WO2018176964A1 - Procédé et appareil de partage de données financières, et dispositif électronique - Google Patents

Procédé et appareil de partage de données financières, et dispositif électronique Download PDF

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WO2018176964A1
WO2018176964A1 PCT/CN2017/120383 CN2017120383W WO2018176964A1 WO 2018176964 A1 WO2018176964 A1 WO 2018176964A1 CN 2017120383 W CN2017120383 W CN 2017120383W WO 2018176964 A1 WO2018176964 A1 WO 2018176964A1
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data
block data
block
financial
generating
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PCT/CN2017/120383
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English (en)
Chinese (zh)
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郝延山
谢锦生
龙旻明
杜衡
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北京京东金融科技控股有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/06—Asset management; Financial planning or analysis

Definitions

  • the present invention relates to the field of financial data analysis and processing, and in particular to a method and apparatus for financial data sharing, and an electronic device and a computer readable medium.
  • Asset-backed securities refers to financial activities in which securities are issued on the basis of standardized product design for credit enhancement, supported by stable cash flows generated by the underlying assets in the future. Since the asset securitization business has been in the market since 2014, the market has grown rapidly and has reached a stock scale of nearly 2 trillion. The asset-based securitization business can fully optimize the financial institution's asset structure, reduce the financial market system risk, release the financial institution's loan scale, increase its capital adequacy ratio, and bring great benefits in improving the financial institution's profit model and accelerating its business transformation. s help. Asset securitization financial products, with its standard product structure and issuance process, structured financial product design, opened up another channel for the financing of consumer finance business. Through standardized ABS products and financing through batch issuance, Internet consumer financial institutions can fully reduce financing costs, revitalize existing assets, and support business continuity. It is estimated that asset securitization financing can reduce the overall financing cost of consumer finance companies by 1-3 percentage points.
  • Asset securitization products are characterized by complex structure, multiple participants, many operational links, long data transmission chains, and complicated data and cash flow distribution processes. It is difficult for investors and intermediaries to penetrate the bottom to grasp risks.
  • the present invention provides a method and apparatus for financial data sharing, and an electronic device and a computer readable medium, which can ensure the authenticity of the underlying data of the asset securitization service provider.
  • a method for financial data sharing comprising: generating first block data according to financial asset data; generating second block data according to the first block data and the audit data; Generating third block data according to the second block data and the payment data; and publishing the third block data to complete the financial data chain code deployment.
  • the first block data, the second block data, and the third block data are confirmed by a consensus mechanism by a consensus algorithm.
  • the consensus algorithm includes a Byzantine fault tolerance algorithm.
  • publishing the third block data to complete the financial data chain code deployment includes publishing the third block data to complete chain code deployment of the federation chain of financial data.
  • generating the first block data according to the financial asset data includes: encapsulating the financial asset data according to the predefined first transaction field to generate the first packaged data; indicating the first processing public Key; indicating a first transaction event; performing signature verification on the first package data, the first process public key, and the first transaction event to generate first block data.
  • generating the first block data according to the financial asset data further includes synchronizing the first block data to the cache database.
  • generating the second block data according to the first block data and the audit data includes: encapsulating the first block data and the audit data according to the predefined second transaction field to generate Second encapsulating data; indicating a second processing public key; indicating a second transaction event; performing signature verification on the second encapsulation data, the second processing public key, and the second transaction event to generate second block data.
  • generating the second block data according to the first block data and the audit data further includes: listening data, acquiring the first block data.
  • generating the second block data according to the first block data and the audit data further includes: synchronizing the second block data to the cache database.
  • generating third block data according to the second block data and the payment data includes: encapsulating the second block data and the payment data according to the predefined third transaction field, generating the first The third encapsulation data indicates a third processing public key; indicates a third transaction event; and performs signature verification on the third encapsulation data, the third processing public key, and the third transaction event to generate third block data.
  • generating third block data according to the second block data and the payment data further includes: listening data, acquiring second block data.
  • generating third block data according to the second block data and the payment data further includes: synchronizing the third block data to the cache database.
  • the method further includes: performing authority control on the first block data, the second block data, and the write data side of the third block data.
