TWI779231B - Blockchain-based certificate storage method and device - Google Patents

Abstract

One or more embodiments of this specification provide a blockchain-based certificate deposit method and device, which are applied to a blockchain system including a third-party payment service node device; the method includes: the third-party payment service node The device acquires the user's third-party payment usage information, the third-party payment usage information includes the user's third-party payment account information and the fund flow information based on the third-party payment account; based on the third-party payment usage information , generate the first certificate deposit transaction; send the first certificate deposit transaction to the distributed database of the blockchain, so that the first certificate deposit transaction is verified by the node device consensus of the blockchain , is included in the decentralized database of the blockchain.

Description

Method and device for depositing evidence based on block chain

This specification relates to the technical field of data processing, and in particular to a method and device for depositing certificates based on blockchain.

Blockchain technology, also known as distributed ledger technology, is an emerging technology in which several computer devices jointly participate in "bookkeeping" and jointly maintain a complete distributed database. Due to the characteristics of decentralization, openness and transparency, each computer device can participate in database records, and rapid data synchronization between computer devices, blockchain technology has been widely used in many fields. to apply.

In view of this, one or more embodiments of this specification provide a blockchain-based certificate deposit method, which is applied to a blockchain system including a third-party payment service node device; the method includes: The third-party payment service node device obtains the user's third-party payment usage information, and the third-party payment usage information includes the user's third-party payment account information and fund flow information based on the third-party payment account; Generate a first certificate deposit transaction based on the third-party payment usage information; Sending the first certificate deposit transaction to the decentralized database of the block chain, so that the first certificate deposit transaction is included in the block chain after being verified by the node device consensus of the block chain Distributed database. In yet another illustrated embodiment, the method further includes: Obtain user registration information of the third-party payment account, where the user registration information includes the user's identification information; generating a second deposit transaction based on the registration information; Sending the second certificate deposit transaction to the decentralized database of the block chain, so that the second certificate deposit transaction is included in the block chain after being verified by the node device consensus of the block chain Distributed database. In yet another illustrated embodiment, the block chain also includes a node device associated with an associated financial institution; the distributed database of the block chain also contains the third deposit certificate sent by the node device associated transaction, the third deposit transaction is used to provide evidence for the fund flow information of the third-party payment account. In yet another illustrated embodiment, the first deposit transaction includes a hash digest of the third-party payment usage information. In yet another illustrated embodiment, the second deposit transaction includes a hash digest of the user registration information. In yet another illustrated embodiment, the block chain is a consortium chain; the third-party payment service node device and the associated financial institution node device are consortium member node devices of the consortium chain. Correspondingly, this specification also provides a blockchain-based certificate storage device, which is applied to a blockchain system including a third-party payment service node device; the device includes: An acquisition unit, configured to acquire third-party payment usage information of the user, the third-party payment usage information including the user's third-party payment account information and fund flow information based on the third-party payment account; A generating unit, configured to generate a first certificate deposit transaction based on the third-party payment usage information; A sending unit, configured to send the first certificate deposit transaction to the distributed database of the blockchain, so that the first certificate deposit transaction is recorded in the blockchain after being verified by the consensus of the node devices of the blockchain. A decentralized repository for blockchains. In yet another illustrated embodiment, the acquiring unit is further configured to acquire user registration information of the third-party payment account, where the user registration information includes user identification information; The generating unit is further configured to generate a second certificate deposit transaction based on the registration information; The sending unit is further configured to send the second certificate deposit transaction to the decentralized database of the blockchain, so that after the second certificate deposit transaction is verified by the consensus of the node devices of the blockchain, it is Included in the decentralized database of said blockchain. In yet another illustrated embodiment, the block chain also includes a node device associated with an associated financial institution; the distributed database of the block chain also contains the third deposit certificate sent by the node device associated transaction, the third deposit transaction is used to provide evidence for the fund flow information of the third-party payment account. In yet another illustrated embodiment, the first deposit transaction includes a hash digest of the third-party payment usage information. In yet another illustrated embodiment, the second deposit transaction includes a hash digest of the user registration information. In yet another illustrated embodiment, the block chain is a consortium chain; the third-party payment service node device and the associated financial institution node device are consortium member node devices of the consortium chain. Correspondingly, this specification also proposes a computer device, including: a memory and a processor; a computer program that can be run by the processor is stored on the memory; when the processor runs the computer program, it executes the above-mentioned third-party The payment service node device implements the blockchain-based certificate deposit method. This specification also provides a computer-readable storage medium on which a computer program is stored. When the computer program is run by a processor, it executes the above-mentioned third-party payment service node device based on the blockchain-based certificate storage method. It can be seen from the above technical solutions that the blockchain-based certificate storage method and device provided in this manual set the service terminal of the third-party payment institution as the node device of the blockchain, and the distributed database storage mechanism based on blockchain technology , the user of the third-party payment institution uses the information of the third-party payment to generate the first deposit transaction, and deposit the certificate in the distributed database of the blockchain, which is jointly maintained by the node devices of the blockchain system and carried out in real time Synchronization, all records can be traced back; moreover, based on the blockchain consensus mechanism, the above-mentioned first deposit transaction will not be tampered with after being provided, thereby ensuring the authenticity and security of the above-mentioned first deposit transaction, based on the above-mentioned Judicial forensics or other applications conducted by the first depository transaction provide an effective data base.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings indicate the same or similar elements. Implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatuses and methods consistent with some aspects of one or more embodiments of the present specification, as detailed in the appended claims.

