CN111667366A - Scientific and technological service transaction system and transaction method based on alliance block chain - Google Patents
Scientific and technological service transaction system and transaction method based on alliance block chain Download PDFInfo
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Abstract
The invention relates to a alliance-based block chain scientific and technological service transaction system.A alliance updating module of a scientific and technological service mechanism utilizes a block chain sub-chain creation mechanism to issue an intelligent contract for entering a chain, when other scientific and technological service mechanisms initiate an intelligent contract for entering the chain, the scientific and technological service mechanism sends a qualification certificate to the intelligent contract for the block chain, and the intelligent contract for the block chain checks the authority on the qualification certificate to determine whether to approve the scientific and technological service mechanism to join the block chain sub-chain; the scientific and technological service transaction module based on the blockchain system receives a demand service request sent by a scientific and technological service demand party by using the blockchain system and sends the demand service request of the scientific and technological service demand party to a corresponding scientific and technological service provider; the invention can greatly reduce the storage burden of the block chain and reduce the transmission pressure of the block chain network.
Description
Technical Field
The invention relates to the technical field of scientific and technological service transaction, in particular to a scientific and technological service transaction system and a scientific and technological service transaction method based on an alliance block chain.
Technical Field
The science and technology service industry is a new industry classification formed under the trend that the industry is continuously refined and divided and the industry is continuously fused and grown at present. The scientific and technological service industry is an industry for providing services to the society and is an important component of the modern service industry, the service means is technology and knowledge, and the service objects are all industries in the society. The technical service transaction also has different characteristics from the common commodity transaction, that is, a single technical service provider is difficult to meet the technical service requirements of users, and the transaction fund is difficult to guarantee. On the other hand, the secondary explosion of the block chain also provides a new optimization direction for scientific and technological service transaction; and the weak centralization of the alliance chain can be used for limiting information sharing and guaranteeing the information security of the mechanism chain.
In the existing research on science and technology services, the research directions are many, but the research on the science and technology services transaction is limited, and the research on the connection between the science and technology services transaction and the block chain is less. The current block chain is exploded again, and becomes a hot spot of many pursuits of research. The system is a distributed shared account book and a database, and has the characteristics of decentralization, no tampering, openness and transparency and the like. The characteristics ensure the honesty and the transparency of the block chain and lay a foundation for creating trust for the block chain. The characteristics of the block chain are fully utilized, and the scientific and technical service transaction is expected to be new. In the research of the application of the existing block chain in the transaction, although there is no case of combining the block chain and the scientific and technical service transaction, some patents are worth referencing. In the patent "blockchain transaction information processing method and blockchain node", the relevant transaction information is divided into a plurality of segments, and each segment is sent to at least one target adjacent node of the blockchain node, so that the transmission pressure of a blockchain network is reduced, and the storage space of a single node can be reduced. The disadvantage is that storing each of multiple slices of the same transaction information on multiple blockchain nodes may increase the overall blockchain load.
Disclosure of Invention
The invention aims to provide a scientific and technological service transaction system and a transaction method based on an alliance block chain, which can greatly reduce the storage burden of the block chain and reduce the transmission pressure of a block chain network.
To achieve the object, the present invention provides a system for scientific and technological service transaction based on alliance blockchain, which is characterized in that: the system comprises a scientific and technological service institution alliance updating module and a scientific and technological service transaction module based on a blockchain system, wherein the scientific and technological service institution alliance updating module is used for issuing an intelligent entering-chain contract by utilizing a blockchain sub-chain establishing institution, when other scientific and technological service institutions initiate an entering-chain application to the intelligent entering-chain contract, the scientific and technological service institutions send qualification certificates to the blockchain intelligent contract, and the blockchain intelligent meeting contract checks the authority on the qualification certificates to determine whether to agree to the scientific and technological service institutions to join the blockchain sub-chain; the scientific and technological service transaction module based on the blockchain system is used for receiving a demand service request sent by a scientific and technological service demand party by using the blockchain system and sending the demand service request of the scientific and technological service demand party to a corresponding scientific and technological service provider; the technical service organization alliance refers to an alliance formed by combining one or more organizations, and the alliance is a part of a block chain in a sub-chain form. In the patent design, scientific and technical service transaction information is stored in a main chain of the block chain and can be accessed by each sub-chain node, while the information in the sub-chains and other sub-chain nodes cannot be accessed, and the information is partially concentrated and partially shared, which is the embodiment of weak centralization;
the scientific and technological service transaction module based on the blockchain system is used for creating a supervision account according to the request of a supervisor, so that a scientific and technological service demander transfers payment funds to the supervision account, the supervision account informs a scientific and technological service provider of balance information of the supervision account, and the scientific and technological service provider provides corresponding scientific and technological services;
the technical service trading module based on the blockchain system is used for creating a transfer contract according to a request of a technical service provider and inviting trading participants to participate in the transfer contract, wherein the trading participants comprise the technical service provider, a technical service demander and a supervisor, and the transfer contract is stored in a blockchain main chain.
