CN106530088B - Method for trading certificate products based on blockchain security nodes - Google Patents
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Abstract
A method of transacting a coupon product based on a blockchain security node, comprising: step one, constructing a first data storage system, constructing an asset securitization document in the data storage system, endowing unique hash values to all storage units according to an arrangement sequence, and presenting complete asset securitization document data in one storage unit through one chain; step two, constructing a second data storage system, and recording and storing the certificate transaction; and thirdly, establishing a public account book, and establishing a communication channel between each network node in the first data storage system and each network node in the second data storage system and the public account book. The invention adopts the decentralization transaction record, namely, all data and documents, and transaction records of purchase and hand-turning in the blockchain are completely recorded in the blockchain, and the invention is self-adaptive and self-completed by the blockchain without central management. Its security level is very high and the information stored in the blockchain is also non-tamper-evident.
Description
Technical Field
The invention relates to the technical field of network trading, in particular to a method for trading a certificate product based on a blockchain security node.
Background
From the darwins forum to the international monetary foundation organization, from the national banking digital currency seminar to the hearing of the american commodity futures trade committee, blockchain technology is rapidly moving into public view. The application of blockchain is a trend of international financial science and technology, and a plurality of international financial institutions currently have the field of laying out the blockchain laboratory, investment-related technical company and other modes, wherein the fields comprise more than 30 international financial megaheads such as Nasco, morgan Datong, douglas fir bank, ruiyan group, gao Cheng group and the like.
The blockchain technology is a novel decentralization protocol, can safely store transaction data, is not falsified and tampered, can intelligently execute and contract, and does not need auditing of any decentralization mechanism. The transactions based on blockchain technology can be digital currency, or digital assets such as creditors, equity, copyrights and the like. The application of the blockchain technology greatly reduces the trust cost and the accounting cost of the practical economy, and redefines the property system of the Internet age.
Essentially, a blockchain is a "public ledger" that records all transactions that have occurred across the whole network, and is a method of data storage, transmission and certification that is decentralised and resides in a distributed architecture, theoretically enabling self-certification of data in data transmission. This "decentralised", "distrusted" mechanism reduces the cost of establishing global transaction "credits" in a more profound sense. Blockchain technology may remodel aspects of various currency markets, payment systems, financial services, and economic modalities, which can fundamentally be a new paradigm for organizing active modalities to reduce friction and improve efficiency.
After the global economic crisis of 2007, the western major economic entity recognizes that standard, simple, transparent, comparable management of asset securitization products is a necessary means of stable economy, against structural risks. The disputes in each country have begun to put demands on centralized management and disclosure of the bottom data of securitization of assets, which gradually become an integral part of the trade link.
Disclosure of Invention
First technical problem
However, there are significant limitations to the architecture of the centralized data document management and transaction platform, such as:
1. the development and construction cost is huge, and the development period is long;
2. the data quality and the data security are difficult to ensure;
3. huge manpower and material resources are needed for system maintenance;
4. and based on the information disclosure of the user name and password, the authenticity of the data visitor cannot be authenticated and confirmed;
5. there is no guarantee that the data visitor is a real transaction participant.
(II) technical scheme
The invention provides a method for trading a certificate product based on a blockchain security node, which specifically comprises the following steps:
step one, a first data storage system of a distributed structure is established based on a blockchain technology, an asset securitization document is established in the data storage system, the first data storage system comprises a plurality of storage units formed based on blockchains, asset securitization document data are received, the received asset securitization document data are sequentially stored in the storage units in a time unit, unique hash values are given to all the storage units according to the arrangement sequence, and one complete asset securitization document data are presented in one storage unit through one chain;
establishing a second data storage system with a distributed structure based on a blockchain technology, recording and storing ticket transactions in the second data storage system in unit time, monitoring newly added ticket products in real time, constructing a private chain in the local area of the ticket by a server of the second data storage system, and recording all transaction records of the newly added ticket in the private chain from the issuing;
and thirdly, based on a blockchain technology, establishing a public account book, establishing a communication channel between each network node in the first data storage system and each network node in the second data storage system and the public account book, acquiring transaction action information by each network node, confirming securities transaction by each network node, and recording the transaction into the public account book.
