CN115906045A - Transaction data processing method, device, equipment and medium based on block chain system - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本申请属于区块链技术领域，尤其涉及一种基于区块链系统的交易数据处理方法、装置、设备及介质。The present application belongs to the technical field of block chain, and in particular relates to a transaction data processing method, device, equipment and medium based on block chain system.
背景技术Background technique
现有的数据交易模型更加关心交易平台的去中心化性，希望通过借助区块链技术，在区块链系统上实现去中心化的数据交易平台。数据交易平台不同于传统商品交易平台，数据交易平台中的商品是电子数据，在交易过程中具有特殊性。The existing data transaction model is more concerned about the decentralization of the transaction platform, hoping to realize a decentralized data transaction platform on the blockchain system with the help of blockchain technology. The data trading platform is different from the traditional commodity trading platform. The commodities in the data trading platform are electronic data, which have particularity in the transaction process.
去中心化的数据交易平台主要有三个技术难点。首先是数据出售方无法向数据购买方展示待出售的数据，因为电子数据容易被复制，进而导致数据被窃取，所以数据购买方也无法提前检查数据是否满足要求。其次，部分交易的数据具有隐私性，如薪资信息，医疗数据，数据出售方不希望直接将源数据出售给对方，但是允许数据购买方在数据集上进行分析计算等等操作。There are three main technical difficulties in the decentralized data trading platform. The first is that the data seller cannot show the data to be sold to the data buyer, because the electronic data is easily copied, which leads to the data being stolen, so the data buyer cannot check whether the data meets the requirements in advance. Secondly, the data of some transactions is private, such as salary information, medical data, and the data seller does not want to directly sell the source data to the other party, but allows the data buyer to perform operations such as analysis and calculation on the data set.
这导致数据验证及数据使用权的出售之间存在难以平衡的矛盾，导致数据的可验证性差，无法确保数据交易的安全性及可靠性。This leads to an unbalanced contradiction between data verification and the sale of data usage rights, resulting in poor verifiability of data, and the inability to ensure the security and reliability of data transactions.
发明内容Contents of the invention
本申请实施例提供了一种基于区块链系统的交易数据处理方法、装置、设备及介质，以解决现有技术中数据的可验证性差，无法确保数据交易的安全性及可靠性的问题。The embodiment of the present application provides a transaction data processing method, device, device, and medium based on a blockchain system to solve the problem of poor data verifiability and inability to ensure the security and reliability of data transactions in the prior art.
本申请实施例的第一方面提供了一种基于区块链系统的交易数据处理方法，所述方法应用于计算节点设备，所述方法包括：The first aspect of the embodiment of the present application provides a transaction data processing method based on a blockchain system, the method is applied to a computing node device, and the method includes:
获取第一客户端发送的交易请求，所述交易请求中携带有数据出售方通过加密信道传输的交易数据及所述交易数据对应的检查校验值，所述第一客户端对应于所述数据出售方；Obtain the transaction request sent by the first client, the transaction request carries the transaction data transmitted by the data seller through the encrypted channel and the check verification value corresponding to the transaction data, and the first client corresponds to the data seller;
响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序；所述目标检查程序由第二客户端创建生成，所述第二客户端对应于数据购买方；In response to the transaction request, under the condition that the target checking program matching the transaction request is retrieved from the block chain system, the target checking program is extracted; the target checking program is created and generated by the second client, The second client corresponds to a data buyer;
基于所述检查校验值，调用所述目标检查程序，对所述交易数据进行正确性检查，得到检查结果，并生成与所述正确性检查对应的数据处理过程证明信息；Based on the check check value, call the target check program, check the correctness of the transaction data, obtain a check result, and generate data processing process certification information corresponding to the correctness check;
将所述数据处理过程证明信息及所述检查结果与所述数据购买方的用户信息进行关联存储至所述区块链系统中。The proof information of the data processing process and the inspection result are associated with the user information of the data buyer and stored in the blockchain system.
本申请实施例的第二方面提供了一种基于区块链系统的交易数据处理装置，包括：The second aspect of the embodiment of the present application provides a transaction data processing device based on a blockchain system, including:
第一获取模块，用于获取第一客户端发送的交易请求，所述交易请求中携带有数据出售方通过加密信道传输的交易数据及所述交易数据对应的检查校验值，所述第一客户端对应于所述数据出售方；The first obtaining module is used to obtain the transaction request sent by the first client, the transaction request carries the transaction data transmitted by the data seller through the encrypted channel and the check verification value corresponding to the transaction data, the first The client corresponds to the data seller;
第二获取模块，用于响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序；所述目标检查程序由第二客户端创建生成，所述第二客户端对应于数据购买方；The second acquisition module is used to extract the target checking program in response to the transaction request, when the target checking program matching the transaction request is retrieved from the block chain system; the target checking program is obtained by The second client is created and generated, and the second client corresponds to the data buyer;
数据处理模块，用于基于所述检查校验值，调用所述目标检查程序，对所述交易数据进行正确性检查，得到检查结果，并生成与所述正确性检查对应的数据处理过程证明信息；A data processing module, configured to call the target check program based on the check check value, check the correctness of the transaction data, obtain a check result, and generate data processing process certification information corresponding to the check correctness ;
存储模块，用于将所述数据处理过程证明信息及所述检查结果与所述数据购买方的用户信息进行关联存储至所述区块链系统中。The storage module is used to associate and store the certification information of the data processing process, the inspection result and the user information of the data buyer into the blockchain system.
