WO2021163920A1 - Procédé et appareil de fourniture de prix de chaîne de blocs et dispositif terminal - Google Patents

Procédé et appareil de fourniture de prix de chaîne de blocs et dispositif terminal Download PDF

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Publication number
WO2021163920A1
WO2021163920A1 PCT/CN2020/075846 CN2020075846W WO2021163920A1 WO 2021163920 A1 WO2021163920 A1 WO 2021163920A1 CN 2020075846 W CN2020075846 W CN 2020075846W WO 2021163920 A1 WO2021163920 A1 WO 2021163920A1
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Prior art keywords
data
type
price
request
price feed
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PCT/CN2020/075846
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English (en)
Chinese (zh)
Inventor
陈晓东
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深圳市嘉舟科技有限公司
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Priority to PCT/CN2020/075846 priority Critical patent/WO2021163920A1/fr
Publication of WO2021163920A1 publication Critical patent/WO2021163920A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
    • 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
    • G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange

Definitions

  • This application relates to the field of blockchain technology, in particular to a blockchain price feeding method, a blockchain price feeding device and terminal equipment.
  • Blockchain can be regarded as a distributed database based on specific computer protocols (such as consensus mechanism and verification mechanism). Because the computer protocol on the block chain has the characteristic of passively receiving data, the block chain can only obtain the data on the chain, but cannot actively obtain the data outside the chain.
  • the concept of oracle is introduced. Through the oracle machine, the off-chain data of the blockchain can be collected, and the off-chain data can be submitted to the blockchain, and the off-chain data can be written into the blockchain through a computer protocol (such as a smart contract) on the blockchain.
  • a computer protocol such as a smart contract
  • the embodiments of the application provide a blockchain price feeding method, a blockchain price feeding device and terminal equipment, which can solve the problem of easily causing on-chain data fluctuations after feeding off-chain data to the blockchain through an oracle machine, and thereby affect The issue of blockchain stability.
  • an embodiment of the present application provides a blockchain price feeding method, which is applied to a price feeding node, and the method includes:
  • each type of data set For each moment, at least one type of data set is acquired, where each type of data set includes the type of off-chain data at the current moment obtained from multiple off-chain data sources;
  • various types of price feed data are calculated at the current moment, and various types of price feed data at the current moment are submitted to the blockchain to submit a price feed request.
  • the calculation of various types of price feed data at the current moment respectively according to various types of data sets includes:
  • the i-th weight is the proportion of the amount corresponding to the i-th off-chain data in the data set, and the proportion of the amount is the type of off-chain data in the off-chain data source.
  • the submitting a price feed request to the blockchain according to various types of price feed data at the current moment includes:
  • the price feed data of the type at the current time is generated into the price feed of the type Request, and submit the type of price feed request to the blockchain.
  • an embodiment of the present application provides a blockchain pricing method, which is applied to a blockchain node, and the method includes:
  • each type of request set includes all price feed requests of the type in the current block, and each price feed request includes one Feed price data;
  • the separately calculating the consensus data of various types of request sets corresponding to the current block includes:
  • For each type determine the median of the price feed data corresponding to all price feed requests of the type in the current block, and record the median as the consensus data of the request set of the type.
  • each type of request set also includes all price feed requests of the type corresponding to each of the M blocks before the current block, and M is a positive integer ;
  • the calculation of the consensus data of various types of request sets corresponding to the current block respectively includes:
  • the median of the price feed data corresponding to all price feed requests in the request set of the type is determined, and the median is recorded as the consensus data of the price feed request of the type.
  • an embodiment of the present application provides a blockchain price feeding device, which is applied to a price feeding node, and the device includes:
  • the first acquiring unit is configured to acquire at least one type of data set for each moment, where each type of data set includes the type of off-chain at the current moment obtained from multiple off-chain data sources data;
  • the weighting calculation unit is used to calculate various types of price feed data at the current time according to various types of data sets, and submit a price feed request to the blockchain according to the various types of price feed data at the current time.
  • an embodiment of the present application provides a blockchain price feeding device, which is applied to a blockchain node, and the device includes:
  • the second acquiring unit is configured to acquire at least one type of request set corresponding to the current block in the blockchain, wherein each type of request set includes all price feed requests of the type in the current block, each A price feed request includes a price feed data;
  • the consensus data calculation unit is used to calculate the consensus data of various types of request sets corresponding to the current block, and add the consensus data to the current block.