It should be noted that in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or less steps than those described in this specification. In addition, a single step described in this specification may be decomposed into multiple steps for description in other embodiments; and multiple steps described in this specification may also be combined into a single step in other embodiments steps are described.

Third-party payment institutions usually refer to independent institutions with certain strength and reputation guarantee. Through the online payment mode that facilitates transactions between the two parties, users can currently complete asynchronous payment for commodity purchases based on third-party payment, and the user's third-party payment account transfers and collections between users, or transfers and collections between other financial accounts of users and third-party payment accounts. For third-party payment institutions, if users have black and gray transactions, third-party payment institutions have to cooperate with judicial agencies to investigate and collect evidence and compensate victims; when third-party payment institutions conduct judicial recovery proceedings based on their own damage , its income is often less than the cost of litigation; for this problem, third-party payment institutions can only superimpose risk control strategies by continuously increasing technical investment.

Based on the technical status and problems raised above, Fig. 1 is a block chain-based certificate storage method shown in an embodiment provided in this specification, which is applied to a block chain system including a third-party payment service node device.

The third-party payment service institution described in this embodiment refers to a financial service institution that undertakes the functions of third-party payment such as payment for goods, transfer and remittance; the third-party payment service node device described in this embodiment refers to the above-mentioned third-party payment service institution A terminal device that is set up and connected to the blockchain network.

