CN109670830B - System and method for on-chain asset-based downlink - Google Patents

System and method for on-chain asset-based downlink Download PDF

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CN109670830B
CN109670830B CN201811563269.5A CN201811563269A CN109670830B CN 109670830 B CN109670830 B CN 109670830B CN 201811563269 A CN201811563269 A CN 201811563269A CN 109670830 B CN109670830 B CN 109670830B
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asset
information
downlink
assets
hosting
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CN109670830A (en
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姚前
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3825—Use of electronic signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange

Abstract

The invention discloses a system and a method for uplink asset downlink, relating to the technical field of digital assets. One embodiment of the system comprises: the asset application terminal system generates downlink request information based on the managed asset type and the downlink asset quantity selected or input by the user, and sends the downlink request information with the asset application terminal system signature to the asset management system; the asset hosting system verifies the downlink request information with the asset application terminal system signature, and after the verification is passed, the downlink request information with the asset hosting system signature is sent to an asset hosting party; and the asset hosting party verifies the downlink request information with the asset hosting system signature, and after the verification is passed, the hosted assets with the same quantity as the downlink assets are returned and transferred to the user, so that the uplink asset and downlink are realized. The embodiment solves the problem of transferring the assets on the chain to the assets under the chain, and realizes the interaction with the asset right registration system under the chain.

Description

System and method for on-chain asset-based downlink
Technical Field
The invention relates to the technical field of digital assets, in particular to a system and a method for uplink asset downlink.
Background
At present, the blockchain technology is rapidly developed, and the blockchain is used as a decentralized novel distributed computing paradigm and provides technical support for the operation of various digital assets on a distributed network. The digital assets run on a distributed network of a block chain, the global multi-node consensus accounting is carried out in a mode of sharing an account book without depending on accounting of a specific third party or a central party, and a safety system of technical guarantee is realized through an encryption algorithm.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
1) The existing block chain runs on digital assets on the chain, and the problem that the assets on the chain are transferred to the position under the chain cannot be solved;
2) Existing blockchains lack the ability to interact with information with the asset rights registration system under the chain.
Disclosure of Invention
In view of this, embodiments of the present invention provide a system and a method for chaining assets and downlinking, where an asset hosting system receives a downlink request message initiated by a user, verifies a signature, and sends the signature to an asset hosting party, and the asset hosting party returns managed assets, the number of which is the same as that of the downlink assets in the downlink request message, to the user after verifying the signature.
To achieve the above object, according to an aspect of an embodiment of the present invention, there is provided a system for chaining assets up and down.
The system for on-chain asset-based downlinking according to an embodiment of the present invention includes: the system comprises an asset application terminal system, an asset hosting system and an asset hosting party; the asset application terminal system is used for generating downlink request information based on the managed asset type and the downlink asset quantity selected or input by a user and sending the downlink request information with the signature of the asset application terminal system to the asset hosting system; the asset hosting system is used for verifying the downlink request information with the asset application terminal system signature, and after the verification is passed, the downlink request information with the asset hosting system signature is sent to the asset hosting party; and the asset hosting party is used for verifying the downlink request information with the asset hosting system signature, and returning the hosted assets with the same quantity as the downlink assets to the user after the verification is passed, so that the uplink asset and downlink are realized.
Optionally, the downlink request information includes: returning user information and downlink asset information, wherein the returning user information comprises: the real-name account book record of the user, the downlink asset information comprises: the managed asset type, the quantity of the down-link assets, the managed registration index information to be down-link and the initial block number to be down-link; the asset application terminal system is further configured to: acquiring a real-name account book record corresponding to the user, and acquiring on-chain asset information corresponding to an asset account book address of the real-name account book record according to the real-name account book record; wherein the on-chain asset information comprises the asset quantity corresponding to the asset ledger address and on-chain asset hosting registration index information; taking the on-chain asset information as current post-transaction asset information, and acquiring the preorder asset information of the current post-transaction asset information generated before transaction by the current post-transaction asset information; taking the preorder asset information as the current post-transaction asset information, tracing back to initial block information step by step, and selecting a group of initial block information in the initial block information, so that the sum of the effective asset unit quantities contained in the selected initial block information is less than or equal to the sum of the asset quantities corresponding to the asset book address; wherein the initial block information includes hosted asset registration index information and asset issuing unit number; taking the sum of the effective asset unit quantities contained in the selected initial block information as the quantity of the downlink assets, taking the initial block number corresponding to the selected initial block information as the initial block number to be downlinked, and taking the on-chain asset hosting registration index information corresponding to the selected initial block information as the hosting registration index information to be downlinked; wherein the effective asset unit quantity is the difference between the asset issuing unit quantity and the terminated asset unit quantity; and generating the downlink request information based on the number of the downlink assets, the hosting registration index information to be downlink and the initial block number of the downlink.
Optionally, the asset application terminal system is further configured to: selecting a group of initial block information from the initial block information corresponding to the asset hosting registration index information on the chain in the following way, so that the sum of the effective asset unit number contained in the selected initial block information is the same as the quantity of the assets on the chain: and sequencing the effective asset unit quantity of all the initial block information corresponding to the asset hosting registration index information on the chain, recursively selecting the effective asset unit quantity with the sum value being the quantity of the assets on the chain according to the sequencing result, and taking the initial block information corresponding to the selected effective asset unit quantity as the selected initial block information.
Optionally, the asset application terminal system is further configured to: generating on-chain asset query request information based on query requirements selected and/or input by the user in an on-chain asset query function interface and an asset book address corresponding to the user; acquiring on-chain asset information corresponding to an asset ledger address of the on-chain asset query request information and initial block information corresponding to a managed asset class of the on-chain asset information from an asset ledger system; and comparing the on-chain asset information belonging to the same managed asset type with the effective asset unit number corresponding to the initial block information, determining the on-chain asset to be off-chain according to the comparison result, and displaying the on-chain asset to the user.
Optionally, the verifying, by the asset hosting system, the downlink request information with the signature of the asset application terminal system includes: the asset hosting system acquires on-chain asset information corresponding to the asset ledger address and initial block information corresponding to the hosted asset type of the on-chain asset information from the asset ledger system according to the asset ledger address corresponding to the user; verifying the asset ledger address of the real-name ledger record in the returned user information by using a user public key in the identity certificate of the downlink request information, judging whether the asset ledger address corresponding to the to-be-downlink escrow registration index information is the same as the asset ledger address of the real-name ledger record or not after the verification is successful, and if the asset ledger address is different from the asset ledger address of the real-name ledger record, failing the verification; if the quantity of the assets on the lower link is the same as the quantity of the assets on the upper link corresponding to the asset account book address, judging whether the quantity of the assets on the lower link of the asset information on the lower link is less than or equal to the quantity of the assets on all the links corresponding to the asset account book address, and if not, failing to verify the quantity of the assets on the lower link; if yes, judging whether the managed asset type of the managed asset issuing request of the initial block number to be linked down is the same as the managed asset type of the linked asset information, wherein the linked asset number of the linked asset information is equal to the sum of the effective asset unit numbers in the managed asset issuing information contained in the initial block number to be linked down, and if yes, successfully verifying; otherwise, the verification fails.
Optionally, the asset hosting system is further configured to: acquiring a managed asset registration index identifier in corresponding initial block information according to the initial block number to be linked down of the linked asset information; according to the managed asset registration index identification, acquiring managed asset storage information corresponding to the initial block number to be linked down from a storage service system, and then sending the managed asset storage information to the asset management side; the asset hosting party is further configured to: checking and verifying the managed asset storage information, and if the managed asset storage information passes the verification, sending the downlink request information with the asset hosting party signature to the asset hosting system; and if the verification is not passed, returning a notice of the failure of the downlink operation to the asset hosting system.
Optionally, the asset hosting system is further configured to: after the signature of the downlink request information is verified, transmitting the downlink request information with the three-party signature and a downlink asset freezing operation instruction with the signature of the asset hosting system to the asset application terminal system; the three-party signature-containing downlink request information is the downlink request information with the three-party signature of the asset application terminal system, the asset hosting system and the asset hosting party; the asset application terminal system is further configured to: after the signature of the downlink request information is verified, a downlink asset freezing operation instruction with the asset hosting system signature is sent to the asset ledger system; the asset ledger system is further for: and verifying the downlink asset freezing operation instruction and the downlink request information, and freezing the assets to be frozen according to the freezing instruction information of the downlink asset freezing operation instruction after the verification is passed.
Optionally, the asset application terminal system is further configured to: acquiring frozen asset operation result information from the asset account book system, and then sending the frozen asset operation result information with the asset application terminal system signature to the asset hosting system; the asset hosting system is further to: and verifying the frozen asset operation result information with the asset application terminal system signature before sending the downlink request information with the asset hosting system signature to an asset hosting party.
