Bad invention of bitcoin
The concept of bitcoin was founded by Nakamoto
On December 12, 2010, when bitcoin graally became a hot topic, he quietly left and disappeared from the Internet As a descendant of samurai, Nakamoto was born in 1949 in Beppu, Japan. His mother, quanzi, was a Buddhist and brought him up in poverty When his parents divorced in 1959, Nakamoto's mother remarried and immigrated to California with her three sons. Nakamoto and his stepfather don't get along well, but according to his younger brother Arthur, Nakamoto showed his talent in mathematics and science when he was very young, but also showed his "fickle and strange interest"Nakamoto graated from Caltech, majoring in physics. Upon graation, he joined Hughes Aircraft and worked in defense and electronic communications. Later, Nakamoto worked for the U.S. military, and his experience was classified as a state secret. Now searching his files, his life is a blank
In 2008, in an e-mail group discussing information encryption on the Internet, he published an article outlining the basic framework of the bitcoin system. In 2009, he established an open source project for the system, officially announcing the birth of bitcoin. On December 12, 2010, when bitcoin graally became the climate, he quietly left and disappeared from the Internetbitcoin is the first currency to realize the concept of "secret currency". In 1998, Wei Dai first expounded the concept of "secret currency" in cypherpanks mailing list, that is, a new form of currency that uses cryptography principles to control the issuance and transaction of currency, rather than relying on the central management organization. In 2009, Satoshi Nakamoto published the first bitcoin specification and its proof of concept in the cryptography mailing list. At the end of 2010, Nakamoto left the project and did not disclose much about his identity. Since then, many developers have devoted themselves to bitcoin projects, and the bitcoin community has grown rapidly
Nakamoto's anonymous identity often leads to groundless worries, many of which are related to the misunderstanding of bitcoin's open source features. Bitcoin's protocol and software are published publicly. Any developer around the world can view its code or develop their own modified version of bitcoin software. Just like current developers, Nakamoto's influence is limited to the changes he makes that are adopted by others. Therefore, Nakamoto does not control bitcoin. So, today, the question of the identity of the inventor of bitcoin may be the same as that of the inventor of paper
up to now, bitcoin is only a small-scale large-scale socialization experiment, while Ruitai coin and Qianjin card are the experimental objects of bitcoin.
I think it is certain to give up
17 years to participate in a dinner, drink half of the wine. People in the group let me share what bitcoin is. Then a big man said: & lt; It's Nakamoto that invented bitcoin, right? How many bitcoins does he have? The first bitcoin system can only run on its own computer, so it is paid for the previous block, which is estimated to be about one million
big brother also said that this is too little, a total of 21 million. As the founder and chairman of the board, Sun Tzu should have at least 67% of the shares and absolute control, or worse, 51%. Moreover, he will separate every transaction in the future
I don't think the boss is going to stop. Pull the boss to say drink. Who knows, Nakamoto is an idiot. Mom, I think I just told another interesting story. Yes, the maximum amount of a bitcoin is more than 100000. If you think of bitcoin as a company, its market value is more than 2 trillion, ranking among the top ten in the world. If Nakamoto had given himself more marks, he would now be the first rich man in the world. Both Bezos and Bill Gates have to call dad{ RRRRR}
Yes, human beings are selfish. The world is the jungle. There are common genes in human DNA. That makes us feel the same emotions. It's one of the guarantees that we humans can help each other and live to the present
the highest price is 1 million bitcoin, worth 20 billion US dollars. Since the birth of bitcoin in 2009, there has been no bitcoin in Nakamoto's wallet address
every time I think about this, considering the struggle against humanity and ugliness, I think life is worth it. If we calm down, we can win
Craig Wright, who claims to be "the inventor of bitcoin," is now charged with defrauding $5 billion worth of bitcoin and other assets from a computer security expert and is now suing
in the indictment, cleman's brother released an e-mail correspondence purportedly between himself and Wright. In the emails, Wright hinted that he might hold 300000 bitcoins belonging to cleman
what is pre-sale
there are many titles for pre-sale personnel, such as pre-sale engineer, solution expert, pre-sale consulting engineer, technical consultant, pre-sale technical support engineer, etc
in fact, pre-sale is a broad term for participants in the pre-sale stage
what is the pre-sales stage the life cycle of an IT project can be roughly divided into three stages: pre-sale, in sale and after-sale pre sale refers to the stage before signing a contract with a customer. It generally includes the process of obtaining clues, customer communication, providing technical solutions, bidding, signing contracts and so on in sale refers to the stage after signing with customers. It includes requirements review, design, development and implementation after sales refers to the stage after project delivery. It includes maintenance, training and technical support presales mainly provide technical support in the pre-sale stage, but continuity is usually considered in an IT project, so presales will also participate in the in-sale and after-sale work the relationship between pre-sales and other IT personnel pre sales vs sales sales (account Manager) undertakes business for the company, and needs to be engaged in business activities such as seeking clues, visiting customers and maintaining customer information but in the process of signing a project, it needs a lot of technical and documentation work. Such as technical communication with customers, writing technical documents and so on. These jobs are usually done by presales
pre sales vs R & d
why not let R & D support sales? Because although R & D understands technology, it doesn't understand business