本申请实施例的第三方面提供了一种计算机设备，包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第一方面所述方法的步骤。A third aspect of the embodiments of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program The steps of the method described in the first aspect are realized.
本申请实施例的第四方面提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述方法的步骤。A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.
本申请的第五方面提供了一种计算机程序产品，当所述计算机程序产品在计算机设备上运行时，使得所述计算机设备执行上述第一方面所述方法的步骤。A fifth aspect of the present application provides a computer program product, which, when running on a computer device, causes the computer device to execute the steps of the method described in the first aspect above.
由上可见，本申请实施例中，在数据出售方向数据购买方出售数据时，借助于区块链系统存储由数据购买方提供的检查程序，同时借助于计算节点进行交易数据的获取及检查程序的检索提取，为数据交易过程提供可验证计算和隐私计算，能够实现隐私数据交易的可验证性及数据的安全不泄露，确保交易双方在数据交易处理中的安全性及可靠性，保护交易双方的利益。It can be seen from the above that in the embodiment of this application, when the data seller sells data to the data buyer, the check program provided by the data buyer is stored with the help of the blockchain system, and at the same time, the transaction data is obtained and the check program is performed with the help of computing nodes Retrieval and extraction provide verifiable calculation and privacy calculation for the data transaction process, which can realize the verifiability of private data transactions and the security of data without disclosure, ensure the security and reliability of both parties in data transaction processing, and protect both parties Interests.
附图说明Description of drawings
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.
图1是本申请实施例提供的一种基于区块链系统的交易数据处理方法的流程图一；Fig. 1 is a flowchart one of a transaction data processing method based on a blockchain system provided by an embodiment of the present application;
图2是本申请实施例提供的基于区块链系统的交易数据处理方法的交互示意图；FIG. 2 is an interactive schematic diagram of a transaction data processing method based on a blockchain system provided by an embodiment of the present application;
图3是本申请实施例提供的一种基于区块链系统的交易数据处理方法的流程图二；Fig. 3 is a flow chart 2 of a transaction data processing method based on a blockchain system provided by an embodiment of the present application;
图4是本申请实施例提供的一种基于区块链系统的交易数据处理装置的结构图；FIG. 4 is a structural diagram of a transaction data processing device based on a blockchain system provided by an embodiment of the present application;
图5是本申请实施例提供的一种计算机设备的结构图。Fig. 5 is a structural diagram of a computer device provided by an embodiment of the present application.
具体实施方式Detailed ways
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中，省略对众所周知的系统、装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
应当理解，当在本说明书和所附权利要求书中使用时，术语“包括”指示所描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其它特征、整体、步骤、操作、元素、组件和/或其集合的存在或添加。It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude one or more other features. , whole, step, operation, element, component and/or the presence or addition of a collection thereof.
还应当理解，在此本申请说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本申请。如在本申请说明书和所附权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。It should also be understood that the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.
还应当进一步理解，在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。It should also be further understood that the term "and/or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .
如在本说明书和所附权利要求书中所使用的那样，术语“如果”可以依据上下文被解释为“当...时”或“一旦”或“响应于确定”或“响应于检测到”。类似地，短语“如果确定”或“如果检测到[所描述条件或事件]”可以依据上下文被解释为意指“一旦确定”或“响应于确定”或“一旦检测到[所描述条件或事件]”或“响应于检测到[所描述条件或事件]”。As used in this specification and the appended claims, the term "if" may be construed as "when" or "once" or "in response to determining" or "in response to detecting" depending on the context . Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, to mean "once determined" or "in response to the determination" or "once detected [the described condition or event] ]” or “in response to detection of [described condition or event]”.
具体实现中，本申请实施例中描述的计算机设备包括但不限于诸如具有触摸敏感表面(例如，触摸屏显示器和/或触摸板)的移动电话、膝上型计算机或平板计算机之类的其它便携式设备。还应当理解的是，在某些实施例中，所述设备并非便携式通信设备，而是具有触摸敏感表面(例如，触摸屏显示器和/或触摸板)的台式计算机。In specific implementations, the computer devices described in the embodiments of the present application include, but are not limited to, other portable devices such as mobile phones, laptop computers or tablet computers with touch-sensitive surfaces (for example, touch screen displays and/or touchpads) . It should also be appreciated that in some embodiments, the device is not a portable communication device, but a desktop computer with a touch-sensitive surface (eg, a touchscreen display and/or a touchpad).