The scientific and technological service transaction module based on the block chain system is used for collecting the signature of the transaction participant on the transfer contract after the scientific and technological service demand side confirms the completion of the service.
The scientific and technological service transaction module based on the blockchain system is used for transferring payment funds of a scientific and technological service demand party from a supervision account to a scientific and technological service provider account after the consolidated transaction participants sign the transfer contracts.
The block chain system-based scientific and technological service transaction module is used for returning payment funds of the scientific and technological service demand party to an account of the scientific and technological service demand party from a supervision account under the condition that the scientific and technological service demand party closes service transactions independently.
The invention has the beneficial effects that:
the invention can fully utilize the alliance block chain, realize the storage of data and information and the reserved sharing to the block chain platform in the scientific and technological service transaction process, and the weak centralization characteristic enables part of the data and the information to flow into the main chain, and the mechanism information in the sub chain can not be accessed by other sub chains, thereby greatly reducing the storage burden of the main block chain and reducing the data information transmission pressure of the block chain network. Different organizations in the alliance can provide services aiming at different aspects of scientific and technological services, form a set of complete and comprehensive scientific and technological service solution, and can meet the requirements of the scientific and technological service requirements of users. The monitoring party monitors the fund flow and ensures the fund safety.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a flow chart of the present invention;
FIG. 3 is a schematic diagram of a federation of scientific and technological service organizations in accordance with the present invention.
Wherein, 1-science and technology service alliance update module, 2-science and technology service transaction module based on block chain system.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the invention relates to a scientific and technological service transaction system based on a block chain of alliances, as shown in figures 1-3, which comprises a scientific and technological service institution alliance updating module 1 and a scientific and technological service transaction module 2 based on a block chain system, wherein the scientific and technological service institution alliance updating module 1 is used for establishing institutions to issue an intelligent contract of a block chain, when other scientific and technological service institutions initiate a chain entering application to the intelligent contract of the block chain, the scientific and technological service institutions send qualification certificates to the intelligent contract of the block chain, and the intelligent contract of the block chain checks the authority on the qualification certificates to determine whether to agree to the scientific and technological service institutions to add the block chain sub-chain; the scientific and technological service transaction module 2 based on the blockchain system is used for receiving a demand service request sent by a scientific and technological service demand party by using the blockchain system and sending the demand service request of the scientific and technological service demand party to a corresponding scientific and technological service provider;
the scientific and technological service transaction module 2 based on the blockchain system is used for creating a supervision account according to the request of a supervisor, so that a scientific and technological service demander transfers payment funds to the supervision account, the supervision account informs a scientific and technological service provider of balance information of the supervision account, and the scientific and technological service provider provides corresponding scientific and technological services;
the scientific and technological service transaction module 2 based on the blockchain system is used for creating a transfer contract according to a request of a scientific and technological service provider and inviting transaction participants to participate in the transfer contract, wherein the transaction participants comprise the scientific and technological service provider, a scientific and technological service demander and a supervisor, and the transfer contract is stored in a blockchain main chain.
In the above technical solution, the scientific and technological service transaction module 2 based on the blockchain system is configured to collect a signature of an accounting contract from a transaction participant after the scientific and technological service demander confirms that the service is completed.
The scientific and technological service transaction module 2 based on the blockchain system is used for transferring payment funds of a scientific and technological service demand party from a supervision account to a scientific and technological service provider account after the collective transaction participants sign the transfer contracts.
The scientific and technological service transaction module 2 based on the blockchain system is used for returning the payment fund of the scientific and technological service demand party from the supervision account to the account of the scientific and technological service demand party under the condition that the scientific and technological service demand party closes the service transaction independently.
