CN113377879A - Asset intelligent query transaction system based on vein recognition and block chain - Google Patents

Asset intelligent query transaction system based on vein recognition and block chain Download PDF

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CN113377879A
CN113377879A CN202110934033.3A CN202110934033A CN113377879A CN 113377879 A CN113377879 A CN 113377879A CN 202110934033 A CN202110934033 A CN 202110934033A CN 113377879 A CN113377879 A CN 113377879A
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user
arc length
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transaction
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CN113377879B (en
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赵国栋
路晓坚
李学双
张烜
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Beijing Shengdian Cloud Information Technology Co ltd
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    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/401—Transaction verification
    • G06Q20/4014—Identity check for transactions
    • G06Q20/40145—Biometric identity checks

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Abstract

The invention discloses an asset intelligent inquiry transaction system based on vein recognition and block chain, which comprises a user chain, a blank chain, an identity recognition module and a control module, wherein the user chain is connected with the user chain through a network; the user chain is used for recording asset information and transaction information of the user; the blank chain is used for recording the total amount of the asset information which can be exchanged in the system; the user chain and the blank chain are connected end to form an annular structure; the identity recognition module is in communication connection with the user chain and the control module and is used for distinguishing the identity of the user; the control module is used for receiving a user chain instruction and realizing transaction in the user chain and mutual conversion between the user chain and the blank chain. The system related by the invention can not influence the normal use of other users due to overhigh broadcasting frequency caused by overlarge transaction amount, and can avoid influencing the user to purchase the available transaction share in the biological ring due to overlong arc length.

Description

Asset intelligent query transaction system based on vein recognition and block chain
Technical Field
The invention belongs to the technical field of asset transaction, and particularly relates to an asset intelligent query transaction system based on vein recognition and a block chain.
Background
With the progress of modern society, more and more artificial intelligence technologies are being applied to the financial industry, and the traditional financial industry is gradually shifting to financial technology. Based on the financial project of the block chain, the processing of each transaction is realized by using the block chain technology, for example, the alliance chain construction method compatible with multi-asset type fast transaction disclosed by the Chinese patent CN107038639B introduces the alliance chain technology to realize the transaction intercommunication of various types of digital assets, and simultaneously introduces a fixed multi-party signature consensus mechanism to replace a dynamic multi-party signature mechanism proved by workload on the basis of fully ensuring the system security, thereby remarkably shortening the transaction time.
When the above alliance chain is used for transaction, the broadcast processing process is generally as follows: after generating or receiving a transaction, the block chain node is placed into a cache pool; the cache pool verifies the validity and the correctness of the cache pool; packaging and broadcasting the content of the transaction to all connected nodes through a P2P module; and other nodes receive the broadcast, store the broadcast in the cache pool of the other nodes and continue broadcasting.
In the existing broadcasting scheme, each block chain node may receive the same transaction of other different nodes, and when the transaction number is large, the total consumption of the broadcast transaction is large, so that the broadcasting efficiency is low, and further the transaction data transmission efficiency is low.
Disclosure of Invention
The invention aims to provide an asset intelligent query transaction system based on vein recognition and block chains, which aims to solve the problems of high total consumption of broadcast transactions, low broadcast efficiency, low transmission efficiency of transaction data and the like.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to an asset intelligent query transaction system based on vein recognition and block chain, which comprises a user chain, a blank chain, an identity recognition module and a control module, wherein the user chain is connected with the blank chain through a network; the user chain is used for recording asset information and transaction information of the user; the blank chain is used for recording the total amount of the asset information which can be exchanged in the system; the user chain and the blank chain are connected end to form an annular structure; the identity recognition module is in communication connection with the user chain and the control module and is used for distinguishing the identity of the user; the control module is used for receiving a user chain instruction and realizing transaction in the user chain and mutual conversion between the user chain and the blank chain.
Preferably, the user chain comprises a plurality of sub-chains, adjacent sub-chains are connected end to end, at least one user chain table is arranged in each sub-chain, and the sub-chains are connected with corresponding identity identification modules; the blank chain comprises a plurality of blank chain tables, and adjacent blank chain tables are connected end to end; the arc length of each user chain table and the arc length of each blank chain table on the annular structure where the user chain table and the blank chain table are located are the same; the transaction in the user chain is the mutual transfer between the user chain tables under different sub chains, the mutual conversion between the user chain and the blank chain is a blank chain table converted into a user chain table under the sub chain, and the user chain table under the sub chain is converted into a blank chain table.
