Blockchain technology equity crowdfunding

1. blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. The so-called consensus mechanism is a mathematical algorithm to establish trust and obtain interests between different nodes in the blockchain system
blockchain is the underlying technology of bitcoin, like a database ledger, recording all transaction records. Because of its safety and convenience, this technology has graally attracted the attention of the banking and financial instry
in April 2018, a group of scholars from Oxford University announced the establishment of Woolf University, the world's first blockchain University
in a narrow sense, blockchain is a kind of chain data structure that combines data blocks in chronological order in a sequential way, and it can not be tampered with and forged by cryptography
broadly speaking, blockchain technology is a new distributed infrastructure and computing method, which uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligent contract composed of automated script code to program and operate data.

2.

If you want to understand the application of blockchain, you can refer to many books and opinions, such as illustrated blockchain, blockchain: reshaping the economy and the world, blueprint and guide of new economy, and articles of coin'an community, including a detailed understanding of the platform of coin'an community, with great strength

As the name suggests, blockchain is composed of block and chain. It is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and so on. It is a kind of chain data structure that combines data blocks in order according to the time sequence, and it is a secure and reliable distributed account book that can not be tampered with and forged by means of cryptography

in 2008, in his paper bitcoin: a peer-to-peer e-cash system published by Nakamoto, he first proposed the idea of blockchain and encrypted digital currency. Starting from bitcoin, blockchain has become the underlying technology of various digital currencies

Second, the working principle of blockchain:

1. The basic concepts include: (1) transaction: one operation will change the account status once, such as adding a record 2) Block: records the transaction and status data within a specified time, which is a consensus and preservation of the current account status 3) Chain: it is composed of a series of blocks in chronological order, which is the log record of the whole state change. If you understand the working concept of blockchain, it is not difficult to understand its working principle. Suppose there is a distributed data logbook, which can only be added, not deleted or changed. Its structure is a linear chain formed by a series of "blocks" (which is also the source of the name of "blockchain"), and new data must be put into a new block to be added, The maintenance node can propose a new block, but it must go through a certain consensus mechanism to reach an agreement on the final selected block

2. Take bitcoin as an example to see the working principle of blockchain

the block of bitcoin is divided into block head and block body

Core advantages and characteristics of blockchain

1. The verification, accounting, storage, maintenance and transmission of decentralized blockchain data are all based on distributed system structure. There is no centralized hardware or management organization, and the rights and obligations of any node are equal, The data blocks in the system are jointly maintained by the nodes with maintenance function in the whole system. 2. The open and transparent system is open. In addition to the private information of all parties to the transaction is encrypted, the data of the blockchain is open to all. Anyone can query the blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent. 3. Security blockchain uses consensus based specifications and Protocols (such as a set of open and transparent algorithms) to enable all nodes in the whole system to exchange data freely and safely in a de trusted environment, so that the trust in "people" is changed into the trust in machines, and any human intervention does not work. 4. Information cannot be tampered with. Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% (almost impossible) nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid. Therefore, the data stability and reliability of the blockchain are extremely high. 5. Anonymity because the exchange between nodes follows a fixed algorithm, and its data interaction does not need trust (the program rules in the blockchain will judge whether the activity is effective or not). Therefore, the counterparties do not need to let the counterparties generate their own trust by disclosing their identities, which is very helpful for credit accumulation

At present, the most popular classification of blockchain is to divide blockchain into public blockchain, private blockchain and consortium blockchain according to different participants

1. Public chain: anyone can participate in the use and maintenance, and can obtain the effective confirmation of the blockchain. Public chain is the earliest blockchain and the most widely used blockchain at present, such as bitcoin blockchain. The information is completely public

if the licensing mechanism is introced, it includes private chain and alliance chain. 2. Private chain: a company or indivial only uses the blockchain technology, enjoys the exclusive write permission of the blockchain, and does not disclose the information. At present, conservative giants (traditional finance) want to experiment with private blockchain, and the application procts of private blockchain are still groping. 3. Alliance chain: it is a blockchain between the public chain and the existing chain, which is jointly controlled by multiple organizations. The use of the chain is managed with authority, which can be controlled by the manager, and also open to others according to the manager's wishes. In addition, according to the different use scenarios and purposes of blockchain, it can be divided into currency chain for the purpose of digital currency, property chain for the purpose of recording property rights, and crowdfunding chain for the purpose of crowdfunding