The block chain described in this embodiment can specifically refer to a P2P network system with a distributed data storage structure achieved by each node device through a consensus mechanism. The data in the block chain are distributed in time. Within the "block (block)", the latter block contains the data summary of the previous block, and according to the specific consensus mechanism (such as POW, POS, DPOS or PBFT, etc.), the data of all or part of the nodes is reached. Full backup. Those skilled in the art are well aware that since the blockchain system operates under the corresponding consensus mechanism, the data that has been included in the blockchain database is difficult to be tampered with by any node. For example, a blockchain using the Pow consensus requires at least all Only an attack with 51% of the computing power of the network can tamper with existing data. Therefore, the blockchain system has the characteristics of ensuring data security and preventing attack and tampering that other centralized database systems cannot match. It can be seen that, in the embodiments provided in this specification, the data recorded in the distributed database of the blockchain will not be attacked or tampered with, thereby ensuring that each node device in the blockchain system (including the above-mentioned The authenticity and reliability of the data information stored in the above-mentioned blockchain by the third-party payment service node device). The terminal equipment of the above-mentioned third-party payment service organization can join the blockchain as a node equipment of the blockchain by following the corresponding node protocol and installing the node protocol program. Those skilled in the art usually refer to a node device with a full backup of data in a distributed blockchain database as a full node, and a device with partial backup data (such as only block header data) in a distributed blockchain database The node device is called a light node, etc.; the third-party payment service node device described in this embodiment can be the above-mentioned full node or light node, as long as it is directly or indirectly connected to the above-mentioned blockchain and can send or obtain blocks Any device with data in the distributed database of the chain can be referred to as a node device described in this embodiment. As shown in Figure 1, the above-mentioned block chain-based certificate storage method includes: Step 102, the third-party payment service node device obtains the user's third-party payment usage information, and the third-party payment usage information includes the user's The third-party payment account information and the fund flow information based on the third-party payment account. The user's third-party payment usage information described in this embodiment refers to the record information of the user's use of third-party payment services based on his own third-party payment account; it may include the user's own third-party payment account to make payment for goods (or receiving), transfer and remittance (or receiving) and other fund flow usage information. It is worth noting that the above-mentioned transfers (or receipts) may include transfers (or receipts) between third-party payment accounts of multiple users, and may also include transfers (or receipts) between the third-party payment accounts of users and other financial institutions. The transfer and remittance (or receipt) between accounts (such as bank accounts) is not limited in this manual. This manual does not limit the specific method for the above-mentioned third-party payment service node device to obtain the above-mentioned user's third-party payment usage information. It can obtain the above-mentioned user's third-party payment usage information from the user's third-party payment service client, or The third-party payment usage information of the above-mentioned users can be obtained from other servers or terminal devices of the third-party payment service organization, etc. Step 104: Generate a first certificate deposit transaction based on the third-party payment usage information. The transaction (transfer) described in this manual refers to a piece of data that is created through the node equipment of the blockchain and needs to be finally released to the decentralized database of the blockchain. Among them, transactions in the blockchain can be divided into transactions in a narrow sense and transactions in a broad sense. A transaction in a narrow sense refers to a value transfer issued by a user to the blockchain; for example, in the traditional Bitcoin blockchain network, a transaction can be a transfer initiated by a user in the blockchain. In a broad sense, a transaction refers to a piece of business data with business intentions issued by the user to the blockchain; for example, the transaction generated by the third-party payment service node device described in the above-mentioned embodiments of this specification is used for the above-mentioned user's The third-party payment use information for depositing evidence can be regarded as a transaction; the above-mentioned third-party payment service node device can organize the above-mentioned third-party payment use information according to the preset data content generation rules and transaction data format, so as to convert it into a transaction ——that is, the first certificate deposit transaction. There are many specific ways to generate the first deposit transaction based on the third-party payment usage information. For example, the user's third-party payment usage information can be directly organized into the first deposit transaction according to the preset transaction data format, so as to facilitate Any node device on the blockchain obtains the information content of the third-party payment usage information of the above-mentioned users. As another example, since the user's third-party payment usage information usually involves the user's account information, fund flow information and other private information, in order to protect the security of the user's information, the above-mentioned user's third-party payment usage information can be based on the default After the encryption rules are encrypted, the above-mentioned first deposit transaction will be generated. The aforementioned preset encryption rules can be set in various ways, such as symmetric encryption or asymmetric encryption, which are not limited in this specification. Mathematically hashing the original data to generate a hash summary (or hash fingerprint) of the original data is a commonly used means of storing