Preferably, the transaction system further includes a verification module, and when the control module receives an instruction of "converting the user linked list with the corresponding arc length under the sub-chain into a blank linked list" or "transferring the user linked list with the corresponding arc length under the sub-chain to another sub-chain" sent by the sub-chain, the verification module verifies whether the total arc length of the user linked list under the sub-chain is greater than or equal to the arc length of the user linked list with the conversion or the transfer, if yes, the control module executes the instruction, and if no, the control module overrules the instruction.
Preferably, the control module is further configured to receive or reject the user linked lists from the corresponding arc lengths of the other sub-chains according to the instruction.
Preferably, the transaction system further comprises a counting module for counting transaction times, transfer arc length, user chain arc length and blank chain arc length.
Preferably, the control module is further configured to set a transaction number accumulation threshold or/and a percentage threshold of the transferred arc length to the user chain and the blank chain arc length, and after the control module transfers the user chain table of the corresponding arc length under the sub chain to another sub chain according to the instruction, the control module determines whether the transaction number accumulation exceeds the transaction number accumulation threshold or/and determines whether the percentage of the transferred arc length to the user chain and the blank chain arc length exceeds the percentage threshold of the transferred arc length to the user chain and the blank chain arc length, and when any one of the conditions is met, the control module controls the system to perform one refresh.
Preferably, the control module is further configured to set a percentage threshold of the arc length of the blank chain in the total arc length of the ring structure; and after the blank linked list is converted into a user linked list under the sub-chain, the control module judges whether the proportion of the arc length of the blank chain to the total arc length of the annular structure meets the percentage threshold of the arc length of the blank chain to the total arc length of the annular structure, and when the proportion of the arc length of the blank chain to the total arc length of the annular structure does not meet the percentage threshold of the arc length of the blank chain to the total arc length of the annular structure, the control module controls the system to refresh once.
Preferably, the refreshing comprises at least one of: the sub-chains may trade changes in arc length, changes in position ordering of the sub-chains, increases or decreases in blank chains.
Preferably, the user linked lists are all provided with linked list bodies for recording asset information and transaction information, and the sub-chains look up the asset information and the transaction information after performing identity verification through the identity identification module.
Preferably, each sub-chain corresponds to a user side, the identity recognition module is connected with a first user linked list of the corresponding user side, and the identity recognition module is a finger vein recognition device.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the asset intelligent query transaction system based on vein recognition and block chain comprises a user chain and a blank chain, wherein the user chain and the blank chain are connected end to form an annular structure, and the position change of the sub chain on the whole ring can be influenced by the transaction in the user chain and the conversion of the user chain and the blank chain, so that the overall supervision of any transaction process on the ring can be ensured; meanwhile, the whole system refreshes under the condition of meeting a certain threshold value, namely broadcasts, and normal use of other users cannot be influenced due to overhigh broadcasting frequency caused by overlarge transaction amount.
2. The asset intelligent query transaction system based on vein recognition and block chains calculates the arc length of the blank linked list through the statistical module, when the blank linked list is too long or passes a section, the arc length of the blank linked list is automatically adjusted, the total arc length of the blank linked list and the user linked list is kept in a reasonable range, and the transaction speed is prevented from being influenced by the too long arc length; the influence of the short arc length on the user to purchase the available transaction share in the biological ring is avoided.
Drawings
FIG. 1 is a block diagram of a vein recognition and blockchain based asset intelligent query transaction system;
FIG. 2 is a transaction flow diagram for an asset intelligent query transaction system employing vein recognition and blockchain based;
FIG. 3 is a refresh flow diagram for an asset intelligent query transaction system based on vein recognition and blockchain.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Example one
Referring to fig. 1, the embodiment relates to an asset intelligent query transaction system based on vein recognition and block chain, which comprises a user chain, a blank chain, an identity recognition module and a control module. The user chain comprises a plurality of sub-chains, and each sub-chain comprises at least one user linked list and corresponds to one user side; the blank chain comprises a plurality of blank linked lists.