  • an embodiment of the present application provides a terminal device, including a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the processor When the computer-readable instruction is executed, the blockchain price feeding method according to any one of the first aspect or the blockchain price feeding method according to any one of the second aspect is implemented.
  • an embodiment of the present application provides a computer-readable storage medium
  • an embodiment of the present application provides a computer-readable storage medium
  • the computer-readable storage medium stores computer-readable instructions, and is characterized in that: When the computer-readable instructions are executed by a processor, the blockchain price feeding method according to any one of the first aspect or the blockchain price feeding method according to any one of the second aspect is implemented.
  • the embodiments of the present application provide a computer-readable instruction product.
  • the terminal device is caused to execute the blockchain as described in any one of the above-mentioned first aspects.
  • the embodiment of the present application acquires at least one type of data set for each time, where each type of data set includes the type of off-chain data at the current time obtained from multiple off-chain data sources, Using the above method, multiple off-chain data of the same type can be obtained from different data sources, providing a rich data basis for subsequent price feeding; according to various types of data sets, various types of price feeding data at the current moment can be calculated separately For each type, multiple off-chain data corresponding to the type are combined into one price feed data by calculation. Since the price feed data is obtained based on multiple off-chain data, it can reduce an unreliable off-chain data.
  • the impact of the data on the price feed data thereby ensuring the reliability of the price feed data; and then submit a price feed request to the blockchain according to various types of price feed data at the current moment.
  • the data fluctuation caused by unreliable off-chain data to the on-chain data of the blockchain can be avoided during price feeding, thereby ensuring the stability of the blockchain.
  • Figure 1 is a schematic diagram of a blockchain pricing system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a blockchain pricing method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a blockchain pricing method provided by another embodiment of the present application.
  • FIG. 4 is a structural block diagram of the blockchain price feeding device provided by an embodiment of the present application.
  • FIG. 5 is a structural block diagram of a blockchain pricing device provided by another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the term “if” can be construed as “when” or “once” or “in response to determination” or “in response to detecting ".
  • the blockchain price feeding system includes at least one price feeding node 101 and at least one blockchain node 102.
  • the price-feeding node is used to provide price-feeding data to the blockchain
  • the blockchain node is used to process the price-feeding data to obtain consensus data and write the consensus data to the blockchain.
  • the price feed node and the blockchain node can be processors or terminal devices with computing capabilities.
  • data sources are divided into two types, one is the data that exists and on the blockchain, that is, data on the chain; the other is the data that exists and outside the blockchain, that is, off-chain data.
  • the computer protocol on the block chain has the characteristic of passively receiving data, the block chain can only obtain the data on the chain, but cannot actively obtain the data outside the chain.
  • the price feeder node can submit off-chain data to the blockchain, that is, the off-chain data is fed to the blockchain as the price feed data; the blockchain node processes the off-chain data submitted by the price feeder node to get Consensus data, and add the consensus data to the blockchain.
  • the blockchain can obtain off-chain data.
  • the price-feeding authorization can be performed on nodes that meet the authorization conditions among all the blockchain nodes, and the blockchain node after the price-feeding authorization can be used as the price-feeding node.
  • the authorization condition may be that the blockchain node is required to pledge a certain amount of on-chain tokens. If the blockchain nodes that are not authorized to feed the price force the price, the check mechanism on the chain will delete the price feed request submitted by these blockchain nodes.
  • authorization conditions malicious blockchain nodes can be excluded from participating in price feeding, thereby greatly reducing the risk of blockchain being attacked.
  • Fig. 2 shows a schematic flowchart of a blockchain pricing method provided by an embodiment of the present application.
  • the method in the embodiment of Fig. 2 is applied to the price feed node.
  • the method may include the following steps:
  • each type of data set includes the type of off-chain data at the current moment obtained from multiple off-chain data sources.
  • Off-chain data can be the currency value of financial currencies, the unit price of financial derivatives, and so on.
  • the off-chain data source can be currency exchanges and so on.
  • the USD price in Exchange A may be obtained as 6.2
  • the USD price in Exchange B may be obtained as 6.3.
  • the off-chain data are 6.2 and 6.3 respectively, and the corresponding type is USD, that is, the data set corresponding to the US dollar includes two off-chain data, 6.2 and 6.3.