在接下来的讨论中，描述了包括显示器和触摸敏感表面的计算机设备。然而，应当理解的是，计算机设备可以包括诸如物理键盘、鼠标和/或控制杆的一个或多个其它物理用户接口设备。In the discussion that follows, a computer device including a display and a touch-sensitive surface is described. It should be understood, however, that a computer device may include one or more other physical user interface devices such as a physical keyboard, mouse, and/or joystick.
计算机设备支持各种应用程序，例如以下中的一个或多个：绘图应用程序、演示应用程序、文字处理应用程序、网站创建应用程序、盘刻录应用程序、电子表格应用程序、游戏应用程序、电话应用程序、视频会议应用程序、电子邮件应用程序、即时消息收发应用程序、锻炼支持应用程序、照片管理应用程序、数码相机应用程序、数字摄影机应用程序、web浏览应用程序、数字音乐播放器应用程序和/或数字视频播放器应用程序。The computer device supports various applications, such as one or more of the following: drawing application, presentation application, word processing application, website creation application, disk burning application, spreadsheet application, gaming application, telephone applications, video conferencing applications, email applications, instant messaging applications, exercise support applications, photo management applications, digital camera applications, digital video camera applications, web browsing applications, digital music player applications and/or digital video player applications.
可以在计算机设备上执行的各种应用程序可以使用诸如触摸敏感表面的至少一个公共物理用户接口设备。可以在应用程序之间和/或相应应用程序内调整和/或改变触摸敏感表面的一个或多个功能以及计算机设备上显示的相应信息。这样，计算机设备的公共物理架构(例如，触摸敏感表面)可以支持具有对用户而言直观且透明的用户界面的各种应用程序。Various applications that can execute on a computer device can use at least one common physical user interface device, such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and corresponding information displayed on the computer device may be adjusted and/or changed between applications and/or within the respective applications. In this way, the common physical architecture (eg, touch-sensitive surface) of a computer device can support various applications with a user interface that is intuitive and transparent to the user.
应理解，本实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should be understood that the sequence numbers of the steps in this embodiment do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.
为了说明本申请所述的技术方案，下面通过具体实施例来进行说明。In order to illustrate the technical solutions described in this application, specific examples are used below to illustrate.
参见图1，图1是本申请实施例提供的一种基于区块链系统的交易数据处理方法的流程图一。如图1所示，一种基于区块链系统的交易数据处理方法，该方法应用于计算节点设备。Referring to Fig. 1, Fig. 1 is a flow chart 1 of a transaction data processing method based on a blockchain system provided by an embodiment of the present application. As shown in Figure 1, a transaction data processing method based on a blockchain system is applied to computing node devices.
该计算节点设备具体可以是一台计算机设备。在实施过程中，该计算节点设备可以是区块链系统中的一个节点设备或者是独立于区块链系统的服务器节点设备。可以根据需要进行设定，并不以此为限。The computing node device may specifically be a computer device. During implementation, the computing node device may be a node device in the blockchain system or a server node device independent of the blockchain system. It can be set as required, and is not limited thereto.
具体地，上述方法包括以下步骤：Specifically, the above method includes the following steps:
步骤101，获取第一客户端发送的交易请求。
其中，交易请求中携带有数据出售方通过加密信道传输的交易数据及所述交易数据对应的检查校验值。该第一客户端对应于数据出售方。Wherein, the transaction request carries the transaction data transmitted by the data seller through the encrypted channel and the check verification value corresponding to the transaction data. The first client corresponds to a data seller.
该过程中，数据出售方负责提供待出售的源数据(即交易数据)和检查校验值，具体可以是与交易数据对应的哈希值，通过调用特定的检查程序，来证明数据的正确性。In this process, the data seller is responsible for providing the source data to be sold (that is, the transaction data) and checking the verification value, which can be the hash value corresponding to the transaction data, and proving the correctness of the data by calling a specific checking program .
在一个实施方案中，上述基于区块链系统的交易数据处理方法中主要涉及四类成员，分别是数据购买方，数据出售方，区块链系统节点设备，计算节点设备。In one embodiment, the transaction data processing method based on the blockchain system mainly involves four types of members, namely data buyers, data sellers, blockchain system node devices, and computing node devices.
结合图2所示，数据购买方在与数据出售方之间进行交易过程中，需要借助于计算节点及区块链系统中的区块链节点来实现。As shown in Figure 2, in the transaction process between the data buyer and the data seller, it needs to rely on computing nodes and blockchain nodes in the blockchain system.
具体地，其中区块链节点和计算节点作为整个系统架构中的基础设施，可供数据购买方用户及数据出售方用户使用。区块链节点之间共同组成了一个共识网络(即区块链系统网络)，该网络维护一个分布式账本，保证其中所存储数据的一致性及不可篡改性。其中，计算节点可以设置支持Intel SGX(Intel Software Guard Extensions，Intel软件保护扩展)功能，负责对数据进行检查。Specifically, as the infrastructure in the entire system architecture, blockchain nodes and computing nodes can be used by data buyers and data sellers. The blockchain nodes together form a consensus network (that is, the blockchain system network), which maintains a distributed ledger to ensure the consistency and immutability of the data stored in it. Among them, the computing node can be set to support the Intel SGX (Intel Software Guard Extensions, Intel Software Guard Extensions) function, which is responsible for checking the data.