  • an apparatus for financial data sharing comprising: a first block module for generating first block data according to financial asset data; and a second block module for Generating second block data according to the first block data and the audit data; a third block module, configured to generate third block data according to the second block data and the payment data; and a chain code deployment module, for The three block data is released to complete the financial data chain code deployment.
  • the first block module, the second block module, and the third block module are confirmed by a consensus mechanism by a consensus algorithm.
  • an electronic device comprising: a processor; a memory storing instructions for the processor to control operations as above.
  • a computer readable medium having stored thereon a computer program, the program being executed by a processor to implement the method of the first aspect of the above embodiments.
  • the method and apparatus for financial data sharing and the electronic device and the computer readable medium according to the present invention can ensure the authenticity of the underlying data of the asset securitization service provider.
  • FIG. 1 is a flow chart showing a method for financial data sharing, according to an exemplary embodiment.
  • FIG. 2 is a flow chart showing a method for financial data sharing, according to another exemplary embodiment.
  • FIG. 3 is a block diagram of an apparatus for financial data sharing, according to an exemplary embodiment.
  • FIG. 4 is a block diagram of an apparatus for financial data sharing, according to an exemplary embodiment.
  • FIG. 5 is a block diagram of an electronic device, according to another exemplary embodiment.
  • FIG. 1 is a flow chart showing a method for financial data sharing, according to an exemplary embodiment.
  • first block data is generated based on the financial asset data.
  • the financial asset data can be, for example, asset related data from the asset side.
  • the asset side represents the assets owned by the enterprise, including fixed assets, current assets, and intangible assets. According to the above, the asset side can process the asset for financial securitization.
  • the asset side can generate the first block data based on its financial asset data. For example, the financial data may be subjected to predetermined encapsulation processing to generate first block data.
  • the predetermined encapsulation process may, for example, comprise: encapsulating the financial asset data according to a predefined first transaction field to generate first encapsulation data; indicating a first processing public key; indicating a first transaction event; and the first encapsulation data And the first processing public key and the first transaction event perform signature verification to generate first block data.
  • second block data is generated based on the first block data and the audit data.
  • the funder may conduct an asset review based on the first block data, for example, reviewing the loan slip, the repayment plan, the audit of the financial asset itself, and the like, and generating audit data after the audit.
  • the signature authentication generates the second block data.
  • third block data is generated based on the second block data and the payment data.
  • the payment channel that is responsible for the financial payment performs the lending operation according to the second block data, generates the payment data after the lending operation, encapsulates the second block data and the payment data, and indicates various related public keys and transaction events.
  • the third block data is generated through signature verification.
  • the third block data is published to complete the financial data chain code deployment.
  • the third block data can be broadcast to the financial system to complete the chain code deployment. It is also possible, for example, to publish the third block data to complete the chain code deployment of the federated chain of financial data.
  • data security is performed by using a chain chain decentralization, tamper resistance, and distributed account book characteristics by way of chain code deployment, once the chain is entered, It cannot be tamed by a single party and can guarantee the authenticity of the underlying data of the asset securitization service provider.
  • the publishing the third block data to complete the financial data chain code deployment comprises: publishing the third block data to complete financial data The chain code deployment of the alliance chain.
  • the blockchain is essentially a collective term for several technical solutions, including peer-to-peer peer-to-peer network transport protocols, cryptographic encryption algorithms, distributed consensus mechanisms, and Nash equilibrium game design. Based on the combination of these technologies, a reliable database of decentralization and trust can be realized, and an algorithmic proof mechanism is used to ensure traceable traceability of information recorded on the chain, which cannot be forged and cannot be tampered with.
  • the alliance blockchain refers to the blockchain whose consensus process is controlled by pre-selected nodes; for example, imagine a community of 15 financial institutions, each of which runs a node, and in order to make each block effective Obtained confirmation from 10 of them (2/3 confirmation).
  • the blockchain may allow everyone to read, or be restricted to participants, or take a hybrid route, such as the root hash of the block and its API (application programming interface), the API allows the outside world to be used Make a limited number of queries and get information about the status of the blockchain.
  • API application programming interface
  • These blockchains can be thought of as "partial decentralization.”
  • the alliance chain adopts a multi-center approach, and the participant nodes are also set in advance and confirmed by a consensus mechanism. In the alliance chain, different from the public chain, you can set and control permissions, and have higher applicability and scalability.
  • multiple verification points are deployed, for example, four verification nodes, an asset side, a fund side, and a money channel side each have a private key, and each verification node
  • a distributed set of ledger databases is deployed locally (or in the cloud).
  • Each transaction in the blockchain management system requires all nodes to reach a consensus before they can be chained.
