or preliminary design and relevant approval documents; Mineral processing process and proct plan; Statistical report of actual indicators such as mining recovery rate, ore dilution rate, beneficiation recovery rate, concentrate yield, etc; Statistical report on recovery of associated and symbiotic ores, etc< According to the three regulations of the State Council on the management of mining rights and the provisions of relevant documents of the State Council, the appraisal results of the mining rights formed by state funded exploration, whether the appraisal is transfer or transfer, must be confirmed or filed by the Department in charge of Geology and mineral resources of the State Council. Therefore, the confirmation and filing stage of the evaluation results only corresponds to the broken property rights formed by the state funded exploration; It is a necessary procere and is evaluated by the obligee as the client. In addition, according to the Interim Provisions of the Ministry of land and resources on the administration of the transfer of mining rights, no matter what the nature of the original investment is, the administrative organs of mining rights need to evaluate and confirm or record the evaluation results< (1) the three regulations of the State Council on the management of mining rights have explicitly authorized the Department in charge of Geology and mineral resources of the State Council to confirm the evaluation results of mining rights funded by the state, that is, the Ministry of land and resources. The confirmation of mining right evaluation results can be divided into two forms: direct confirmation by the Ministry of land and resources and entrusted confirmation. The Ministry of land and resources confirmed that the mining right issued by the Ministry of land and resources, the mining right stocks listed, and the proction scale of large and medium-sized enterprises transferred in the form of bidding. Entrustment confirmation: other mining right appraisal and confirmation work other than that confirmed by the Ministry of land and resources shall be entrusted to the mining right administrative organs of all provinces, autonomous regions and municipalities directly under the central government. After confirmation, the mining right administrative organs of all provinces, autonomous regions and municipalities directly under the central government shall fill in the letter of responsibility and submit it to the Ministry of land and resources together with the appraisal report. The Ministry of land and resources shall uniformly number, seal and issue the confirmation letter
(2) according to the three regulations of the State Council on the management of mining rights and the relevant documents of the State Council, the evaluation results of the mining rights formed by state funded exploration, whether it is transfer evaluation or transfer evaluation, must be filed by the Department in charge of Geology and mineral resources of the State Council
1. The Ministry of land and resources records the evaluation report of exploration rights according to the proceres of verification, filing and filing
1) according to Article 14 of the Interim Measures for the administration of the evaluation of exploration rights and mining rights and the requirements of the guidelines for the evaluation of mining rights on the format of the evaluation report of mining rights, the staff responsible for the verification and filing of the evaluation report of exploration rights shall carry out the verification. The specific verification contents include: (1) whether the evaluation report is within the scope of filing. The appraisal report of mineral exploration right transfer within the scope of filing must be: the appraisal is entrusted by the organ of mineral exploration right transfer (the valid certificate is the appraisal power of attorney of the organ of mineral exploration right transfer or the appraisal power of attorney contract of both parties); The appraisal object is the mineral land that has been invested and explored by the state (according to the announcement of the Ministry of land and resources on the mineral land that has been invested and explored by the state). The nature of exploration funds is contributed by the State Finance (Geological Exploration fee, resource compensation fee and special fund) The effective proof document is the mission statement of exploration project. For the newly registered exploration right after the State Council Order No. 240 was issued in 1998, whether the price of exploration right was charged or not at the time of transfer depends on the nature of the exploration fund after this registration, and whether it is within the scope of filing or not, rather than retrospecting the nature of the investment of exploration work before registration. For the exploration rights acquired before February 12, 1998 and extended up to now, it depends on the nature of exploration funds in the whole exploration history.) 2) (3) check whether the format and attachments of the evaluation report are complete and standardized. Whether the evaluation object is an effective exploration right. No problem is found in the above verification, and the next procere will be carried out. In case of any problems found in the above verification, the applicant for record shall be informed in writing, and the evaluation report shall be returned to the applicant for record. The filing applicant shall apply for filing again after solving the problem. If the re verification has met the requirements, enter the next procere
2) the staff responsible for the filing of the evaluation report of exploration right will submit the verified evaluation report together with the approval form for the filing of the evaluation result of exploration right to the director, who will make a decision on whether to approve the filing after review. If the record is approved, the "record verification certificate of prospecting right evaluation report" shall be issued to the record applicant. If the record is not approved, the reasons shall be explained to the applicant in writing, and the evaluation report and relevant documents shall be returned
3) filing: the evaluation reports approved for filing are registered and filed for future reference
2. Evaluation of exploration rights other than those recorded by the Ministry of Geology and mineral resources of provinces, autonomous regions and municipalities directly under the central government.