  • other types of off-chain data such as yen can also be obtained at the same time.
  • S202 Calculate various types of price feed data at the current moment respectively according to various types of data sets, and submit a price feed request to the blockchain according to the various types of price feed data at the current moment.
  • the price feed data can change over time.
  • the calculation of various types of price feed data at the current moment according to various types of data sets in step S202 includes:
  • weighted sum processing is performed on all off-chain data in the data set to obtain the price feed data of the type at the current moment.
  • the i-th weight is the proportion of the amount corresponding to the i-th off-chain data in the data set, and the proportion of the amount is the type of off-chain data in the off-chain data source.
  • the current moment corresponds to The data set of is [6.1, 6.2, 6], and the corresponding type of the data set is USD.
  • the feed price data of the dollar at the current moment is 6.1w1+6.2w2+6w3.
  • w1 is the proportion of the dollar amount in Exchange I in the total dollar amount of the three exchanges
  • w2 is the proportion of the dollar amount in Exchange II in the total dollar amount of the three exchanges
  • w3 is the exchange The percentage of the dollar amount in the three exchanges in the total dollar amount in III.
  • submitting a price feed request to the blockchain according to various types of price feed data at the current moment in step S202 includes:
  • the calculation method of the price feed data at the previous moment is the same as the calculation method of the price feed data at the current moment in step S202, and will not be repeated here.
  • the price feed data may not change or change slightly within a certain period of time.
  • the price feed request is submitted. In this way, it is possible to avoid submitting price feed data with little volatility, or submitting the same price feed data repeatedly, which is conducive to saving price feed costs.
  • the embodiment of the present application obtains at least one type of data set for each time, where each type of data set includes the type of off-chain data at the current time obtained from multiple off-chain data sources, Using the above method, multiple off-chain data of the same type can be obtained from different data sources, providing a rich data basis for subsequent price feeding; according to various types of data sets, various types of price feeding data at the current moment can be calculated separately For each type, multiple off-chain data corresponding to the type are combined into one price feed data by calculation. Since the price feed data is obtained based on multiple off-chain data, it can reduce an unreliable off-chain data.
  • the impact of the data on the price feed data thereby ensuring the reliability of the price feed data; and then submit a price feed request to the blockchain according to various types of price feed data at the current moment.
  • the data fluctuation caused by unreliable off-chain data to the on-chain data of the blockchain can be avoided during price feeding, thereby ensuring the stability of the blockchain.
  • Fig. 3 shows a schematic flowchart of a blockchain pricing method provided by another embodiment of the present application.
  • the method in the embodiment of FIG. 3 is applied to a blockchain node.
  • the method may include the following steps:
  • S301 Obtain at least one type of request set corresponding to the current block in the blockchain.
  • each type of request set includes all price feed requests of the type in the current block, and each price feed request includes one price feed data.
  • the time for establishing a block can be preset.
  • the price-feeding node may submit multiple price-feeding requests of the same type.
  • the price feeder node submitted a USD price feed request (corresponding to the price feed data of 6 USD), and in the 2nd s, the price feeder node submitted another USD price feed request (corresponding price feed data) For US$6.1). Then the US dollar type request set corresponding to the block includes the above two price feed requests.
  • S302 Calculate the consensus data of various types of request sets corresponding to the current block, respectively, and add the consensus data to the current block.
  • the method in the embodiment in Figure 2 can effectively prevent the failure or error of a single off-chain data acquisition, but cannot resist at a certain point in time, a certain off-chain data source, especially the off-chain data source with a large weight.
  • the data is manipulated, resulting in a violation of the normal data fluctuations in a short period of time (within a few seconds).
  • step S302 the consensus data of various types of request sets corresponding to the current block are calculated respectively, including:
  • Calculate the median that is, arrange a set of data in ascending order or descending order. If the number of data in the group of data is odd, the data in the middle of the sequence is taken as the median; if the number of data in the group of data is even, the average of the two data in the middle of the sequence is taken as the median number.
  • the median is not easily affected by extreme values.
  • the median in the request set corresponding to the block is taken as the consensus data, which can avoid abnormal data fluctuations in a short period of time, thereby ensuring The stability of consensus data in each block.
  • each type of request set further includes all price feed requests of the type corresponding to each of the M blocks before the current block, and M is a positive integer.
