CN113065775A - Bidding system based on block chain - Google Patents
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Abstract
The invention provides a bidding system based on a block chain, which comprises: the block chain network comprises a main chain network and at least one alliance chain accessed to the main chain network; the bidding service platform runs in each alliance chain respectively and is used for issuing a bidding document by a bidding party and generating a corresponding hash value to be stored in the block chain network; after obtaining the bidding qualification, each supplier generates bidding materials and stores the bidding materials in the blockchain network; the expert side gives out the subjective score according to the bidding material and stores the subjective score into the block chain network, and obtains the comprehensive score of the supplier according to the bidding material and the grading rule pre-configured in the block chain network and combines the subjective score processing and stores the comprehensive score into the block chain network; and taking the supplier with the highest comprehensive score as a successful bidding party to generate a corresponding successful bidding notice, signing a purchasing contract on line by the successful bidding party and the bidding party, and storing the successful bidding notice and the purchasing contract to the block chain network. The on-line automatic bidding method has the advantages of realizing on-line automatic bidding and effectively guaranteeing the benefits of bidders.
Description
Technical Field
The invention relates to the technical field of block chain application, in particular to a bidding system based on a block chain.
Background
The bidding is a comprehensive economic responsibility system form for promoting competition in the field of basic construction, along with the rapid development of the Internet, the bidding activity is gradually electronized, the electronic bidding enables the communication process to be more convenient, and the efficiency of the whole bidding work is obviously improved on the premise of reducing the cost. The bidding process of the existing electronic bidding platform mainly comprises the following steps: the tenderer needs to register and log in the electronic tendering and bidding platform to input basic information for auditing. And after obtaining the bidding qualification, the tenderer registers the bidding project, can begin to compile bidding documents, can upload the bidding documents after completing the compilation, and releases the bidding information on the bidding platform. The same bidders need to register and log in the bidding platform to submit enterprise information for auditing in the bidding process; after obtaining the bidding qualification, the bidder can search the interested items by checking the bidding announcement in the bidding platform and download the bidding document, and the bidder can generate the bidding document on line and realize on-line one-key remote bidding. After the bid is opened, the bid inviting unit invites the bid evaluation experts to evaluate the bid on the project. The expert can develop bid evaluation work after logging in the platform, the project can be scored according to the grading detailed rules appointed by the bid inviting party in the bid evaluation process, whether the bid inviting party has bad bidding behaviors including false bidding and the like or not in the bidding link is evaluated, after all bid evaluators complete the work of the expert, bid evaluation results can be uniformly submitted to bidding units for accurate calculation according to the grading detailed rules and the bidding information of suppliers, one or more bid winning units are selected from the first few bidding units in the ranking, and finally bid winning announcements are issued.
Although the existing electronic bidding platform can realize electronic bidding, the following problems exist: firstly, the management workload of the supplier is large, and the efficiency is low: since the existing supplier qualification information is directly provided by the supplier, the possibility of counterfeiting the supplier information exists, which may result in the network being marked in a poor supplier. In the bid evaluation process, an evaluation expert needs to verify a series of paper support materials provided by a supplier item by item, each batch of items need to be verified, cross-batch information is difficult to share, verification workload is large, data among different network provinces cannot be shared, and difficulty in manually identifying false bid information is high. Secondly, the bidding process is complex, and consumes time and labor: for each bidding project, a supplier needs to go through a series of processes of purchasing a bidding document, making the bidding document, signing and sealing, on-site bidding, waiting for bid opening and the like, a large amount of manpower and material resources are consumed, and the quality of the bidding document is difficult to guarantee. In the bid document making process, the basic information of the suppliers of different projects needs to be repeatedly filled, so that the time of the suppliers is wasted, and the workload of experts is increased; and each project needs to make an optical/U disk of the bid document. In the delivery process of the bidding documents, a supplier needs to go to a bidding hall in a centralized way before opening the bid, so that the bidding site is easy to be disordered, and a large number of workers are needed to maintain the site order; the staff is faced with a great deal of manual work such as classifying, carrying, splitting the bid documents. If remote bid evaluation is needed, remote carrying work of the bid document optical disc/U disc is involved, which not only consumes manpower, but also can cause damage to the bid document. Thirdly, the evaluation criteria are strong in subjectivity and different in evaluation standard: the existing bid evaluation process mostly depends on experience, knowledge architecture, technical level and the like of evaluation experts, and the problems of large individual difference and strong subjectivity are easy to occur. Moreover, the current bid evaluation result is mainly based on the on-site bid evaluation score of an expert, neglects the assessment of the daily performance of the supplier, such as the past service quality of the supplier, and is not beneficial to forming a good cycle of supplier management for quality inspection. Fourthly, there is a certain hysteresis in the management of the supply chain of materials: after the bidding is completed, the bidder and the bidder are required to sign a contract, during actual operation, after the bidding purchase is completed, the bidder and the bidder usually need to complete the contract signing within 30 days, a certain time difference exists between the issuance of the bid-winning notice book and the contract signing, and a certain hysteresis exists in the management of the material supply chain. Fifthly, in the bidding evaluation link, risk early warning to the suppliers is lacked: past performance behaviors of the suppliers are only considered as one of the grading items in the business scoring link. The lack of evaluation of information such as performance capability, product quality performance, after-sales service performance and the like results in the failure to form purchasing closed-loop management and increased risk of winning bid suppliers.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bidding system based on a block chain, which comprises:
