CN107563754B - Block chain-based crown word number information storage and verification method - Google Patents
Block chain-based crown word number information storage and verification method Download PDFInfo
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Abstract
The invention discloses a crown word number information storage and verification method based on a block chain, which adopts decentralized asset management to enable each branch to be used as a node, and sets the same intelligent contract on all nodes in the block chain to enable cash transfer logics of all nodes to be the same, so that the cash transfer logics are transparent to the inside, errors in recording are reduced, and records are prevented from being forged. The method of the invention can store the crown word number and the bundle number information uploaded during the clearing of each bank in the account book shared by the block chain by applying the block chain technology, and simultaneously realizes the synchronous circulation of the inter-bank transfer crown word number information flow and the cash physical flow by utilizing the urban financial network to transmit information.
Description
Technical Field
The invention belongs to the technical field of finance and information identification, and particularly relates to a crown word number information storage and verification method based on a block chain.
Background
The code on the paper money of RMB is also called as the number of the crown word, the crown word is printed on the paper money and used for marking two or three English letters of the printing batch, arranged and printed according to certain rule by the bank note printer; the number is an Arabic numeral serial number printed behind the crown word and used for indicating the arrangement sequence of each banknote in the same crown word batch.
The bank transfers money across banks because of the problem that information flow and physical distribution are not synchronous, thereby causing unnecessary cash processing cost and reducing the cash use efficiency of transferring money across banks.
In addition, in a payment clearing system among banks, a large amount payment system processes payment services in a stroke-by-stroke real-time mode, a small amount payment system initiates stroke-by-stroke, packages are sent in batches at regular time, real-time transmission is carried out, net amount clearing is carried out on two sides, and the money-in items are required to be cleared and the crown word numbers are required to be recorded again for the money-in items, so that the cash clearing and the crown word number inquiry are the most important factors of cash management work of financial institutions in the current banking industry.
The blockchain is a distributed account book, a database is reliably maintained in a distrust and decentralization mode, and from the data security perspective, the blockchain is a distributed database which is almost impossible to change, the distributed mode is more reflected in the distributed recording, storing and expressing mode of data, specifically, each bank has a database, namely, a shared account book, and reporting, registering and modifying ownership of the bundle package are recorded on the shared account book. In terms of transfer efficiency, the bank registers the private key at the block chain verification node, after the bank of the supplier uploads the paper money bundle information, the bank transfers the information to the bank of the receiver by using the intelligent contract private key authentication of the block chain, so that the transfer of the crown word number information can be solved without clearing the transferred paper money, and the complex account checking process is avoided.
Disclosure of Invention
In view of the above, the present invention provides a block chain-based crown word number information storage and verification method, which adopts decentralized asset management to enable each branch to serve as a node, and sets the same intelligent contract on all nodes in a block chain, so that cash transfer logics of all nodes are the same, and the method is transparent to the inside, reduces errors in entry, and avoids records from being forged.
A crown word number information storage and verification method based on a block chain comprises the following steps:
(1) establishing a block chain network consisting of all banks as nodes, wherein the network registers a private key for each approved node, and all nodes in the network commonly maintain a block chain for recording all transaction records from initial issuing to last transferring of each paper money crown number;
(2) the money supplier node detects the authenticity of the money to be dispensed before dispensing, creates a bundle for the qualified paper money, packs and packs the qualified paper money, stores the crown word number, the bundle information and the ticket box information of the money to be dispensed into a block chain, and broadcasts a new block to other nodes in the network;
(3) the supplier node authenticates the private key of the borrower node through an intelligent contract, transfers the ownership of the crown word number of the allocated paper money to the borrower node, and simultaneously transports the allocated paper money to the borrower node;
(4) and after receiving the money, the debit node authenticates the label of each paper money bundle, modifies the bundle attribution in the block chain in a mode of adding a new block, and logs out a bundle code at a service layer.
Further, the money supplier node in the step (2) utilizes a paper money detection device to detect the authenticity of the money to be dispensed, creates a package for the qualified paper money, registers the attribution of the package, and sticks a package label; in the process of detecting the paper money, the paper money detecting equipment identifies the crown word number of the qualified paper money and stores the crown word number and the bundling information in a block chain; in the process of bundling the paper money, the money supply side node uses the equipment to identify the bundling code of the paper money bundling, and stores the crown word number and the bundling information of all the paper money in the bundling in the block chain.