On May 28, Ma Huateng, CEO of Tencent, proposed the anti-counterfeiting method based on cloud integrated blockchain technology, which is far more efficient than traditional anti-counterfeiting methods. The future anti-counterfeiting verification scenario may only require users to use their mobile phones for simple scanning, and a large number of complete information based on different dimensions can be obtained

take Maotai liquor as an example:

distillery address, proction workshop, operation staff, inspector, delivery time, transportation vehicle information and driver information,

liquor year, raw material source, raw material supplier, storage warehouse number, raw material transportation vehicle and driver information,

all information can be accurately traced, permanently recorded and tampered with

the above information can be easily verified

2. Food safety issues as early as last November, Wal Mart has cooperated with IBM to track the source of food by using blockchain technology, so as to ensure the safety of food and increase the circulation of food to rece costs. For Wal Mart and other large supermarkets, it took a few days to investigate the source of problem food, After using this technology, only one item of proct information is needed to achieve accurate traceability, and important information such as food origin, inspector, supplier, logistics and transportation can quickly find problems in a few minutes. Currently, procts tracked by blockchain include packaging procts from the United States and pork from China

3. Information security

blockchain technology is promoting an information security technology revolution. (1) identity protection PKI is a common public key encryption technology in e-mail, message application, website and other communication applications. However, since the implementation of most PKI, the centralized trusted third party certification authority (CA) is used to issue, activate and store user certificates. Hackers can attack PKI to fake user identity or crack encrypted information

certcoin is the first PKI implementation of blockchain, which comes from MIT, removes the centralized authentication center, and uses blockchain as a distributed ledger for domain name and public key

pomcor company: blockchain PKI implementation path: keep the authentication center, and use blockchain to store the hash value of issued and activated certificates. Users can verify the authenticity of certificates through decentralized and transparent sources, and can also improve the network access performance through local authentication of secret key and signature based on blockchain

(2) data integrity protection

guardtime developed a secret key free signature architecture (Ksi) based on blockchain technology to replace the secret key based data authentication technology. Ksi stores the hash table of the original data and files on the blockchain, runs the hash algorithm to verify other copies, and compares the results with the data stored in the blockchain. Any data tampering will be found quickly because the original hash table is stored in millions of nodes

(3) key infrastructure protection

the "Achilles heel" of the Internet, DDoS has entered the TB era, DDoS is still the simplest weapon for hackers to bring down the big target with low cost, DNS service is the primary target for hackers to carry out large-scale destruction, but blockchain technology is expected to fundamentally solve the problem

The distributed storage of

blockchain makes hacker attacks lose focus. Nebulis is developing a distributed DNS system, which uses Ethereum blockchain and interstellar Internet file system (IPFs, the distributed substitute of HTTP) to register and resolve domain names. The biggest weakness of DNS is caching, which makes DDoS attacks possible. It is also the bane of the centralized government's censorship of social networks and manipulation of DNS registration. A highly transparent and distributed DNS system can effectively prevent any entity, including the government, from arbitrarily manipulating records

(1) digital currency: improve the convenience of currency issuance and use, such as bitcoin and Ethernet in foreign countries, and guorenbao in China

from the use of physical transactions, to physical currency and credit currency, and then to the rise of bitcoin network, more and more people are aware of the distributed ledger blockchain technology behind it, and graally apply it in many scenarios other than digital currency

(2) cross border payment and settlement: realize point-to-point transaction, rece intermediate fees

transfer and payment. At present, the most mature application of blockchain technology is payment and transfer. Blockchain technology can avoid complicated systems, save the process of inter-bank reconciliation and review, and accelerate the settlement speed; virtual currency can rece transaction costs without the intervention of clearing house. Different countries have different clearing proceres. It takes two or three days for a single remittance to arrive, which is inefficient and accounts for a large proportion of funds in transit. No longer through the third party, through the blockchain technology to form point-to-point payment. By eliminating the link of the third-party institutions, we can make full day payment, real-time payment, withdraw cash quickly and rece the hidden cost, which helps to avoid the capital risk. It is timely and convenient