take software developers for example, they may understand java language, C language, Oracle database and Hadoop architecture, but they may not understand customers' business, such as financial business, medical business, even monetary theory and medical technology. These are business. Technology should be based on business
pre sales is the group of people who know the most about customer business in IT companies. Before sales, the customer's business needs into technical personnel can understand the language
pre sales vs Proct Manager
it sounds like the concept of proct manager in pre-sales and Internet companies is very similar. In fact, in IT companies, there is also the role of proct manager. What's the difference between pre-sale and proct manager
the common point is that both of them need to communicate with customers, research needs and write requirements documents
the difference is: the mission of pre-sales is to sign orders, and the mission of proct manager is to build procts. Before sales, I think more about how to develop the market and sign more projects. The ideal of proct management is how to create better and more marketable procts
type of pre-sale
it is necessary to know the type of pre-sale before answering what to do. According to whether there is a proct, whether it belongs to the headquarters or the region, presale can be divided into four categories
Proct Type pre sales & amp; Scheme type pre-sales
Proct Type pre-sales is the most easy to understand, that is, after the company has a proct, it helps sales to promote the proct to customers. Hardware companies, such as server and switch manufacturers, are mainly pre-sale procts
many enterprise customers want procts that are not available in the market. What manufacturers have to do is to provide solutions. This kind of pre-sale is the solution type pre-sale. For example, in the integrated manufacturers, it is mainly the solution type pre-sale
proct line pre sales & amp; Regional pre-sales
many large IT manufacturers have multiple R & D proct lines, and at the same time, there are many regional centers all over the country. So there are proct line pre-sale and regional pre-sale classification
before sales, proct lines usually focus on a certain instry or even a certain type of business, have forward-looking consideration and layout of procts, and face the national market
Regional pre-sales is closer to customers and better understand their needs. Regional pre-sale needs to face multiple customers or even multiple instries in the region, and the depth of understanding of business is not as deep as that of proct line pre-sale, but the breadth is greater than that of the latter
in this kind of company, proct type pre-sales and regional pre-sales often need to learn from each other and make up for each other
pre sales responsibilities
the basic responsibility of pre-sales is to assist the sales to complete the project signing, and the pre-sales work is mainly carried out around the project life cycle
pre sales stage
< UL >solution planning: pre sales needs to explore instry demands, problems and pain points, sort out instry solutions and best practices, and carry out solution planning and design
Technical Exchange: assist the sales department in technical exchange with the target customers, explain the existing solutions and cases of the company, and understand the needs of customers in the exchange
write solutions: write solutions based on customer needs
scheme explanation: responsible for explaining and demonstrating the scheme for customers, and guiding users to identify with the technical scheme
write technical documents: if the scheme is accepted by users, there are many links to provide technical documents before bidding, such as technical specifications, feasibility study materials, workload evaluation materials, etc
Bidding Support: responsible for assisting sales to complete the bidding work, mainly responsible for the preparation of technical volume and business volume, and going to the bidding site for bid presentation and defense
demand research in the sale stage: after signing the project (often before signing the project), the first step is to conct demand research and analysis, and prepare the top-level design, demand specification, and demand management
requirement disclosure: responsible for the requirement disclosure of the project from pre-sale to in-sale, assist the delivery team to confirm the requirements, and provide relevant documents and knowledge transfer for project implementation
cooperative delivery: cooperate with the delivery manager to complete the delivery of the overall project; Because the company is good at writing materials before sales, it often helps the deliverer manager or customer to write work reports, work summaries, technical innovation and other materials
after sales stage
after sales service: such as proct technical training, material support work
demand collection: in the after-sales stage (often on sale), it is necessary to collect users' new demands before sales. When there are more demands, it is necessary to strive to promote customers to set up another phase of the project
for large IT companies, these responsibilities are usually distributed to different categories of presales, such as solution experts, presales leaders, proct line presales and regional presales
pre sales capability system
(this section will not elaborate, and interested readers can pay attention to other articles of "it pre sales circle")
word: only the pre-sale writers can understand the profundity of word
Excel: mainly used for managing clues and requirements; Before sale, this software is overqualified
ppt: the higher the rank is, the better the PPT is
Visio: used to draw flow chart and network architecture diagram
PS: it will be used when it's cold, I won't elaborate here
mind mapping software, such as mindmaster: help to sort out work, materials and ideas
Axure: it is mainly used for software pre-sale, for interface design
notes: for example, Daoyun notes, OneNote, etc., which are used to record events, take learning notes, and collect materials
According to foreign media sources, Craig Wright, who claims to be the "inventor of bitcoin," is now accused of defrauding $5 billion worth of bitcoin and other assets from a computer security expert
Wright, an Australian living in London, has not yet commented. He is also accused of violating his obligation to cooperate with cleman and making himself rich illegally at the expense of his colleagues