可选地，在本申请实施例的一个实施方式中，计算节点需要从共识网络中取回检查程序，再接受数据出售方的秘密输入，即可完成数据检查计算，并生成一份证明。Optionally, in an implementation of the embodiment of this application, the calculation node needs to retrieve the check program from the consensus network, and then accept the secret input from the data seller to complete the data check calculation and generate a certificate.
其中，数据购买方是检查程序的创建者，通过自然编程语言编写特定检查程序，编译为算术电路，发布到共识网络中。Among them, the data buyer is the creator of the inspection program, who writes a specific inspection program through natural programming language, compiles it into an arithmetic circuit, and publishes it to the consensus network.
不同地，在一个可选的实施方式中，在获取第一客户端发送的交易请求之前，还包括：Differently, in an optional implementation manner, before obtaining the transaction request sent by the first client, it also includes:
拉取缓存至本地的身份认证证书信息；Pull the cached local authentication certificate information;
基于所述身份认证证书信息，对所述计算节点设备进行身份认证，并在身份认证通过的情况下，获取所述计算节点设备的设备信息，将所述设备信息写入至已注册节点列表中。Perform identity authentication on the computing node device based on the identity authentication certificate information, and obtain device information of the computing node device if the identity authentication passes, and write the device information into the registered node list .
上述过程，对应于系统架构正式运行前需要进行的初始化设置过程。The above process corresponds to the initial setting process that needs to be performed before the system architecture is officially operated.
初始化设置包括计算节点的注册处理，可以验证计算节点是否支持Intel SGX功能。通常而言Intel SGX功能需要通过远程证明来验证，具体是需要与Intel IAS(International Attestation Services，国际认证服务)进行交互。为了避免硬件厂商对功能证明过程的影响，本申请实施例中，采用了本地服务来验证可信硬件(即计算节点)的身份。通过拉取认证对应的证书缓存，可以在系统本地实现对应的验证功能。该过程只需要在系统初始化进行一次操作即可，随后Intel IAS服务将不会对系统本地验证服务产生影响。The initialization settings include the registration process of the computing node, which can verify whether the computing node supports the Intel SGX function. Generally speaking, Intel SGX functions need to be verified through remote attestation, specifically, they need to interact with Intel IAS (International Attestation Services, International Authentication Service). In order to avoid the influence of the hardware manufacturer on the function certification process, in the embodiment of the present application, a local service is used to verify the identity of the trusted hardware (that is, the computing node). By pulling the certificate cache corresponding to the authentication, the corresponding verification function can be implemented locally in the system. This process only needs to be performed once during system initialization, and then the Intel IAS service will not affect the local authentication service of the system.
步骤102，响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序。
其中，目标检查程序由第二客户端创建生成，所述第二客户端对应于数据购买方。Wherein, the target checking program is created and generated by the second client, and the second client corresponds to the data purchaser.
该过程中，在数据出售方向数据购买方出售数据时，借助于区块链系统存储由数据购买方提供的检查程序，同时借助于计算节点进行交易数据的获取及检查程序的检索提取，以能够实现隐私数据交易的可验证性，确保交易双方在数据交易处理中的安全性及可靠性，能够保护数据出售方的数据隐私性，同时避免数据购买方被数据出售方用虚假的数据欺骗。In this process, when the data seller sells data to the data buyer, the check program provided by the data buyer is stored with the help of the blockchain system, and at the same time, the transaction data is acquired and the check program is retrieved and extracted with the help of computing nodes, so as to be able to Realize the verifiability of private data transactions, ensure the security and reliability of both parties in the data transaction processing, protect the data privacy of the data seller, and prevent the data buyer from being deceived by the data seller with false data.
其中，从区块链系统中检索出与所述交易请求匹配的目标检查程序，可以是进行索引字符比对来实现，或者是对设定关键词进行匹配来实现。Wherein, retrieving the target inspection program matching the transaction request from the blockchain system may be achieved by comparing index characters, or by matching set keywords.
在一个可选的实施方式中，区块链系统中存储有多个检查程序及与各个所述检查程序对应的描述信息，所述描述信息中包括各个检查程序的存储地址。In an optional implementation manner, multiple inspection programs and description information corresponding to each inspection program are stored in the block chain system, and the description information includes the storage address of each inspection program.
其中，描述信息中还可以包括检查程序对应的数据购买方的用户ID、检查程序的名称、大小、版本等信息。Wherein, the description information may also include information such as the user ID of the data buyer corresponding to the inspection program, the name, size, and version of the inspection program.