(3) bills and supply chain financial business: rece human intervention, rece costs and operational risks

value transfer between point-to-point, control and verify physical bills or central system; Intermediaries will be eliminated and human intervention reced. With the improvement of efficiency, financing channels are more unblocked, risks are lower, and multiple parties benefit

(4) securities issuance and Trading: realize quasi real-time asset transfer, accelerate the speed of transaction clearing

the application of blockchain technology can make the process of securities trading more concise, transparent and fast, rece the plication of IT system, and improve the efficiency of market operation. For stocks, blockchain can eliminate paper and pen or electronic form records, rece human errors in trading, and improve the transparency and traceability of trading platform. Citigroup and Nasdaq cooperate to promote blockchain applications

(5) customer credit investigation and anti fraud: rece the cost of legal compliance, prevent financial crimes

the customer information and transaction records recorded in the blockchain help banks identify abnormal transactions and effectively prevent fraud. The technical characteristics of blockchain can change the existing credit reference system, and store the data of customers with bad records in the blockchain when the bank concts "know your customer" (KYC)

equity crowdfunding:

3. Now let's talk about the feasibility of blockchain equity crowdfunding in China. As we all know, as far as China is concerned, companies fall into two categories: joint stock companies and limited companies
joint stock companies are divided into "listed companies" and "unlisted companies". The shares of a listed company are registered in China securities registration and Clearing Corporation, so its behavior of issuing shares or trading shares is regulated by the CSRC. Here, we don't want to explain more; The shares issued by non listed companies do not need to be registered by any institution, and can be confirmed by issuing shares and maintaining the register of shareholders. Of course, many of them are registered through third-party institutions such as the instrial and commercial department or China Securities Depository and Clearing Corporation, and use the local share custody center to provide third-party registration services for publicity. Moreover, when the company's equity changes, it is necessary to manually process paper equity certificates, option issuance and convertible notes. In this way, the company's stock rights can be changed, The maintenance of the register of shareholders will become very complicated, and the tracking and maintenance of transactions will become more difficult to trace with more and more transactions
if the techshares blockchain technology is used for equity crowdfunding, all the above problems can be perfectly solved. The blockchain account book is safe and transparent, and can not be tampered with. It is also easy to track, and can record the company's equity and its change history at any time
convenience of equity transfer and circulation
for equity crowdfunding, equity circulation is an important part of business, which can stimulate the activity of users and promote more registration and issuance. The traditional OTC over-the-counter equity trading is based on the credit of both sides of the transaction, and the two sides of the transaction bear the credit risk on their own. The transaction can only be carried out after the establishment of bilateral credit, and the trading platform bears the credit risk of market traders
techshares blockchain technology can rece the credit risk of transactions. In essence, it decentralizes the third party that provides credibility to a more thorough extent, that is, it is no longer limited to specific third party entities, but relies on all participants to jointly maintain a set of registration system. On the one hand, blockchain gives the right to record to the company itself, reflecting the spirit of autonomy; On the other hand, it can also ensure the openness, transparency and authenticity of information records, and minimize rights disputes. The ownership of equity is registered in the blockchain, and the equity transaction must be signed by the owner's private key to be verified; After the transaction is confirmed, the change of equity will also be recorded in the blockchain, so as to protect the interests of both parties
how to ensure safety
as an investor, the most worrying problem is the safety of funds. Traditional equity crowdfunding often has the problem of "double flowers" (Note: double flowers - Double expenses, that is, the only share is repeatedly transferred to two people). Until the electronic data is comprehensive, the central clearing agency ensures that the whole system can be leveled after trading. But the risk is often borne by the platform. Unlike traditional floor trading, equity crowdfunding business is carried out by many independent companies. Therefore, these trading activities are scattered on various platforms. With the techshares blockchain technology, the decentralized trust constructed by the blockchain can ensure the normal operation of the system and business without the need for mutual trust. Everyone becomes a node in the blockchain, with their own public key and private key, participating in rapid transaction verification and accounting. Moreover, in the initial stage of equity crowdfunding, the sponsors, crowdfunding platforms, investors and sponsors jointly sign a crowdfunding contract to agree on their respective responsibilities and obligations. The contract can be stored in the blockchain in the form of a smart contract, and the blockchain ensures that the contract cannot be tampered with ring the performance. In this way, there is no need to worry about safe space
it has strong expansibility, reasonable and legal
blockchain equity crowdfunding is composed of three-tier structure, and the bottom layer is blockchain network, which constructs a decentralized trust distributed system; The middle layer is the combination of business logic and blockchain to jointly establish account center, equity registration, equity voucher, equity transaction, equity management and other functions; The top layer is the crowdfunding platform for customer-oriented business, and the business of the platform can be extended to various fields and instries in theory
with techshares' blockchain technology, decentralized trust can be realized by building P2P self-organizing network, orderly and tamperable cryptography account book and distributed consensus mechanism. In addition, no matter the company law, the regulations on the administration of company registration or other laws and regulations, there are no specific restrictions on the form of expression of the register of shareholders maintained by the company itself. The company can choose to create and maintain the register of shareholders in any form with written records, not limited to specific carriers. Therefore, it is entirely reasonable and legal to use techshares as a carrier for equity crowdfunding on the blockchain. Once it is voluntarily chosen by the company, it can provide legal and effective proof for the company's equity (shares).