In the above technical solution, the scientific and technological service organization is a social group, an enterprise, or an individual that provides scientific and technological services for the masses.
And the scientific and technical service is an activity type providing mutual convenience through social organizations or members. The theory is used for linking the nature facts with the phenomena, so that the scientific achievements can be applied to the solving process of practical problems conveniently. The method comprises eight kinds of scientific and technological service field information, wherein the eight kinds of scientific and technological services (fields) are respectively research, development and design, technology transfer, entrepreneurship incubation, scientific and technological finance, intellectual property, inspection, detection and authentication, scientific and technological consultation and scientific and technological popularization.
In the technical scheme, each scientific and technological service organization has an account block chain belonging to the scientific and technological service organization, data stored in the chain cannot be directly read by nodes of other chains, and only when transactions are generated among the scientific and technological service organizations, the transaction data are shared to a block chain system for transaction and storage;
the technical service alliance firstly determines that the technical service is different from the common commodity transaction according to the characteristics of the technical service, namely dispersion and heterogeneous, and a single technical service provider is difficult to meet the technical service requirements of users. Therefore, a technical service organization alliance (sub-chain) is designed by utilizing an alliance chain, under the structure, each organization can own an account block chain belonging to the organization, data stored in the chain of the organization cannot be directly read by nodes of other chains, the organizations share transaction data to a block chain system for transaction and storage only when transactions are generated among the organizations, and a set of complete technical service solution is provided in the sub-chain. Since it is the set that there must be an organization exit and a new organization join, it relates to the technology service alliance update.
In the above technical solution, a schematic diagram of a science and technology service organization union is shown in fig. 3, and a block chain main chain stores all the science and technology service transaction information and can be accessed by other sub-chain nodes. The block chain sub-chain represents a scientific and technological service organization alliance, different organizations and different alliance modes exist, user information of a scientific and technological service provider can be shared only in the sub-chain, and through the mechanism, the user data and transaction data are subjected to shunting processing by the double-chain structure, so that data redundancy of the recording nodes can be reduced to a certain extent, and the consensus speed of the system is improved. Under the structure, each scientific and technological service mechanism can own an account block chain belonging to the scientific and technological service mechanism, data stored in the sub chain belonging to the scientific and technological service mechanism cannot be directly read by nodes of other sub chains, the scientific and technological service mechanisms share transaction data to a main chain for transaction and storage only when transactions are generated among the scientific and technological service mechanisms, and the mechanism means that after the transactions are completed, data of a bottom-layer client can only be seen by related mechanisms and supervision mechanisms of the sub chains. The privacy of the data is guaranteed. And the information is selectively shared, so that the load of a block chain system can be reduced.
A block chain scientific and technological service transaction method of the system comprises the following steps:
step 1: the science and technology services agency alliance update module 1 issues an intelligent contract for entry chain by using a block chain sub-chain creation agency, so-called intelligent contract, which is a computer protocol aiming at spreading, verifying or executing contracts in an information-based manner, and is a set of commitments defined in a digital form, including a protocol on which a contract participant can execute the commitments. An inbound intelligent contract is a contract issued by a child chain creation entity that includes its constraints on the application inbound entity. The constraints in turn comprise: time efficiency, safety, credibility, price, quality and whether the information is willing to accept sharing;
step 2: when other scientific and technological service organizations initiate an incoming chain application to the incoming chain intelligent contract, the scientific and technological service organizations send qualification certificates to the blockchain intelligent contract, the blockchain intelligent contract checks the authority on the qualification certificates to determine whether to approve the scientific and technological service organizations to join the blockchain sub-chain, the qualification certificates applied to the incoming chain organizations contain information of services provided by the organizations, and the organization service information contains but is not limited to: time efficiency, safety, credibility, price and quality;
and step 3: if the block chain intelligent contract passes the authority authentication on the qualification certificate, responding to the entering chain application, and if the block chain intelligent contract does not pass the authority authentication on the qualification certificate, refusing the entering chain application;
and 4, step 4: the scientific and technological service transaction module 2 based on the blockchain system receives a demand service request sent by a scientific and technological service demander by using the blockchain system and sends the demand service request of the scientific and technological service demander to a corresponding scientific and technological service provider; in addition, the method also comprises the following steps: the scientific and technological service transaction module 2 based on the blockchain system receives scientific and technological service information sent by a scientific and technological service provider (alliance mechanism subchain), wherein the scientific and technological service information comprises: scientific and technological service range (including which scientific and technological service or services), scientific and technological service attributes (timeliness, safety, credibility, price and quality), and historical user evaluation on the scientific and technological service;