Optionally, the asset hosting party is further configured to: after the managed assets with the same quantity as the downlink assets are returned and transferred to the user, sending returned and transferred information of the managed assets with the asset escrow signature to the asset escrow system; the asset hosting system is further to: verifying the signature of the managed asset return transfer completion information, after the verification is passed, adding the signature of the asset managed system in the managed asset return transfer completion information, and uploading the new managed asset storage information to the storage service system; wherein the new hosted asset retention information includes: the original managed asset saving information, the downlink request information with the three-party signature and the managed asset returning transfer information with the double signatures of the asset hosting party and the asset hosting system.
Optionally, the asset hosting system is further configured to: submitting a downlink asset voiding operation instruction with the asset hosting system signature to the asset ledger system; the asset ledger system is further for: and verifying the operation instruction for canceling the downlink assets, and after the verification is passed, canceling the assets to be canceled according to the operation instruction for canceling the downlink assets.
Optionally, the asset hosting system is further configured to: acquiring first obsolete asset operation result information from the asset ledger system according to the ledger address of the obsolete asset and the asset type of the downlink asset obsolete operation instruction, and then returning corresponding terminal block recording information according to the terminal block number of the terminal block information in the first obsolete asset operation result information; and verifying the first obsolete asset operation result information, and after the first obsolete asset operation result information passes the verification, sending the first obsolete asset operation result information with the asset hosting system signature and the hosted asset return transfer completion information with the asset hosting system signature to the asset application terminal system.
According to another aspect of an embodiment of the present invention, a method for on-chain asset downlinking is provided.
The method for the on-chain asset downlink of the embodiment of the invention comprises the following steps: the asset application terminal system generates downlink request information based on the managed asset type and the downlink asset quantity selected or input by a user, and sends the downlink request information with the signature of the asset application terminal system to the asset management system; the asset hosting system verifies the downlink request information with the asset application terminal system signature, and after the verification is passed, the downlink request information with the asset hosting system signature is sent to an asset hosting party; and the asset hosting party verifies the downlink request information with the asset hosting system signature, and returns the hosted assets with the same quantity as the downlink assets to the user after the verification is passed, so that the uplink asset downlink is realized.
One embodiment of the above invention has the following advantages or benefits: the user initiates the downlink request information through the asset application terminal system, the asset hosting system signs and sends the signed information to the asset hosting party after verifying that the downlink request information passes, and the asset hosting party returns the hosted assets with the same quantity as the downlink assets of the downlink request information to the user after verifying that the downlink request information passes, so that the downlink return of the uplink assets is realized.
Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic diagram of the major subsystems of a system for mid-chain uplinking and downlinking of assets in accordance with an embodiment of the present invention;
FIG. 2 is a schematic flow chart of the system for mid-chain uplink asset downlink of the embodiment of the present invention;
FIG. 3 is a schematic diagram of the main flow of the system for mid-chain up-chain asset down-chain to perform on-chain asset query according to the second embodiment of the present invention;
FIG. 4 is a schematic diagram of a main flow of information consistency validation performed by a system for uplink and downlink assets in a third chain according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the main flow of asset freezing in a system for mid-chain up-and-down-chain assets according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a main flow of information update in a system for linking assets up and down in a fifth chain according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of a principal flow chart of a system for uplinking and downlinking frozen assets in accordance with an embodiment of the present invention;
FIG. 8 is a schematic diagram of a main flow of a system for performing a downlink result query in a seven-chain uplink asset downlink system according to an embodiment of the present invention;
FIG. 9 is a schematic flow chart of a method for uplink asset downlink in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Fig. 1 is a schematic diagram of the main subsystems of a system for mid-chain uplinking and downlinking assets in accordance with an embodiment of the present invention. As shown in fig. 1, a system 100 for linking assets on a chain according to a first embodiment of the present invention mainly includes:
the asset application terminal system 101 is configured to generate downlink request information based on the managed asset category and the downlink asset quantity selected or input by the user, and send the downlink request information with the signature of the asset application terminal system to the asset hosting system. The user accesses the asset application terminal system installed on the terminal device, selects a downlink operation entry corresponding to a certain asset class in the asset application terminal system, and selects or inputs the quantity of assets to be downlinked (referred to as the quantity of downlink assets in this embodiment) in an interface corresponding to the downlink operation entry. The asset application terminal system acquires a real-name account book record corresponding to a user so as to acquire the on-chain asset information corresponding to the asset account book address of the real-name account book record according to the real-name account book record; then, according to the asset information on the chain, the initial block information is traced back step by step, and a group of initial block information is selected from the initial block information, so that the sum of the effective asset unit number contained in the selected initial block information is less than or equal to the sum of the asset number corresponding to the asset book address; taking the sum of the effective asset unit quantities contained in the selected initial block information as the quantity of the downlink assets, taking the initial block number corresponding to the selected initial block information as the initial block number of the to-be-downlink assets, and taking the on-chain asset hosting registration index information corresponding to the selected initial block information as the to-be-downlink asset hosting registration index information; and generating downlink request information based on the quantity of the downlink assets, the hosting registration index information to be downlink and the initial block number of the downlink.
And the asset hosting system 102 is used for verifying the downlink request information with the asset application terminal system signature, and after the verification is passed, sending the downlink request information with the asset hosting system signature to an asset hosting party. The verification process of the asset hosting system for verifying the downlink request information with the signature of the asset application terminal system comprises the following steps: the asset hosting system acquires the on-chain asset information corresponding to the asset ledger address and the initial block information corresponding to the hosted asset type of the on-chain asset information from the asset ledger system according to the asset ledger address corresponding to the user; then, the user public key in the identity certificate of the downlink request information is used for verifying the asset ledger address corresponding to the downlink request information, after the verification is successful, whether the asset ledger address corresponding to the to-be-downlink escrow registration index information is the same as the asset ledger address of the real-name ledger record is judged, and if the asset ledger address is different, the verification fails; if the quantity of the assets on the lower link is the same as the quantity of the assets on the lower link, judging whether the quantity of the assets on the lower link of the asset information on the lower link is less than or equal to the quantity of the assets of the asset information on all the links corresponding to the asset book address, and if not, the verification fails; if yes, judging whether the managed asset type of the managed asset issuing request of the initial block number to be linked down is the same as the managed asset type of the linked asset information, wherein the linked asset quantity of the linked asset information is equal to the sum of effective asset unit quantities in the managed asset issuing information contained in the initial block number to be linked down, and if yes, successfully verifying; otherwise, the verification fails.
And the asset hosting party 103 is used for verifying the downlink request information with the asset hosting system signature, and returning the hosted assets with the same quantity as the downlink assets to the user after the verification is passed. The verification process of the asset hosting party for verifying the downlink request information with the asset hosting system signature comprises the following steps: the asset hosting party verifies the signature of the asset application terminal system and the signature of the asset hosting system in the downlink request information, judges whether the identity certificate in the real-name account book record corresponding to the downlink request information is consistent with the identity certificate corresponding to the signature or not after the verification is passed, and if the identity certificate is consistent with the identity certificate corresponding to the signature, the verification is passed; otherwise, the verification is not passed. After the verification is passed, the asset hosting party initiates an operation of transferring the transaction right to the user corresponding to the return user information in the downlink request information to the asset right registration system, namely, the asset hosting party transfers the managed assets with the same quantity as the downlink assets in the downlink request information to the corresponding user through the asset right registration system, and thus, the uplink asset downlink is completed.
Fig. 2 is a schematic flow chart of the system for performing uplink asset downlinking according to the embodiment of the present invention. As shown in fig. 2, the main process of the system for uplink asset downlink of the first embodiment of the present invention for uplink asset downlink includes the following steps:
step S201: and the user accesses the asset application terminal system installed on the terminal equipment, submits the identification information according to a preset login identification mode and logs in the asset application terminal system. The asset application terminal system is system software which is installed on the terminal equipment and corresponds to the asset ledger system; a user may download and install asset application end system software from an asset hosting system by accessing the asset hosting system. The terminal device may be various electronic devices having a display screen and supporting web browsing, such as a mobile phone, a tablet computer, a desktop computer, and the like. The login identification mode may be a user name and password identification mode, a fingerprint identification mode, a face identification mode, and the like, and the corresponding identification information may be: a user name and a password, or an identification code in a preset format corresponding to the user name. The identification code in the preset format may be a password in the form of characters, or may be a biometric identification code, such as a fingerprint, facial information, iris information, etc. of the user.