In this embodiment, N sub-chains are used, respectively1、N2、N3...Nn-1、NnIndicating that adjacent subchains are connected end to end, i.e. defining subchain N1Is a starting point, the sub-chain N1Is connected with a sub-chain N2Head end of, sub-chain N2Is connected with the tail end of the connectorChain N3Head end of, analogize to, sub-chain Nn-1Is linked to the terminal of the daughter strand NnThe head end of each sub chain is provided with at least one user linked list, each user linked list represents a tradable asset share of one unit, the user linked lists are provided with linked list bodies used for recording asset information and transaction information, and the head end of each sub chain is provided with a corresponding identity identification module.
The identity recognition module is a finger vein recognition device and is connected with the first user linked list of the corresponding sub chain. The user needs to carry out identity authentication through the identity authentication structure, and after the authentication is passed, the user can enter the system to carry out a series of operations such as looking up asset information and transaction information. The vein recognition device can be externally connected to an electronic product provided with the asset intelligent inquiry transaction system based on vein recognition and block chaining, the vein recognition device utilizes the absorption characteristic of the intravenous hemoglobin to near infrared light, obtains an image of vein features through infrared light irradiation by utilizing the camera, and compares the image with storage features in a computer system, so that human body recognition is completed.
The head end of the sub-chain of each user has a corresponding identity authentication structure, and because the vein features of each user have differences, each sub-chain has a different structure, and the starting position of each user can be determined and position calibration can be performed according to the structure. The starting position of each user is confirmed and calibrated, and the length of the sub-chain of each user, namely the number of owned assets, can be calculated, so that subsequent transactions and asset verification are facilitated.
The system comprises a plurality of blank linked lists, adjacent blank linked lists are connected end to end, the first blank linked list is connected with the last sub-chain, and the last blank linked list is connected with the first sub-chain, namely the sub-chain NnTail end of (2) and daughter strand N1The head ends of the user chain lists and the blank chain lists are respectively connected with two ends of the blank chain, so that all the user chain lists and the blank chain lists form an annular structure, and the same arc length exists in the user chain lists and the blank chain lists in the same annular structure.
Each sub-chain in the system has a plurality of user chain tables, namely, the sub-chain occupies part of the total arc length of all the user chain tables and the blank chain tables, and the arc length of the user chain table initially owned by the user depends on the share of assets which are purchased by the user during information registration and can be traded in the system. The arc length of the user linked list owned by the user at registration = k transaction shares available in the system purchased by the user = k real assets value (similar to real exchange rate, conversion factor, etc., e.g., real assets value is 100 rmb, k =0.01, then the transaction shares available in the bio-ring purchased by the user are k 100 x =1SDB, and the owned arc length is 1 unit). Therefore, each user in the system does not have an available user linked list when newly registering, and the user linked list can be owned under the name book only by exchanging valuable goods, namely corresponding to a section of arc length, and the arc length of the user linked list owned by the user represents the available transaction share of the user in the system, namely the transaction arc length. The mutual transaction of the assets between the two users can be realized through the transfer of the arc length, and the generated transaction amount refers to the length change of the arc length of the two users. The transaction process of the user is limited by the transaction rule, and the transaction result actually transfers the transaction amount to the corresponding user name and converts the transaction amount into the arc length of the user linked list under the corresponding sub-link name when the system is refreshed. It should be noted that after the user completes the transaction, the nominal available transaction share contains all available arc lengths, and the transaction can be performed whether the current arc length is transferred to the user name or not (only when the arc length is refreshed, the arc length is transferred). The user can convert the value of the real asset in real time according to the exchange coefficient k, and the exchange coefficient k can be dynamically adjusted by an administrator according to market conditions.
In this embodiment, the control module is configured to receive an instruction of a sub-chain, and convert the blank linked list with the corresponding arc length into the user linked list under the sub-chain according to the instruction, or convert the user linked list with the corresponding arc length under the sub-chain into the blank linked list according to the instruction, or transfer the user linked list with the corresponding arc length under the sub-chain into another sub-chain according to the instruction, or receive or reject the user linked list with the corresponding arc length from another sub-chain according to the instruction.
In this embodiment, a verification module is further provided, and when the control module receives an instruction of "converting the user linked list with the corresponding arc length under the sub-chain into a blank linked list" or "transferring the user linked list with the corresponding arc length under the sub-chain to another sub-chain" sent by the sub-chain, the verification module verifies whether the total arc length of the user linked list under the sub-chain is greater than or equal to the arc length of the user linked list with the conversion or the transfer, if yes, the control module executes the instruction, and if not, the control module overrules the instruction.