7. The main way to solve the problem of expanding bitcoin blockchain is to expand its capacity, which is also the main reason for the divergence of bitcoin recently. The number of bitcoin network transmission has increased greatly, which leads to the transmission congestion of bitcoin network to a certain extent. In order to solve this problem, Gavin andresson, the core developer of bitcoin, proposed to expand the block to a maximum of 20m. At present, there is a big controversy in the global bitcoin instry. China's pool proction blocks account for about 43% of the world's total. Some international discussants support Gavin andresson's point of view, but it is bound to cause certain harm to China's mines. In the community discussion, some radical foreign discussants believed that without considering the broadband situation in China, if Chinese miners could not complete the mining task, they could continue the bitcoin business without Chinese people. However, as far as the actual situation is concerned, almost half of the proction links of bitcoin are distributed in China. Therefore, China has an important say in issues related to bitcoin infrastructure, especially in the field of mining. At present, several major mines in China have clearly expressed their opposition to the expansion plan of bitcoin.

9. Market method, cost method and income method are three kinds of mining right evaluation methods, including replacement cost method, discounted cash flow method, equivalent investment sharing method, geological factor evaluation method, joint risk exploration agreement method, etc
mining right refers to the right that the mining right holder is given to carry out a series of activities such as exploration, development and mining of mineral resources, including exploration right and mining right
exploration right refers to the right to explore mineral resources within the scope and time limit specified in the exploration license obtained according to law. The legal document of exploration right is exploration license, and its economic significance lies in: (1) transfer the exploration right according to law to obtain income
(2) obtain geological data of mineral resources through exploration work, recover exploration investment and obtain income through transferring geological exploration report
(3) as the exploration right holder has the priority to obtain the mining right, after the exploration right holder has the priority to obtain the mining right and becomes the mining right holder, he can further invest capital and technology to carry out mining, so as to obtain greater investment income
mining right refers to the right of the mining right holder to exploit mineral resources within the scope and time limit specified in the mining right license obtained in accordance with the law. The legal document of mining right is the license of mining right. Its economic significance lies in that it can mine mineral resources within the specified scope and period and obtain excess return on investment. It is a kind of franchise within a certain scope and period
market method, cost method and income method are three kinds of mining right evaluation methods, including replacement cost method, discounted cash flow method, equivalent investment sharing method, geological factor evaluation method, joint risk exploration agreement method, etc
mining right is an asset and an economic resource. The so-called assets are defined in accounting as the economic resources owned or controlled by an enterprise, which can be measured in currency and provide future economic benefits for the enterprise. According to the form of existence, assets are divided into tangible assets and intangible assets. Tangible assets refer to those assets with physical form, including fixed assets, current assets, long-term investment, other assets, etc; Intangible assets refer to those assets which are controlled by specific subjects and do not have independent entities, but play a long-term role in proction and operation and have profitability, including patent right, trademark right, non patented technology, land use right, goodwill, etc
the appraisal of mining right refers to the appraisal of the value of exploration right and mining right assets legally transferred in the mining right market by professional institutions and personnel in accordance with national laws and regulations and asset appraisal criteria, according to specific purposes, following appraisal principles and relevant proceres, selecting appropriate value types and using scientific methods, It is the scientific evaluation and estimation of mining right assets in the form of currency in the economic activities of the mining right market. Its essence is to judge the intrinsic or potential value of the mining right (expressed as the use value of exchange value, that is, the market value). It is an estimate of the market value of the mining right based on the mineral geological information and market information, and on the basis of multi factor analysis of the present and future market
according to the definition of mining right evaluation, mining right evaluation includes eight main elements: subject, object, basis, purpose, principle, procere, value type and method< br />