Step S202: and after the asset application terminal system determines that the user is a real-name user associated with the asset account book address, acquiring a real-name account book record corresponding to the user from the asset hosting system. The asset hosting system stores real-name account book records corresponding to the users. The asset hosting system may be a system that hosts registration management of a user to under-link real-name registered assets by designated asset hosting parties and registration management of a process of publishing digital assets on a blockchain by hosted assets, which may be accessed by the user via the Web or otherwise, the process of publishing digital assets including an off-link asset uplink process and an on-link asset downlink process. The method comprises the following steps that firstly, a user is managed by an asset management part, and then the asset management system issues digital assets on a chain to an asset account book system based on a block chain; and (4) performing the on-chain asset downgoing, namely, invalidating the digital assets of the user on the blockchain, and returning and transferring the under-chain managed assets corresponding to the digital assets to the user. The user may access the asset hosting system via the Web or otherwise. Wherein, real-name account book record includes: an identity certificate associated with identity information of a user and an asset ledger address associated with identity information of a user, the identity certificate comprising: the identity of the user and the user public key. The identity certificate may be a CA (certificate Authority) certificate provided for information non-repudiation.
And the user public key and the user private key are generated by the asset application terminal system locally by adopting an asymmetric encryption algorithm. The user private key can be used for signing data information such as user identity information, user bank card information, user biological identification code information or user identity certificate and the like, and can also be used for signing digital asset information in subsequent asset transaction or financing process so as to confirm ownership of transaction; the user public key can be used for correspondingly verifying the data information signed by the user private key.
Step S203: and the asset application terminal system displays the downlink operation entries corresponding to the asset classes to the user through the terminal equipment. In the embodiment of the invention, the digital assets are classified in advance, and each type of digital assets corresponds to a unique asset class number. The digital assets comprise divisible digital assets and indivisible digital assets, wherein the divisible digital assets refer to managed assets contained in the initial block and can be divided under a chain, such as stocks, gold and the like; the indivisible digital assets mean that the managed assets contained in the initial block cannot be divided under the chain, such as houses, cultural relics, copyright, golden amalgamation and the like. When two assets belong to the same type of divisible digital assets, operations can be performed between the two assets. Even if two inseparable digital assets belong to the same category, no operation can be performed between the two assets, for example, although both the digital asset property a and the digital asset property B belong to the property category, no operation can be performed between the two assets. The asset class is used to determine whether the assets belong to divisible digital assets or indivisible digital assets, so that the link-down clearing is facilitated.
Step S204: and selecting a downlink operation entry corresponding to the managed asset category to be downlinked and selecting and/or inputting the quantity of the downlink assets by the user through the terminal equipment. And the user selects a downlink operation entry corresponding to a certain asset class, the asset application terminal displays real-name identity information of the user after confirming that the user is a real-name user, and the user selects the quantity of the downlink assets and confirms to perform downlink operation.
Step S205: the asset application terminal system generates downlink request information based on the managed asset type and the downlink asset quantity, and sends the downlink request information with the asset application terminal system signature to the asset management system. The downlink request information refers to a request that a user can initiate the downlink return of the assets for the digital assets which are uplinked. In an optional embodiment, the downlink request information includes: return user information and downlink asset information, etc. The return user information includes: the user identification, the real-name account book record and the like, wherein the user refers to a user with asset downlink requirements. The downlink asset information may be asset information requested to be linked down by a user, and in an alternative embodiment, the downlink asset information includes: managed asset type, quantity of assets in a downlink, managed registration index information to be downlinked (in the embodiment, the information is stored in a list form), initial block number of the to-be-downlinked block, and the like. The specific implementation of generating the downlink request information is as follows: firstly, acquiring on-chain asset information corresponding to an asset ledger address of a real-name ledger record according to the real-name ledger record, wherein the on-chain asset information comprises the asset quantity corresponding to the asset ledger address and on-chain asset hosting registration index information (in the embodiment, the information is stored in a list form); then, the on-chain asset information is used as the current after-transaction asset information, and the current after-transaction asset information is used for acquiring the preorder asset information of the current after-transaction asset information generated before the transaction; taking the pre-order asset information as the current post-transaction asset information, tracing back to the initial block information step by step, and selecting a group of initial block information in the initial block information, so that the sum of the effective asset unit number contained in the selected initial block information is less than or equal to the sum of the asset number corresponding to the asset book address; taking the sum of the effective asset unit quantities contained in the selected initial block information as the quantity of the downlink assets, taking the initial block number corresponding to the selected initial block information as the quantity of the initial block to be downlinked, taking the on-chain asset hosting and registering index information corresponding to the selected initial block information as the index information to be downlinked hosting and registering, and generating the downlink request information based on the quantity of the downlink assets, the index information to be downlinked hosting and registering and the quantity of the initial block to be downlinked. The effective asset unit quantity is the result of subtracting the terminated asset unit quantity from the asset issue unit quantity.
For the case where the user is free to input a quantity of downlink assets, a conventional dynamic programming algorithm can be used to find the same possible combinations as the quantity of downlink assets when selecting the initial chunk information. For the condition that a user selects a plurality of initial block information according to the inquired quantity of assets of a certain type of assets to determine the quantity of assets in a downlink, the effective asset unit quantity of all the initial block information corresponding to the asset hosting registration index information in the chain can be sorted, the effective asset unit quantity with the sum value being the quantity of the assets in the downlink is selected recursively according to the sorting result, and the initial block information corresponding to the selected effective asset unit quantity is used as the selected initial block information. Here used to recursively find all possible combinations for which the sum of the number of valid asset units is the number of linked assets.
Step S206: and after verifying the signature of the downlink request information, the asset hosting system verifies the downlink request information, the uplink asset information and the initial block information which are stored by the asset ledger system, and after the verification is passed, the downlink request information with the signature of the asset hosting system is sent to the asset hosting party. The asset ledger system is based on a block chain technology, and verification, query, recording and other operations can be realized by the common identification nodes on the system. This step is used to request the asset escrow party to handle escrowed asset return transfer operations. The verification process of the downlink request information, the uplink asset information and the initial block information is multiple verification, and the method is specifically realized as follows:
the asset hosting system sends a query request to the asset ledger system;
the asset account book system searches all on-chain asset information corresponding to the asset account book address of the real-name account book record and initial block information corresponding to the managed asset type according to the real-name account book record, and feeds back the search result to the asset hosting system;
the asset hosting system verifies whether the downlink request information conforms to the initial block information stored in the asset ledger system and the hosted asset storage information stored in the storage service system, and the specific verification process is as follows:
verifying the asset ledger address of the real-name ledger record in the returned user information by using a user public key in an identity certificate of the downlink request information, and when the verification is passed and the asset ledger address corresponding to the downlink asset information of the downlink request information is the same as the asset ledger address of the real-name ledger record, passing the first verification;
when the quantity of the downlink assets of the downlink asset information of the downlink request information is less than or equal to the quantity of the assets of all the uplink asset information corresponding to the asset account book address, and the sum of the quantity of the effective asset units of the effective initial blocks corresponding to the asset categories of the downlink asset information of the downlink request information is greater than or equal to the quantity of the downlink assets, the second verification is passed;
and when the managed asset type of the managed asset issuing request of the initial block number to be linked down is the same as the managed asset type of the linked asset information, and the linked asset number of the linked asset information of the linked request information is equal to the sum of the effective asset unit number in the managed asset issuing information of the managed asset issuing request in the initial block information of the initial block number to be linked down, the third verification is passed. And after the verification is passed, sending the downlink request information with the asset hosting system signature to an asset hosting party.
Step S207: and the asset hosting party verifies the downlink request information with the asset hosting system signature, and returns and transfers the hosted assets corresponding to the index information to be registered by the downlink hosting in the downlink asset information of the downlink request information to the user after the verification is passed. The asset hosting party can be a qualified organization with a certain public trust strength, such as a commercial bank and a business system thereof; the asset hosting party can be an entity for receiving hosted assets and can adopt legal relationships such as funds and the like; in some practical cases, the entity may manually process the information. The specific verification content comprises the following steps: and the asset hosting party verifies the signature of the asset application terminal system and the signature of the asset hosting system in the downlink request information and verifies whether the identity certificate in the real-name ledger record corresponding to the downlink request information is consistent with the identity certificate corresponding to the signature used when the asset hosting system registers the asset. The verification signature is used for confirming that the downlink request information is valid and credible; and the identity certificate is verified, and the identity certificate is used for determining that the user applying for asset downlink is consistent with the user identity corresponding to the managed asset in the managed asset returning and transferring operation.
Since the asset hosting system has verified the downlink request information in step S206, the asset hosting party can perform the hosted asset return transfer operation according to the content of the downlink request information signed by the asset hosting system, specifically: and the asset hosting party initiates an operation of transferring the transaction right to the user corresponding to the returned user information in the downlink request information to the asset right registration system. The asset rights registration system is a traditional asset rights registration system under the chain. The operation may also involve some manual or offline activity depending on the specific business process of the asset rights registration authority.