In the implementation, the system is also provided with a counting module which can be used for counting information such as transaction times, transfer arc length, user chain arc length and blank chain arc length. The number of times of transaction is recorded as 2 because the transferring of the user linked list relates to the transferring of the transferring transmission and the receiving of the receiving party.
The control module sets a transaction frequency accumulation threshold or/and a percentage threshold of the transferred arc length to the user chain and the blank chain arc length, and after the control module transfers the user chain table of the corresponding arc length under the sub chain to other sub chains according to an instruction, the control module judges whether the transaction frequency accumulation exceeds the transaction frequency accumulation threshold or/and judges whether the percentage of the transferred arc length to the user chain and the blank chain arc length exceeds the percentage threshold of the transferred arc length to the user chain and the blank chain arc length, and when any one condition is met, the control module controls the system to refresh once. The control module also sets a percentage threshold value of the arc length of the blank chain in the total arc length of the annular structure; and after the blank linked list is converted into the user linked list under the sub-chain, the control module judges whether the proportion of the arc length of the blank link to the total arc length of the annular structure meets the threshold value according to the statistical information of the statistical module, and when the proportion does not meet the threshold value, the control module controls the system to refresh once.
In this implementation, the cumulative threshold of transaction times is set to 1000 times, the percentage threshold of the transfer arc length to the arc length of the user chain and the blank chain is set to 30%, and the percentage threshold of the blank chain arc length to the total arc length of the ring structure is set to 10% -20%.
When the information obtained by the statistics of the statistics module meets the condition that the transaction times are 1000 or multiples of 1000, or the percentage of the transfer arc length in the arc lengths of the user chain and the blank chain is more than or equal to 30%, the control module controls the system to refresh once. At this time, the transaction arc length in the last refresh period is transferred, and the available transaction arc length under the user name is changed. Meanwhile, the sub-chains are reordered according to the sequence of the transaction times from low to high according to the transaction times counted by the counting module. The refreshing threshold of the transaction times is set according to the transactions counted by the counting module, so that the transaction errors caused by more transaction times, namely more arc length transfer times, can be avoided. The percentage of the arc length shift in the user chain and the arc length of the blank chain are set, namely the threshold value of the designed transaction amount, so that the situation that the transaction difficulty is increased and the transaction error is easily caused due to the fact that large-amount transactions are not refreshed timely can be avoided. The transaction times are sorted from low to high, so that users with high transaction times are guaranteed to be ranked as far as possible, the total position variation of the sub-chain in the system during refreshing can be reduced, and the operation efficiency is improved.
When the arc length of the blank chain accounts for less than 10% of the total arc length of the annular structure, the control module controls the system to refresh once, and simultaneously triggers a new growth cycle of the system, namely, a new blank chain table is connected into the original blank chain to enable the blank chain to automatically extend, namely, the arc length occupied by the blank chain is increased, so that the requirement that the arc length of the blank chain accounts for 10% -20% of the total arc length of the annular structure is met; when the arc length of the blank chain accounts for more than 10% of the total arc length of the annular structure, the control module controls the system to refresh once, and simultaneously triggers a new contraction period of the system, namely, the number of the white chain tables in the original blank chain is reduced, and the arc length occupied by the blank chain is reduced, so that the requirement that the arc length of the blank chain accounts for 10% -20% of the total arc length of the annular structure is met. By triggering the growth or contraction period of the system, the phenomenon that the blank linked list is too short, the user purchases available transaction shares and normal transaction is influenced can be avoided; and the overlong blank linked list can be avoided, and the transaction speed is reduced.
Because the whole system is in a ring structure, when the arc length of the user linked list held by any user in the system changes in a period that the blank links are not increased or reduced, the change of the positions of all user sub-chains on the whole ring is influenced, but the perimeter of the ring structure formed by the user linked list and the blank linked list is not influenced. Meanwhile, the transaction frequency of the user can also influence the position overall position sequencing of the user on the annular structure, so that any transaction process on the annular structure can be ensured to be monitored globally, and the influence on the normal use of other users due to overhigh broadcast frequency caused by overlarge transaction amount can be avoided.
When refreshing every time, the arc length of the sub-chain owned by all users of the whole system and the position of the sub-chain are refreshed, and each user records the current arc length information of the user, which is equivalent to finishing one broadcast.
Example two
Referring to fig. 2, with the transaction flow of the asset intelligent query transaction system based on vein recognition and block chain according to embodiment 1, only the transaction between 2 users, that is, the transfer of the user chain table between 2 sub-chains is described in this embodiment, the transaction between multiple users is similar to the transaction flow between 2 users, and this embodiment is not described again.
