TW201933224A - Transaction record method and system based on blockchain - Google Patents

Abstract

A transaction record method and system based on blockchain are provided. The method includes following steps. An identifier tag of an object is generated. A first transaction request associated with the object is broadcasted according to the identifier tag by a first node device of a first authority group. The first transaction request is verified by a second node device of the first authority group, and a first block associated with the identifier tag is recorded into a first blockchain by the second node device. A second transaction request associated with the object is broadcasted according to the identifier tag by a third node device of a second authority group. The second transaction request is verified by a fourth node device of the second authority group, and a second block associated with the identifier tag is recorded into a second blockchain by the fourth node device.

Description

Block record based transaction record method and system

The present invention relates to a transaction record method, and more particularly to a blockchain based transaction record method and system.

The model of manufacturing by subcontracting is the main manufacturing strategy of each brand company, and it is widely used in practice. The procurement model of foundry materials is an important part of the industrial division of labor. The brand company buys the necessary components from one or more suppliers and then assembles them into products by the foundry. In this process, the unit price and shipment quantity of the components are separately recorded and managed by each manufacturer (including brand companies, foundries, and component suppliers). Even, based on the precautions, the product department and the procurement department within the same brand company also need to separately manage the ordering information of the components and not disclose them to each other. In other words, each manufacturer will establish a self-maintained order information book based on the procurement activities of the components. However, in the order information book maintained by different manufacturers, the naming and unit price of the same components are different. This phenomenon causes the auditor to be troubled and difficult to audit according to different books.

Blockchain technology consists of cryptography, mathematics, algorithms and economic models. It combines peer-to-peer network relationships and uses distributed consensus algorithms to solve the synchronization problem of traditional distributed databases. It can be said to be a set of integration. Infrastructure for cross-domain technology. The blockchain technology belongs to a decentralized architecture. Each node device securely stores digital currency transactions or other data, and the information recorded in the blockchain is unforgeable and cannot be tampered with. Blockchain technology was originally the underlying technology for issuing digital currencies. Today, blockchain technology has gradually expanded to any application in the modern human life that requires trust verification, such as identity certification, visa, logistics, medical care, voting, and so on.

In view of this, the present invention provides a blockchain-based transaction recording method and system, in which node devices of different rights groups establish and maintain different blockchains based on the same item purchasing behavior, and different block chains correspond to the same The transaction block of the item is established based on the same identification tag to achieve the effect of dividing the reading and writing authority and improving the efficiency of the audit.

The invention provides a blockchain based transaction recording method, which is applicable to a blockchain based multi-node network. The multi-node network includes a plurality of node devices, and the transaction recording method includes the following steps. Generate an identification tag for the item. The first transaction request associated with the item is broadcast by the first node device belonging to the first rights group in accordance with the identification tag. The first transaction request is verified by the second node device belonging to the first authority group, and the first transaction block associated with the identification tag is recorded by the second node device to the first blockchain. A second transaction request associated with the item is broadcast by the third node device belonging to the second rights group in accordance with the identification tag. The second transaction request is verified by the fourth node device belonging to the second authority group, and the second transaction block associated with the identification tag is recorded by the fourth node device to the second blockchain.

From another point of view, the present invention provides a blockchain based transaction record system that includes a plurality of node devices. These node devices are configured in a blockchain-based multi-node network that communicate with each other in a multi-node network. The node device includes a first node device, a second node device, a third node device, and a fourth node device. The first node device belonging to the first authority group broadcasts the first transaction request associated with the item in accordance with the identification tag. The second node device belonging to the first authority group verifies the first transaction request, and the second node device records the first transaction block associated with the identification tag to the first blockchain. The third node device belonging to the second authority group broadcasts a second transaction request associated with the item in accordance with the identification tag. The fourth node device belonging to the second authority group verifies the second transaction request, and the fourth node device records the second transaction block associated with the identification tag to the second blockchain.

Based on the above, according to an embodiment of the present invention, a plurality of node devices participating in a procurement behavior may be classified into a first permission group and a second permission group, respectively, to establish a corresponding first blockchain and a second blockchain. . The node devices belonging to the first privilege group jointly maintain the first blockchain, and the node devices belonging to the second privilege group jointly maintain the second blockchain. The link between the first blockchain and the second blockchain can be made by the identification tag of the item. In this way, the auditor can directly check whether the account of the item is correct according to the identification label of the item, and greatly improve the efficiency and convenience of the account review and audit.

The above described features and advantages of the invention will be apparent from the following description.

