Bitcoin source code bug

1. Sorry
you can't modify this
because this source code records the development process of bitcoin along the way, the problems encountered in the mining process and the mining difficulty
there is open source code to mine, so no one can change it

2. Bitcoin is an electronic currency proced by open source P2P software. digital currency is a kind of network virtual currency. Bitcoin is also paraphrased as "bitcoin.". Short for: BTC
bitcoin does not rely on specific currency institutions to issue. It is generated through a large number of calculations of specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction
bitcoin is very similar to cash
the advantages of bitcoin are: no freezing, no tracking, no taxes, and extremely low transaction costs. Compared with people who speculate in currency, it is wealth, and people outside the currency circle may think it is a fraud
bitcoin is a relatively mainstream digital currency, which can be properly invested. There are risks in the transaction. You can invest cautiously. You can search the fire coin, coin security, OK, dobby trading platforms on the Internet, which can trade bitcoin. These are relatively large trading platforms. Invest in mainstream digital currency, do not invest in counterfeit currency or air currency.

3. In recent years, blockchain digital assets represented by bitcoin have become popular all over the world. Financial institutions, technology companies, investment companies and other participants at home and abroad have invested a lot of human, material and technical resources in the research, development, design, testing and promotion of blockchain digital assets. In order to realize the main characteristics of "four can and three can't" of blockchain digital assets, we can build the core technology system of digital assets by relying on 11 technologies of security technology, transaction technology and trusted guarantee technology. First of all, security technology is used to ensure the fluidity, storability, controllable anonymity, unforgeability, non repeatable transaction and non repudiation of blockchain digital assets. Digital currency security technology mainly includes basic security technology, data security technology and transaction security technology. Basic security technology includes encryption and decryption technology and security chip technology. Encryption and decryption technology is mainly used in currency generation, secret transmission, identity verification and other aspects of digital assets. The establishment of a perfect encryption and decryption algorithm system is the core and foundation of the digital assets system, which needs to be customized and designed by the national password management organization. Security chip technology is mainly divided into terminal security mole technology and smart card chip technology. Digital assets can be traded in the form of mobile terminal based on terminal security mole. As the carrier of secure storage and encryption and decryption operation, terminal security mole can provide effective basic security protection for digital assets. Digital asset system trading platform blockchain technology research and development of data security technology, including data security transmission technology and secure storage technology. Data security transmission technology transmits digital asset information through ciphertext + MAC / ciphertext + hash to ensure the confidentiality, security and non tamperability of data information; Data security storage technology stores digital currency information by means of encryption storage, access control, security monitoring, etc., to ensure the integrity, confidentiality and controllability of data information
transaction security technology includes anonymous technology, identity authentication technology, anti plicate transaction technology and anti-counterfeiting technology. Anonymity technology realizes controllable anonymity of digital assets through blind signature (including blind parameter signature, weak blind signature, strong blind signature, etc.) and zero knowledge proof; The identity authentication technology verifies the user's identity through the authentication center to ensure the validity of the digital asset trader's identity; The anti plicate transaction technology ensures that digital assets are not reused by means of digital signature, serial number and time stamp; Anti counterfeiting technology ensures the authenticity of digital assets and transactions by means of encryption and decryption, digital signature and identity authentication. Secondly, the online transaction and offline transaction of digital assets are realized by transaction technology. Digital asset trading technology mainly includes online trading technology and offline trading technology. As a legal currency, digital assets should not be rejected by any unit or indivial, and can be traded online or offline. Online transaction technology realizes online transaction of digital assets through online device interaction technology, online data transmission technology and online transaction processing; The off-line transaction technology realizes the off-line transaction of digital assets through the off-line device interaction technology, off-line data transmission technology and off-line transaction processing technology. Finally, trusted guarantee technology is used to provide a safe and reliable application environment for the issuance, circulation and transaction of digital assets in blockchain. Digital asset trustworthiness assurance technology mainly refers to trusted service management technology. Based on trusted service management platform (TSM), it ensures the security and trustworthiness of digital asset security mole and application data, and provides security chip (SE) and application life cycle management function for digital asset participants. Trusted service management technology can provide application registration, application download, security authentication, authentication management, security evaluation, trusted loading and other services for digital assets, which can effectively ensure the security and credibility of digital assets system
what is blockchain? Blockchain technology, also known as distributed ledger technology, is an Internet database technology, which is characterized by decentralization, openness and transparency, so that everyone can participate in database records. Blockchain technology development blockchain technology development what is a blockchain system? Blockchain system is a database system with integrity. The data written into the system will be automatically copied to the nodes of the blockchain, which can achieve transactional data preservation, support the management and development of databases in various instries, and be proced in combination with various needs. 294.497 billion US dollars, or 2.60%. This week, five new projects entered the top 100, namely FST, ZB, Wix, wax and MXM. On August 11, the price of bitcoin was $11523.58, up 3.20% from last week, and Ethereum was $216.09, down 3.86% from last week. The 24-hour turnover of this week increased by 2.63% over the same period last week; Among the top 100 projects, the total market value and average market value of currency projects increased significantly, and the classification composition of global blockchain assets top 100 projects was stable.