the block chain network comprises a main chain network and at least one alliance chain accessed to the main chain network, wherein a supplier information base is stored in the main chain network, and the supplier information base stores the pre-acquired supplier information of each supplier;
and the bidding service platform is respectively operated in each alliance chain and comprises:
the bidding management module is used for issuing a bidding file by a bidding party, generating a hash value of the bidding file and storing the hash value into the block chain network;
the bid management module is used for submitting a bid application according to the bid document by each supplier, extracting corresponding supplier information from the supplier information base after obtaining a bid qualification, generating bid materials and storing the bid materials to the block chain network;
the bid evaluation management module is used for providing subjective scores for experts according to the bid materials and storing the subjective scores into the block chain network, and obtaining comprehensive scores of the suppliers by combining with the subjective evaluation according to the bid materials and the rating rules pre-configured in the block chain network and storing the comprehensive scores into the block chain network;
and the scaling management module is used for taking the supplier with the highest comprehensive score in the block chain network as a successful bid party, generating corresponding successful bid notice sheets to be respectively sent to the successful bid party and the tenderer, enabling the successful bid party and the bidder to sign a purchase contract on line, and storing the successful bid notice sheets and the purchase contract to the block chain network.
Preferably, each alliance chain further operates a third party data authority for providing third party trusted data of each supplier as the supplier information to be stored in the supplier information base.
Preferably, the third-party data mechanism realizes data uplink by adopting an interface docking mode.
Preferably, the nodes in the backbone network include a consensus node, a billing node, and a light node, wherein,
the consensus node comprises a headquarter node as the tenderer and branch company nodes subordinate to the headquarter node, and is used for performing consensus on the application uplink data and distributing the application uplink data to each accounting node after the consensus is successful;
the accounting node is a purchasing platform node of the tenderer and is used for verifying the application uplink data and storing a verification result and the application uplink data;
the light nodes comprise supplier nodes and expert nodes and are used for correspondingly storing the corresponding supplier information and the subjective scores given by the expert.
Preferably, the pre-configured scoring rules in the blockchain network include a first scoring rule and a second scoring rule;
the bid evaluation management module comprises:
the expert scoring unit is used for giving the subjective score according to the bidding materials by the expert and storing the subjective score to the block chain network;
the objective scoring unit is used for processing the bidding materials and the first scoring rule to obtain objective scores of the suppliers;
and the comprehensive scoring unit is respectively connected with the expert scoring unit and the objective scoring unit and is used for processing the subjective score and the objective score according to the second scoring rule to obtain the comprehensive score of the supplier and storing the comprehensive score to the block chain network.
Preferably, the scoring rules are configured in an intelligent contract of the blockchain network.
Preferably, the bidding service platform further comprises a supplier management module, and the supplier management module comprises:
the registration unit is used for registering the supplier and acquiring registration identity information as the supplier information;
the verification unit is connected with the registration unit and used for verifying the identity of the registered supplier during login according to the supplier information;
the maintenance unit is connected with the registration unit and is used for the supplier to maintain the supplier information;
and the importing unit is used for importing the third-party trusted data as the supplier information and storing the third-party trusted data to the supplier information base.
Preferably, the supplier management module further comprises a risk early warning unit, configured to acquire and store historical performance behavior of the supplier as the supplier information, so as to assess performance risk of the supplier;
and the bidding management module adds the historical performance behavior to the bidding materials and stores the historical performance behavior to the block chain network, so that the scoring rule in the bidding management module comprises the performance risk of the supplier.
Preferably, the bidding service platform further comprises a system management module, which is used for implementing account book management, and/or node management, and/or network management, and/or contract management, and/or authority management, and/or digital certificate management on the blockchain network.
Preferably, the logic architecture of the blockchain network includes an application layer, a service layer and a blockchain bottom layer which are arranged from top to bottom;
the application layer is used for providing an online bidding entrance for the tenderer and the supplier;
the business layer is used for supporting the realization of business functions of the bidding business platform;
and the block chain bottom layer is used for realizing the uplink storage of bidding service data generated in the bidding process.