The present exemplary embodiments will now be described in detail, and examples of the exemplary embodiments are illustrated in the drawings. In addition, wherever possible, the same reference numerals in the drawings

1 is a schematic diagram of a transaction record system according to an exemplary embodiment. It is to be understood that the example of FIG. 1 is for illustrative purposes only and is not intended to limit the invention.

Referring to FIG. 1, the transaction record system 100 includes a plurality of node devices 102_1 102 102_4, each of which is connected to each other through a network 104. For example, the plurality of node devices 102_1 102 102_4 may be mobile devices, notebook computers, tablet computers, general desktop computers, servers, etc., or other electronic devices that can communicate with each other and transmit data through the network 104. . However, it must be understood that the present example is described by taking a four-node device as an example, but the present invention is not limited thereto. For example, transaction record system 100 can include more node devices.

In an exemplary embodiment, network 104 may be, for example, a peer-to-peer (P2P) network. A peer-to-peer network is an Internet system that has no central server and exchanges information through node devices in the network. A peer-to-peer network is different from a central network system in which a central server is provided. Each node device in a peer-to-peer network can be regarded as a user terminal and has the function of a server at the same time. It is worth mentioning that the invention does not limit the form of the network 104. For example, in another embodiment, the network 104 may also be other suitable network communication protocols, which are not limited by the present invention.

2 is a block diagram of a node device in a transaction record system, in accordance with an exemplary embodiment. For simplicity of explanation, in the exemplary embodiment of FIG. 2, only the node device 102 is used to describe the component architecture of each of the node devices 102_1 to 102_4. It should be understood that, in another embodiment, each of the node devices 102_1 102 102_4 may configure other different components according to the requirements of the respective uses, which are not limited by the present invention.

. Referring to FIG. 2, the node device 102 of the embodiment of the present invention may include at least a processing unit 111, a storage unit 113, and a communication unit 115. The processing unit 111 can be a central processing unit (CPU), a microprocessor (Microprocessor), a digital signal processor (DSP), a programmable controller, and a special application integrated circuit (Application Specific Integrated). Circuits, ASICs, Programmable Logic Devices (PLDs), Graphics Processing Units, or other similar devices.

The storage unit 113 can be a random access memory (RAM), a read-only memory (ROM), a flash memory (Flash memory), a compact flash (CF) memory. Card, Secure Digital (SD) memory card, Micro SD memory card, Memory Stick (MS), Hard Disk Drive (HDD) or other similar device.

The communication unit 115 can be a wireless communication chip supporting wireless communication standards such as 802.11n/b/g of the Institute of Electrical and Electronics Engineers (IEEE) or a network card supporting a wired network connection (for example, super High speed Ethernet card) or network chip or other similar device.

In the present exemplary embodiment, the software code of the transaction record method of the present invention is stored in the storage unit 113, and when the node device 102 is enabled, the software code is loaded from the storage unit 113 to The transaction recording method of the present invention is executed by the processing unit 111 in the buffer memory of the node device 102.

Therefore, in the embodiment of the present invention, the node devices 102_1 102 102_4 will be classified into a first rights group and a second rights group, and the node devices in the first rights group jointly maintain the first block chain. (ie, the first book), the node devices in the second rights group jointly maintain the second blockchain (ie, the second book). In an embodiment, the first rights group and the second rights group may include the same node device. For example, the same node device may be the node provider 102_4 of the item provider, which has the right to access the first blockchain and the second blockchain.

In addition, the node devices 102_1 ～ 102_4 respectively have corresponding transaction addresses, and the settings of the first privilege group and the second privilege group can be established by establishing a transaction address list of the first privilege group and a transaction address list of the second privilege group. Implementation. Based on this, when the node device in the first permission group initiates the transaction, the node device in the first permission group can broadcast the transaction request to other node devices in the first permission group according to a transaction address list, The first blockchain is established and maintained with other node devices in the first rights group. The list of transaction addresses referred to in the present invention is not limited to an address, and may be a list of accounts, as long as the list for listing the first permission group belongs to the scope of the present invention.

3A is an illustration of a first permission group based on a particular procurement mode, in accordance with an embodiment of the present invention. FIG. 3B illustrates an example of a second permission group based on a particular procurement mode, in accordance with an embodiment of the present invention. In the example shown in FIG. 3A and FIG. 3B, the node device 102_1, the node device 102_2 and the node device 102_4 are classified into a first authority group G1, and the node device 102_3 and the node device 102_4 are classified as a second authority group. G2.