evidence in the field, through which the hash summary can basically uniquely point to the original data information ; and the data space occupied by the hash summary has the advantage of occupying less space than the original data, especially the original data with a large amount of data. In view of the above technical basis, the first certificate deposit transaction described in this embodiment may also include the hash summary of the above-mentioned third-party payment usage information; by storing the hash summary of the third-party payment usage information in the decentralized data In the library, when obtaining evidence, it can be verified whether the above-mentioned third-party payment usage information corresponds to the stored hash summary. If so, it proves that the above-mentioned third-party payment usage information is the original information, has not been tampered with, and has legal validity as evidence. sex. Step 106: Send the first certificate deposit transaction to the decentralized database of the blockchain, so that the first certificate deposit transaction is included in the area after being verified by the consensus of the node devices of the blockchain A decentralized repository of blockchains. The detailed process of uploading the first certificate deposit transaction to the distributed database of the blockchain described in this embodiment can be specifically set according to the consensus mechanism and transaction rules of the blockchain. In an illustrated embodiment, uploading the first certificate deposit transaction to the decentralized database of the block chain includes: a node device with accounting authority in the block chain uploads the first The deposit transaction is added to the candidate block; the consensus accounting node equipment that satisfies the blockchain consensus mechanism is determined from the node equipment with accounting authority; the consensus accounting node broadcasts the node equipment of the blockchain The candidate block; After the candidate block is verified and approved by the node device that meets the preset number of nodes in the block chain, the candidate block is regarded as the latest block and added to the distributed block of the block chain in the database. In the above embodiments, the node device with accounting authority refers to the node device with the authority to generate candidate blocks. According to the consensus mechanism of the block chain, the consensus accounting node equipment can be determined from the node equipment with accounting authority in the candidate block, and the above consensus mechanism can include a proof of work mechanism (PoW) or a proof of rights mechanism (PoS) , or Share Authorization Proof Mechanism (DPoS), etc. The PoS or DPoS consensus mechanism is similar to PoW, and both belong to the consensus algorithm often used to confirm the consensus accounting node equipment in the public blockchain. In yet another illustrated embodiment, in order to reduce the confirmation time of transactions or data, improve transaction throughput, and meet the requirements for security and performance, the embodiments provided in this specification can also choose the alliance chain architecture to construct the block chain. The above-mentioned third-party payment service node equipment, or institutions that supervise financial services, judicial agencies, etc., can be used as pre-selected alliance member node equipment of the alliance chain to participate in block accounting. The consensus process of the consortium chain is also controlled by the pre-selected node devices. When more than a set ratio (such as 2/3) of node devices on the network confirms a block, the transaction or data recorded in the block will be confirmed by the entire network. Consortium chains usually use proof of rights or consensus algorithms such as PBFT and RAFT. When implementing, before each round of consensus in the blockchain starts, a master node device can be elected among each node device in the blockchain, that is, the consensus accounting node described in the above-mentioned embodiments (for example, each round of consensus A master node device is re-elected, and other node devices are used as slave node devices), and the master node device further initiates transaction verification and consensus, and is responsible for creating the latest transaction data (or target data) for the blockchain based on the consensus. block. As a preferred implementation of the consensus algorithm of the consortium chain provided in this specification, the PBFT algorithm is due to the high consensus efficiency of this algorithm, which can meet the needs of high-frequency trading volume. For example, in this embodiment, the first The first deposit transaction generated by the third-party payment service agency based on the frequent use of third-party payment by the user; and the consensus delay is very low, which basically meets the requirements of real-time processing, and can quickly and real-time in the new block of the blockchain The above-mentioned first deposit transaction is included in the above; moreover, the trusted node in the alliance chain network is used as the pre-selected accounting node, which takes into account both security and stability; in addition, the use of PBFT algorithm will not consume too much computer computing power resources, It does not necessarily require token circulation, so it has good usability. Based on the certificate storage method provided in this embodiment, based on the distributed database storage mechanism of blockchain technology, the first certificate deposit transaction generated based on the user's third-party payment usage information is recorded in multiple blocks in a decentralized manner Among the chain nodes, the blockchain nodes are jointly maintained and synchronized in real time, and all records can be traced back; moreover, based on the consensus mechanism of the blockchain, the first deposit transaction provided by the third-party payment service node device will not be tampering, thereby ensuring the authenticity and security of the stored evidence data, and providing an effective data basis for the investigation and evidence collection or other applications of the user's third-party payment usage behavior based on the first evidence-based transaction; When a third-party payment account is used to conduct black and gray transactions, any node device on the blockchain (including third-party payment service node devices, or node devices of judicial institutions) can directly obtain the above-mentioned first deposit certificate from the