Further, the money supply side node in the step (2) utilizes paper money packing and boxing equipment to pack and box paper money, and labels are attached to the paper money box to form a paper money box; in the packing and boxing process, the paper money packing and boxing equipment identifies the label of the paper money package, and then the package code and the package label of all the paper money packages in the paper money box are associated with the box code and the box information and stored in the block chain.
Furthermore, in the step (3), an authorized bypath fault-tolerant algorithm (dBFT) is adopted to select a plurality of nodes from the network for accounting, that is, the accounting nodes are used to store ownership transfer records of all crown number bundles within a certain period of time and synchronously copy the transfer records into a block chain, and the accounting nodes are identified by the bypath fault-tolerant algorithm. Compared with Practical Byzantine Fault Tolerance (PBFT), the dFT is more suitable for the financial field, the request response mode of the C/S framework is improved into the peer node mode suitable for the P2P network, meanwhile, the static consensus participating nodes are improved into dynamic access, and therefore the fact that all bank nodes can participate in accounting and quit accounting at any time according to other relevant factors such as policies and the like is meant.
Further, the authorized byzantine fault-tolerant algorithm elects a plurality of nodes from the network for billing based on a voting mechanism of weight, wherein the weight is composed of the following four parts:
the more basic funds the bank has, the more perfect the system, the more alive the crown word number is transferred, the higher the weight value of the part is, and the part is marked as W1；
② the previous accounting success ratio is decided, the higher the previous success ratio is, namely the higher the correctness of the crown word number transfer record is, the higher the weight value of the part is, the part is marked as W2；
The credit value of the bank is used as the credit value evaluation standard, the bad loan rate of the bank, the grade of the customer and the evaluation among banks are all used as the credit value evaluation standard, the higher the credit value is, the higher the weight value of the part is, the part is marked as W3；
Fourthly, the partial weight value is set externally and is marked as W according to policy factors (such as the action of central issuing and the like)4；
The weight W ═ p of each bank1W1+p2W2+p3W3+p4W4，p1～p4Corresponds to W1～W4And finally, electing a plurality of nodes with the highest weight in the network as accounting nodes for accounting.
Furthermore, the authorized Byzantine fault-tolerant algorithm introduces a digital certificate into the block chain, and the authenticity and qualification of the bank are verified by authenticating the real identity between the accounting nodes in the consensus process.
The method of the invention can store the crown word number and the bundle number information uploaded during the clearing of each bank in the account book shared by the block chain by applying the block chain technology, and simultaneously realizes the synchronous circulation of the inter-bank transfer crown word number information flow and the cash physical flow by utilizing the urban financial network to transmit information. The invention applies the block chain technology to not only solve the information transfer problem of the crown word number innovatively, but also finish the transfer of the crown word number information without sorting the transported paper money, and creates an attempt of digitally replacing check transfer by currency settlement in a relatively closed environment, thereby having obvious cost control effect and improving the credibility of the crown word number information; in addition, the public and private key encryption system ensures that the authority of data entry and confirmation in the information transmission process of the crown word number is strictly controllable.
Therefore, the invention has the following advantages: (1) the existing system and network are fully utilized, and no special network is required to be additionally established; (2) the maintenance cost is reduced by the multi-centralization service design; (3) providing identity authentication and appropriate privacy protection; (4) setting up enhanced service supervision through different authorities; (5) building a central service node and opening information query and data analysis to member rows; (6) the time and capital cost for repeated liquidation are reduced; (7) the digital real-time settlement replaces the check transfer.
Drawings
FIG. 1 is a block chain system according to the present invention.
Fig. 2 is a schematic flow chart illustrating a process of storing prefix number information using a block chain according to the present invention.
Fig. 3 is a schematic flow chart illustrating verification of crown word number information using a block chain according to the present invention.
Fig. 4 is a schematic diagram of a travel trajectory of a 100-yuan cash with a crown number T143117728 in a time-based block chain.