In other words, the node device 102_1, the node device 102_2 and the node device 102_4 jointly establish and maintain the first blockchain C1. When the purchase behavior of the article occurs, the first transaction block B1 related to the article is composed of the node device 102_1 and the node device 102_2. Or the node device 102_4 is added to the first blockchain C1. In addition, the node device 102_3 and the node device 102_4 jointly establish and maintain the second blockchain C2. When the purchase behavior of the article occurs, the second transaction block B2 regarding the article is added to the second by the node device 102_3 or the node device 102_4. Blockchain C2. It should be noted that, in this example, the node device 102_1 and the node device 102_2 do not have the authority to maintain or access the second blockchain C2.

Additionally, in an embodiment of the invention, the node devices establish a transaction block in the blockchain based on the identification tag of the item. In particular, all transaction blocks associated with the same item may correspond to a unique identification tag. Based on this, the first blockchain and the second blockchain can have a connected relationship according to the identification tag. Thereby, the auditor device or the node device having the authority to maintain the first blockchain and the second blockchain at the same time can acquire all the transaction blocks associated with a specific item according to the identification tag, thereby accelerating the audit and accounts. The efficiency and reliability of the comparison. For example, the first transaction block B1 and the second transaction block B2 shown in FIG. 3A and FIG. 3B may correspond to the same identification tag. In this way, the auditor device can directly retrieve the first transaction block B1 and the second transaction block B2 according to the identification tag, thereby effectively checking whether the product department and the purchasing department's subscription account for a specific item is related to the accounting department. The accounts match.

4 is a flow chart of a blockchain based transaction recording method in accordance with an embodiment of the present invention. For the convenience and clarity of the present invention, FIG. 4 will be described with reference to the examples shown in FIGS. 1, 3A and 3B. It should be further noted that the transaction record system 100 may further include an auditor device 101 and a third party device 103. The auditor device 101 is similar to the third party device 103 as an electronic device having computing and data processing capabilities, such as a computer or a server. In another embodiment, the auditor device 101 and the third party device 103 are the same electronic device. In still another embodiment, the auditor device 101 and the third party device 103 can be any node device. For example, the auditor device 101 can be the node device 102_1, and the third party device 103 can be the node device 102_4.

In step S401, the identification tag of the item is generated by the third party device 103. In an embodiment of the invention, when the purchasing action of the item occurs, the third party device 103 generates an identification tag corresponding to the orderer and associated with the item. Next, the identification tags of the articles are acquired by the node devices 102_1 to 102_4. In step S402, the first node device 102_1 belonging to the first authority group broadcasts the first transaction request associated with the item according to the identification tag. In step S403, the first transaction request is verified by the second node device 102_2 belonging to the first authority group, and the first transaction block associated with the identification tag is recorded by the second node device 102_2 to the first blockchain. .

In the embodiment of FIG. 3A, assuming that the first node device 102_1 broadcasts the first transaction request, the first transaction request is received by the plurality of node devices (ie, the node device 102_2 and the node device 102_4) in the first rights group G1, And the workload proof mechanism is executed by the node device in the first permission group. Next, the verification value generated according to the workload proof mechanism is added to the first transaction block B1 by the second node device 102_2, and the first transaction block B1 associated with the identification tag is recorded to the first blockchain C1.

In more detail, assuming that it is desired to add a transaction information about the official price of an item to the book, the first node device 102_1 can broadcast the first transaction request associated with the item to the first permission group G1 according to the identification tag. Other multiple node devices (ie, node device 102_2 and node device 102_4). When the other node device in the first privilege group G1 receives the first transaction request, each node device in the first privilege group G1 may perform a workload verification according to the first transaction request received by the broadcast (Proof Of Work, POW) mechanism. Thereafter, the node device that first calculates a current verification value by the workload proof mechanism adds the transaction block B1 along with the current verification value to the first blockchain C1. In the embodiment of FIG. 3A, for example, the second node device 102_2 completes the workload proof mechanism and verifies the first transaction request to record the first transaction block B1 associated with the identification tag to the first region. Block chain C1. Next, at least some of the node devices (non-block creators, such as node device 102_4) among the first privilege groups G1 will verify the new first transaction block B1. If the verification result is correct, the node device 102_4 will accept the newly generated first transaction block B1 and save it together with the previous other transaction blocks.

Returning to the flow of FIG. 4, in step S404, the third node device 102_3 belonging to the second authority group broadcasts a second transaction request associated with the item according to the identification tag. In step S405, the second transaction request is verified by the fourth node device belonging to the second authority group, and the second transaction block associated with the identification tag is recorded by the fourth node device 102_4 to the second blockchain.