4. And this: https://github.com/bitcoin/bitcoin

5. Bitcoin is a kind of virtual currency in the form of P2P. Point to point transmission means a decentralized payment system. Bitcoin does not rely on specific currency institutions to issue. It is generated through a large number of calculations of specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole
P2P network to confirm and record all transactions
bitcoin trading is carried out through bitcoin trading platform. At present, the better bitcoin trading platforms in China are okcoin, bitcoin China, fire coin network, 796 trading network, etc. the capital of each company is different. Okcoin is based on technology, and fire coin network pays more attention to user experience, But in terms of professionalism, okcoin is relatively good.

6. You said that is the encryption digital currency, the source code son in the open source website may inquire. You can also go to the official website of bitcoin foundation to find the source code of bitcoin

network virtual currency can be roughly divided into
the first category is familiar game currency. In the era of stand-alone games, the protagonist accumulates money by knocking down the enemy, entering the gambling house to win money, and using these to buy Herbs and equipment, but it can only be used in his own game console. At that time, there was no "market" between players. Since the establishment of Internet portal and community, the realization of game networking, virtual currency has a "financial market", players can trade game currency
the second type is the special currency issued by the portal website or instant messaging service provider, which is used to purchase the services in the website. The most widely used is Tencent's q-coin, which can be used to purchase membership, QQ show and other value-added services
the third kind of virtual currency on the Internet, such as bitcoin (BTC), Fuyuan coin (FTC), Wright currency (LTC), etc. bitcoin is an electronic currency proced by open-source P2P software. Some people also translate bitcoin as "bitcoin", which is a kind of network virtual currency. It is mainly used for Internet financial investment, and can also be directly used in daily life as a new currency.

7. Generally, you can check the currency market in real time through various apps. I'm using a coinbox. You can try to search it. If you have any questions, you can continue to ask,

8. As in previous years, 2015 will soon slip out of our hands. For the participants and followers of mobile health, this year is different from previous years. From the noisy year to the end of the year, there are too many events and experiences worth recording
2014 is the first year of mobile medical, because many people have just heard of this word or just moved their mind to try the water in this year
in 2015, heroes from all walks of life changed from heart to action, trying to open the door of medical st with their best posture. No matter landing smoothly or falling somersault, we all have a hard heart
I had the honor to visit nearly 30 start-up companies on the platform of Unicorn studio in one year, talked about nearly 100 investors and entrepreneurs, researched more than 100 start-up projects, and couldn't help but want to make a comprehensive year-end summary of mobile health
mobile medicine in 2015 is too colorful. Those who come to the competition, bet on the track, watch the excitement or splash cold water can find their favorite plot and draw their own preset conclusions. If you want to show the year of mobile medical in a few simple words, it will inevitably offend a large number of audiences. I'd like to take advantage of the five best-selling movies in 2015 to invite you to take your seats
speed and passion

only this movie can match the mobile medical treatment in 2015. Thanks to the third tier companies that have successfully secured the financing in 2014, thanks to the Internet plus policy of the state, from almost no one to pay attention to more than 3000 medical APP lines on the Internet for more than a year, only the enthusiasm of big steel can be matched.
registration and appointment, online consultation and follow-up of chronic diseases are the most popular entrepreneurial categories. Hundreds of apps called doctor XX can completely confuse you. In diabetes alone, unicorn studio has found more than 50 active apps. There are also many companies in the state of everything ready, only programmers can start
those who have nothing to do with medicine come in to do mobile medicine. Who makes us care about human health? Medical treatment is a 3 trillion plate, including 8 trillion yuan for big health. No wonder Renhe pharmaceutical has set to increase its investment by more than 1 billion yuan on o2o, Ping'an has self-employed hundreds of doctors to do online consultation, Didi has taken a taxi to bring doctors home, registered network has obtained hundreds of millions of US dollars of high price financing, and Ma Yun has called out that doctors will lose their jobs in 30 years
temptation and fear make us remember mobile medical deeply
incredible