Example two: between step S202 and step S203, a user may initiate an operation of querying the on-chain returnable assets, and the user may determine the quantity of the down-chain assets according to the queried on-chain returnable assets. Here, it is required to ensure that the quantity of the assets on the downlink is less than or equal to the assets on the queried chain (referred to as the assets on the chain to be downlinked in this embodiment). In order to implement the above query process, the system for chaining assets and chaining down according to the embodiment of the present invention further includes an asset account book system, and the specific implementation process is as follows:
fig. 3 is a schematic diagram of the main flow of the system for mid-chain up-link asset down-link to perform the on-chain asset query according to the second embodiment of the present invention. As shown in fig. 3, the main process of the system for performing asset chaining in the second embodiment of the present invention to perform asset chaining inquiry includes the following steps:
step S301: and the asset application terminal system displays the on-chain asset query function interface to a user on the terminal equipment. The on-chain asset query function interface is used for user input and/or selection of query requirements.
Step S302: the user enters and/or selects a query requirement in the on-chain asset query function interface to generate on-chain asset query request information. The on-chain asset query request information refers to a request that a user can initiate digital asset query on the digital assets which are linked up by the user. In an alternative embodiment, the on-chain asset query request information includes: an asset ledger address in the real-name ledger record and the query requirement. The query requirement refers to some limiting factors which can be used by a user for performing on-chain asset query. In an alternative embodiment, the query requirement includes: the query condition and the query result can be any one or more of the following items: asset number, asset class, asset status, etc. Wherein the asset status comprises: active state, frozen state, disabled state, etc.
The query result may be any one or more of the following: the method comprises the steps of acquiring the corresponding managed assets, wherein the managed assets comprise the number of the assets, the details of the assets, initial block information, terminal block information, asset transaction history records, managed asset storage information corresponding to the initial blocks, managed asset storage information corresponding to the terminal blocks and the like. The initial block information includes: initial block number, asset serial number, managed asset registration index information, managed asset description information, rights holder address, number of asset issuing units, number of valid asset units. The termination block information includes: a list of terminated initial block records corresponding to the terminating block, a terminating block number, and updated hosted asset registration index information with storage service system signature. The managed asset retention information may be considered comprehensive managed asset information stored in the storage service system, relating to the return of the down-link asset to the up-link asset hosting or down-link asset hosting, and confirming that the asset hosting party is the authorized person of the managed asset, and in an alternative embodiment, the managed asset retention information includes: the paper document is electronic or purely electronic certificate information (such as an electronic signature archive or a result queried by an asset right registration system).
Assuming that the query requirement in this embodiment includes the initial block information, the asset application terminal system needs to acquire, from the asset ledger system, on-chain asset information corresponding to the asset ledger address of the first on-chain asset query request information and initial block information corresponding to the managed asset category of the on-chain asset information, specifically see step S303. Assuming that the query requirement in this embodiment only includes the asset number, the asset application terminal system only needs to acquire the on-chain asset information corresponding to the asset ledger address of the on-chain asset query request information from the asset ledger system.
Step S303: the asset application terminal system accesses the asset ledger system to obtain asset transaction information from the asset ledger system corresponding to the asset ledger address of the on-chain asset query request information. Wherein the asset transaction information comprises: the method comprises the following steps of on-chain asset information, initial block information corresponding to a managed asset category of the on-chain asset information and the like, wherein the on-chain asset information comprises the following steps: the asset account book address, managed asset type, asset quantity, on-chain asset hosting registration index information, associated asset information and the like, wherein the initial block information comprises: an initial block number, a hosted asset issuance request with an asset hosting system signature, and the like, the hosted asset issuance request including: the managed asset registration index information with the storage service system signature comprises the managed asset registration index information, the managed asset issuance information and the like, wherein the managed asset registration index information comprises: the managed asset registration index identification, the tamper-resistant information of the managed asset storage information and the like, wherein the managed asset issuing information comprises: managed asset class, managed asset description information, authority address, number of asset issuing units, etc. The asset application terminal system accesses the asset account book system, inquires all the chain asset information corresponding to the asset account book address, and inquires the associated initial block information according to the managed asset type of the chain asset information; and the asset account book system feeds back the query result to the asset application terminal system. The tamper-resistant information is: and the hosting asset stores the digital fingerprint information of the information, or utilizes the asset hosting system and the storage service system to sign the digital fingerprint information. The digital fingerprint information is information obtained by performing an operation on the managed asset storage information by using a certain algorithm, for example, a hash value obtained by performing a hash operation on the managed asset storage information. It should be noted that the digital fingerprint information may also be information obtained by calculating the managed asset storage information by using other algorithms, as long as the calculated information uniquely corresponds to one managed asset storage information.
The realization process of backtracking and inquiring the associated initial block information of the on-chain asset information inquired by the asset account book address comprises the following steps: (1) Using the on-chain asset information inquired according to the asset account book address as the current post-transaction asset information; (2) Generating preorder asset information of the current transacted asset information before inquiring the current transacted asset information; (3) And (3) taking the preorder asset information as the current post-transaction asset information, and repeatedly executing the step (2) until the preorder asset information is managed asset issuing information contained in initial block information, wherein the preorder asset information is the initial block information contained in the query result.
The query result is divided into two cases, namely: one managed asset class uniquely corresponds to one initial chunk information, case two: one managed asset class corresponds to a plurality of initial chunk information. For case one, a chain-down operation may be performed on a hosted on-chain asset (referred to as a hosted asset in this embodiment) if and only if the number of assets corresponding to the asset ledger address is the same as the number of valid asset units of the initial block information. For the second case, the assets of the second category can be added with the assets of the same category (the assets of the chain are divisible digital assets) after hosting the assets for multiple times, so that one asset category corresponds to multiple pieces of initial block information; when the quantity of the assets corresponding to the asset account book address is larger than or equal to the sum of the effective asset unit quantities of one or more pieces of initial block information, the chain-down operation can be performed on the chain-up assets of the managed chain, namely, the managed assets corresponding to a plurality of pieces of initial block information are chain-down at one time.
Step S304: and the asset application terminal system compares the asset quantity of the on-chain asset information belonging to the same managed asset type with the effective asset unit quantity corresponding to the initial block information according to the inquired managed asset type, and determines the on-chain asset to be linked down according to the comparison result. The step is used for judging the digital assets which can be returned in the downlink according to the query result. The downlink is an overall downlink of the asset quantity of one asset class, namely, the downlink is in units of initial blocks, so that the downlink asset quantity is required to be equal to the sum of the asset distribution quantities in the initial block information of a group of the same asset classes. In an embodiment, an on-chain asset to be downlinked is determined as follows: for the first condition, taking the on-chain asset corresponding to the initial block information as the on-chain asset to be linked down; and for the second situation, selecting one or more pieces of initial block information according to the quantity of the assets corresponding to the asset account book address, enabling the sum of the effective asset unit quantity corresponding to the selected initial block information to be less than or equal to the quantity of the assets, and taking the on-chain assets corresponding to the selected initial block information as the on-chain assets to be subjected to the off-chain.
In a preferred embodiment, the user may need to obtain hosted asset retention information through the asset application terminal system in addition to asset transaction information from the asset ledger system. The managed asset saving information is saved in the storage service system, the system for linking the assets up and down according to the embodiment of the present invention further includes the storage service system, and the query requirement set by the user in step S302 includes the managed asset saving information corresponding to the initial block. The storage service system in the embodiment needs to be secure and trusted, and may be a cloud storage service system, one device with a storage function, or a system formed by connecting a plurality of devices with a storage function through a network. See step S305 for a specific implementation.
Step S305: the asset application terminal system accesses the storage service system to acquire corresponding hosted asset storage information from the storage service system according to the hosted asset registration index identifier and verify the tamper-resistant information of the hosted asset storage information. Wherein the hosted asset retention information includes: the system comprises asset hosting upper chain request information with double signatures of the asset application terminal system and the asset hosting system, and asset right hosting transfer information with three-party signatures of the asset application terminal system, the asset hosting system and the asset hosting party. In an alternative embodiment, the escrow asset holding information is provided with a signature of an asset escrow system and a signature of a storage service system (the double signature is tamper-proof information), and the double signature is verified to ensure that the information is not tampered. The asset application terminal system accesses the storage service system and inquires hosted asset storage information corresponding to a hosted asset registration index identifier in hosted asset registration index information in a hosted asset issuing request of initial block information of asset transaction information; and the storage service system feeds back the query result to the asset application terminal system.