However, in the step S404 to the step S405, the node device in the second authority group establishes and maintains the second blockchain in the same manner as the node device in the first authority group establishes and maintains the first blockchain in steps S402 to S403. The way, not to repeat here. For example, if it is desired to add a transaction information about the preferential price of an item to the book, the third node device 102_3 may broadcast the second transaction request associated with the item to the second authority group G2 according to the identification tag. Other multiple node devices. Next, the fourth node device 102_4 verifies the second transaction request, and the fourth node device 102_4 records the second transaction block B2 associated with the identification tag to the second blockchain C2. Therefore, in the embodiment of the present invention, when the node devices 102_1 102 102_4 are the users playing different roles, the contents of the common ledger (that is, the first blockchain and the second blockchain) can be instantly synchronized. And it has been verified by many parties and is not easy to be tampered with. In addition, the first blockchain and the second blockchain corresponding to different privilege levels are jointly maintained by node devices belonging to different privilege groups, so that confidential information related to purchasing behavior can be accessed by appropriate objects.

It should be noted that, in an embodiment, the process shown in FIG. 4 may optionally include step S406, but the present invention is not limited thereto. In step S406, the first transaction block and the second transaction block are taken out from the first blockchain and the second zone chain by the auditor device 101 according to the identification tag, and according to the first unit price in the first transaction block. The second unit price in the second trading block is clear whether the account for the item is correct.

For example, FIG. 5 is a schematic diagram of a first blockchain and a second blockchain in a transaction record system, according to an exemplary embodiment. Referring to FIG. 5, the first blockchain C1 of the transaction record system 100 of the present invention may include a transaction block B1_1, a transaction block B1_2, a transaction block B1_3, and the like. Taking the transaction block B1_2 as an example, the transaction block B1_2 includes the hash value 501 of the previous block, the verification value 'key1' 502, the item name 'N1' 503, the unit price 'P1' 504, the identification tag 'A' 505, and the order quantity. 'M'506. Each trading block can identify its previous trading block by the hash value of the previous block, so multiple trading blocks can form a complete blockchain C1. In addition, the verification value 'key1' is used to allow other node devices to verify the legitimacy of this transaction block.

Similarly, the first blockchain C2 of the transaction record system 100 of the present invention may include a transaction block B2_1, a transaction block B2_2, a transaction block B2_3, and the like. Taking the transaction block B2_2 as an example, the transaction block B2_2 includes the hash value 511 of the previous block, the verification value 'key2' 512, the item name 'N2' 513, the unit price 'P2' 514, the identification tag 'A' 515, and the order quantity. 'M'516. It is worth mentioning that the first unit price 'P1' 504 is different from the second unit price 'P2' 514, and the first item 'N1' 503 is different from the second item name 'N2' 513. However, the auditor device can still extract the transaction information associated with the same ordering behavior through the identification tag 'A' 505 and the identification tag 'A' 515 to quickly perform the auditing of the account auditing of the purchasing behavior.

However, the implementation of the present invention is not limited to the above description, and the contents of the above embodiments may be changed as appropriate for actual needs. For example, the present invention does not limit the number of node devices, the number of permission groups, and the number of blockchains, and those skilled in the art can design according to actual needs.

In summary, in the embodiment of the present invention, the first blockchain and the second blockchain can be regarded as two common books corresponding to different access rights. The book contents of the first blockchain are jointly maintained by the node devices in the first rights group, and the book contents of the second block chain are jointly maintained by the node devices in the second rights group. Compared with the conventional multi-party transaction, each transaction party maintains its own purchase account, and the transaction record system of the embodiment of the invention ensures that each transaction information in the common account book is authenticated by multiple parties, thereby improving procurement information. Reliability and credibility. In addition, the present invention can realize blockchain access with rights division, and the reliability and security of ordering transaction information involving multi-party transactions are also greatly improved. In addition, by establishing a transaction block in the first blockchain and the second blockchain according to the unique identification tag of the item, the auditor device retrieves the corresponding item from the different blockchain according to the unique identification tag. Purchasing transaction information to improve the efficiency of the auditor’s equipment auditing procurement information,