Suppose a is a transaction receiver and B is a transaction receiver:
step 1: a enters a system interface through a client (a webpage or app), the system prompts a user to perform identity verification, the A performs verification through vein recognition equipment to confirm whether the user identity is a new user, if so, information registration is performed, and available arc length exchange is performed; if the user is old, the user's available transaction arc length is scanned. After logging in the system, the user can see the user information and the owned arc length information which can be traded, and the user can exchange the available arc length by using the valuable articles or exchange the arc length which can be traded into the valuable articles. The user without available transaction arc length can not initiate the transaction, so that the user can be prevented from maliciously initiating the transaction and occupying system resources. The system replaces the login password to carry out identity authentication through vein identification, and the security of using the live password is higher, and the operation is simpler. After the user exchanges the arc length of the valuable article or exchanges the tradable arc length into the valuable article, the control module judges whether the proportion of the arc length of the blank chain in the total arc length of the annular structure meets a threshold value or not according to the arc length of the user chain and the arc length of the blank chain counted by the counting module, and determines whether the system needs to be refreshed or not, so that the blank chain is increased or decreased.
Step 2: the user A initiates a transaction application to the user B, namely the user A transfers a plurality of user linked lists to the user B, the number (available amount) of the transferred user linked lists is represented by the arc length a1 of the user linked lists in the transaction, the system prompts the user to perform identity re-verification (the second authentication of the A is performed, the first authentication is to enter the system, and the authentication is to confirm the transaction), and if the authentication is not passed, the transaction is not initiated; if the identity card passes the verification, the verification module judges whether the arc length of the user linked list owned by the user at the moment is more than or equal to a1, and if the judgment result is negative, the transaction is rejected; otherwise, a transaction instruction is sent to the user B, and the system temporarily locks a user linked list with the corresponding arc length of a1 of the user A;
and step 3: b, entering a system transaction interface through vein authentication equipment, and prompting that the transaction system has a transaction instruction to be received; b may choose to reject, or accept, the transaction instruction. B, after receiving a transaction instruction, firstly verifying whether the identity information of the transaction party A and the transaction arc length a1 are correct, if the identity information of the transaction party A or the asset share a1 is wrong, sending a refusal transaction signal and transmitting the refusal transaction signal to the transaction party A after the identity information or the asset share a1 is verified by vein recognition equipment, and unlocking the transaction arc length a1 temporarily locked by the user A by the system; otherwise, if the identity card information of the transaction party A and the transaction arc length a1 are correct, the user B verifies the confirmation through the vein recognition device and sends a confirmation transaction instruction signal to the user A. (this is a second authentication of B, the first authentication being entry into the system, this authentication being confirmation of the transaction)
And 4, step 4: the system marks the information of the user linked list of the transaction arc length a1, points to the user B, and adjusts the arc length of the user linked lists of both parties when the system is refreshed (the arc length a1 belongs to the user B at present, and is the tradable arc length under the name of the user B, and the user B can trade with the user B).
And 5: referring to fig. 3, the system automatically counts the transaction times and the transfer arc length, and when the information counted by the counting module meets the requirement that the transaction times is 1000 or a multiple of 1000, or the percentage of the transfer arc length to the arc length of the user chain and the blank chain is greater than or equal to 30%, the control module controls the system to perform system refreshing once. Step 6: referring to FIG. 3, after refresh: counting the transaction times of each user, reordering the sub-chains according to the sequence of the transaction times from low to high, wherein the arc starting point of the user with the least transaction times is used as the starting point of the user chain table, and the arc length of the blank chain table is respectively connected with the arc starting point of the user with the least transaction times and the arc end point of the user with the most transaction times in the refresh period; secondly, transferring the locked user linked list of the transaction arc length to a corresponding user name according to the information mark; thirdly, judging whether the blank chain needs to be increased or decreased, and if the arc length of the blank chain/(the total arc length of the blank chain + the total arc length of the user chain) is more than 20%, decreasing the blank chain; if the blank chain arc length/(the total arc length of the blank chain + the total arc length of the user chain) < 10%, increasing the blank chain; and if the blank chain arc length/(the blank chain total arc length + the user chain total arc length) is more than or equal to 10% or less than or equal to 20%, maintaining unchanged, and not growing or shrinking.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. An asset intelligent inquiry transaction system based on vein recognition and block chain is characterized in that: the system comprises a user chain, a blank chain, an identity recognition module and a control module; the user chain is used for recording asset information and transaction information of the user; the blank chain is used for recording the total amount of the asset information which can be exchanged in the system; the user chain and the blank chain are connected end to form an annular structure; the identity recognition module is in communication connection with the user chain and the control module and is used for distinguishing the identity of the user; the control module is used for receiving a user chain instruction and realizing transaction in the user chain and mutual conversion between the user chain and the blank chain.