The asset hosting uplink request information comprises: and the system comprises an asset application terminal system, an asset hosting system, a link asset hosting transfer request message, a hosted asset issuing message, an asset hosting party message and the like with double signatures of the asset application terminal system and the asset hosting system. The managed asset issuance information is issuance information when an under-link asset is managed to the link, and the asset escrow information is information of an asset escrow person responsible for escrowing the under-link asset issued to the link. In an alternative embodiment, the information of the request for transfer of the asset hosting under link includes: and the under-chain asset hosting transfer request instruction with the asset application terminal system signature and the real-name ledger record. The under-chain asset hosting transfer request instruction comprises: the method comprises the following steps of (1) under-chain asset registration information and the amount or quantity of the managed transfer asset, wherein the under-chain asset registration information refers to under-chain asset information registered in an asset right registration system by a user, such as which types of assets the user owns, the amount or quantity of each type of assets, relevant state information of the assets (such as whether the assets are pledged or not, whether flaws exist or not) and the like; the amount or quantity of the escrowed transfer asset refers to the amount or quantity of the asset under the chain that the user requests to escrow transfer. In an alternative embodiment, the under-chain asset registration information includes: an access address of an asset right registration system, asset identification information including: the identity of the user, the asset identification or number, the amount or quantity of the asset, etc.
The asset rights escrow transfer information includes: asset right transfer voucher information, voucher information for assets held by asset escrow, updated under-link asset registration information, and other asset description and registration information.
In a preferred embodiment, in order to better present the acquired information to the user, step S203 may be replaced by the following process: and the asset application terminal system displays the on-chain asset information, the initial block information, the managed asset storage information and the down-chain operation entry corresponding to the asset type to a user through terminal equipment. And the asset application terminal system displays the on-chain asset information, the initial block information, the managed asset storage information and the down-chain operation entry corresponding to each asset type to a user.
In a preferred embodiment, the user may need to obtain the downlinked asset registration information through the asset application terminal system in addition to the asset transaction information from the asset ledger system. The information of the asset registration under the chain is stored in the asset right registration system, and the system of the asset registration under the chain according to the embodiment of the present invention further includes the asset right registration system, and the query request set by the user in step S302 includes the information of the asset registration under the chain. The specific implementation is shown in step S306: the asset application terminal system locally accesses the asset entitlement registration system to obtain the user's downlinked asset registration information from the asset entitlement registration system. Wherein the asset entitlement registration system provides an API interface for asset entitlement verification queries, the linked asset registration information comprising: asset identification or number, asset amount or quantity, etc. The asset application terminal system accesses the asset right registration system and inquires the down-link asset registration information of the user; and the asset right registration system feeds back the query result to the asset application terminal system. This step is used to query the user's own under-link asset registration information from the under-link asset rights registration system. It should be noted that the embodiment of the present invention does not limit the execution sequence of the steps, and the steps may be executed after step S302.
Example three: in step S206, before sending the downlink request information with the asset hosting system signature to the asset hosting party for downlink return, it is further required to confirm that the hosted asset saving information corresponding to the initial chunk information is consistent with the information currently registered in the asset right registration system, so as to ensure that the hosting party has the right to return the hosted asset corresponding to the initial chunk information to the user. The concrete implementation is as follows:
fig. 4 is a schematic main flow chart of the system for performing information consistency confirmation on the uplink asset and downlink in the third embodiment of the present invention. As shown in fig. 4, the main process of the system for confirming information consistency of the asset uplink and downlink of the third embodiment of the present invention includes the following steps:
step S401: the asset hosting system acquires a hosted asset registration index identifier in corresponding initial block information according to the to-be-linked initial block number of the linked asset information in the linked request information, and sends the hosted asset registration index identifier to the storage service system through a query request. The asset hosting system acquires corresponding initial block information according to the initial block number to be linked down, and inquires corresponding hosted asset storage information from the storage service system based on the hosted asset registration index identification of the hosted asset registration index information of the hosted asset issuing request of each acquired initial block information.
Step S402: and the storage service system inquires managed asset storage information corresponding to the initial block number to be linked down according to the managed asset registration index identification in the inquiry request, and then feeds the inquired managed asset storage information back to the asset hosting system.
Step S403: and the asset hosting system sends the hosted asset storage information to the asset hosting party to request to be checked and verified with the asset right registration system.
Step S404: the asset hosting party accesses the asset right registration system and inquires and checks the received hosted asset preservation information to judge whether the asset right hosted transfer information of the hosted asset preservation information is consistent with the corresponding information of the asset right registration system, and if so, the step S405 is executed; if not, go to step S406.
Step S405: and the asset hosting party sends the downlink request information with the asset hosting party signature to the asset hosting system and requests to perform downlink asset freezing operation. In the process, the managed asset storage information of the storage service system is compared with the information of the asset right registration system, if the managed asset storage information of the storage service system is consistent with the information of the asset right registration system, the verification is passed, and the asset management side has the right to return the asset specified in the downlink request information to the user. The downlink request information at the moment has an asset application terminal system, an asset hosting system and a three-party signature of an asset hosting party.
Step S406: the asset hosting party returns a notification to the asset hosting system that the downlinked operation failed. In the process, the managed asset storage information of the storage service system is compared with the information of the asset right registration system, and if the managed asset storage information and the information of the asset right registration system are not consistent, the managed asset storage information and the information of the asset right registration system indicate that the managed asset storage information and the information of the asset right registration system are abnormal in the managed process and the downlink operation fails.
In a preferred embodiment, after step S403 is completed, the asset host may further confirm whether the asset owner in the asset right hosting transfer information in the asset saving information is the asset host. If the property owner is not the property host, the property host has no right to return the property specified in the downlink request information to the user, and a notification of the failure of the downlink operation is returned to the property host system.
Example four: in order to ensure that, in the asset returning process, the managed asset (referred to as a down-link asset in this embodiment) corresponding to the down-link asset index record in the down-link asset information of the down-link request information and the corresponding initial block information do not perform other operations, the down-link asset and the initial block information corresponding to the down-link asset need to be frozen to ensure that the down-link returning operation can be performed normally. The specific implementation requires that after the verification of the downlink request information, the on-chain asset information stored in the asset ledger system, and the initial block information is performed in step S206, and before the downlink request information with the signature of the asset hosting system is sent to the asset hosting party, the following processing procedures are performed:
fig. 5 is a schematic diagram of the main flow of asset freezing in the system for linking the assets up and down in the four chains according to the embodiment of the present invention. As shown in fig. 5, the main process of performing asset freezing in the system for on-chain and off-chain assets according to the fourth embodiment of the present invention includes the following steps:
step S501: and after verifying the signature of the downlink request information, the asset hosting system sends the downlink request information with the three-party signature and a downlink asset freezing operation instruction with the signature of the asset hosting system to the asset application terminal system. Wherein the downlink asset freezing operation instruction comprises: freezing instruction information, downlink request information with double signatures of an asset application terminal system and an asset hosting system, and the like; the freeze instruction information may represent main information in a downlink asset freeze operation instruction, and in an alternative embodiment, the freeze instruction information includes: the assets to be frozen refer to all down-link asset records in the down-link asset information of the down-link request information, wherein the down-link asset records are in the index information to be subjected to down-link hosting registration. This step is used to request a downlink asset freeze operation from the asset application terminal system.
Step S502: and after verifying the signature, the asset application terminal system sends a downlink asset freezing operation instruction with the signature of the asset hosting system to the asset ledger system. And after verifying the signature of the downlink request information and the signature of the downlink asset freezing operation instruction, the asset application terminal system sends the downlink asset freezing operation instruction with the asset hosting system signature to the asset ledger system.
Step S503: and after independently verifying the signature of the downlink asset freezing operation instruction, the signature of the downlink request information and the freezing instruction information of the downlink asset freezing operation instruction, the asset account book system freezes the assets to be frozen according to the freezing instruction information of the downlink asset freezing operation instruction, and records the frozen asset transaction and result assets. The verification of the freezing instruction information specifically comprises the following steps: the asset class of the result assets of the frozen asset transaction and the residual asset transaction in the freezing instruction information is the same as the managed asset class of the down-link asset information in the down-link asset freezing operation instruction, and the sum of the asset quantities is the same as the down-link asset quantity of the down-link asset information.
In a preferred embodiment, the verification operation performed by the asset hosting system in step S206 may also be performed. The verification operation of the step is completed by the chain consensus node of the asset ledger system, and after the verification is successful, the chain consensus node executes the asset freezing operation and records the frozen asset transaction.
Step S504: and the asset application terminal system searches all stock assets and historical transaction assets corresponding to the account book address of the asset to be frozen and the managed asset type in the asset account book system according to the real-name account book record so as to obtain the operation result information of the frozen asset. Wherein the frozen asset operation result information comprises: account book address, asset type, frozen asset information, etc. of the frozen asset; the frozen asset information may represent primary information in a frozen asset operation result generated after a downlink asset freezing operation instruction is executed, and may include: frozen assets, frozen asset number, frozen asset record index, and remaining asset record index, etc.