blockchain. Transactions are based on the anti-tampering mechanism of the blockchain for evidence collection, thereby reducing the litigation costs of third-party payment service agencies when dealing with users' black and gray transactions. In yet another illustrated embodiment, in order to further strengthen the supervision of third-party payment service users and improve the comprehensiveness of evidence collection for users' use of third-party payment services, the evidence storage method provided in this manual may also include: : Obtain the user registration information of the third-party payment account, the user registration information includes the user's identification information; generate a second deposit transaction based on the registration information; send the second deposit transaction to The distributed database of the block chain, so that the second deposit transaction is recorded in the distributed database of the block chain after being verified by the consensus of the node devices of the block chain. Similarly, the above-mentioned user registration information can be obtained from the user's third-party payment service client, or from other servers or terminal devices of the third-party payment service institution, etc., which are not limited in this specification. The identification information of the above-mentioned users may include the identity card information of the individual user, or the business license information of the enterprise user, and may also include the biological identification information of the individual user, or the biological identification of the responsible person of the enterprise user information and so on. The user's third-party payment service client can obtain the user's face information, or fingerprint information, or voiceprint information and other biological identification information through various collection methods, or can obtain the user's biological identification information by scanning the card or manually entering The user's certificate information, etc., and send the collected above information to the server or terminal device of the above-mentioned third-party payment service agency. Since the user's identification information is usually private information, if the plain text of the user's identification information is directly backed up in the distributed database of the blockchain for storage, other node devices can obtain the above identification information Clear text, which may bring security risks of identity information leakage. Therefore, similar to the first deposit transaction, the second deposit transaction described in the above embodiments may include the original text of the above user registration information, or the encrypted ciphertext of the above user registration information, or the hash of the above user registration information. One or more types of abstracts and other information. Encrypting the identification information or converting the identification information into a hash summary can not only store the original text of the above identification information, but also prevent information leakage. The specific process of recording the second certificate-deposit transaction into the distributed database of the blockchain described in the above-mentioned embodiment may be similar to the above-mentioned process of recording the first certificate-deposit transaction into the distributed database of the blockchain , which will not be repeated here. Those skilled in the art should know that when a user uses a third-party payment service, sometimes the transfer of funds between the third-party payment account and the external financial account is involved. Investigate evidence and establish a complete chain of evidence. The above-mentioned blockchain also includes node devices of associated financial institutions. The associated financial institutions refer to financial institutions that have a fund circulation relationship with the above-mentioned third-party payment service agencies, which may include various banking institutions; Moreover, the decentralized database of the block chain also includes the third deposit transaction sent by the node device of the associated financial institution, and the third deposit transaction is used to provide information on the fund flow of the third-party payment account. Evidence, for example, the third depository transaction can be the account change information of the user in the affiliated financial institution, which is included in the third-party payment usage information of the above-mentioned user, based on the fund flow information of the third-party payment account to provide to account notification, or fund transfer notification, etc. The specific process of recording the third certificate-deposit transaction into the distributed database of the blockchain described in the above-mentioned embodiment may be similar to the above-mentioned process of recording the first certificate-deposit transaction into the distributed database of the blockchain , which will not be repeated here. It is worth noting that when the above-mentioned blockchain is an alliance chain; the above-mentioned third-party payment service node equipment and the above-mentioned associated financial institution node equipment can all be alliance member node equipment of the alliance chain, and participate in the construction of the above-mentioned alliance chain; It can be used as the pre-selected node device of the alliance chain to participate in the consensus accounting of the first deposit transaction, the second deposit transaction, or the third deposit transaction. Corresponding to the realization of the above process, the embodiment of this specification also provides a certificate storage device 20 based on blockchain. The device 20 can be implemented through software, or through hardware or a combination of software and hardware. Taking software implementation as an example, as a device in the logical sense, it is formed by reading the corresponding computer program instructions into the internal memory through the CPU (Central Process Unit, central processing unit) of the device to run. From the perspective of hardware, in addition to the CPU, internal memory, and memory shown in Figure 3, the equipment where the network risk business implementation device is located usually includes other hardware such as chips for wireless signal transmission and reception. And/or boards and other hardware used to realize network communication functions. As shown in FIG. 2, this specification also provides a block chain-based certificate storage device 