the scientific and technological service trading module 2 based on the block chain system receives demand service information sent by a scientific and technological service demand party, calls an integrity management contract, and returns evaluation information of at least one of the scientific and technological service demand party and scientific and technological service requesting inquiry to the scientific and technological service demand party so as to be convenient for the scientific and technological service demand party to refer;
and 5: the scientific and technological service transaction module 2 based on the blockchain system creates a supervision account according to the request of the supervision party, so that the scientific and technological service demand party transfers payment funds to the supervision account, the supervision account informs a scientific and technological service provider of balance information of the supervision account, and the scientific and technological service provider provides corresponding scientific and technological services;
step 6: the technical service transaction module 2 based on the blockchain system establishes a transfer contract according to a request of a technical service provider and invites transaction participants to participate in the transfer contract, wherein the transaction participants comprise the technical service provider, a technical service demander and a supervisor, and the transfer contract is stored in a blockchain main chain;
the system comprises a block chain system, a scientific and technological service provider and a scientific and technological service demander, wherein the scientific and technological service provider is configured to request the block chain system to create a transfer contract, provide service for the scientific and technological service demander after receiving balance information of a supervision account, and sign the transfer contract after the scientific and technological service demander confirms that the service is completed; science and technology service demander: configured to send a demand service request to the blockchain system, and transfer payment funds to the administrative account, signing the transfer contract after confirming completion of the service; the monitoring party: the system is configured to request to create a supervision account and invite a service transaction participant to participate in a transfer contract from a blockchain system, notify a scientific and technological service provider of balance information of the supervision account, and sign the transfer contract when a scientific and technological service demander confirms that service is completed;
the transfer contract is created by a contract management contract and triggers and executes transfer operation, wherein after the contract management contract monitors a transfer contract collective signature, the transfer contract is triggered to execute the transfer operation, and the transfer contract transfers payment funds of a science and technology service demand party to a science and technology service provider account from a supervision account;
and 7: after the scientific and technological service demand side confirms that the service is finished, a scientific and technological service transaction module 2 based on the block chain system collects the signature of a transaction participant on an account transfer contract;
and 8: after the scientific and technological service transaction module 2 based on the blockchain system collects signatures of transaction participants on transfer contracts, transferring payment funds of scientific and technological service demanders from a supervision account to a scientific and technological service provider account;
and step 9: the scientific and technological service transaction module 2 based on the blockchain system is used for returning the payment fund of the scientific and technological service demand party from the supervision account to the account of the scientific and technological service demand party under the condition that the scientific and technological service demand party closes the service transaction independently.
The blockchain system records scientific and technological service information provided by a scientific and technological service provider, wherein the scientific and technological service information comprises: scientific and technological service range (including which scientific and technological service or services), scientific and technological service attributes (timeliness, safety, credibility, price and quality), and historical user evaluation of the scientific and technological service.
The block chain system records service information provided by the scientific and technological service provider for the scientific and technological service demander, and calls a scientific and technological service tracking contract to track the completion condition of the scientific and technological service.
The block chain system records that the scientific and technological service demand party confirms the completion of the service and calls an integrity management contract for mutual evaluation of the service transaction parties.
The block chain system provides a tracing service according to the recorded at least one piece of information.
The block chain system provides the scientific and technological service information to the supervisor, so that the supervisor can arbitrate the commodities which are proposed by the scientific and technological service demander and disagree.
The technical solution of the present invention is described below with reference to the field of scientific and technological service transactions, the field of blockchains, and the application of the examples of both parties of scientific and technological service transactions based on the alliance blockchain scientific and technological service transaction system as an embodiment.
Mainly comprises two parts.
Suppose 1, a business process of a science and technology service is "xxx type product development and design". The design process includes, but is not limited to: market research and development, scientific and technological consultation, product design, LOGO design, test service and market operation investigation. The design initializer creates a blockchain block, and issues what scientific and technical service requirements and requirement details are needed in the blockchain as follows:
i.e., the child chain creation authority issues an in-chain intelligence contract that contains service constraints for the desired technological service provider.