Step S505: and the asset application terminal system verifies the acquired frozen asset operation result information, and after the verification is passed, the frozen asset operation result information with the asset application terminal system signature is sent to the asset hosting system. The frozen asset operation result information with the signature of the asset application terminal system can be regarded as result information which is generated after the freezing of the downlink asset and is authenticated by the asset application terminal system. The verified content includes:
the frozen assets in the frozen asset information of the frozen asset operation result information are the same as the assets to be frozen in the freezing instruction information of the linked asset freezing operation instruction;
the number of the frozen assets in the frozen asset information of the frozen asset operation result information is the same as the downlink asset number of the downlink asset information in the downlink request instruction of the downlink asset freezing operation instruction;
and the frozen asset record index and the residual asset record index in the frozen asset information of the frozen asset operation result information are consistent with the contents of the frozen asset transaction and the residual asset transaction in the freezing instruction information in the downlink asset freezing operation instruction.
The step is used for informing the asset hosting system that the asset freezing is finished and requesting the asset hosting system to handle the return transfer of the hosted asset. Accordingly, the asset escrow system may receive the frozen asset operation result information as a start signal that the escrow asset return transfer operation is to be transacted.
Step S506: after the asset hosting system verifies the signature, the frozen asset operation result information is inquired and verified in the asset ledger system. And after verifying the signature, the asset hosting system automatically queries the asset ledger system and checks the asset freezing result based on the real-name ledger record of the asset ledger system. And after the asset hosting system obtains the frozen asset operation result information from the asset ledger system, verifying the frozen asset operation result information according to the mode of the step S505.
Example five: after the managed asset is returned to the user (i.e., step S207), the registration information of the offline asset after the returned asset needs to be updated to the asset hosting system, so that the asset hosting system can completely reserve the whole process of the return of the asset, and the return transfer information registered by the asset hosting system is included in the terminal block information formed by the invalidation operation of the offline returned managed asset on the subsequent chain. The information updating process is an important step for solving the problems that the assets on the existing block chain completely depend on the block chain and cannot be transferred from the chain to the chain. The concrete implementation is as follows:
fig. 6 is a schematic main flow chart of information updating performed by the system for linking assets up and down in the five chains according to the embodiment of the present invention. As shown in fig. 6, a main process of performing information update by the system for linking assets up and down according to the fifth embodiment of the present invention includes the following steps:
step S601: and the asset hosting party sends the managed asset returning and transferring completion information with the asset hosting party signature to the asset hosting system. Wherein the managed asset return transfer completion information includes: the third-party signed downlink request information, the confirmation completion managed asset return transfer information and the managed asset return transfer information are the same as the asset right managed transfer information in the step S305. The downlink request information is provided with the asset application terminal system, the asset hosting system and the asset hosting party signature, so that the information is safer and more credible. It should be noted that the asset hosting system may not be able to identify credential information of the managed asset return transfer information, and this embodiment is based on that the asset hosting system trusts the asset hosting party, and a subsequent user may query the managed asset return transfer information by himself to perform verification.
Step S602: after the asset hosting system verifies the signature, the signature of the asset hosting system is added to the hosted asset return transfer completion information, and then new hosted asset storage information is generated and uploaded to the storage service system. After verifying the signature of the asset hosting party, the asset hosting system adds the signature to the return transfer completion information of the hosted asset, generates new hosted asset storage information based on the downlink request information and the return transfer completion information of the hosted asset, and uploads the new hosted asset storage information to the storage service system. This step is used to update the hosted asset retention information of the asset hosting system and the storage service system.
The new managed asset storage information is added with the downlink request information and the managed asset returning and transferring information on the basis of the original managed asset storage information of the storage service system, and the managed asset returning and transferring information is added to the asset right managed and transferring information, so that the whole process information of asset hosting and returning can be completely reserved in the managed system, and subsequent query is facilitated. In an alternative embodiment, the new hosted asset retention information includes: original managed asset saving information, downlink request information with a three-party signature, managed asset return transfer information with a double signature of an asset hosting party and an asset hosting system and the like. In an embodiment, according to the initial block numbers to be linked down of the downlink request information, the managed asset registration index information in the issuance request information of each initial block number may retrieve the corresponding managed asset saving information, and the storage service system may supplement the managed asset return transfer information to the managed asset saving information.
Step S603: the storage service system sends the new hosted asset registration index information with the storage service system signature to the asset hosting system. And the managed asset returning transfer information is updated and added in the managed asset saving information corresponding to the managed asset registration index identifier in the new managed asset registration index information, and the anti-tampering information of the managed asset saving information is updated.
Step S604: and the asset hosting system inquires the storage information of the new hosted asset from the storage service system according to the hosted asset registration index identifier of the new hosted asset registration index information and verifies the new hosted asset. The verification content comprises the following steps: whether the tamper-proof information of the new hosted asset storage information of the asset hosting system is consistent with the tamper-proof information calculated by the inquired new hosted asset storage information of the storage service system or not is judged; and whether the inquired new managed asset saving information of the storage service system contains managed asset returning transfer information or not. If the anti-tampering information of the new hosted asset storage information contained in the asset hosting system is the same as the anti-tampering information calculated according to the new hosted asset storage information of the storage service system, it is indicated that the new hosted asset storage information of the storage service system is real and has not been tampered.
Example six: after the managed asset is returned to the user (i.e., step S207), the frozen asset is also discarded. In the process, the frozen digital assets on the chain before the return transfer are subjected to invalidation operation, and the terminal block information is generated based on the initial block information corresponding to the frozen assets, wherein the terminal block information stores the return transfer information updated by the terminal initial block record index and the storage service system, so that the terminal state of the assets on the chain is realized, and the asset-on-chain operation is completely finished. The specific implementation process is as follows:
fig. 7 is a schematic flow diagram illustrating the freezing asset invalidation of the system for uplinking and downlinking assets in the sixth embodiment of the present invention. As shown in fig. 7, the system for uplink asset and downlink of the sixth embodiment of the present invention performs the main process of freezing assets for obsolescence, which includes the following steps:
step S701: the asset hosting system submits a downlink asset voiding operation instruction with an asset hosting system signature to the asset ledger system. Wherein the operation instruction for revoking the downgoing assets comprises: the method comprises the following steps of asset type, obsolete asset information, initial block number to be terminated, new managed asset registration index information with storage service system signature and the like, wherein the obsolete asset information comprises the following steps: assets to be voided, quantity of assets to be voided, and voided asset transactions, etc.
Step S702: and after verifying the downlink asset invalidation operation instruction, the asset account book system invalidates the assets to be invalidated according to the downlink asset invalidation operation instruction and records the transaction of the invalidated assets, the result assets and the information of the ending block. The final chunk is generated corresponding to the frozen initial chunk, which is the last transaction of the downlinked digital asset transactions. The verification content comprises the following steps:
the on-chain consensus node of the asset ledger system independently verifies the signature of the down-chain asset revocation operation instruction;
whether the identity certificate of the asset ledger system is authorized to invalidate the assets to be invalidated;
the asset class of the lower-link asset invalidation operation instruction is the same as the asset class of the inquired frozen asset operation result information;
the assets to be invalidated in the invalidated asset transaction in the invalidated asset information are consistent with the frozen asset quantity of the frozen asset information in the frozen asset operation result information and the frozen asset record index;
the number of assets to be invalidated in the invalidated asset transaction in the invalidated asset information is consistent with the frozen asset number of the frozen asset information in the frozen asset operation result information;
the initial block number to be terminated is the same as the initial block number to be downlinked of the downlink asset information in the downlink request information with the three-party signature; and
and verifying the signature of the new hosted asset registration index information and the tamper-proof information of the new hosted asset storage information corresponding to the new hosted asset registration index information. The verification can determine the accuracy of the operation command for the invalidation of the downlink assets and various information in the command, and the safety of the invalidation operation process in the embodiment of the invention is improved.
Step S703: the asset hosting system acquires first obsolete asset operation result information from the asset ledger system according to the ledger address of the obsolete asset and the asset type of the downlink asset obsolete operation instruction, and then returns corresponding end block recording information according to the end block number of the end block information in the first obsolete asset operation result information. The first obsolete asset operation result information is a result obtained after executing the instruction of the down-link return asset obsolete operation. In an alternative embodiment, the first obsolete asset operation result information includes: the system comprises an account book address, an asset type, obsolete asset information, terminal block information and the like of the obsolete asset, wherein the obsolete asset information comprises the following information: the abandoned assets, the quantity of the abandoned assets, the index of the abandoned asset record and the like, and the information of the terminal block comprises: the number of the initial block to be terminated, the number of the terminal block, etc. The final agglomeration recording information includes: the method comprises the following steps of block number, initial block record index, new managed asset registration index information with storage service system signature and the like, wherein the initial block record index comprises: the block number and initial block record hash information, etc.