20, which is applied to a block chain system including a third-party payment service node device; the device 20 includes: an acquisition unit 202, which is used to obtain The third-party payment usage information of the user, the third-party payment usage information includes the third-party payment account information of the user and the fund flow information based on the third-party payment account; the generating unit 204 is configured to Paying for usage information, generating a first deposit transaction; sending unit 206, configured to send the first deposit transaction to the decentralized database of the block chain, so that the first deposit transaction is included in the block After the consensus verification of the node equipment of the chain, it is included in the decentralized database of the blockchain. In yet another illustrated embodiment, the acquiring unit 202 is further configured to acquire user registration information of the third-party payment account, the user registration information including user identification information; the generating unit 204, further configured to generate a second certificate deposit transaction based on the registration information; the sending unit 206, further configured to send the second certificate deposit transaction to a distributed database of the block chain, so that the first After the second deposit transaction is verified by the consensus of the node devices of the blockchain, it is included in the distributed database of the blockchain. In yet another illustrated embodiment, the block chain also includes a node device associated with an associated financial institution; the distributed database of the block chain also includes the third deposit certificate sent by the node device associated transaction, the third deposit transaction is used to provide evidence for the fund flow information of the third-party payment account. In yet another illustrated embodiment, the first deposit transaction includes a hash digest of the third-party payment usage information. In yet another illustrated embodiment, the second deposit transaction includes a hash digest of the user registration information. In yet another illustrated embodiment, the block chain is a consortium chain; the third-party payment service node device and the associated financial institution node device are consortium member node devices of the consortium chain. For the implementation process of the functions and effects of each unit in the above-mentioned device 20, refer to the implementation process of the corresponding steps in the above-mentioned method for details. The device embodiments described above are only illustrative, and 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 modules, that is, they may Located in one place, or can be distributed to multiple network modules. Part or all of the units or modules can be selected according to actual needs to achieve the purpose of the solution in this specification. It can be understood and implemented by those skilled in the art without progressive effort. The devices, units, and modules described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementing device is a computer, which can be in the form of a personal computer, a laptop, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an e-mail device, a game, etc. Consoles, tablets, wearables, or a combination of any of these. Corresponding to the above method embodiments, the embodiments of this specification also provide a computer device, as shown in FIG. 3 , the computer device includes a memory and a processor. Among them, a computer program that can be run by the processor is stored in the memory; when the processor runs the stored computer program, it executes the blockchain-based certificate storage method performed by the third-party payment service node device in the embodiment of this specification. various steps. For a detailed description of the various steps of the blockchain-based certificate deposit method performed by the above-mentioned third-party payment service node device, please refer to the previous content, and will not be repeated. Corresponding to the above-mentioned method embodiments, the embodiments of this specification also provide a computer-readable storage medium, on which computer programs are stored. When these computer programs are run by a processor, the third-party Each step of the blockchain-based certificate deposit method performed by the payment service node device. For a detailed description of the various steps of the blockchain-based certificate deposit method performed by the above-mentioned third-party payment service node device, please refer to the previous content, and will not be repeated. The above descriptions are only preferred embodiments of this specification, and are not intended to limit this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this specification shall be included in this specification. within the scope of protection. In a typical configuration, a computer device includes one or more processors (CPUs), input/output interfaces, network interfaces, and internal memory. Internal memory may include non-permanent memory in computer-readable media, random access memory (RAM) and/or non-volatile internal memory in the form of read-only memory (ROM) or flash memory (flash RAM). Internal memory is an example of a computer readable medium. Computer-readable media includes both permanent and non-permanent, removable and non-removable media and can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for computers include, but are not limited to, phase change internal memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM ), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other internal memory technologies, compact disc read-only memory (CD-ROM), digital multi A compact disc (DVD) or other optical storage, magnetic tape cartridge, magnetic tape storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by computer equipment. As defined herein, computer readable media does not include transitory computer readable media, such as modulated data signals and carrier waves. It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element. Those skilled in the art should understand that the embodiments of this specification may be provided as methods, systems or computer program products. Accordingly, the embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present specification may employ a computer program embodied on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) having computer-usable program code embodied therein. The form of the product.

