Building private chain of blockchain LAN
When it comes to offshore companies, they usually choose to register in the islands. Some domestic giants, such as Ali, tengxu, Shanda network, Xiaomi and Haidilao, set up overseas IPO structures by registering offshore companies in the islands
advantages of offshore companies registered in the islands:
1. Full tax exemption system (only a small amount of annual management fee)
2. Company information confidentiality (high degree of confidentiality)
3. Overseas IPO structure (Tencent, Xiaomi and other domestic giants build overseas IPO structure by registering offshore companies)
4. Freedom of name (Chinese can be added)
5 No foreign exchange control
6, no specific business scope, as long as not engaged in illegal and criminal activities or need to franchise instry
Second, the non-profit foundation of Singapore can issue relevant legal opinions to prove that the operation of the company is in line with the current laws of Singapore The main contents of the legal opinions are as follows:1. White paper modification: the white paper of the project shall be modified where it does not comply with the laws and regulations of Singapore, and a professional legal compliance opinion shall be issued by a lawyer
2. Token non securitization certificate: the lawyer issued a professional legal opinion to clarify in detail that the token issued by the project does not have the nature of securities
1.1 start with imitation, First knowledge of blockchain
1.2 basis of blockchain: analysis of consensus mechanism
1.3 design principle and method of consensus mechanism
1.4 how to quickly clone a blockchain
1.5 how to turn bitcoin into its own private chain - bifurcated bitcoin
1.6 how to turn Ethereum into its own private chain - bifurcated Ethereum
1.7 how to turn ripple into its own private chain - bifurcated Ripple
1.8 how to turn stellar into a private chain of its own, How to develop your own blockchain wallet (windows and MAC) 1.11 how to develop your own blockchain wallet (Android and IOS) 1.12 how to develop an online wallet similar to blockchain.info 1.13 how to increase the security and robustness of your own blockchain network 1.14 how to use coin to handle recharge withdrawal business
1.15 How to use the fund pool to build a mixed currency service
1.16 how to design a new mining algorithm
this process is generally used, but it is also very difficult for ordinary people to complete. The mature projects of blockchain include Ethereum, decent, bitcoin and so on.
Share from DTV: how does the blockchain of DTV make profits in the end:
1. Build a blockchain ecosystem
Why do start-ups join in blockchain public chain projects one after another? Because it's a great opportunity. Any enterprise has the opportunity to create an ecosystem that subverts the existing pattern with its own ideas and operations. In this system, the currency designated by the ecosystem owner will circulate
because start-ups hold a certain amount of money and reserve some money for enterprises to dig, and the total amount of money is fixed, the faster the flow speed of the ecosystem is, the greater the demand for money is. More transactions chase less money, and the currency is bound to appreciate, but this idea is based on the fact that the currency is irreplaceable
now many research groups are developing cross chain technology to connect blockchains in different fields, so as to achieve the free circulation of money flow and data flow, and finally go to the exchange
in this case, the impact of a chain of money shortage on the ecosystem may not be as simple as the classical monetary theory, and the money price is likely not to follow the simple relationship between supply and demand. Designers need to think about this from a macroeconomic perspective
this is also the most attractive part of blockchain project: everyone is likely to establish new rules in this new field and become the manager of Qu centralized system. By then, the owners of the blockchain will have the ability to control the economy of the whole field - selling or inhaling digital currency will have a huge impact on the instry
2. Providing services for enterprises
providing services for enterprises is the main profit model of blockchain projects at the present stage, and cloud storage security skeptics are likely to turn to traceable and tamper proof blockchain service providers to seek maximum data security
for example, a blockchain start-up operating a data sharing platform, its main business includes providing data storage and data transaction services for customers, thus charging service fees and handling charges
there are many domestic start-up companies operating such businesses, such as cloud nest, border intelligence, magic chain technology, etc. Each company has excellent technology, but to make a profit, it may have to work hard on the operation
today, Tencent cloud's tbaas has joined this field and can provide services covering finance, supply chain, Internet of things, medical and other fields. It is believed that the competition and expansion of customers will become more difficult in the future
3. Smart contract participates in profit making
smart contract is like a contract that can be executed automatically. The validity of the contract is judged and enforced by machines instead of people. Its essence is still a piece of code, but the traceability and non tampering characteristics of blockchain can ensure that this piece of code runs automatically under the non trust mechanism. Blockchain is the precondition of smart contract operation