Step S704: and after verifying the first obsolete asset operation result information, the asset hosting system sends the first obsolete asset operation result information with the asset hosting system signature and the hosted asset return transfer completion information with the asset hosting system signature to the asset application terminal system. The invalid asset operation result information contains signatures of both the asset hosting party and the asset hosting system. The verification content comprises the following steps:
the scrapped assets of the scrapped asset information are the same as the to-be-scrapped assets of the downgoing asset scrapping operation instructions;
the quantity of the scrapped assets of the scrapped asset information is the same as the quantity of the to-be-scrapped assets of the downgoing asset scrapping operation instruction;
the voided asset and the quantity corresponding to the voided asset record index of the voided asset information correspond to the voided asset and the quantity;
the number of the initial block which is ended in the ending block information is the same as the number of the initial block to be ended in the operation instruction for voiding the downlink asset;
the number of the terminal block information corresponds to the number of the terminal block recording information;
the list formed by the block numbers in the initial block record indexes of all the final block record information is the same as the list formed by the initial block numbers to be terminated of the operation command for invalidating the downlink asset;
the initial block record hash information of the corresponding block number in the initial block record index of each terminal block record information conforms to the content verification of the initial block information; and
and the new hosted asset registration index information with the storage service system signature of the terminal block information is the same as the new hosted asset registration index information with the storage service system signature of the downlink asset revocation operation instruction. After passing the multiple verification, the invalidation of frozen assets on the chain during the asset-downgoing process can be considered to be correct.
This step is used to inform the asset application terminal system of the completion of the transfer of the managed asset return and the completion of the revocation of the on-chain asset.
Example seven: after the assets on the chain are returned to the user in a downlink manner, the return result of the downlink manner can be inquired, such as the inquiry of the digital assets held on the current chain, the invalid digital assets and the updated storage information of the managed assets. The specific implementation process is as follows:
fig. 8 is a schematic main flow chart of a system for performing downlink result query on a seven-mid-chain asset according to an embodiment of the present invention. As shown in fig. 8, the main process of performing a downlink result query by the system for uplink asset downlink according to the seventh embodiment of the present invention includes the following steps:
step S801: after verifying the signature of the first obsolete asset operation result information and the signature of the managed asset return transfer completion information, the asset application terminal system queries the obsolete asset information on the asset account book system; and searching inventory assets and historical transaction assets of the asset hosting system according to the received first obsolete asset operation result information, obtaining second obsolete asset operation result information, and judging whether the second obsolete asset operation result information is consistent with the first obsolete asset operation result information sent by the asset hosting system.
Step S802: and the asset application terminal system inquires the storage service system according to the new managed asset registration index information in the terminal block record information corresponding to the first obsolete asset operation result information, acquires corresponding new managed asset storage information, and then verifies the new managed asset storage information. The verification content is the same as the verification content in step S222, and meanwhile, the managed asset return transfer completion information stored by the verification storage service system is the same as the signed managed asset return transfer information sent by the asset hosting system.
Step S803: and the asset application terminal system displays the frozen asset operation result information, the managed asset return transfer completion information and the obsolete asset operation result information to a user.
Step S804: and the user inquires the transfer completion condition of the return of the managed asset from the asset right registration system and verifies the consistency of the transfer completion information of the return of the managed asset displayed by the asset application terminal system.
In a preferred embodiment, the user may re-execute step S303 to query the remaining asset information on the chain and verify consistency with the frozen asset operation result information and the obsolete asset operation result information.
Example eight: the principle of implementing the uplink asset downlinking by the system for uplink asset downlinking according to the embodiment of the present invention will be described with reference to stocks issued by a certain company as an example.
Suppose a company issues blockchain stock a with 1000 shares and blockchain stock B with 800 shares, the stock a is split into two 500 shares during uplink and the stock B is split into 300, 300 and 200 shares, and 800 of them needs to be returned to the company. Since the blockchain stock a and the blockchain stock B are issued by the same company, the blockchain stock a and the blockchain stock B belong to the same asset class and belong to divisible digital assets, and thus, the on-chain asset downlinking can be performed in the manner of the embodiment.
Since the quantity of the lower-link assets is smaller than the quantity of the assets recorded by the asset ledger system, the initial block to be subjected to the lower link can be selected from the initial block information corresponding to the hosting asset class and the on-link asset information corresponding to the asset ledger address which is queried by the asset ledger system according to step S205, and the hosting assets corresponding to the hosting registration index information to be subjected to the lower link and corresponding to the initial block to be subjected to the lower link are returned and transferred to the user. Namely, 500 shares of stock A and 300 shares of stock B need to be returned to the user as managed assets to be linked down.
FIG. 9 is a schematic flow chart of a method for uplink asset downlink in an embodiment of the present invention. As shown in fig. 9, the method for chaining assets up and down in the embodiment of the present invention mainly includes the following steps:
step S901: the asset application terminal system generates downlink request information based on the managed asset type and the downlink asset quantity selected or input by the user, and sends the downlink request information with the signature of the asset application terminal system to the asset management system. A user accesses an asset application terminal system installed on a terminal device (such as a mobile phone, a tablet, etc.), selects a downlink operation entry corresponding to a certain asset class in the asset application terminal system, and selects or inputs the quantity of assets to be downlinked (referred to as the quantity of downlink assets in this embodiment) in an interface corresponding to the downlink operation entry. The asset application terminal system acquires a real-name book record corresponding to a user so as to acquire on-chain asset information corresponding to an asset book address of the real-name book record according to the real-name book record; then, according to the asset information on the chain, the initial block information is traced back step by step, and a group of initial block information is selected from the initial block information, so that the sum of the effective asset unit number contained in the selected initial block information is less than or equal to the sum of the asset number corresponding to the asset book address; taking the sum of the effective asset unit quantities contained in the selected initial block information as the quantity of the downlink assets, taking the initial block number corresponding to the selected initial block information as the initial block number of the to-be-downlink assets, and taking the on-chain asset hosting registration index information corresponding to the selected initial block information as the to-be-downlink asset hosting registration index information; and generating downlink request information based on the quantity of the downlink assets, the hosting registration index information to be downlink and the initial block number of the downlink.
Step S902: and the asset hosting system verifies the downlink request information with the asset application terminal system signature, and sends the downlink request information with the asset hosting system signature to an asset hosting party after the verification is passed. The verification process of the asset hosting system for verifying the downlink request information with the signature of the asset application terminal system comprises the following steps: the asset hosting system acquires the on-chain asset information corresponding to the asset ledger address and the initial block information corresponding to the hosted asset type of the on-chain asset information from the asset ledger system according to the asset ledger address corresponding to the user; then, the user public key in the identity certificate of the downlink request information is used for verifying the asset ledger address corresponding to the downlink request information, after the verification is successful, whether the asset ledger address corresponding to the to-be-downlink escrow registration index information is the same as the asset ledger address of the real-name ledger record is judged, and if the asset ledger address is different, the verification fails; if the quantity of the assets on the lower link is the same as the quantity of the assets on the lower link, judging whether the quantity of the assets on the lower link of the asset information on the lower link is less than or equal to the quantity of the assets of the asset information on all the links corresponding to the asset book address, and if not, the verification fails; if yes, judging whether the managed asset type of the managed asset issuing request of the initial block number to be linked down is the same as the managed asset type of the linked asset information, wherein the linked asset number of the linked asset information is equal to the sum of the effective asset unit number in the managed asset issuing information contained in the initial block number to be linked down, and if yes, successfully verifying; otherwise, the verification fails.
Step S903: and the asset hosting party verifies the downlink request information with the asset hosting system signature, and returns the hosted assets with the same quantity as the downlink assets to the user after the verification is passed, so that the uplink asset downlink is realized. The verification process of the asset hosting party for verifying the downlink request information with the asset hosting system signature comprises the following steps: the asset hosting party verifies the signature of the asset application terminal system and the signature of the asset hosting system in the downlink request information, judges whether the identity certificate in the real-name account book record corresponding to the downlink request information is consistent with the identity certificate corresponding to the signature or not after the verification is passed, and if the identity certificate is consistent with the identity certificate corresponding to the signature, the verification is passed; otherwise, the verification is not passed. After the verification is passed, the asset hosting party initiates an operation of transferring the transaction right to the user corresponding to the return user information in the downlink request information to the asset right registration system, namely, the asset hosting party transfers the managed assets with the same quantity as the downlink assets in the downlink request information to the corresponding user through the asset right registration system, and thus, the uplink asset downlink is completed.