Preferably, based on the above operation steps, the present invention further includes a step four of creating an independent data security access area in the first data storage system, monitoring access to the data security access area in real time, checking a key provided by any network node when the network node accesses the data security access area with a certain characteristic, and when the checked key includes a signature provided by each party in transaction information stored in the accessed data security access area, the access passes.
(III) beneficial effects
In the invention, the distributed database technology is based on the distributed database principle, and adopts the data storage and data transmission of a distributed structure. The distributed database technology enables each participant in the network to have a complete database backup, and the whole distributed account book is transparent and public, so that the whole network information sharing and the information safety storage are realized. The adoption of the decentralization transaction records, namely that in the blockchain, all data and documents and transaction records of purchase and transfer are completely recorded in the blockchain, and the self-adaption and self-completion of the blockchain are realized without central management. Based on the untrusted network, the maintenance and management of single and correct transaction records are completed. Its reliability of use is high and the security level is very high, the information stored in the blockchain is also non-tamper-evident.
Drawings
FIG. 1 is a block diagram of a first data storage system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a second data storage system in accordance with an embodiment of the present invention;
fig. 3 is a schematic diagram of connection of links in a block chain network according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, fig. 1 is a block diagram of a first data storage system according to an embodiment of the invention; FIG. 2 is a block diagram of a second data storage system in accordance with an embodiment of the present invention; fig. 3 is a schematic diagram of connection of links in a block chain network according to an embodiment of the present invention.
The invention has the following fundamental purposes: to effect a de-centralized stock exchange, each participating node in the network may have a complete database backup that fully records each transaction of the stock in the network from the point of release, and all nodes may become "bookkeeping" for the next block.
The invention specifically comprises two parts, namely a blockchain part and a transaction platform part. Wherein the blockchain portion includes: asset securitization document blockchain and asset securitization trade blockchain; the transaction platform part comprises: the centralized local securities trading platform and the centralized big data and complex file trading platform.
With the support of blockchain technology, a data storage system of a distributed structure is established. Data (files, etc.) are stored in different blocks according to different storage (file upload) times, each block can present a complete data through a chain.
With the support of blockchain technology, a data storage system of a distributed structure is established. The securities trade records over different time periods (e.g., every half hour) are stored in different blocks, each of which may represent a complete data by a chain. For each newly issued security product, the de-centralized security trading platform will construct a private chain (blockchain) within the local area that points to the security, which blockchain will complete the record of each transaction record of the security in the network from the start of the issue.
Wherein, hash: a hash value representing each chunk to identify the uniqueness of each chunk; per Hash: representing the hash value of the previous chunk.
As an issuer of the security product (issuing securities over a network on a trading platform), the first block is owned on behalf of the entire trading platform. In addition, the transaction records of the first investor (underwriting) form a second block. Thereafter, in the stock transfer (sales) of the aftermarket, the trade records at regular intervals will be packaged into a new trade block.
In the third step, a controlled data security access area is created, transaction information with a characteristic is stored in the data security access area, the transaction information corresponds to a plurality of participants, namely, a investor location network node, a law office location network node, an accounting office location network node, a bank network node, a rating company network node and the like, signature functions are given to a plurality of network nodes corresponding to the data security access area with the characteristic, a multi-signature secret key is needed when the data security access area is accessed, and the secret key has time limitation and can be used only once. The signature is subjected to signature authentication by all network nodes with signature functions corresponding to the same data security access area.
The management of the key is self-adaptive by the block chain network without independently establishing a centralized system. Wherein the key behaves like a bitlock and contains a piece of key information, multiple signatures are required to complete decryption of the key. When the key is transacted and used, as with the bitlock's Double-flower restriction (Double-Specification), the control right of the key is given to the initiator and cannot be used in the network.
When the initiator needs some specific user to access the DMC Zone, a transaction is initiated, and the key is returned to the network for circulation.
The beneficial effects of the invention are as follows:
decentralised transaction records
In the blockchain, all data, documents and transaction records of purchase and hand-turning are completely recorded in the blockchain, and the transaction records are self-adaptive and self-completed by the blockchain without central management. Based on the untrusted network, the maintenance and management of single and correct transaction records are completed.