Detailed Description
In order to more specifically describe the present invention, the following detailed description is provided for the technical solution of the present invention with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, the blockchain system of the present invention is composed of a plurality of nodes, and the nodes can be connected to each other through a peer-to-peer network P2P. The information transmission of the crown word numbers among all banks adopts the same mode, and in the block chain system, all nodes in the block chain store the same number and type of intelligent contracts; before the bank is transferred to a bank of a payee, the authenticity of paper money corresponding to each crown word number must be verified, and only true paper money can be input into a database of the payee, so that the intelligent contract I is a constraint on the payer; the intelligent contract II means that a money supply bank transfers ownership of the crown word number through private key authentication, and is a constraint on a payee; the intelligent contract third means that the bank notes corresponding to the crown word numbers are restrained according to the existing terms of the bank transfer and the interest rate, the reserve money, the maximum limit and the like among banks.
For information consistency, by broadcasting the block data of the transaction request executing the intelligent contract in the block chain, the transaction will be performed based on the contract on all nodes on the block chain, the same transaction result is generated, and therefore the data on all nodes is the same.
The block chain is a distributed database based on a time chain and is used for storing transaction information of records from initial issuance to last transfer of the crown word number, the operation is all behaviors such as checking, transferring, flowing out and destroying the crown word number, wherein operation time, operation place, operation personnel and operation content information are completely recorded, and time stamps are attached to inform other transaction information nodes to store the information; each bank is a transaction node on the database.
As shown in fig. 2, the storing method of the prefix number information according to the present invention based on the above-mentioned block chain system comprises the following steps:
(1) in the process of transferring money, under the constraint of an intelligent contract I, a bank needs to use paper money detection equipment to detect the authenticity of paper money before the paper money is transported out, qualified products are bundled, bundle attribution is registered, and a bundling label is pasted to form a bundling bag.
(2) In the process of detecting the paper money, the paper money detecting equipment identifies the crown word number of the qualified paper money and stores the crown word number and the packing information in a block chain system; in the process of bundling the paper money, the equipment is used for identifying the paper money bundling code according to the intelligent contract III, and the crown word number information and the bundling information of all the paper money in the paper money bundling are stored in the block chain.
(3) The paper money packing and boxing equipment packs and boxes paper money thousand bags and labels a ticket box to form a paper money box; in the process of packing and boxing the thousand paper money bags, the paper money packing and boxing equipment identifies the labels of the paper money bags, associates the packing codes and the packing labels of all the paper money bags in the paper money box with the ticket box codes and the ticket box information, and stores the packing codes and the packing labels in the block chain.
As shown in fig. 3, the method for verifying the prefix number information according to the present invention based on the above block chain system is as follows:
on the basis of the steps, verifying a payee node through an intelligent contract, registering a private key by the payee node, registering the private key by a bank at a block chain verification node, and transferring the private key to a borrower bank by using the intelligent contract private key authentication of the block chain after the supplier bank uploads the paper money packing information, namely transferring the previously generated packing ownership which is recorded in a database to the borrower bank;
the debit bank authenticates the bundle code label, modifies the bundle attribution in the block chain shared account by adding a new block, and then logs out the bundle in a business layer, so that the transfer of the crown word number information is completed without sorting the transported paper money; at any point in time, the bank associate can check the heading of each crown word number for the note in real time at the ATM or other device, as shown in fig. 4.
In the specific implementation process, the commercial bank authorized to screen the Byzantine fault-tolerant algorithm (dBFT) is adopted to store all crown number bundle transfer records in a certain time period, and the records are synchronously copied to the distributed database based on the time chain. A consensus mechanism of an authorized Byzantine fault-tolerant algorithm is adopted to judge which nodes are used for billing, bookkeepers are selected according to rights and interests, and consensus is achieved among the bookkeepers through the Byzantine fault-tolerant algorithm. Compared with Practical Byzantine Fault Tolerance (PBFT), the dFT is more suitable for the financial field, the request response mode of the C/S framework is improved into a peer node mode suitable for a P2P network, and meanwhile, static consensus participating nodes are improved into dynamic access, which means that each bank node can participate in accounting and quit accounting at any time according to other relevant factors such as policies; secondly, a voting mechanism based on weight is designed for the generation of the consensus participation node by the dFT algorithm, the accounting bank is decided by voting of other banks, so that the accounting bank can be selected by the cooperation of credit values among banks and attitudes of other banks, and finally, the dFT algorithm creatively introduces a digital certificate in a block chain, and the authenticity and qualification of the bank are verified by authenticating real identities among the accounting nodes in the voting process.