  • the cost and time of reading and writing in different places can be greatly reduced, and the simpler and more efficient consensus service can be provided, and the inheritance can be realized.
  • the advantages of decentralization reduce the pressure of monopoly.
  • the first block data, the second block data, and the third block data are confirmed by a consensus mechanism by a consensus algorithm.
  • the consensus algorithm includes: a Byzantine fault tolerance algorithm.
  • PBFT is the abbreviation of Practical Byzantine Fault Tolerance, which means Byzantine fault-tolerant algorithm.
  • the algorithm was proposed by Miguel Castro (Castro) and Barbara Liskov (Liskov) in 1999 to solve the problem of the inefficiency of the original Byzantine fault-tolerant algorithm.
  • the POW (Prove of Work) algorithm is too slow to confirm and consumes a lot of resources.
  • the basic idea of the BFT algorithm is as follows: The client sends a series of requests to each replicas node to perform the corresponding operations. The BFT algorithm ensures that all normal replicas nodes perform the same sequence of operations.
  • the method of deploying financial data in a chain code by the Byzantine fault-tolerant algorithm enables the method of financial data sharing to work in an asynchronous mode and speed up the processing of financial data.
  • FIG. 2 is a flow chart showing a method for financial data sharing, according to another exemplary embodiment.
  • the financial asset data is encapsulated according to a predefined first transaction field to generate first encapsulated data.
  • the financial data is processed and packaged according to a predefined transaction field.
  • the first processing public key is indicated.
  • the public key of the next processor is indicated.
  • the first transaction event is indicated. For example, a transaction event to be processed next may be indicated.
  • signature verification is performed on the first package data, the first process public key, and the first transaction event, and the first block data is generated.
  • the generating the first block data according to the financial asset data further includes: synchronizing the first block data to a cache database.
  • the generating the second block data according to the first block data and the audit data includes: packaging the first block data and the according to a predefined second transaction field. Examining the data to generate the second package data; indicating the second process public key; indicating the second transaction event; signing the second package data, the second process public key, and the second transaction event, generating the The second block data is described.
  • the generation of the second block reference may be made to the process of generating the first block data in the above, and details are not described herein again.
  • the generating the second block data according to the first block data and the audit data further includes: listening data, acquiring the first block data, and The two blocks of data are synchronized to the cache database.
  • the generating third block data according to the second block data and the payment data includes: packaging the second block data and the according to a predefined third transaction field. Determining payment data, generating third encapsulated data indicating a third processing public key; indicating a third transaction event; performing signature verification on the third packaged data, the third processed public key, and the third transaction event, generating the Three block data.
  • the generation of the third block reference may be made to the process of generating the first block data in the above, and details are not described herein again.
  • the generating third block data according to the second block data and the payment data further includes: listening data, acquiring the second block data, and The three block data is synchronized to the cache database.
  • the method further includes: performing authority control on the first block data, the second block data, and the write data side of the third block data.
  • the asset side loan flow chart and the asset side repayment process may be performed as described in this embodiment.
  • the transfer, approval, lending and payment of each loan in the financial system is completed by the consensus of the verification nodes through the blockchain. Once a loan has been reviewed by the financial system's investment decision engine and the loan is completed by the designated payment channel, the payment channel will return the transaction flow unique certificate in real time and write it into the blockchain to complete the entry of a loan asset. In this way, the service provider system guarantees the authenticity and non-tamperability of the underlying asset data through the blockchain.
  • FIG. 3 is a block diagram of an apparatus for financial data sharing, according to an exemplary embodiment.
  • the first block module 302 is configured to generate first block data according to the financial asset data.
  • the second block module 304 is configured to generate second block data according to the first block data and the audit data.
  • the third block module 306 is configured to generate third block data according to the second block data and the payment data.
  • the chain code deployment module 308 is configured to publish the third block data to complete financial data chain code deployment.
  • the first block module, the second block module, and the third block module perform a consensus mechanism confirmation by a consensus algorithm.
  • the apparatus for financial data sharing performs data fidelity by means of chain code deployment, using blockchain decentralization, tamper resistance, and distributed ledger characteristics, once entered into the chain, It cannot be tamed by a single party and can guarantee the authenticity of the underlying data of the asset securitization service provider.
  • FIG. 4 is a block diagram of an apparatus for financial data sharing, according to an exemplary embodiment.
  • the device block diagram can be used to implement the functions shown by the method in the above.