When a technology service provider interested in a technology service of a certain link, such as LOGO design, wants to initiate an incoming application for the intelligent contract, the organization sends a qualification certificate to the intelligent contract, and the intelligent contract checks the authority on the qualification certificate to determine whether to approve the organization for joining. If the qualification certificate passes, responding to the entering chain application, and notifying other blocks to update information; if the qualification certificate is not passed, the entering chain application is refused, and other blocks are informed to update the information.
Therefore, a complete set of services with high quality guaranteed can be provided in the federation block chain according to the scientific and technological service requirement of 'xxx type product research and design'. Moreover, the characteristics of the block chain of the alliance can effectively enable each provider in the block chain of the alliance to carry out information communication, information is shared in the block chain, and other chains cannot interfere or steal the information without permission.
Assume that 2, after a user sends a "xxx type product" request to the blockchain, the blockchain system receives a request service request sent by a science and technology service demander, and notifies the corresponding science and technology service provider of the request service request of the science and technology service demander, that is, the "xxx type product research and development design" of the block of the coalition chain. The block chain system creates a supervision account according to the request of the supervision party, so that the scientific and technological service demand party transfers payment funds to the supervision account, the supervision account informs the supervision account balance information to an alliance chain formed by the scientific and technological service providers, and the alliance chain of the scientific and technological service providers provides scientific and technological services according to the demand details. The blockchain system creates a transfer contract according to the request of the scientific and technological service provider and invites transaction participants to participate in the transfer contract, wherein the transaction participants comprise the scientific and technological service provider, the scientific and technological service demander and a supervisor. After the scientific and technological service demand side confirms that the service is completed, the block chain system collects the signature of the transaction participant on the transfer contract. And after the block chain system collects the signatures of the transaction participants on the transfer contracts, transferring the payment funds of the scientific and technological service demanders from the supervision accounts to the accounts of the scientific and technological service providers. However, in the case that the science and technology service demander closes the service transaction autonomously, that is, the science and technology service demander is not completed. The blockchain system returns payment funds of the scientific service demander to the account of the scientific service demander from the supervision account.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (7)
1. A science and technology service transaction system based on alliance block chain is characterized in that: the system comprises a scientific and technological service institution alliance updating module (1) and a scientific and technological service transaction module (2) based on a blockchain system, wherein the scientific and technological service institution alliance updating module (1) is used for issuing an intelligent entering-chain contract by using a blockchain sub-chain creation institution, when other scientific and technological service institutions initiate an intelligent entering-chain application to the intelligent entering-chain contract, the scientific and technological service institutions send qualification certificates to the blockchain intelligent contract, and the intelligent entering-chain contract checks the authority on the qualification certificates to determine whether to agree to add the scientific and technological service institutions to the blockchain sub-chain; the scientific and technological service transaction module (2) based on the blockchain system is used for receiving a demand service request sent by a scientific and technological service demand party by using the blockchain system and sending the demand service request of the scientific and technological service demand party to a corresponding scientific and technological service provider;
the scientific and technological service transaction module (2) based on the blockchain system is used for creating a supervision account according to the request of a supervisor, so that a scientific and technological service demander transfers payment funds to the supervision account, the supervision account informs a scientific and technological service provider of balance information of the supervision account, and the scientific and technological service provider provides corresponding scientific and technological services;
the block chain system-based scientific and technological service trading module (2) is used for creating a transfer contract according to a request of a scientific and technological service provider and inviting trading participants to participate in the transfer contract, wherein the trading participants comprise the scientific and technological service provider, a scientific and technological service demander and a supervisor, and the transfer contract is stored in a block chain main chain.
2. A federation-based block-chain technology services transaction system as claimed in claim 1, wherein: the scientific and technological service transaction module (2) based on the blockchain system is used for collecting the signature of the transaction participant on the transfer contract after the scientific and technological service demand side confirms that the service is completed.
3. A federation-based block-chain technology services transaction system as claimed in claim 2, wherein: the scientific and technological service transaction module (2) based on the blockchain system is used for transferring payment funds of a scientific and technological service demand party from a supervision account to a scientific and technological service provider account after the signatures of transfer contracts of the collective transaction participants are completed.
4. A federation-based block-chain technology services transaction system as claimed in claim 3, wherein: the technical service transaction module (2) based on the blockchain system is used for returning payment funds of the technical service demander to an account of the technical service demander from the supervision account under the condition that the technical service demander closes service transactions independently.