数据购买方首先需要部署特定的检查程序，发送到区块链系统中。区块链系统中各个节点经过共识，将程序写入本地数据库中，同时为该检查程序生成一个地址，以便后续进行检索。The data buyer first needs to deploy a specific inspection program and send it to the blockchain system. Each node in the blockchain system writes the program into the local database through consensus, and at the same time generates an address for the inspection program for subsequent retrieval.
在响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序时，具体包括：In response to the transaction request, when the target inspection program matching the transaction request is retrieved from the blockchain system, when extracting the target inspection program, it specifically includes:
响应于所述交易请求，在基于所述描述信息从所述区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，基于所述目标检查程序对应的目标存储地址，提取所述目标检查程序。In response to the transaction request, when the target checking program matching the transaction request is retrieved from the blockchain system based on the description information, based on the target storage address corresponding to the target checking program, extract The target checker.
实现从区块链系统中存储的多个检查程序中对目标检查程序的准确获取。Accurate acquisition of the target inspection program from multiple inspection programs stored in the blockchain system is realized.
步骤103，基于所述检查校验值，调用所述目标检查程序，对所述交易数据进行正确性检查，得到检查结果，并生成与所述正确性检查对应的数据处理过程证明信息。
其中，与正确性检查对应的数据处理过程证明信息，具体可以是生成与基于检查校验值，调用目标检查程序，对交易数据进行正确性检查的这一数据处理过程的零知识证明信息。Among them, the proof information of the data processing process corresponding to the correctness check may specifically be the zero-knowledge proof information of the data processing process of generating and calling the target check program based on the check check value to check the correctness of the transaction data.
对应地，在一个可选的实施方式中，在生成与所述正确性检查对应的数据处理过程证明信息之前，也需要进行初始化配置，具体包括：Correspondingly, in an optional implementation manner, before generating the data processing process certification information corresponding to the correctness check, an initialization configuration is also required, specifically including:
在所述区块链系统中的目标节点中进行秘钥初始化，所述秘钥用于生成与所述正确性检查对应的数据处理过程证明信息。The secret key is initialized in the target node in the block chain system, and the secret key is used to generate the data processing process certification information corresponding to the correctness check.
其中，所述秘钥每更新一次，更新后的所述秘钥的写入节点变更为所述区块链系统中的其他节点。Wherein, each time the secret key is updated, the writing node of the updated secret key is changed to other nodes in the blockchain system.
该过程，在实施中，具体是对零知识证明zk-STARK进行初始化，需要在某个区块链系统中的某个区块链节点中写入初始化的密钥，后续的数据处理都可以使用该密钥。This process, in the implementation, is specifically to initialize the zero-knowledge proof zk-STARK. It is necessary to write the initialized key in a certain blockchain node in a certain blockchain system, and subsequent data processing can be used the key.
且该密钥可以更新，每更新一次则在新的区块链节点中写入密钥，作为区块链系统的一个最新检查点，保证了某个密钥被攻破后，可以及时确保密钥的有效性。And the key can be updated. Every time it is updated, the key is written in the new blockchain node. As a latest checkpoint of the blockchain system, it ensures that the key can be guaranteed in time after a certain key is compromised. effectiveness.
上述实施方案针对数据的可验证性问题进行改进，为交易中的数据提供正确性验证服务，保护了数据买方的利益，防止买方被虚假数据欺骗。且同时保护数据卖方的隐私，使得数据卖方在交易过程中不会担心数据泄露或被盗窃等问题。The above implementation plan improves the verifiability of data, provides correctness verification services for data in transactions, protects the interests of data buyers, and prevents buyers from being deceived by false data. And at the same time protect the privacy of the data seller, so that the data seller will not worry about data leakage or theft during the transaction process.
步骤104，将所述数据处理过程证明信息及所述检查结果与所述数据购买方的用户信息进行关联存储至所述区块链系统中。
一个或多个数据交易方向计算节点通过加密信道传输各自的数据。计算节点获取到检查程序和数据输入后，经过计算得出检查结果和与检查结果对应的哈希值，并为该检查计算过程生成零知识证明信息。随后该零知识证明信息和与检查结果对应的哈希值将会被上传到区块链系统上进行不可篡改存储。One or more data transactions transmit their respective data to computing nodes through encrypted channels. After the calculation node obtains the check program and data input, it calculates the check result and the hash value corresponding to the check result, and generates zero-knowledge proof information for the check calculation process. Then the zero-knowledge proof information and the hash value corresponding to the inspection result will be uploaded to the blockchain system for non-tamperable storage.
本申请实施例中，在数据出售方向数据购买方出售数据时，借助于区块链系统存储由数据购买方提供的检查程序，同时借助于计算节点进行交易数据的获取及检查程序的检索提取，为数据交易过程提供可验证计算和隐私计算，能够实现隐私数据交易的可验证性及数据的安全不泄露，确保交易双方在数据交易处理中的安全性及可靠性，保护交易双方的利益。In the embodiment of this application, when the data seller sells data to the data buyer, the check program provided by the data buyer is stored by means of the block chain system, and at the same time, the acquisition of transaction data and the retrieval and extraction of the check program are performed by means of computing nodes. Provide verifiable computing and privacy computing for the data transaction process, which can realize the verifiability of private data transactions and the security of data without disclosure, ensure the security and reliability of both parties in the data transaction processing, and protect the interests of both parties.