2. The asset intelligent query transaction system based on vein recognition and blockchain as claimed in claim 1, wherein: the user chain comprises a plurality of sub-chains, adjacent sub-chains are connected end to end, at least one user chain table is arranged in each sub-chain, and the sub-chains are connected with corresponding identity recognition modules; the blank chain comprises a plurality of blank chain tables, and adjacent blank chain tables are connected end to end; the arc length of each user chain table and the arc length of each blank chain table on the annular structure where the user chain table and the blank chain table are located are the same; the transaction in the user chain is the mutual transfer between the user chain tables under different sub chains, the mutual conversion between the user chain and the blank chain is a blank chain table converted into a user chain table under the sub chain, and the user chain table under the sub chain is converted into a blank chain table.
3. The asset intelligent query transaction system based on vein recognition and blockchain as claimed in claim 2, wherein: the transaction system further comprises a verification module, when the control module receives an instruction of converting the user linked list with the corresponding arc length under the sub-chain into a blank linked list or transferring the user linked list with the corresponding arc length under the sub-chain to other sub-chains, which is sent by the sub-chain, the verification module verifies whether the total arc length of the user linked list under the sub-chain is larger than or equal to the arc length of the user linked list with the conversion or the transfer, if the total arc length is 'yes', the control module executes the instruction, and if the total arc length is 'no', the control module overrules the instruction.
4. The asset intelligent query transaction system based on vein recognition and blockchain of claim 3, wherein: the control module is also used for receiving or rejecting the user linked lists of the corresponding arc lengths from other sub-chains according to the instruction.
5. The asset intelligent query transaction system based on vein recognition and blockchain as claimed in claim 2, wherein: the transaction system also comprises a counting module for counting transaction times, transfer arc length, user chain arc length and blank chain arc length.
6. The asset intelligent query transaction system based on vein recognition and blockchain of claim 5, wherein: the control module is also used for setting a transaction frequency accumulation threshold or/and a percentage threshold of the transferred arc length in the user chain and the blank chain arc length, when the control module transfers the user chain table of the corresponding arc length under the sub chain to other sub chains according to an instruction, the control module judges whether the transaction accumulation frequency exceeds the transaction frequency accumulation threshold or/and judges whether the percentage of the transferred arc length in the user chain and the blank chain arc length exceeds the percentage threshold of the transferred arc length in the user chain and the blank chain arc length, and when any one condition is met, the control module controls the system to refresh once.
7. The asset intelligent query transaction system based on vein recognition and blockchain of claim 5, wherein: the control module is also used for setting a percentage threshold value of the arc length of the blank chain in the total arc length of the annular structure; and after the blank linked list is converted into a user linked list under the sub-chain, the control module judges whether the proportion of the arc length of the blank chain to the total arc length of the annular structure meets the percentage threshold of the arc length of the blank chain to the total arc length of the annular structure, and when the proportion of the arc length of the blank chain to the total arc length of the annular structure does not meet the percentage threshold of the arc length of the blank chain to the total arc length of the annular structure, the control module controls the system to refresh once.
8. The asset intelligent query transaction system based on vein recognition and blockchain according to claim 6 or 7, wherein: the refreshing includes at least one of: the sub-chains may trade changes in arc length, changes in position ordering of the sub-chains, increases or decreases in blank chains.
9. The asset intelligent query transaction system based on vein recognition and blockchain as claimed in claim 2, wherein: the user linked lists are respectively provided with linked list bodies for recording asset information and transaction information, and the sub-chains look up the asset information and the transaction information after carrying out identity verification through the identity identification module.
10. The asset intelligent query transaction system based on vein recognition and blockchain as claimed in claim 2, wherein: each sub-chain corresponds to a user side, the identity recognition module is connected with a first user linked list of the corresponding user side, and the identity recognition module is a finger vein recognition device.
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