Intelligent credit authentication
Based on complete data access and transaction records, intelligent credit authentication for DMC Zones is provided by using a credit distribution model in statistical sense, and identity and credit authentication of data visitors are intelligently managed. For example, the records of the real access data and the transaction of the user can judge the real purchase intention and the real transaction intention of the user or the node; or the credit rating of the user can be intelligently judged according to the historical transaction condition.
Programmed trading and intelligent contract
The transaction rules are determined by programming, avoiding manual intervention. The intelligent contract can ensure fairness and transparency of transactions.
The core technology and innovation points of the invention are as follows:
improved distributed database technology.
The improved distributed database technology is based on the principle of distributed database, and adopts data storage and data transmission of distributed structure. The distributed database technology enables each participant in the network to have a complete database backup, and the whole distributed account book is transparent and public, so that the whole network information sharing and the information safety storage are realized.
Improved distributed database publish and subscribe technology.
The distributed database publishing and subscribing technology can realize the data synchronization (updating) of the whole network database, so that the backup data owned by each participant is always consistent.
Improved time server technology
The time server technology is a high-tech product developed for timing of computers, automation devices, and the like. The time server transmits standard time signals to equipment (such as an event sequence recording device) needing time information in the automation system through various interfaces, so that the time synchronization of the whole system can be achieved.
Based on the time server technology, when a new record (transaction/uploading document) is generated in a distributed database (blockchain system), the time stamps of the new record are equal to each other through the whole network, so that the information of the new record (block) is more accurate.
Workload demonstration (competitive mechanism)
The workload certification mechanism may perfectly implement the pseudo-randomness of the "accounting node". Only if the computational power of a node is greater than the computational power of any other node in the network (enough work is done) may that node have the right to speak to create a new block. The system safety can be better ensured through a competitive mechanism. In the improved workload certification, transaction assurance that the user paid in advance can be utilized as a way of proving the power, increasing the cost of the breach.
Cryptography (SHA 256-based hash improved algorithm)
SHA256 has a certain computational complexity, can truly implement a pseudo-random "accounting" mode (de-signaling), and creates and perfects a blockchain (store blockchain or transaction blockchain) by a workload certification mechanism based on this algorithm. The hash algorithm is employed to achieve the following two functions:
1) Obtaining block hash values
Based on the existing SHA256 algorithm, in the initial stage of building each new block, a character string x with a fixed length is searched for, so that:
SHA256(SHA256(L，x))<＝Target
x satisfying this condition is called the hash random number of the newly added block, and the corresponding SHA256 (L, x)) is the hash value of the newly added block.
Target is a given Target value, and the magnitude of Target will determine the complexity of the operation.
L is a string of some inherent properties of the current block, such as storage, time stamp, transaction amount, etc.
2) Confirmation of "accounting node
Nodes that have the right to create new blocks are validated based on a workload certification mechanism. All nodes on-line can simultaneously find the satisfaction through calculation:
SHA256(SHA256(L，x))<＝Target
the node that first found the x is determined to be the creator of the new chunk, and the corresponding SHA256 (L, x)) is used as the hash value of the new chunk.
Key technology
Based on the key technology, each node in the decentralized transaction system has an account address which is composed of 34-bit English letters and is used for receiving or transmitting data. In addition, each account address will have a 64 character private key associated with the account that is generated based on key technology and can be used to validate information (e.g., transactions, data, etc.).
Multiple signature technique
In conventional transaction models, each account address has only one corresponding private key. Multiple signature techniques may allow three associated private keys to be used for each account address, two of which are required to complete a transaction. The multiple signature technology provides a voluntarily participated' hosting mechanism, and ensures the security of transactions.
Intelligent contract technology
An intelligent contract refers to a computer program that is capable of automatically executing contract terms. Essentially, the operating principles of these autocontracts are similar to If-Then statements in other computer programs.
