How to implement blockchain contract
The term "smart contract" can be traced back to at least 1995 and was proposed by the prolific interdisciplinary legal scholar Nick Szabo. He mentioned the concept of smart contract in several articles published on his website. His definition is as follows:
"a smart contract is a set of promises defined in digital form, including the agreements on which the contract participants can implement these commitments."
Let's explore the meaning of his definition in more detailcommitment
a set of commitments refers to the (often mutual) rights and obligations agreed by contract participants. These commitments define the nature and purpose of the contract. Take a sales contract as a typical example. The seller promises to deliver the goods and the buyer promises to pay a reasonable price
digital form
digital form means that contracts have to be written into computer-readable code. This is necessary, because as long as the participants reach an agreement, the rights and obligations of smart contract establishment are executed by a computer or computer network
(1) when will the parties to the smart contract reach an agreement? The answer depends on the specific smart contract implementation. Generally speaking, the contract is discovered when the parties are committed to the execution of the contract by installing the contract on the contract host platform (2) the real meaning of "execution" also depends on implementation. Generally speaking, implementation means active implementation through technical means(3) computer readable code
in addition, the specific "digital form" required by the contract is very dependent on the agreement that the parties agree to use
protocol
protocol is technical implementation, on this basis, the contract commitment is realized, or the contract commitment is recorded. Which agreement to choose depends on many factors, the most important of which is the nature of the assets being traded ring the performance of the contract
again, take the sales contract as an example. Suppose that the participants agree to pay in bitcoin. The chosen protocol will obviously be bitcoin protocol, on which the smart contract will be implemented. Therefore, the "digital form" that the contract must use is bitcoin scripting language. Bitcoin scripting language is a non Turing complete, imperative, stack based programming language, similar to forth
smart contract
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1. Technology empowerment and cross-border cooperation
not only Xiaomi and Tencent, but also iFLYTEK has a developer's festival. IFLYTEK's open platform is open source technology, shared with 450000 entrepreneurs. Every day, 4 billion people use iFLYTEK's open technology, which is technology empowerment and cross-border cooperation. Mr. Liu Zihong is building the "flexible +" platform of Rouyu, which is also a typical example from technology enabling to cross-border cooperation
2. Be yourself and practice internal skills
What are we going to do? We should be ourselves and practice our internal skills. As long as you make the best of what you are good at, you will have "core competitiveness". In the past, it was said that we should make up for our shortcomings. Today, the shortcomings are not important. If everyone makes his own long board, he can make the container higher
when he was young, his parents wanted him to become a writer and painter, but his works were evaluated as "no room for shaping" by his teachers. Later, his chemistry teacher discovered his talent. After training, walach won the title of doctor of chemistry at the age of 22, and finally won the Nobel Prize in chemistry
everyone has his own short board. As long as he finds his best position in life and gives full play to the potential of the long board, he can achieve the most amazing results, which is the "Wallach effect". This is the way to be a person, an enterprise and an investment
let me give you an example. There is an investor in Shenzhen who has invested in the consumer instry for more than ten years. He has invested in Zhou Heiya, Baiguoyuan and Naixue's tea projects. Although he is famous today, more than ten years ago, everyone thought that the things he invested in had no room for imagination, and PE was very low, that is, he opened a shop to do business. But he persisted, and has been doing insight, understanding, and research in this instry to invest in projects. Up to now, he has become the top investor in the field of consumption, and has gained in-depth thinking of the instry. This person is Feng Weidong, the managing partner of Tiantu investment
it needs to be hard to forge iron. If you do it well, everything will follow, facing the heart and blooming in spring. To be good at yourself is the most powerful thing
3. Quality revolution and ingenuity return
why does Japan have such a good consumer service instry? Because Japan's economy has been in a downturn for a long time, and the Japanese market is very small, everyone has the opportunity to stand out and be bought by consumers only when they make their procts the best
some people say that it is a good time to get the bottom of the stock market and the real estate market, but I think it is also a very good time to get the bottom of the life. Chen Biao, a senior journalist, once said that we should not forget why we started just because we have gone too far. In today's adjustment period, we have the opportunity to calm down and think about why we want to start a business? What purpose and effect do I want to achieve? Many people around me are already thinking about this
as an interesting example, since our company was founded nearly three years ago, I have not been able to recruit a particularly good editor, because the first group of editors went to Party A as a brand, and Party A had more money and less work; The second group, because we media has risen, many people have gone to work in US media. Now we media is nothing but chicken feathers, and few people can survive tenaciously; The third group of writers have gone to do blockchain media. In my understanding, many blockchain media are public relations media, but who makes it profitable. Later facts have proved that many of them have been shut down