5. A federation-based block-chain technology services transaction system as claimed in claim 1, wherein: each scientific and technological service organization has an account block chain belonging to the scientific and technological service organization, data stored in the chain of the scientific and technological service organization cannot be directly read by nodes of other chains, and only when transactions are generated among the scientific and technological service organizations, the transaction data are shared to the block chain system for transaction and storage.
6. A federation-based block-chain technology services transaction system as claimed in claim 1, wherein: the block chain main chain stores all scientific and technological service transaction information, the block chain sub-chain represents a scientific and technological service institution alliance, different institutions and different alliance modes, by means of the mechanism, user data and transaction data are subjected to shunting processing through the double-chain structure, under the structure, each scientific and technological service institution can own an account block chain belonging to the scientific and technological service institution, data stored in the sub-chain belonging to the scientific and technological service institution cannot be directly read by nodes of other sub-chains, only when transactions are generated among the scientific and technological service institutions, the transaction data are shared on the main chain for transaction and storage, and the mechanism means that after the transactions are completed, data of a bottom client can only be seen by related institutions and supervision institutions of the sub-chain.
7. A method for block chain technology services transaction based on the system of claim 1, comprising the steps of:
step 1: a scientific and technological service institution alliance updating module (1) utilizes a block chain sub-chain creation institution to issue an intelligent contract of an incoming chain;
step 2: when other scientific and technological service organizations initiate an incoming chain application to the incoming chain intelligent contract, the scientific and technological service organizations send qualification certificates to the blockchain intelligent contract, and the blockchain intelligent contract checks the authority on the qualification certificates to determine whether to agree to the scientific and technological service organizations to add the blockchain sub-chain;
and step 3: if the block chain intelligent contract passes the authority authentication on the qualification certificate, responding to the entering chain application, and if the block chain intelligent contract does not pass the authority authentication on the qualification certificate, refusing the entering chain application;
and 4, step 4: the technical service transaction module (2) based on the blockchain system receives a demand service request sent by a technical service demand party by using the blockchain system and sends the demand service request of the technical service demand party to a corresponding technical service provider;
and 5: the scientific and technological service transaction module (2) based on the blockchain system creates a supervision account according to the request of a supervisor, so that a scientific and technological service demander transfers payment funds to the supervision account, the supervision account informs a scientific and technological service provider of balance information of the supervision account, and the scientific and technological service provider provides corresponding scientific and technological services;
step 6: the technical service trading module (2) based on the blockchain system creates a transfer contract according to a request of a technical service provider and invites trading participants to participate in the transfer contract, wherein the trading participants comprise the technical service provider, a technical service demander and a supervisor, and the transfer contract is stored in a blockchain main chain;
and 7: after a scientific and technological service demand side confirms that the service is finished, a scientific and technological service transaction module (2) based on a block chain system collects signatures of transaction participants on the transfer contracts;
and 8: after the scientific and technological service transaction module (2) based on the blockchain system collects signatures of transaction participants on transfer contracts, transferring payment funds of scientific and technological service demanders from a supervision account to a scientific and technological service provider account;
and step 9: the technical service transaction module (2) based on the blockchain system is used for returning payment funds of the technical service demander to an account of the technical service demander from the supervision account under the condition that the technical service demander closes service transactions independently.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112511309A (en) * | 2020-11-19 | 2021-03-16 | 从法信息科技有限公司 | Method and device for directionally sharing supervision-oriented information on block chain and electronic equipment |
| CN113011894A (en) * | 2021-03-29 | 2021-06-22 | 昆明理工大学 | Financial derivative digital transaction system based on trusted computing and intelligent contract |
| CN113177092A (en) * | 2021-05-21 | 2021-07-27 | 中船黄埔文冲船舶有限公司 | Ship manufacturing inspection data sharing method, alliance chain and system |
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| CN113420092A (en) * | 2021-06-30 | 2021-09-21 | 中国银行股份有限公司 | Three-party access method and device based on block chain |
| CN113420092B (en) * | 2021-06-30 | 2024-02-23 | 中国银行股份有限公司 | Three-party access method and device based on block chain |
| CN115310886A (en) * | 2022-10-12 | 2022-11-08 | 广东省科技基础条件平台中心 | Enterprise hatching management system and method based on block chain |
| CN116862508A (en) * | 2023-07-13 | 2023-10-10 | 华中农业大学 | Machine learning model transaction system based on alliance blockchain |
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