本申请实施例中还提供了基于区块链系统的交易数据处理方法的不同实施方式。The embodiments of the present application also provide different implementations of transaction data processing methods based on the blockchain system.
参见图3，图3是本申请实施例提供的一种基于区块链系统的交易数据处理方法的流程图二。如图3所示，一种基于区块链系统的交易数据处理方法，该方法包括以下步骤：Referring to FIG. 3 , FIG. 3 is the second flowchart of a transaction data processing method based on a blockchain system provided by an embodiment of the present application. As shown in Figure 3, a transaction data processing method based on a block chain system, the method includes the following steps:
步骤301，获取第一客户端发送的交易请求。
其中，交易请求中携带有数据出售方通过加密信道传输的交易数据及所述交易数据对应的检查校验值，所述第一客户端对应于数据出售方。Wherein, the transaction request carries the transaction data transmitted by the data seller through an encrypted channel and the check verification value corresponding to the transaction data, and the first client corresponds to the data seller.
该步骤的实现过程与前述实施方式中的步骤101的实现过程相同，此处不再赘述。The implementation process of this step is the same as the implementation process of
步骤302，响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序。
其中，目标检查程序由第二客户端创建生成，所述第二客户端对应于数据购买方。Wherein, the target checking program is created and generated by the second client, and the second client corresponds to the data purchaser.
该步骤的实现过程与前述实施方式中的步骤102的实现过程相同，此处不再赘述。The implementation process of this step is the same as the implementation process of
步骤303，基于所述检查校验值，调用所述目标检查程序，对所述交易数据进行正确性检查，得到检查结果，并生成与所述正确性检查对应的数据处理过程证明信息。Step 303: Based on the check check value, call the target check program, check the correctness of the transaction data, obtain a check result, and generate data processing process certification information corresponding to the check correctness.
该步骤的实现过程与前述实施方式中的步骤103的实现过程相同，此处不再赘述。The implementation process of this step is the same as the implementation process of
步骤304，将所述数据处理过程证明信息及所述检查结果与所述数据购买方的用户信息进行关联存储至所述区块链系统中。
该步骤的实现过程与前述实施方式中的步骤104的实现过程相同，此处不再赘述。The implementation process of this step is the same as the implementation process of
步骤305，将关联存储的所述数据处理过程证明信息、所述检查结果及所述数据购买方的用户信息输出至所述第二客户端。
在将数据处理过程证明信息及检查结果与数据购买方的用户信息进行关联存储至区块链系统中后，可以选择将区块链系统中关联存储的该些数据对所有参与者可见。After correlating and storing the proof information and inspection results of the data processing process and the user information of the data buyer into the blockchain system, you can choose to make the data associated and stored in the blockchain system visible to all participants.
或者，也可以将关联存储的该些信息，基于其中数据购买方的用户信息，将其发送至对应数据购买方的第二客户端。Alternatively, the associated stored information may also be sent to the second client corresponding to the data buyer based on the user information of the data buyer.
进一步地，在将关联存储的所述数据处理过程证明信息、所述检查结果及所述数据购买方的用户信息输出至所述第二客户端之后，还包括：Further, after outputting the associated stored certification information of the data processing process, the inspection result and the user information of the data buyer to the second client, the method further includes:
检测所述数据购买方基于所述第二客户端触发的交易支付操作；Detecting a transaction payment operation triggered by the data buyer based on the second client;
将所述交易支付操作进行操作存证，并将操作存证数据存储至所述区块链系统中。The transaction payment operation is stored as an operation certificate, and the operation certificate data is stored in the block chain system.
可选地，在一个实施例中，在将关联存储的所述数据处理过程证明信息、所述检查结果及所述数据购买方的用户信息输出至所述第二客户端之后，还包括：Optionally, in an embodiment, after outputting the associated stored certification information of the data processing process, the inspection result, and the user information of the data buyer to the second client, the method further includes:
获取所述数据出售方基于所述第一客户端触发的数据交付指令；Acquiring a data delivery instruction triggered by the data seller based on the first client;
响应于所述数据交付指令，将所述交易数据通过加密信道输出至所述第二客户端。In response to the data delivery instruction, output the transaction data to the second client through an encrypted channel.
上述实施过程中，当数据购买方发现区块链系统上与之相关的交易数据已经被检查验证后，即可借助于区块链系统向数据出售方进行付款，实现付款操作的不可篡改记录。而在数据出售方确认收到对方的付款后，可以通过加密信道向数据购买方交付交易数据。In the above implementation process, when the data buyer finds that the transaction data related to it on the blockchain system has been checked and verified, he can use the blockchain system to make payment to the data seller to realize the non-tamperable record of the payment operation. After the data seller confirms receipt of the other party's payment, the transaction data can be delivered to the data buyer through an encrypted channel.