in practice, there are many opportunities for profit making through smart contracts, and smart contracts can solve these problems in a non black box way
in the running process of the program, the smart contract performs audit, classification information and other operations, which eliminates the interference of middlemen, and the record will not be artificially damaged, and the font on the file will not be blurred for a long time
but to some extent, the operators of smart contracts themselves become middlemen, and they automatically collect and pay audit fees through smart contracts. This kind of special intermediary service saves a lot of costs for customers, and its essence is realized by improving efficiency
4. Operation of special service driven system
many enterprises have their own exclusive fields in building blockchain community. Take the neurogenomics project led by geneticist church as an example. After enjoying the gene sequencing service provided by neurola, consumers can not pay in the form of legal money, but have to exchange legal money into the token issued by neurola
as more people exchange legal money for this token, nebula will successfully build a blockchain platform with gene data as the core, and after that, it will better carry out precision medical services
generally speaking, this mode relies on the actual technology, makes profits from offline services at the beginning of the project, and converts the legal money in the income into token in the process of making profits. With the progress of the project, the platform can carry out more precision medical services with the help of the data obtained from the start mode, and its profit methods have become diversified, but the whole process will not be separated from the entity
in the whole process of enterprise operation, token is mainly used as incentive, and token appreciation is not a problem that geneticists should consider
The original purpose of project 1CO is to crowdfunding in the market through pre-sale service. In 2013, the early 1CO company appeared in the financial field, and then quickly detonated the entire digital money market, resulting in the rise of speculationhowever, this storm came and went quickly. From 2013 to 2014 alone, many projects died in the speculation or were directly judged as fraud
according to Engadget data, 45.6% of the 902 crowdfunding based digital currencies have failed in 2017
Even so, there are still many survivors. These enterprises (including those that build the ecosystem) attach great importance to the role of token, and the appreciation of token will be calculated as part of the profits In essence, it is similar to an enterprise operating both financial assets (token) and operating assets (service) to manage operating assets to make financial assets profitable. However, if the proportion of "financial assets" is too large, the risk will come uninvited The foundation of sharing economy is to monitor the available resources and corresponding demands in real time and make adjustments to maximize the utilization of resources. For unicorns like airbnb, they have a mature management mode and stable cash flow. They try blockchain because blockchain technology can bring more transparent, more efficient and fairer systemsthis kind of enterprises use blockchain in the way of private chain or alliance chain. They don't need token to participate in circulation, and the nodes don't exist anonymously. They are interested in blockchain technology itself
with the blessing of blockchain technology, the manual input of ID information issued by the government will be transformed into the safe storage and verification of ID issued by the government. Customers and landlords can completely rely on the evaluation content. At the same time, the comments can be traced back to avoid the possibility of negative comments being deleted and the participation of the Navy
the profit model of airbnb and Tencent
the openness and decentralization of alliance chain are limited. Its participants are screened out in advance or specified directly. The read permission of the database may be public, or it may be limited to the participants of the system just like the write permission. Currency exchange of digital currency
2. Public chain
public chain is that every node in the blockchain is open, everyone can participate in the calculation of blockchain, and everyone can download complete blockchain data, also known as blockchain ledger
public chain refers to the process that anyone in the world can read and send transactions, and transactions can be effectively confirmed on the blockchain, and anyone can participate in the consensus process. The consensus process determines whether a block can be added to the blockchain and the exact current state
3. Private chain
202. What is private chain
private chain refers to the blockchain whose write permission is only in the hands of one organization. Read access is either open to the public or restricted to any extent. Related applications include database management, auditing, and even a company. Although in some cases, we hope it can have public auditability, in many cases, public readability is not necessary. It can be said that each of the three chains has its own advantages.
It can be understood as the LAN of Internet bar H2 >
a few people use it by themselves, more people use it, and more open people still need license, that is, the alliance chain
there is no need for license at all. Anyone can use the public chain