The weight of the bank represented by the node determines whether the node can participate in accounting, and then the rewarding weight is obtained through an incentive mechanism; meanwhile, the weight value of the bank can be further utilized to determine whether the bank can access circulation information of certain crown word number information in other banks, and the weight can be composed of four parts:
1. the more basic funds the bank has, the more perfect the system, the more alive the crown word number is transferred, the higher the weight value of the part is, and the part is recorded as W1。
2. The higher the previous success ratio, i.e., the higher the correctness of the crown word number transfer record, the higher the partial weight value, and is recorded as W2。
3. The credit value of the bank is determined by the credit value between banks, the bad loan rate of the bank, the grade of the customer and the evaluation between banks can be taken as the credit value of the bank, and the higher the credit is, the higher the weight value of the part is, the higher the weight value is, the part is marked as W3。
4. The partial weight value is determined by policy factors, such as actions issued at the central row, etc., and is marked as W4。
Let the bank represented by each node be i1，i2，i3，…inThe weight L of the jth nodej＝p1W1+p2W2+p3W3+p4W4，j＝1，2，…n。
Wherein p iskThe coefficient of the kth weight component is k is 1,2,3 and 4, and the accounting node is the first few banks with the largest weight values in the network.
The embodiments described above are presented to enable a person having ordinary skill in the art to make and use the invention. It will be readily apparent to those skilled in the art that various modifications to the above-described embodiments may be made, and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications to the present invention based on the disclosure of the present invention within the protection scope of the present invention.
Claims (4)
1. A crown word number information storage and verification method based on a block chain comprises the following steps:
(1) establishing a block chain network consisting of all banks as nodes, wherein the network registers a private key for each approved node, and all nodes in the network commonly maintain a block chain for recording all transaction records from initial issuing to last transferring of each paper money crown number;
the nodes are connected through a peer-to-peer network P2P, the crown word number information transmission among all banks adopts the same mode, and the same number and types of intelligent contracts are stored in all the nodes in the block chain; before the bank is transferred to a bank of a payee, the authenticity of paper money corresponding to each crown word number must be verified, and only true paper money can be input into a database of the payee, so that the intelligent contract I is a constraint on the payer; the intelligent contract II means that a money supply bank transfers ownership of the crown word number through private key authentication, and is a constraint on a payee; the intelligent contract third means that the paper money corresponding to the crown word number is restrained according to the prior clause of the bank transfer and the interest rate, the reserve money and the maximum limit among banks;
(2) the money supplier node detects the authenticity of the money to be dispensed before the money is dispensed, detects the authenticity of the money to be dispensed by using a paper money detection device, creates a bundle for qualified paper money, packs the paper money into a box, registers the attribution of the bundle, and sticks a bundle label; in the process of detecting the paper money, the paper money detecting equipment identifies the crown word number of the qualified paper money, and further stores the crown word number, the bundling information and the ticket box information of the money-transferred paper money in the block chain; in the process of bundling the paper money, the money supplier node utilizes equipment to identify a bundling code of the paper money bundle, and stores crown word numbers and bundling information of all the paper money in the bundle in a block chain;
the money supply square node packs and boxes the paper money bundles by using paper money packing and boxing equipment and sticks labels to the paper money boxes to form the paper money boxes; in the packing and boxing process, the paper money packing and boxing equipment identifies the label of the paper money package, associates the package codes and the package labels of all paper money packages in the paper money box with the box code and the box information and stores the package codes and the box information in a block chain, and broadcasts a new block to other nodes in a network; the block chain is a distributed database based on a time chain and is used for storing transaction information of records from initial issuance to last transfer of the crown word number, and the operation is the behaviors of checking, transferring, flowing out and destroying the crown word number, wherein the operation time, the operation place, the operator and the operation content information are completely recorded and are attached with time stamps to inform other transaction information nodes to store the information; each bank is a transaction node on the database;
(3) the supplier node authenticates the private key of the borrower node through an intelligent contract, transfers the ownership of the crown word number of the allocated paper money to the borrower node, and simultaneously transports the allocated paper money to the borrower node;