具体地，在向数据购买方交付交易数据时，可以同时附上交易数据的哈希值以及对应的签名。Specifically, when the transaction data is delivered to the data buyer, the hash value of the transaction data and the corresponding signature can be attached at the same time.
在可选的实施过程中，在交易数据交付过程中可以设定会受到可信第三方(TTP)的监督，如果数据购买方对交易数据的数据真实性有异议，可以向TTP申请裁决，而TTP可以公平的判定哪一方有欺诈行为，欺诈者会受到相应的惩罚。In the optional implementation process, it can be set to be supervised by a trusted third party (TTP) during the transaction data delivery process. If the data buyer has any objection to the authenticity of the transaction data, it can apply to the TTP for a ruling, and TTP can fairly determine which party has committed fraud, and the fraudster will be punished accordingly.
本申请实施例中，在数据出售方向数据购买方出售数据时，借助于区块链系统存储由数据购买方提供的检查程序，同时借助于计算节点进行交易数据的获取及检查程序的检索提取，为数据交易过程提供可验证计算和隐私计算，并最终实现可靠有效的交易支付及交易数据交付的处理过程，能够实现隐私数据交易的可验证性，确保交易双方在数据交易处理中的安全性及可靠性，保护交易双方的利益。In the embodiment of this application, when the data seller sells data to the data buyer, the check program provided by the data buyer is stored by means of the block chain system, and at the same time, the acquisition of transaction data and the retrieval and extraction of the check program are performed by means of computing nodes. Provide verifiable calculation and privacy calculation for the data transaction process, and finally realize the reliable and effective transaction payment and transaction data delivery process, which can realize the verifiability of privacy data transactions, and ensure the security and security of both parties in the data transaction processing. Reliability, to protect the interests of both parties to the transaction.
参见图4，图4是本申请实施例提供的一种基于区块链系统的交易数据处理装置的结构图，为了便于说明，仅示出了与本申请实施例相关的部分。Referring to Fig. 4, Fig. 4 is a structural diagram of a transaction data processing device based on a blockchain system provided by the embodiment of the present application. For the convenience of description, only the parts related to the embodiment of the present application are shown.
所述基于区块链系统的交易数据处理装置400包括：The transaction
第一获取模块401，用于获取第一客户端发送的交易请求，所述交易请求中携带有数据出售方通过加密信道传输的交易数据及所述交易数据对应的检查校验值，所述第一客户端对应于数据出售方；The first obtaining
第二获取模块402，用于响应于所述交易请求，在从区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，提取所述目标检查程序；所述目标检查程序由第二客户端创建生成，所述第二客户端对应于数据购买方；The second acquiring
数据处理模块403，用于基于所述检查校验值，调用所述目标检查程序，对所述交易数据进行正确性检查，得到检查结果，并生成与所述正确性检查对应的数据处理过程证明信息；The
存储模块404，用于将所述数据处理过程证明信息及所述检查结果与所述数据购买方的用户信息进行关联存储至所述区块链系统中。The
其中，所述区块链系统中存储有多个检查程序及与各个所述检查程序对应的描述信息，所述描述信息中包括各个检查程序的存储地址，所述第二获取模块402，具体用于：Wherein, the block chain system stores a plurality of inspection programs and description information corresponding to each inspection program, the description information includes the storage address of each inspection program, and the
响应于所述交易请求，在基于所述描述信息从所述区块链系统中检索出与所述交易请求匹配的目标检查程序的情况下，基于所述目标检查程序对应的目标存储地址，提取所述目标检查程序。In response to the transaction request, when the target checking program matching the transaction request is retrieved from the blockchain system based on the description information, based on the target storage address corresponding to the target checking program, extract The target checker.
该装置还包括：The unit also includes:
输出模块，用于将关联存储的所述数据处理过程证明信息、所述检查结果及所述数据购买方的用户信息输出至所述第二客户端。An output module, configured to output the associated stored certification information of the data processing process, the inspection result, and the user information of the data buyer to the second client.
该装置还包括：The unit also includes:
支付存证模块，用于：The payment certificate module is used for:
检测所述数据购买方基于所述第二客户端触发的交易支付操作；Detecting a transaction payment operation triggered by the data buyer based on the second client;
将所述交易支付操作进行操作存证，并将操作存证数据存储至所述区块链系统中。The transaction payment operation is stored as an operation certificate, and the operation certificate data is stored in the block chain system.
该装置还包括：The unit also includes:
数据交付模块，用于：Data delivery module for:
获取所述数据出售方基于所述第一客户端触发的数据交付指令；Acquiring a data delivery instruction triggered by the data seller based on the first client;
响应于所述数据交付指令，将所述交易数据通过加密信道输出至所述第二客户端。In response to the data delivery instruction, output the transaction data to the second client through an encrypted channel.