in the face of a phased downturn today, when everyone is thinking about what I am best at, I think the quality revolution may be based on the return of ingenuity, and each of us should think about what we can do and what we can do well
I believe I can recruit a good editor in chief soon
4. Consensus mechanism, rule first
everyone is talking about blockchain today. I made a documentary about three or four years ago, the group dance of black bees. At that time, I was the only filmmaker of wildlife documentary in China. After shooting, because of its uniqueness, this work also won many awards. I would like to make this point: a bee is an insect, and a group of bees are mammals. The work of bees is unconscious and distributed, but the colony has formed an organic function and brought about the reproction of the population. Later, some people described blockchain as honeycomb thinking, which I very much agree with
from the hunting age to the workshop age, from the instrial age to the information age. Every progress of human society comes from the upgrading of cooperative relationship
blockchain has removed the transaction mode based on "organization" link and established the transaction mode based on "person" link. Blockchain technology + Tongzheng economy + community = instrial community. Instry + blockchain, based on the public account book, can make the information symmetry, trust symmetry, resource allocation, cost-effective management, and efficient capital flow of all cooperative entities in the instrial ecology, optimize the proction relations, and fully release the proctivity of workers
5. All things accelerate their evolution, and the only constant is change
why was I the only one who made wildlife documentary at that time? Because it doesn't make money, the price of this film is about 1 million yuan. I shot it for 700 days. After shooting, the company won a lot of awards, but it soon went bankrupt. Today, when I was making a commercial documentary, I didn't dare to do it with such a rhythm
some time ago, we photographed the short rent of piglets. They don't start a business for a long time. When they start a business, their benchmarking is airbnb; At the end of last year, his target was the hotel; Last week, when we went there to visit students, he said that we should do instrial Internet, from information flow to service flow
in this era, the only constant is change. There was a joke in the past that "the only constant for women is fickleness". In fact, in this era, I think the ability to deal with complex situations is one of the most important core competitiveness of founders. Change is to seek death, change is to wait for death. The person who chooses to seek death between seeking death and waiting for death must be an entrepreneur
Bill Gates once said: people always overestimate the changes in the next year and underestimate the changes in the next 10 years. Chen Chunhua once said: in the future, enterprises will only focus on growth rather than success, regardless of size. Xiaomi's Liu De also said: do a good job in this year and arrange for next year. I didn't expect to fall like this when I rang the bell. Zhang Liaoyuan of three squirrels also felt deeply about this: I don't set any goals now. I used to like setting goals, but today I only dare to set goals for next month
every year "I have guests" interviews 500 guests to learn about their cases. We have made nearly 100 programs, reaching 350 million high-end people. The theme of this season is "I have guests - the story of the reformer.". The story of death and posterity is particularly moving. Companies that have never been able to survive are not able to have the motive force of free growth
on the other hand, the guest university does not have the physical wall, nor the shackles of thinking. It has global pattern, seeking change and following reality, opening up knowledge, linking value, dynamic cognition and elite dialogue
it's very meaningful for us and students to go into each company and explore their ups and downs, to feel their changes, their ability to cope with changes, their ability to deal with crises, and to feel life and death with them
Jobs said that he was willing to exchange his life's wealth for the opportunity to talk with Socrates. That is to say, we are going to meet Socrates one by one. We are going to talk with Mr. Fang Hongbo of Midea about how they are going to upgrade from a home appliance benchmarking enterprise to an intelligent instry; Talk to Cai Xiaodong of aofei about how they have changed from a toy factory to an entertainment IP magnate; Talk with Uncle Kai about how they have become the first brand of children's ecation from audio programs; Talk with Mao Daqing about how real estate turns to entrepreneurial services; He also talked with Jiang Xipei of Far East Group about his four survival changes
6, the city is a super instrial community
instrial community is not only the development path that enterprises should take the initiative to explore, but also the development direction of the city. The concept of city that I know is not necessarily a city, but also a district, a small town or a province. Of course, given the concept of "smart city", the instrial community can do better
a benchmark is Shenzhen, where we live today. In 2017, about 70% of the intelligent hardware in China came from Shenzhen. Shenzhen has all the resources and conditions from hardware design to procts. A hardware entrepreneur from Silicon Valley yelled, "here we can find any raw material we want within one kilometer, which is impossible in the United States, Europe and anywhere in the world, because there is no Huaqiangbei in Shenzhen."