The technical scheme has the following advantages or beneficial effects:
1) by establishing a block chain-based bidding system, a main sub-chain architecture is adopted by a block chain network, a third-party data mechanism and a bidding service platform are connected to a main chain network in a sub-chain mode, supplier information is maintained on the main chain network, and meanwhile, by combining with third-party credible data provided by the third-party data mechanism, the real enterprise portrait of a supplier can be obtained while the effective management of the supplier information is realized, so that the safety, the efficiency and the fairness of purchasing services are promoted;
2) the supplier can make the bidding materials on line, and can directly call the basic information in the corresponding supplier information in the supplier information base without repeated filling, thereby simplifying the bidding link;
3) the scoring rules are redefined, the system evaluates objective scores according to enterprise qualification information and the like in the bidding materials, and finally obtains the final score of the supplier by combining subjective scores given by the experts, so that the workload of the experts is effectively reduced, and the subjective proportion of the bid evaluation is reduced;
4) after the bid inviting is finished, the bid winning notice is sent out, the purchase contract is automatically signed on line, and the situation that certain hysteresis exists in material supply chain management due to the fact that the time difference between the bid winning notice and the purchase contract is too long is avoided;
5) the past performance behaviors of the suppliers are added into bidding materials to evaluate the performance risk of the suppliers, so that the bid amount of the suppliers with the performance risk is effectively reduced, and the benefit of the tenderer is effectively ensured;
6) the bidding service data (including supplier information, bidding documents, bidding materials, bid-winning notice and purchasing-closing-equal amount) generated in the full life cycle of bidding is uplink-stored, so that the completeness, reliability and transparency of the bidding service data are ensured, reliable sharing and evaluation expansion are fully realized, the benefits of bidders are guaranteed, the working efficiency of bidding is improved, and the on-line bidding work is guaranteed to be public and fair;
7) the alliance chain as the sub-chain has the characteristics of openness and transparency, and is beneficial to solving the problems of asymmetrical information, difficulty in controlling product quality, sharing of supplier transaction data, building of a post-service evaluation system, tendering and bidding human factors and the like caused by multiple main bodies of a supply chain;
8) through whole course data chaining, on one hand, the whole course information of the bidding is disclosed to be transparent without blind spots, on the other hand, the historical bidding information is convenient to backtrack at any time, and meanwhile, according to the whole course data chaining, a manager and a supervision institution can be helped to carry out credit rating operation on the bidding main body, so that the purposes of openness, fairness, justice and honesty in the bidding process are achieved;
9) the alliance chain traceability technology is used in the bidding field, information can be shared with bidders, the bid evaluation process is tracked, authorized personnel can call related records, the bidding field information is transparent, and a bridge among governments, the bidders and the bidders is built. The block chain stores the evaluation records on the block chain network forever, the evaluation records cannot be erased or modified, the evaluation records can be watched at any time, the evaluation records are branded which can not be erased forever, accurate tracking can be implemented, and the supervision of the bidding field process is strengthened. The method can also be used for tracing the source of the bidders, and tracing the source of enterprise information like a supply chain.
Drawings
Fig. 1 is a schematic diagram of a bidding system based on block chains according to a preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In accordance with the above-mentioned problems occurring in the prior art, there is provided a bidding system based on block chains, as shown in fig. 1, including:
the block chain network comprises a main chain network 1 and at least one alliance chain 2 connected to the main chain network 1, wherein a supplier information base 11 is stored in the main chain network 1, and the supplier information base 11 stores the pre-acquired supplier information of each supplier;
the bidding service platform 3 is respectively operated in each alliance chain 2, and the bidding service platform 4 comprises:
the bid inviting management module 31 is used for issuing a bid inviting file by a bid inviting party, generating a hash value of the bid inviting file at the same time and storing the hash value in the block chain network;
the bid management module 32 is used for submitting bid applications according to the bid document by each supplier, extracting corresponding supplier information from the supplier information base after obtaining the bid qualification, generating bid materials and storing the bid materials in the blockchain network;
the bid evaluation management module 33 is used for providing subjective scores for the expert according to the bid materials and storing the subjective scores into the block chain network, and processing the subjective scores according to the bid materials and the scoring rules pre-configured in the block chain network in combination with the subjective scores to obtain the comprehensive scores of the suppliers and storing the comprehensive scores into the block chain network;
and the scaling management module 34 is configured to use a provider with the highest comprehensive score in the block chain network as a bid-winning party, generate corresponding bid-winning notification sheets, send the bid-winning notification sheets to the bid-winning party and the bid-inviting party respectively, sign a purchase contract on line by the bid-winning party and the bid-inviting party, and store the bid-winning notification sheets and the purchase contract in the block chain network.