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Transaction Records System

102_1～102_4, 102‧‧‧node devices

101‧‧‧ auditor device

103‧‧‧ Third party installation

104‧‧‧Network

111‧‧‧Processing unit

113‧‧‧ storage unit

115‧‧‧Communication unit

G1‧‧‧First permission group

G2‧‧‧Second permission group

C1‧‧‧ first blockchain

C2‧‧‧Second blockchain

B1‧‧‧ first trading block

B2‧‧‧Second trading block

502, 512‧‧‧ verification value

503, 511‧‧‧ article name

504, 511‧‧‧ unit price

505, 511‧‧ identification labels

506, 511‧‧‧ Order Quantity

The tangible value of the 501 ‧ ‧ ‧ former block

S401～S406‧‧‧Steps

1 is a schematic diagram of a transaction record system according to an exemplary embodiment. 2 is a block diagram of a node device in a transaction record system, in accordance with an exemplary embodiment. 3A is an illustration of a first permission group based on a particular procurement mode, in accordance with an embodiment of the present invention. FIG. 3B illustrates an example of a second permission group based on a particular procurement mode, in accordance with an embodiment of the present invention. 4 is a flow chart of a method of transaction recording in accordance with an embodiment of the present invention. FIG. 5 is a schematic diagram of a first blockchain and a second blockchain in a transaction record system, according to an exemplary embodiment.

Claims (10)

A blockchain-based transaction record method is applicable to a blockchain-based multi-node network, wherein the multi-node network includes a plurality of node devices, and the transaction record method comprises: belonging to a first permission group a first node device broadcasts a first transaction request associated with the item according to an identification tag of an item; and validates the first transaction request by a second node device belonging to the first rights group, and Recording, by the second node device, a first transaction block associated with the identification tag to a first blockchain; a third node device belonging to a second permission group is associated with the identification tag according to the broadcast a second transaction request for the item; and verifying the second transaction request by a fourth node device belonging to the second rights group, and the second node device associates a second transaction associated with the identification tag The block records to a second blockchain. The blockchain-based transaction record method of claim 1, wherein the step of generating the identification tag of the article comprises: generating, by a third party device, a subscriber corresponding to the purchase of the article And the identification tag associated with the item; and the identification tag of the item is obtained by the node devices. The blockchain-based transaction record method of claim 2, wherein the first transaction block includes an order quantity of the item, a first unit price, and a first item name, and the second transaction The block includes the ordered quantity of the item, a second unit price, and a second item name, wherein the first unit price is different from the second unit price, and the first item name is different from the second item name. The blockchain-based transaction record method as described in claim 3, further comprising: extracting, by the auditor device, the first transaction from the first blockchain and the second zone chain according to the identification tag And the block and the second transaction block, and according to the first unit price in the first transaction block and the second unit price in the second transaction block, whether the account of the item is correct. The blockchain-based transaction record method of claim 1, wherein the second node device in the first authority group verifies the first transaction request, and the second node device The step of recording the first transaction block associated with the identification tag to the first blockchain includes: receiving, by the plurality of node devices in the first rights group, the first transaction request, and by the first The node devices in the rights group perform a workload proof mechanism; and the second node device adds the verification value generated according to the workload proof mechanism to the first transaction block, and associates with the identification tag The first transaction block records to the first blockchain. A blockchain-based transaction record system, comprising: a plurality of node devices, configured in a multi-node network based on a blockchain, wherein the node devices communicate with each other in the multi-node network, the node devices include a node device, a second node device, a third node device, and a fourth node device, wherein a first node device belonging to a first permission group broadcasts a first transaction request associated with an item according to an identification tag; A second node device belonging to the first authority group verifies the first transaction request, and the second node device records a first transaction block associated with the identification tag to a first blockchain a third node device belonging to a second permission group broadcasting a second transaction request associated with the item according to the identification tag; and a fourth node device belonging to the second rights group requesting the second transaction Verification is performed, and the fourth node device records a second transaction block associated with the identification tag to a second blockchain. The blockchain-based transaction record system of claim 6, wherein the blockchain-based transaction record system further comprises a third-party device, and when the purchase behavior of the item occurs, the third-party device generates a corresponding The identification tag associated with the item and associated with the item, and the node devices acquire an identification tag of the item. The blockchain-based transaction record system of claim 7, wherein the first transaction block includes an order quantity of the item, a first unit price, and a first item name, and the second transaction The block includes the ordered quantity of the item, a second unit price, and a second item name, wherein the first unit price is different from the second unit price, and the first item name is different from the second item name. The blockchain-based transaction record system of claim 8, wherein the blockchain-based transaction record system further comprises an auditor device, the auditor device according to the identification tag from the first block The chain and the second zone chain extract the first transaction block and the second transaction block, and according to the first unit price in the first transaction block and the second unit price in the second transaction block Clearing whether the account for the item is correct. The blockchain-based transaction record system of claim 6, wherein the plurality of node devices in the first rights group receive the first transaction request, and the one in the first rights group The node devices perform a workload verification mechanism; and the second node device adds the verification value generated according to the workload certification mechanism to the first transaction block, and records the first transaction block associated with the identification tag To the first blockchain.