  • the architecture is mainly divided into three layers, and the first is a basic service layer, which is mainly composed of a verification node and a non-authentication node, and also includes a member management service. It can realize the functions of identity authentication, rights management, block consensus, etc.
  • the business logic layer on the service layer which can be, for example, chaincode (chain code), deployed on the blockchain, and can be provided through the interface provided by Fabricchaincode.
  • Implement complex business logic and provide deployment, invocation, and query interfaces; third, the application software, the client SDK, which is packaged into a standard interface and can provide functions such as private key storage, transaction signature, data cache, and chain code call.
  • the client SDK which is packaged into a standard interface and can provide functions such as private key storage, transaction signature, data cache, and chain code call.
  • it also provides a blockchain browser, which can realize real-time monitoring of nodes and transactions, which is convenient for intuitive and clear understanding of the current operating state of the system.
  • Fabric has a separate member management module, membersrvc.
  • the username and password of each participant are saved in the custom SDK.
  • the participant's business system calls its custom SDK to initiate the business process.
  • the custom SDK attaches the username and password to the transaction interface, and generates a static registration certificate (ECerts) and saves it to the fabric.
  • Service architecture layer Before sending the REST API request, the business logic layer will receive the user name and password uploaded by the participant's custom SDK, log in to the blockchain, and must provide the corresponding user name to deploy and call the chain code when operating the chain code.
  • FIG. 5 is a block diagram of an electronic device, according to another exemplary embodiment.
  • the electronic device 50 can include a processor 510, a memory 520, a transmitter 530, and a receiver 540.
  • Memory 520 can store instructions for processor 510 to control operational processing.
  • Memory 520 can include volatile or non-volatile memory such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), Programming read only memory (PROM), read only memory (ROM), etc., the invention is not limited thereto.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable programmable read only memory
  • PROM Programming read only memory
  • ROM read only memory
  • Processor 510 can invoke instructions stored in memory 520 to control related operations.
  • the memory 520 stores instructions for the processor 510 to control: generating first block data according to the financial asset data; generating second block data according to the first block data and the audit data; The block data and the payment data generate third block data; and the third block data is published to complete the financial data chain code deployment. It is easy to understand that the memory 520 can also store instructions for the processor 510 to control other operations in accordance with embodiments of the present invention, and details are not described herein.
  • the present application further provides a computer readable medium, which may be included in an electronic device described in the above embodiments, or may be separately present without being assembled into the electronic device.
  • the computer readable medium carries one or more programs that, when executed by one of the electronic devices, cause the electronic device to implement the method of FIGS. 1 and 2 in the above embodiments.
  • modules may be distributed in the device according to the description of the embodiments, or may be correspondingly changed in one or more devices different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • the exemplary embodiments described herein may be implemented by software, or may be implemented by software in combination with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network.
  • a non-volatile storage medium which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a number of instructions are included to cause a computing device (which may be a personal computer, server, mobile terminal, or network device, etc.) to perform a method in accordance with an embodiment of the present invention.
  • the method for financial data sharing of the present invention performs data fidelity by utilizing blockchain decentralization, tamper resistance, and distributed account book characteristics by way of chain code deployment of financial data. After entering the chain, it will not be tamper-proof by the single party, which can guarantee the authenticity of the underlying data of the asset securitization service provider.
  • the method for financial data sharing of the present invention can greatly reduce the cost and time of reading and writing in different places by deploying financial data in a chain code chain manner, thereby providing simpler and more efficient methods. Consensus service, while inheriting the advantages of decentralization, reducing the pressure of monopoly.
  • the method for financial data sharing of the present invention by means of a Byzantine fault-tolerant algorithm for deploying financial data in a chain code, enables the method of financial data sharing to work in an asynchronous mode and accelerates financial data. Processing speed.

Abstract

L'invention concerne un procédé et un appareil permettant de partager des données fiancières, ainsi qu'un dispositif électronique. Le procédé consiste à : générer des premières données de bloc selon des données d'actif financier; générer des deuxièmes données de bloc selon les premières données de bloc et les données d'audit; générer des troisièmes données de bloc selon les deuxièmes données de bloc et les données de paiement; et émettre les troisièmes données de bloc pour terminer le déploiement d'un code de chaîne de données financières. Le procédé et l'appareil de partage de données financières, ainsi que le dispositif électronique, peuvent garantir l'authenticité des données sous-jacentes des fournisseurs de services de sécurisation d'actifs. (Fig. 1: rien à traduire)
PCT/CN2017/120383 2017-03-31 2017-12-30 Procédé et appareil de partage de données financières, et dispositif électronique WO2018176964A1 (fr)

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