其中，该装置还包括：Among them, the device also includes:
初始化模块，用于：Initialize the module for:
在所述区块链系统中的目标节点中进行秘钥初始化，所述秘钥用于生成与所述正确性检查对应的数据处理过程证明信息；Initializing the secret key in the target node in the blockchain system, the secret key is used to generate the data processing process certification information corresponding to the correctness check;
其中，所述秘钥每更新一次，更新后的所述秘钥的写入节点变更为所述区块链系统中的其他节点。Wherein, each time the secret key is updated, the writing node of the updated secret key is changed to other nodes in the blockchain system.
其中，该初始化模块，还用于：Among them, the initialization module is also used for:
拉取缓存至本地的身份认证证书信息；Pull the cached local authentication certificate information;
基于所述身份认证证书信息，对所述计算节点设备进行身份认证，并在身份认证通过的情况下，获取所述计算节点设备的设备信息，将所述设备信息写入至已注册节点列表中。Perform identity authentication on the computing node device based on the identity authentication certificate information, and obtain device information of the computing node device if the identity authentication passes, and write the device information into the registered node list .
本申请实施例提供的基于区块链系统的交易数据处理装置能够实现上述基于区块链系统的交易数据处理方法的实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。The transaction data processing device based on the blockchain system provided by the embodiment of the present application can realize the various processes of the above-mentioned embodiment of the transaction data processing method based on the blockchain system, and can achieve the same technical effect. In order to avoid repetition, it is not repeated here Let me repeat.
图5是本申请实施例提供的一种计算机设备的结构图。如该图所示，该实施例的计算机设备5包括：至少一个处理器50(图5中仅示出一个)、存储器51以及存储在所述存储器51中并可在所述至少一个处理器50上运行的计算机程序52，所述处理器50执行所述计算机程序52时实现上述任意各个方法实施例中的步骤。Fig. 5 is a structural diagram of a computer device provided by an embodiment of the present application. As shown in this figure, the
所述计算机设备5可以是桌上型计算机、笔记本、掌上电脑及云端服务器等计算设备。所述计算机设备5可包括，但不仅限于，处理器50、存储器51。本领域技术人员可以理解，图5仅仅是计算机设备5的示例，并不构成对计算机设备5的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件，例如所述计算机设备还可以包括输入输出设备、网络接入设备、总线等。The
所述处理器50可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。The
所述存储器51可以是所述计算机设备5的内部存储单元，例如计算机设备5的硬盘或内存。所述存储器51也可以是所述计算机设备5的外部存储设备，例如所述计算机设备5上配备的插接式硬盘，智能存储卡(Smart Media Card，SMC)，安全数字(Secure Digital，SD)卡，闪存卡(Flash Card)等。进一步地，所述存储器51还可以既包括所述计算机设备5的内部存储单元也包括外部存储设备。所述存储器51用于存储所述计算机程序以及所述计算机设备所需的其他程序和数据。所述存储器51还可以用于暂时地存储已经输出或者将要输出的数据。The
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元、模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能单元、模块完成，即将所述装置的内部结构划分成不同的功能单元或模块，以完成以上描述的全部或者部分功能。实施例中的各功能单元、模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中，上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。另外，各功能单元、模块的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述系统中单元、模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the above system, reference may be made to the corresponding process in the foregoing method embodiments, and details will not be repeated here.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
在本申请所提供的实施例中，应该理解到，所揭露的装置/计算机设备和方法，可以通过其它的方式实现。例如，以上所描述的装置/计算机设备实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。In the embodiments provided in this application, it should be understood that the disclosed apparatus/computer equipment and methods can be implemented in other ways. For example, the device/computer equipment embodiments described above are only illustrative, for example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
所述集成的模块/单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实现上述实施例方法中的全部或部分流程，也可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括：能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、电载波信号、电信信号以及软件分发介质等。需要说明的是，所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括电载波信号和电信信号。If the integrated module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments in the present application can also be completed by instructing related hardware through computer programs. The computer programs can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps in the above-mentioned various method embodiments can be realized. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, computer-readable media Excludes electrical carrier signals and telecommunication signals.
本申请实现上述实施例方法中的全部或部分流程，也可以通过计算机程序产品来实现，当计算机程序产品在计算机设备上运行时，使得所述计算机设备执行时实现可实现上述各个方法实施例中的步骤。The present application realizes all or part of the processes in the methods of the above embodiments, and may also be realized by a computer program product. When the computer program product runs on a computer device, the computer device can realize the implementation of each of the above method embodiments when it is executed. A step of.
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.
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| WO2021008117A1 (en)* | 2019-07-12 | 2021-01-21 | 创新先进技术有限公司 | Method and apparatus for performing transaction verification |
| CN115203749A (en)* | 2022-09-16 | 2022-10-18 | 天聚地合(苏州)科技股份有限公司 | Data transaction method and system based on block chain |
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| WO2021008117A1 (en)* | 2019-07-12 | 2021-01-21 | 创新先进技术有限公司 | Method and apparatus for performing transaction verification |
| CN111753321A (en)* | 2020-06-29 | 2020-10-09 | 山东大学 | A method and system for data security sharing based on blockchain |
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