  • the calculation of consensus data of various types of request sets corresponding to the current block in step S302 includes:
  • S22 For each type, determine the median of price feed data corresponding to all price feed requests in the request set of the type, and record the median as the consensus data of the price feed request of the type.
  • step S302 it is equivalent to taking a time sliding window, and then calculating the median of each data in the time sliding window.
  • the size of the time sliding window is the time period used to establish the current block; in S22, the size of the sliding window is the time period used to establish the current block and M blocks before the current block. It can be seen that the time sliding window in S22 is larger, and the consensus data calculated in this way can be relatively stable in a relatively long period of time.
  • This embodiment of the application obtains at least one type of request set corresponding to the current block in the blockchain, where each type of request set includes all price feed requests of the type in the current block, each of which is The price request includes a price feed data.
  • a consensus data is calculated based on multiple price feed requests in the request set corresponding to the type. Since the consensus data is obtained based on multiple price feed requests, it can be Avoid the influence of the price feed data in an unreliable price feed request on the data on the chain, and ensure the stability of the consensus data; and then add the consensus data to the current block.
  • the data fluctuation caused by unreliable off-chain data to the on-chain data of the blockchain can be avoided during price feeding, thereby ensuring the stability of the blockchain.
  • Fig. 4 shows a structural block diagram of the block chain price feeding device provided in an embodiment of the present application. The relevant part of the embodiment.
  • the device 4 includes:
  • the first obtaining unit 41 is configured to obtain at least one type of data set for each time, wherein each type of data set includes the type of chain at the current time obtained from multiple off-chain data sources External data.
  • the weighting calculation unit 42 is configured to calculate various types of weighted data at the current moment according to various types of data sets, and submit a price feed request to the blockchain according to the various types of weighted data at the current moment.
  • the weight calculation unit 42 is further configured to:
  • weighted sum processing is performed on all off-chain data in the data set to obtain the price feed data of the type at the current moment.
  • the i-th weight is the proportion of the amount corresponding to the i-th off-chain data in the data set, and the proportion of the amount is the type of off-chain data in the off-chain data source.
  • the weight calculation unit 42 includes:
  • the obtaining module is used to obtain the price feed data of the type mentioned at the previous moment for each type.
  • the generating module is used to generate the price feed data of the type at the current time if the absolute value of the difference between the price feed data of the type at the previous time and the price feed data of the type at the current time is greater than the preset value.
  • Fig. 5 shows a structural block diagram of a block chain price feeding device provided by another embodiment of the present application. The relevant part of the embodiment of this application.
  • the device 5 includes:
  • the second obtaining unit 51 is configured to obtain at least one type of request set corresponding to the current block in the blockchain, wherein each type of request set includes all price feed requests of the type in the current block, Each price feed request includes a price feed data.
  • the consensus data calculation unit 52 is configured to respectively calculate consensus data of various types of request sets corresponding to the current block, and add the consensus data to the current block.
  • the consensus data calculation unit 52 includes:
  • the first calculation module is used to determine the median of the price feed data corresponding to all price feed requests of the type in the current block for each type, and record the median as the request set of the type Consensus data.
  • each type of request set further includes all price feed requests of the type corresponding to each of the M blocks before the current block, and M is a positive integer.
  • the consensus data calculation unit 52 is also used to:
  • the median of the price feed data corresponding to all price feed requests in the request set of the type is determined, and the median is recorded as the consensus data of the price feed request of the type.
  • the blockchain pricing device shown in Figure 4/5 can be a software unit, a hardware unit, or a combination of software and hardware built into the existing terminal equipment, or it can be integrated into the terminal as an independent pendant. In the device, it can also exist as an independent terminal device.
  • FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 6 of this embodiment includes: at least one processor 60 (only one is shown in FIG. 6), a processor, a memory 61, and a processor that is stored in the memory 61 and can be processed in the at least one processor.
  • the computer-readable instructions 62 running on the processor 60 when the processor 60 executes the computer-readable instructions 62, implement the steps in each of the above-mentioned blockchain pricing method embodiments.
  • the terminal device may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server.
  • the terminal device may include, but is not limited to, a processor and a memory.
  • FIG. 6 is only an example of the terminal device 6 and does not constitute a limitation on the terminal device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. , For example, can also include input and output devices, network access devices, and so on.