4. The equity crowdfunding platform based on blockchain technology allows start-ups to raise funds by issuing digital currency to early supporters. Early investment supporters can obtain funds through the appreciation of digital currency obtained in the early stage. More wonderful application problems can be paid attention to SMIC blockchain service platform for real-time understanding

5.

From the perspective of technology and architecture, I will tell you my understanding of blockchain in common language

what is blockchain? In a word, blockchain is a storage system. To be more specific, blockchain is a distributed storage system without an administrator and each node has all the data

What are the common storage systems like

first, how to ensure high availability

the common storage system usually uses "rendancy" to solve the problem of high availability. As shown in the figure above, if the data can be copied into several copies and rendant to multiple places, high availability can be guaranteed. The data in one place is hung, and there is data in other places. For example, the master-slave cluster of MySQL is the same principle, and the raid of disk is also the same principle

two points need to be emphasized in this place are: data rendancy often leads to consistency problems

1. For example, in the master-slave cluster of MySQL, there is actually a delay in reading and writing, which means there is a inconsistency in reading and writing in a short period of time. This is a side effect of data rendancy

The second point is that data rendancy often reces the efficiency of writing, because data synchronization also consumes resources. If you add two slave libraries, the write efficiency will be affected. The common storage system is to use rendancy to ensure the high availability of data

so the second question, ordinary storage system, can write more

the answer is yes, for example, take this graph as an example:

in fact, MySQL can do a master-slave synchronization of al masters, master-slave synchronization of al masters, two nodes can be written at the same time. If you want to do a multi room multi live data center, in fact, multi room multi live data synchronization. What we should emphasize here is that multi-point writing often leads to the consistency problem of writing conflicts. Take MySQL as an example, suppose that the attribute of a table is self incrementing ID, then the data in the database is 1234 now. If one of the nodes writes and inserts a piece of data, it may become 5, and then these 5 pieces of data are synchronized to another master node, Before synchronization, if another write node inserts a piece of data, a piece of data with self incrementing ID of 5 will be generated. Then, after the generation, synchronize to another node, and the synchronized data will conflict with the two local 5's after it arrives, which will lead to synchronization failure and write consistency conflict. This problem will occur in the case of multi-point writing