adopting an authorized Byzantine fault-tolerant algorithm to elect a plurality of nodes from the network for bookkeeping, namely utilizing the bookkeeping nodes to store ownership transfer records of all crown word number bales in a certain period of time and synchronously copying the transfer records into a block chain, and realizing consensus among the bookkeeping nodes through the Byzantine fault-tolerant algorithm;
the authorized Byzantine fault-tolerant algorithm elects a plurality of nodes from a network for billing based on a voting mechanism of weight, wherein the weight comprises the following four parts:
the more basic funds the bank has, the more perfect the system, the more alive the crown word number is transferred, the higher the weight value of the part is, and the part is marked as W1;
determining the previous accounting success ratio, wherein the higher the previous success ratio is, namely the higher the correctness of the crown word number transfer record is, the higher the weight value of the part is, and the part is marked as W2;
thirdly, the credit value of the bank is used for determining, the bad loan rate of the bank, the grade of the customer and the evaluation among banks are all used as credit value evaluation criteria, and the higher the credit value is, the higher the weight value of the part is, the higher the weight value is, the part is marked as W3;
fourthly, the partial weight value is externally set and is marked as W4 according to policy factors;
let the bank represented by each node be i1,i2,i3,…inThe weight L of the jth nodej＝p1W1+p2W2+p3W3+p4W4,j＝1,2,…n；
Wherein p iskThe coefficient of the kth weight component is k is 1,2,3 and 4, and the accounting node is the first few banks with the largest weight values in the network; the weight W of each bank is p1W1+ p2W2+ p3W3+ p4W4, p 1-p 4 correspond to component coefficients W1-W4, and finally, a plurality of nodes with the highest weight in the network are elected as accounting nodes for accounting;
(4) and after receiving the money, the debit node authenticates the label of each paper money bundle, modifies the bundle attribution in the block chain in a mode of adding a new block, and logs out a bundle code at a service layer.
2. The crown word number information storage and verification method according to claim 1, wherein: the authorized Byzantine fault-tolerant algorithm introduces a digital certificate into a block chain, and the authenticity and qualification of a bank are verified by authenticating the real identity between accounting nodes in the consensus process.
3. The crown word number information storage and verification method according to claim 1, wherein: the method for storing the information of the crown word number comprises the following steps:
in the process of transferring money, a bank needs to detect the authenticity of paper money by paper money detection equipment before the paper money is transported out under the constraint of an intelligent contract I, and creates a bale of qualified products, registers the attribution of the bale, and sticks a bale label to form the bale;
in the process of detecting the paper money, the paper money detecting equipment identifies the crown word number of the qualified paper money and stores the crown word number and the packing information in a block chain system; in the process of bundling the paper money, identifying the paper money bundling code according to an intelligent contract and storing crown word number information and bundling information of all the paper money in the paper money bundling in a block chain by using equipment;
the paper money packing and boxing equipment packs and boxes paper money thousand bags and labels a ticket box to form a paper money box; in the process of packing and boxing the thousand paper money bags, the paper money packing and boxing equipment identifies the labels of the paper money bags, associates the packing codes and the packing labels of all the paper money bags in the paper money box with the ticket box codes and the ticket box information, and stores the packing codes and the packing labels in the block chain.
4. The crown word number information storage and verification method according to claim 1, wherein: the method for verifying the information of the crown word number comprises the following steps:
on the basis of the steps, verifying a payee node through an intelligent contract, registering a private key by the payee node, registering the private key by a bank at a block chain verification node, and transferring the private key to a borrower bank by using the intelligent contract private key authentication of the block chain after the supplier bank uploads the paper money packing information, namely transferring the previously generated packing ownership which is recorded in a database to the borrower bank;
the debit bank authenticates the bundle code label, modifies the bundle attribution in the block chain shared account by adding a new block, and then logs out the bundle in a business layer, so that the transfer of the crown word number information is completed without sorting the transported paper money; at any point in time, the bank specialist can check the heading of the banknote corresponding to each crown word number in real time on the ATM or other equipment.
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| CN107563754A (en) | 2018-01-09 |
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