According to the technical scheme of the embodiment of the invention, a user initiates the downlink request information through the asset application terminal system, the asset hosting system signs and sends the signature to the asset hosting party after verifying that the downlink request information passes, and the asset hosting party returns the hosted assets with the same quantity as the downlink assets of the downlink request information to the user after verifying that the downlink request information passes, so that the downlink return of the uplink assets is realized.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A system for chaining assets and downlinking comprising: the system comprises an asset application terminal system, an asset management system and an asset management party; wherein, the first and the second end of the pipe are connected with each other,
the asset application terminal system is used for generating downlink request information based on managed asset types and downlink asset quantity selected or input by a user and sending the downlink request information with the signature of the asset application terminal system to the asset management system;
the asset hosting system is used for verifying the downlink request information with the asset application terminal system signature, and after the verification is passed, the downlink request information with the asset hosting system signature is sent to the asset hosting party;
the asset hosting party is used for verifying the downlink request information with the asset hosting system signature, and after the verification is passed, the hosted assets with the same quantity as the downlink assets are returned and transferred to the user, so that uplink asset downlink is realized;
the downlink request information includes: returning user information and downlink asset information, wherein the returning user information comprises: the real-name account book record of the user, the down-link asset information includes: the managed asset type, the quantity of the down-link assets, the managed registration index information to be down-link and the initial block number to be down-link;
the asset hosting system verifies the downlink request information with the signature of the asset application terminal system, and the verification comprises the following steps:
the asset hosting system acquires on-chain asset information corresponding to the asset ledger address and initial block information corresponding to the hosted asset type of the on-chain asset information from the asset ledger system according to the asset ledger address corresponding to the user;
verifying the asset ledger address of the real-name ledger record in the returned user information by using a user public key in the identity certificate of the downlink request information, judging whether the asset ledger address corresponding to the to-be-downlink escrow registration index information is the same as the asset ledger address of the real-name ledger record after the verification is successful, and if the asset ledger address is different from the asset ledger address of the real-name ledger record, failing the verification;
if the quantity of the assets on the lower link is the same as the quantity of the assets on the lower link, judging whether the quantity of the assets on the lower link of the asset information is less than or equal to the quantity of the assets of the asset information on all the links corresponding to the asset book address, and if not, the verification fails;
if yes, judging whether the managed asset type of the managed asset issuing request of the initial block number to be linked down is the same as the managed asset type of the linked asset information, wherein the linked asset number of the linked asset information is equal to the sum of the effective asset unit numbers in the managed asset issuing information contained in the initial block number to be linked down, and if yes, successfully verifying; otherwise, the verification fails.
2. The system of claim 1, wherein the asset application terminal system is further configured to:
acquiring a real-name account book record corresponding to the user, and acquiring on-chain asset information corresponding to an asset account book address of the real-name account book record according to the real-name account book record; wherein the on-chain asset information comprises the asset quantity corresponding to the asset ledger address and on-chain asset hosting registration index information;
taking the on-chain asset information as current post-transaction asset information, and acquiring the pre-transaction asset information of the current post-transaction asset information generated before transaction by the current post-transaction asset information;
taking the preorder asset information as the current post-transaction asset information, tracing back to initial block information step by step, and selecting a group of initial block information in the initial block information, so that the sum of the effective asset unit quantities contained in the selected initial block information is less than or equal to the sum of the asset quantities corresponding to the asset book address; wherein the initial block information includes hosted asset registration index information and asset issuing unit number;
taking the sum of the effective asset unit quantities contained in the selected initial block information as the quantity of the downlink assets, taking the initial block number corresponding to the selected initial block information as the initial block number to be downlinked, and taking the on-chain asset hosting registration index information corresponding to the selected initial block information as the hosting registration index information to be downlinked; wherein the effective asset unit quantity is the difference between the asset issuing unit quantity and the terminated asset unit quantity;
and generating the downlink request information based on the quantity of the downlink assets, the hosting registration index information to be downlink and the initial block number of the downlink.
3. The system of claim 2, wherein the asset application terminal system is further configured to: selecting a group of initial block information from the initial block information corresponding to the asset hosting registration index information on the chain in the following way, so that the sum of the effective asset unit number contained in the selected initial block information is the same as the quantity of the assets on the chain:
and sequencing the effective asset unit quantities of all the initial block information corresponding to the asset hosting registration index information on the chain, recursively selecting the effective asset unit quantity with the sum value as the quantity of the assets on the chain according to the sequencing result, and taking the initial block information corresponding to the selected effective asset unit quantity as the selected initial block information.
4. The system of claim 1, wherein the asset application terminal system is further configured to:
generating on-chain asset query request information based on query requirements selected and/or input by the user in an on-chain asset query function interface and an asset book address corresponding to the user;
acquiring on-chain asset information corresponding to an asset ledger address of the on-chain asset query request information and initial block information corresponding to a managed asset class of the on-chain asset information from an asset ledger system; and
and comparing the on-chain asset information belonging to the same managed asset type with the effective asset unit number corresponding to the initial block information, determining the on-chain asset to be off-chain according to the comparison result, and displaying the on-chain asset to the user.
5. The system of claim 2, wherein the asset hosting system is further configured to: acquiring a managed asset registration index identifier in corresponding initial block information according to the initial block number to be linked down of the linked asset information; according to the managed asset registration index identification, acquiring managed asset storage information corresponding to the initial block number to be linked down from a storage service system, and then sending the managed asset storage information to the asset management side;
the asset hosting party is further configured to: checking and verifying the managed asset storage information, and if the managed asset storage information passes the verification, sending the downlink request information with the asset hosting party signature to the asset hosting system; and if the verification is not passed, returning a notice of the failure of the downlink operation to the asset hosting system.
6. The system of claim 5, wherein the asset hosting system is further configured to: after the signature of the downlink request information is verified, transmitting the downlink request information with the three-party signature and a downlink asset freezing operation instruction with the signature of the asset hosting system to the asset application terminal system; the three-party signature-containing downlink request information is the downlink request information with the three-party signature of the asset application terminal system, the asset hosting system and the asset hosting party;
the asset application terminal system is further configured to: after the signature of the downlink request information is verified, a downlink asset freezing operation instruction with the asset hosting system signature is sent to the asset ledger system;
the asset ledger system is further for: and verifying the downlink asset freezing operation instruction and the downlink request information, and freezing the assets to be frozen according to the freezing instruction information of the downlink asset freezing operation instruction after the verification is passed.
7. The system of claim 6, wherein the asset application terminal system is further configured to: acquiring frozen asset operation result information from the asset account book system, and then sending the frozen asset operation result information with the asset application terminal system signature to the asset hosting system;
the asset hosting system is further to: and verifying the frozen asset operation result information with the asset application terminal system signature before sending the downlink request information with the asset hosting system signature to an asset hosting party.
8. The system of claim 1, wherein the asset escrow party is further configured to: after the managed assets with the same quantity as the downlink assets are returned and transferred to the user, sending returned and transferred information of the managed assets with the asset escrow signature to the asset escrow system;
the asset hosting system is further to: verifying the signature of the managed asset return transfer completion information, after the signature passes the verification, adding the signature of the asset managed system into the managed asset return transfer completion information, and uploading the new managed asset storage information to a storage service system; wherein the new hosted asset retention information includes: the original managed asset saving information, the downlink request information with the three-party signature and the managed asset returning transfer information with the double signatures of the asset hosting party and the asset hosting system.
9. The system of claim 6, wherein the asset hosting system is further configured to: submitting a downlink asset voiding operation instruction with the asset hosting system signature to the asset ledger system;
the asset ledger system is further for: and verifying the operation instruction for the invalidation of the downgoing assets, and after the verification is passed, invalidating the assets to be invalidated according to the operation instruction for the invalidation of the downgoing assets.
10. The system of claim 6, wherein the asset hosting system is further configured to:
acquiring first waste asset operation result information from the asset ledger system according to the ledger address of waste assets and the asset category of the downlink asset waste operation instruction, and then returning corresponding terminal block record information according to the terminal block number of terminal block information in the first waste asset operation result information; and
and verifying the first obsolete asset operation result information, and after the first obsolete asset operation result information passes the verification, sending the first obsolete asset operation result information with the asset hosting system signature and the hosted asset return transfer completion information with the asset hosting system signature to the asset application terminal system.
11. A method for on-chain asset downlinking applicable to the system of any of claims 1 to 10, comprising the steps of:
the asset application terminal system generates downlink request information based on the managed asset type and the downlink asset quantity selected or input by a user, and sends the downlink request information with the signature of the asset application terminal system to the asset management system;
the asset hosting system verifies the downlink request information with the asset application terminal system signature, and after the verification is passed, the downlink request information with the asset hosting system signature is sent to an asset hosting party;
and the asset hosting party verifies the downlink request information with the asset hosting system signature, and returns the hosted assets with the same quantity as the downlink assets to the user after the verification is passed, so that the uplink asset downlink is realized.
CN201811563269.5A 2018-12-20 2018-12-20 System and method for on-chain asset-based downlink Active CN109670830B (en)

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