The intelligent contract is built in a transaction (this project refers to a coupon transaction) payment system, and both transaction sides send assets (including but not limited to digital assets) to a 'neutral account' controlled by the intelligent contract during the transaction, and when a pre-programmed condition is triggered, the intelligent contract executes corresponding contract terms to realize automatic transfer of the assets. The intelligent contract can enable the transaction (settlement and processing) process to be automatic and non-mystery, and in particular, the intelligent contract technology is built in a de-centralized transaction system, so that the transaction is more 'honest', and time and money of a transactor are saved greatly.
Honest node working mechanism
From the hash algorithm of the chunk, we can know that a reasonable chunk is not unique, so the backbone may be bifurcated (Fork). When a bifurcation is encountered, the network elects a "best chain" according to the following principle (honest node working mechanism) "
1) Branches of different lengths always accept the longest branch.
2) Branches with the same length receive the branch with the greatest difficulty.
3) The lengths are the same and the difficulties are consistent, and the receiving time is earliest.
4) If all are the same, wait for the blockchain length to increase by 1 in the order accepted from the network and then reselect the "best chain".
Nodes that operate according to this rule are called Honest Nodes (Honest Nodes).
Nodes may or may not be honest, but based on honest node working mechanisms, their fatalities are always inequality for dishonest nodes wanting to play with the network-wide branches: the system can only add a trunk (which is well proven in the Bitschette white paper of the Zhongben, the smart) and the honest node working mechanism ensures the stability of the distributed accounting system.
The project adopts a blockchain-like technology to provide a decentralized, distributed and big data and complex document management solution. On the basis, a decentralization and distributed document security management system is built. The management mode of big data and documents is decentralised, safe and reliable, and necessary support is provided for accessing and trading data and documents. On the basis, a document block element required by the trading of the securities of the asset is further fixed, and a security trading platform which is decentralised and can realize point-to-point trading is built, so that support is provided for the securities of the asset. The specific targets are as follows:
the first step is: and establishing a block chain technology-based large data and complex document decentralization and distributed management service platform.
The second step is: on the basis of the management service platform, the Internet asset securitization service platform is combined for extension, and an efficient, safe and effective decentralised asset securitization transaction service platform is built by utilizing the blockchain technology.
Other additional technical features of the invention are:
in the aspect of data security access, based on multiple authenticated data access, the data access replacing the user name password is reliable and safe, and the data access can be controlled.
In the aspect of distributed key management, a centralized key system is not needed, and the investment of infrastructure is reduced by using block chain self-adaptive management.
In terms of distributed transaction record management, a centralized transaction management system does not need to be established to reduce infrastructure investment.
In the aspects of intelligent contract and programmed transaction, the transaction cost is reduced, and the transaction is transparent and programmed. Reducing transaction risk.
In terms of intelligent credit authentication, credit authentication based on transaction records and credit statistical models reduces credit risk.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (2)
1. A method of transacting a coupon product based on a blockchain security node, comprising:
step one, a first data storage system of a distributed structure is established based on a blockchain technology, an asset securitization document is established in the data storage system, the first data storage system comprises a plurality of storage units formed based on blockchains, asset securitization document data are received, the received asset securitization document data are sequentially stored in the storage units in a time unit, unique hash values are given to all the storage units according to the arrangement sequence, and one complete asset securitization document data are presented in one storage unit through one chain;
establishing a second data storage system with a distributed structure based on a blockchain technology, recording and storing ticket transactions in the second data storage system in unit time, monitoring newly added ticket products in real time, constructing a private chain in the local area of the ticket by a server of the second data storage system, and recording all transaction records of the newly added ticket in the private chain from the issuing;
and thirdly, based on a blockchain technology, establishing a public account book, establishing a communication channel between each network node in the first data storage system and each network node in the second data storage system and the public account book, acquiring transaction action information by each network node, confirming securities transaction by each network node, and recording the transaction into the public account book.
2. The method of conducting transactions for a credential product based on a blockchain security node of claim 1,
and step four, an independent data security access area is created in the first data storage system, the access of the data security access area is monitored in real time, when any network node accesses the data security access area with a certain characteristic, the key provided by the network node is checked, and when the checked key contains the signature provided by each party in the transaction information stored in the accessed data security access area, the access is passed.
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