102: Step 104: Step 106: Step 20: Device 202: Get unit 204: generating unit 206: sending unit

Fig. 1 is a schematic flow diagram of a blockchain-based certificate storage method shown in an embodiment provided in this specification; Fig. 2 is a schematic diagram of a blockchain-based certificate storage device provided in an embodiment provided in this specification; Fig. 3 is a hardware structure diagram for running the embodiment of the blockchain-based certificate storage device provided in this specification.

Claims (14)

A blockchain-based certificate deposit method, applied to a blockchain system including a third-party payment service node device; the method includes: the third-party payment service node device obtains the user's third-party payment usage information, the Third-party payment usage information includes the user's third-party payment account information and fund flow information based on the third-party payment account; based on the third-party payment usage information, it is organized according to the default data content generation rules and transaction data format and encrypt to generate the first certificate deposit transaction; add the first certificate deposit transaction to the candidate block approved by the node device that meets the preset number of nodes through the blockchain and send to the blockchain A distributed database, so that the first deposit transaction is recorded in the distributed database of the blockchain after being verified by the consensus of the node devices of the blockchain; wherein, the blockchain is based on Consortium chain architecture; wherein, the consensus verification is confirmed by the node devices exceeding the set ratio in the blockchain to obtain the confirmation of the entire network. According to the method described in claim 1, further comprising: acquiring user registration information of the third-party payment account, the user registration information including user identification information; generating a second certificate deposit transaction based on the registration information ; Sending the second certificate deposit transaction to the decentralized database of the block chain, so that the second certificate deposit transaction is included in the block chain after being verified by the node device consensus of the block chain Distributed database. According to the method described in claim 1 or 2, the block chain also includes a node device associated with the financial institution; the distributed database of the block chain also includes the third storage sent by the node device associated A certificate transaction, the third certificate deposit transaction is used to provide certificates for the fund flow information of the third-party payment account. According to the method described in claim 1, the first certificate deposit transaction includes a hash summary of the third-party payment usage information. According to the method described in claim 2, the second certificate deposit transaction includes a hash summary of the user registration information. According to the method described in claim 3, the blockchain is a consortium chain; the third-party payment service node device and the associated financial institution node device are consortium member node devices of the consortium chain. A block chain-based evidence storage device, applied to a block chain system including a third-party payment service node device; Usage information includes third-party payment account of said user Account information and fund flow information based on the third-party payment account; a generation unit, configured to organize and encrypt based on the third-party payment usage information according to the preset data content generation rules and transaction data format, and generate the first deposit certificate transaction; a sending unit, used to add the first certificate deposit transaction to a candidate block approved by the verification of the node device that meets the preset number of nodes through the blockchain and send it to the decentralized database of the blockchain, so as to After the first deposit transaction is verified by the node device consensus of the block chain, it is included in the distributed database of the block chain; wherein, the block chain is constructed with a consortium chain architecture; Wherein, the consensus verification is confirmed by the node devices exceeding the set ratio in the block chain to obtain the confirmation of the whole network. According to the device described in claim 7, the acquisition unit is further configured to acquire user registration information of the third-party payment account, the user registration information includes user identification information; the generation unit is further It is used to generate a second certificate deposit transaction based on the registration information; the sending unit is further used to send the second certificate deposit transaction to the distributed database of the block chain, so that the second certificate deposit transaction After being verified by the node device consensus of the block chain, it is included in the distributed database of the block chain. According to the device described in claim 7 or 8, the block chain also includes a node device associated with the financial institution; the distributed database of the block chain also contains the third storage sent by the node device associated financial institution A certificate transaction, the third certificate deposit transaction is used to provide certificates for the fund flow information of the third-party payment account. According to the device described in claim 7, the first certificate deposit transaction includes a hash summary of the third-party payment usage information. According to the device described in claim 8, the second deposit transaction includes a hash digest of the user registration information. According to the device described in claim 9, the blockchain is a consortium chain; the third-party payment service node device and the associated financial institution node device are consortium member node devices of the consortium chain. A computer device, comprising: a memory and a processor; the memory stores a computer program that can be run by the processor; when the processor runs the computer program, it executes any one of the requirements 1 to 6 the method described. A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method described in any one of claims 1 to 6 is executed.

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