how to ensure consistency in multi-point writing

the reform "Swan class" gives you more technical work

6. Shandong bianke Information Technology Co., Ltd. is a software development company with excellent technology
[blockchain exchange]
blockchain technology application research and development, exchange wallet system app development, blockchain technology is actually a new type of Internet. Why is it a subversion of the Internet? Because the Internet solves the problem of information transmission, and the blockchain solves the problem of value transmission. Yuanzhongrui's blockchain system has a lot of value transfer in the development of blockchain, such as distributed ledger, decentralized trust, smart contract, etc. What kind of society will it build in the future
the answer is: a distributed business and self disciplined society. Blockchain features first, decentralization; Without the intervention of the third party, it can realize people to people, point-to-point transaction and interaction
Second, information can not be tampered with; Once the data information is written into the block, it cannot be changed or revoked< Thirdly, it is open and transparent; In a very short time, the block information will be copied to all the blocks in the network to realize the data synchronization of the whole network, and each node can trace back all the transaction information of both sides in the past
Fourth, collective maintenance; In the whole blockchain network, all roles work together to maintain the reliability and security of the whole blockchain information
fifthly, reliable database; Only by mastering 51% of the nodes of the whole system can we tamper with the blockchain information, which is obviously impossible, because there are many participants in the whole system, and mastering so many nodes can not be realized at high cost
the characteristics of blockchain bring great opportunities for the financial instry. With the help of blockchain, the transformation of the internal application scenarios of the instry can bring three main benefits:
1) cost rection: communication cost: the centralized trading market generally needs the participation and coordination of the central clearing system, securities companies, exchanges and banks, and the coordination cost is very high, Through the signature and encryption technology of blockchain, the information can be shared and the coordination cost can be reced; Operating costs: recing labor and paper vouchers, improving automation through smart contracts, and centralizing coordination also bring very high operating costs
2) improve efficiency: the settlement cycle is very fast. When the financial transactions realized through blockchain technology are confirmed, they are actually the process of combining clearing, settlement and audit. The openness, transparency and non tamperability of the blockchain can preserve the operation traces, keep the supervision records and audit traces, and provide convenience for supervision and audit
3) risk rection: the transaction confirmation on the chain is the completion of clearing and calculation, which greatly reces the transaction risk. The research and development of blockchain technology application and the development of exchange wallet system app

7. With the increase of news about the combination of blockchain technology and various scenarios, people from all walks of life have been attracted to pay attention to the future market development of blockchain, and the technical team of blockchain application has also begun to enter the public field of vision. For example, Yingtang Zhongchuang, which develops software system solutions based on blockchain technology, has made a comparison of integral application based on blockchain technology, Based on the blockchain technology, establish the small ant of equity crowdfunding. After seeing the application value of blockchain technology, many enterprises have joined in and began to research and apply blockchain technology, forming a trend of contention
in the era of blockchain economy, the proposition of honesty and harmonious society has been put forward at a new height, so in the future, all enterprises who are interested in transforming the world will graally pay attention to it and even directly enter it.

8. Any crowdfunding project is a very high risk investment proct
the blockchain project crowdfunding platform is essentially the same as the traditional equity crowdfunding platform
it can be said that blockchain project crowdfunding is a subcategory of equity crowdfunding
equity crowdfunding is limited by laws and regulations, which limits the number of investors and the amount of investment. At the same time, investors need to be audited. The participation cost and threshold of ordinary people are relatively high, and the target group is high net worth people
the liquidity of equity crowdfunding is poor, and it often takes a long time to exit, and even most of the projects invested in are like drifting away
blockchain crowdfunding is a bit similar to national crowdfunding, because its crowdfunding funds are settled in bitcoin and there are no laws and regulations. Therefore, there are not too many requirements for the number of people and the amount of investment. The investment cost is low, but the threshold is relatively high
because blockchain projects are based on the underlying technology of bitcoin, it is difficult for ordinary people to understand them. In fact, they can be simply regarded as a technical way of distributed collaborative work
the success of blockchain projects in the market is relatively few, so there is no unified reference standard, and the project depends entirely on personal judgment. Settlement is concted in bitcoin, so if you need to participate, your requirement is to accept the high risk threshold of digital currency There are many projects that cheat money)
blockchain crowdfunding has good liquidity. After the emergence of the so-called "token", it can be completely traded out, and the fluctuation risk is also very high
of course, as a technology being studied by the central bank, the blockchain project is worthy of attention, but it also needs to be cautious. As for the ico365 platform, it is recommended that indivials examine their own judgment. There is no evaluation basis for the new platform.

9. Blockchain is also a virtual currency. It is invisible. Money can not be seen without buying and selling money. The current trading of money is different. Some currencies can be traded, while others can not. At present, blockchain market is mixed. It's hard to tell the true from the false...