after watching mobile healthcare for a year, I can only say that there are too many wonderful places. The 51st document of the health and Family Planning Commission stipulates that medical diagnosis and treatment can not be done online, public hospitals face south, medical insurance does not pay for disease prevention, doctors are unable to practice freely, and the supply of high-quality medical resources is in short supply, all of which determine that mobile medicine is malnourished at birth. There is a lack of wearable hardware and commercial insurance support, and mobile health care is not cheap for patients
although there are a lot of mobile medical services, there are still very few areas that we can do. Naturally, we need to learn from each other. Many apps claim to be used by tens of thousands of doctors or millions of patients, but it seems that no one is using them. Many companies dare to expand from 30 or 50 people to 300 or 500 people in a year. They have no profit, no income, and even can't see where their income is. The only thing that supports their confidence is VC's money and operating figures that don't know whether they are true or false. The instry thinks that a company with a fruit in its name will be the first to fall down next year. I hope it will not affect too many people
disagreers

while entrepreneurship is booming, users are watching coldly; On the other hand, Internet plus medical treatment is good, while medical treatment plus Internet is the right way. While mobile medical represents the future, mobile medical has no future
in 2015, there was an unprecedented divergence in mobile medicine: an anonymous article can almost "knock down" the benchmark of mobile medicine, doctor Chunyu; President Wang Shan, who is enthusiastic about "medical informatization", and Zhang Rui, who advocates "medical decentralization", interrupted each other 18 times in a dialogue; China's largest mobile medical company, the Internet, and Putian private hospital, its biggest financial owner, have made public the contradictions in medical advertising; Some people said that as soon as mobile medical started, others sang that mobile medical entered the second half; At the end of last year, investors did not invest in mobile Internet. At the end of this year, they did not invest in medical income
some people are optimistic about mobile healthcare, while others are pessimistic. No theory can convince the public, and no model can work
Charlotte worries

it's hard for small start-ups to start, and mobile medical leaders also worry a lot. Although the registration network has raised $400 million, which is equal to the total angel investment of hundreds of small companies. However, online traffic can't be realized, and registration can't receive money. Doctor Chunyu, Ding Xiangyuan and registration network have set up offline clinics and hospitals one after another. Good doctors have extended from triage to follow-up. After the e-commerce business of Ali health medicine was frustrated, cloud hospital and online medical service are still not popular. Tencent admits that it doesn't understand medical service, so it invests in companies that it thinks can connect medical information and doctors and patients, It's said that brother pony wants to divide the territory for several companies. Don't kill each other<
Mars rescue

entrepreneurs are all undeniable, and they don't have time to pay attention to other people's ideas. Just like Matt Dimon, who is forgotten on Mars, only when he desperately finds some poor resources can he survive until others come to save you
cooperation between mobile healthcare and commercial insurance is a hot topic in the second half of the year. Both "Tui Tang Gu" and "Teng AI Tang doctor" have been playing seriously. AstraZeneca, Sanofi and Pfizer have made deep alliances with mobile healthcare, and they all want to spend the hard winter of the instry by taking advantage of each other's temperature. Yuyue, Lepu and FRISO want to make their own mobile healthcare, which is to be an app, Who says that programmers in pharmaceutical companies can't solve the problem of difficult medical treatment
the State encourages doctors to practice more, and the closed medical door seems to open a crack. VC does not want to invest in a doctor group, so they are embarrassed to go out and greet people. As soon as the State encourages the implementation of hierarchical diagnosis and treatment, a number of companies have sprung up to do referral flying knife, "responsible medical organization", "integrated medical care" and "Caesar model" have also come
the informatization project, which lays the foundation for mobile medical, has not won enough attention, whether it is Omaha alliance, which advocates medical data standardization and public sharing, or the first Xuanwu Hospital Project invited by Apple Research Kit, or the first cloud hospital in Ningbo and the first Internet hospital in Wuzhen, or the "image cloud" project cooperated by Xi'an yinggu and China Telecom, Their huge heat will be released in the next few years, earth shaking is unknown
if medical e-commerce is also considered as the extension of mobile medicine, this is the most appetizing part of the annual drama. If you want to come, you always don't. You've already put in a lot of money. Even super players like Sinopharm have joined hands with 360 and Jingdong early, waiting for the policy to start. The future of pharmaceutical enterprises is very painful. The interests of hospitals will not be released. It is difficult to change the habits of patients. We will see the benefits of pharmaceutical e-commerce
or this sentence: whether you like 2015 mobile healthcare or not, its story and performance are vivid. You can doubt mobile medicine, but if you ignore it, you will miss a good play
in 2016, there are many suspenses about China's economy. Only when structural adjustment can land smoothly and the original interest pattern is broken can new instries take root. Will the value of mobile healthcare come to light? Will mobile medicine be everywhere or will it be a great success? Which companies will become unicorns of mobile medical? You can preset your own answers and wait for next year to test them.

9. This radar coin has not been recognized by the society and the investment community at all, so it will be in a very unstable state. This is very normal, and bitcoin is two concepts