Shenzhen provides a very natural convenience for entrepreneurs. There are many great enterprises in Shenzhen, such as Huawei, oppo and youbiexuan. They are all brought up by the fertile land of Shenzhen. There are two kinds of entrepreneurs, Tianpai and Dipai. Tianpai is an Internet entrepreneur; Di Pai is more early entrepreneurs in Shenzhen. They open factories, have their own proction lines, and do things in a down-to-earth way
lack of instrial landing coordination, Internet, app and innovation are "castles in the air"; Lack of technological innovation and upgrading, "local entrepreneurship" will always be the labor force at the end of the instrial chain
only the combination of heaven and earth can we innovate and upgrade and create a better life for us& quot;
it is suggested to find a guild to mine in zhurongshan regularly, but don't forget to leave some physical strength value to reset the .
Electronic contract itself is a kind of electronic data, which has security defects such as easy to tamper and delete, which is not concive to the long-term development of the service. In order to ensure the legal effect of the electronic documents and electronic contracts signed by users on the electronic contract platform, it is necessary to deposit the whole process of electronic contract signing
in the application of "legal chain" based on blockchain certificate keeping technology, the platform will archive the key links of electronic contract signing, and store the key information and data in the whole blockchain, so as to realize the whole process of electronic contract certificate keeping
in-depth study of its implementation principle, blockchain uses cryptography algorithm, specially designed data structure and multi-party consensus algorithm to solve the consistency, reliable storage and anti tampering problems of multi-party transaction records by machine algorithm, which has a strong natural relationship with electronic data storage
First of all, the electronic contract signing records are stored in a shared account book jointly maintained by multiple parties, which can not be tampered with, denied or lostsecondly, the text and elements of the electronic contract are encrypted, including the participants of the electronic contract. Only the participants can decrypt and view the data to protect the privacy of the parties
thirdly, the machine strictly implements the pre-defined rules (smart contract), and no longer relies on a single agreement with a third party. KYC service based on blockchain automatically checks and verifies the validity and identity of certificates, and ensures the authenticity of participants' identities on the basis of privacy
at present, the electronic contracts signed on our electronic contract platform have realized the distributed storage of digital fingerprints of electronic documents through blockchain technology, which further strengthens the legal effect of the platform's electronic contracts
Through the deep use of cryptography algorithm, specially designed data structure and multi-party consensus algorithm, blockchain uses machine algorithm to solve the consistency, reliable storage and anti tampering problems of multi-party transaction records, which has a natural strong correlation with electronic data storage
at present, the electronic contract signed on the advanced electronic contract platform has realized the distributed storage of digital fingerprints of electronic documents through the blockchain technology, which further strengthens the legal effect of the platform electronic contract
The main application of blockchain in electronic cooperation is data storage. Through the deep use of cryptography algorithm, specially designed data structure and multi-party consensus algorithm, machine algorithm is used to solve the consistency, reliable storage and anti tampering problems of multi-party transaction records, which has a natural strong correlation with electronic data storage
as a leading third-party e-signing platform in China, we have been constantly polishing our procts for many years, and making a comprehensive layout of intelligence. Based on the original two core functions of real name authentication and contract signing, our E-contract SaaS proct function adds six moles: organization management, approval management, seal management, contract drafting, contract template management, notarization and certificate keeping. Earlier, we also released a number of technologies, such as handwriting recognition, fragmentation storage mechanism, printing security and anti-counterfeiting. In addition, in view of the lack of online judicial disposal channels and the different standards for determining the effectiveness of electronic evidence, we have launched a "real hammer" preservation system to achieve evidence preservation and real-time issuance of evidence, and provide more professional and efficient legal protection services while providing customers with electronic contract services
Blockchain technology is popular in the market because it can rece intermediate links, rece fraud caused by data consistency, improve business efficiency and speed, rece the risk of counterparties, increase revenue and save costs
in-depth study of its implementation principle, blockchain uses cryptography algorithm, specially designed data structure and multi-party consensus algorithm to solve the consistency, reliable storage and anti tampering problems of multi-party transaction records by machine algorithm, which has a strong natural relationship with electronic data storage
first of all, the electronic contract signing records are stored in the shared account book jointly maintained by multiple parties, which can not be tampered with, denied, and of course will not be lost
secondly, electronic contract text and electronic contract elements are encrypted, including electronic contract participants. Only participants can decrypt and view the data to protect the privacy of the parties
thirdly, the machine strictly implements the pre-defined rules (smart contract), and no longer only relies on a single agreement with a third party. KYC service based on blockchain automatically checks and verifies the validity and identity of certificates, and ensures the authenticity of participants' identities on the basis of privacy