  • the so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and the processor 60 may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application specific integrated circuits (Application Specific Integrated Circuits). , ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory 61 may be an internal storage unit of the terminal device 6 in some embodiments, such as a hard disk or a memory of the terminal device 6. In other embodiments, the memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk equipped on the terminal device 6, a smart media card (SMC), a secure digital (Secure Digital, SD) card, flash card (Flash Card), etc. Further, the memory 61 may also include both an internal storage unit of the terminal device 6 and an external storage device.
  • the memory 61 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, for example, the program code of the computer-readable instruction.
  • the memory 61 can also be used to temporarily store data that has been output or will be output.
  • the embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by a processor, they can realize step.
  • the embodiments of the present application provide a computer-readable instruction product.
  • the steps in the foregoing method embodiments can be realized when the mobile terminal is executed.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the implementation of all or part of the processes in the above-mentioned embodiments and methods in this application can be accomplished by instructing relevant hardware through computer-readable instructions, and the computer-readable instructions can be stored in a computer-readable storage medium.
  • the computer-readable instructions are executed by the processor, they can implement the steps of the foregoing method embodiments.
  • the computer-readable instruction includes computer-readable instruction code
  • the computer-readable instruction code may be in the form of source code, object code, executable file, or some intermediate form.
  • the computer-readable medium may include at least any entity or device capable of carrying computer-readable instruction codes to a terminal device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), and a random access memory (RAM, Random Access Memory), electric carrier signal, telecommunications signal and software distribution medium.
  • ROM read-only memory
  • RAM Random Access Memory
  • electric carrier signal telecommunications signal and software distribution medium.
  • U disk mobile hard disk, floppy disk or CD-ROM, etc.
  • computer-readable media cannot be electrical carrier signals and telecommunication signals.
  • the disclosed apparatus/network equipment and method may be implemented in other ways.
  • the device/network device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units.
  • components can be combined or integrated into another system, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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Abstract

La présente invention se rapporte au domaine technique des chaînes de blocs et concerne un procédé et un appareil de fourniture de prix de chaîne de blocs, ainsi qu'un dispositif terminal. Le procédé comprend les étapes suivantes : pour chaque moment, un nœud de fourniture de prix obtient au moins un type d'ensemble de données, calcule respectivement divers types de données de fourniture de prix au moment actuel en fonction de divers types d'ensembles de données, et soumet une demande de fourniture de prix à une chaîne de blocs en fonction des différents types de données de fourniture de prix au moment actuel; et un nœud de chaîne de blocs obtient des données de fourniture de prix d'une pluralité de blocs continus comprenant le bloc actuel, calcule la moyenne des données de fourniture de prix, et utilise la moyenne en tant que données de consensus du bloc courant. Au moyen du procédé, des fluctuations de données provoquées par des données hors chaîne non fiables vers des données en chaîne de la chaîne de blocs peuvent être évitées pendant la fourniture, de telle sorte que la stabilité de la chaîne de blocs est garantie.
PCT/CN2020/075846 2020-02-19 2020-02-19 Procédé et appareil de fourniture de prix de chaîne de blocs et dispositif terminal WO2021163920A1 (fr)

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US20190095880A1 (en) * 2017-09-22 2019-03-28 Kowala Cayman SEZC System and method of distributed, self-regulating, asset-tracking cryptocurrencies
US10354325B1 (en) * 2013-06-28 2019-07-16 Winklevoss Ip, Llc Computer-generated graphical user interface
US20190378128A1 (en) * 2018-06-08 2019-12-12 Rocket Lawyer Incorporated Cryptographic Contract Payment and Dispute Resolution System
CN110727712A (zh) * 2019-10-15 2020-01-24 腾讯科技（深圳）有限公司 基于区块链网络的数据处理方法、装置、电子设备及存储介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10354325B1 (en) * 2013-06-28 2019-07-16 Winklevoss Ip, Llc Computer-generated graphical user interface
US20190095880A1 (en) * 2017-09-22 2019-03-28 Kowala Cayman SEZC System and method of distributed, self-regulating, asset-tracking cryptocurrencies
US20190378128A1 (en) * 2018-06-08 2019-12-12 Rocket Lawyer Incorporated Cryptographic Contract Payment and Dispute Resolution System
CN110727712A (zh) * 2019-10-15 2020-01-24 腾讯科技（深圳）有限公司 基于区块链网络的数据处理方法、装置、电子设备及存储介质

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