Specifically, in the present embodiment, the bidding project is taken as an electric power engineering construction project as an example, and the technical solution is further described. In order to solve the problem of complicated data of suppliers and simultaneously consider that a tenderer of an electric power engineering construction project can comprise a headquarter and a plurality of provincial companies, each provincial company has a material purchasing department and a tendering and bidding service mode, in order to establish a block-chained tendering and bidding system nationwide and achieve the goal of sharing data of suppliers nationwide, the block-chain-based tendering and bidding system of the technical scheme generally adopts an architecture model of a main chain and constructs an open main chain network nationwide. Any authorized institution or entity can join the backbone network, the provider information is maintained on the backbone network, and any authorized institution or entity can view the provider information through the backbone network. In consideration of the complexity of the national network due to organization, in order to meet the autonomous independence of the services of each province or each region, the bidding service platform can operate in a self-consistent sub-chain, namely, each province company can combine enterprises such as suppliers, experts and third parties to autonomously construct an own alliance chain sub-chain. The sub-chain is formed by partial nodes related to services in the network, an independent consensus algorithm is provided, and account book data between the sub-chain and the sub-chain are physically isolated, so that interference among different service platforms is avoided.
Furthermore, the design of the main sub-chain architecture can enable the alliance chain to have expandability and flexibility, due to privacy of enterprise requirements, most of the enterprises in the current ground exist in the form of alliance chains or private chains, and when the enterprises are willing to uplink own information in a certain way, the alliance chains can exist in the form of sub-chains, and each provincial company can establish a sub-chain independently and link with the main chain network. Through the chain crossing technology, information interaction between the main chain and the sub chain can be realized, even information interaction between the sub chain and the sub chain can be realized, further supplier information can be shared nationwide, and time cost in a bidding link is reduced.
Further specifically, the bid-bidding purchasing process based on the block chain in the technical scheme is as follows: the tenderer logs in the tender bidding service platform 3, fills in basic information of tender bidding items and uploads tender bidding files through the tender bidding management module 31, and automatically generates hash values of the tender bidding files according to a hash algorithm and stores the hash values on the block chain network while the tender bidding files are released, so that the tender bidding files can be guaranteed to be not tampered. Each supplier as a bidder logs in the bidding service platform 3 to view the bidding document, and can submit a corresponding bidding application through the bidding management module 32, after the bidding application is subjected to bidding pre-review, the bidding management module 32 indicates that the supplier obtains the bidding qualification, and after the bidding qualification is obtained, the bidder can extract corresponding supplier information from the supplier information base to generate bidding materials and store the bidding materials in the block chain network; preferably, a one-touch acquisition button is provided to realize one-touch acquisition of the required supplier information in the supplier information base, wherein the supplier information can be the basic information of the supplier, so that bidders no longer need to repeatedly fill in bids for different batches, thereby greatly reducing the labor cost of the supplier. The bid management module 32 is further provided with a local encryption unit, and before uploading the bid material to the blockchain network for storage, the bidder can also perform local encryption on the sensitive material through the local encryption unit and then uplink storage, and ensure the correctness and integrity of the material through the digital signature of the sensitive material.
And then, in the bid evaluation link, objective score evaluation is carried out through a pre-configured scoring rule in the block chain network, meanwhile, an expert can log in the bid inviting and bidding service platform 3, and subjective scores are given through a bid evaluation management module 33 according to bidding materials. The objective scores can be automatically printed according to the enterprise qualification information, business documents, technical documents and other structured information in the evaluation materials, and can be automatically executed by the system in a public and credible environment based on the data on the chain by compiling the evaluation rule in the intelligent contract of the block chain network, so that the interference of human factors is avoided. And the subjective scores are respectively scored by an expert party and then are subjected to chain storage. And after the subjective scores of all expert parties are collected, the comprehensive subjective and objective scores are scored, the final scores of all the bidders are given according to a predefined scoring rule, and the intelligent contract for winning the bid is automatically triggered. The automation of bid evaluation is realized through an intelligent contract technology, the manual operation is simplified, the scoring standard is standardized, and the bid evaluation working efficiency is greatly improved.
After the final bid-winning party is selected according to the final score, the system can automatically send the bid-winning notice to all relevant parties including but not limited to the bid-winning party and the bid-inviting party by triggering the corresponding intelligent contracts. After receiving the notice of winning a bid, the tenderer and the bidder (supplier) automatically initiate a contract signing process in an online mode, so that the process and the speed of material supply chain management are accelerated. Preferably, the calibration management module 34 stores a pre-generated contract template, and related element data required for the contract, such as enterprise information, price information, and target information of the parties a and b, is automatically filled in the contract template to generate a purchase contract, and is sent to the parties a and b to sign each other. Finally, the winning bid notice and the signed contract are both saved in the blockchain network, and the condition that the winning bid notice and the signed contract cannot be tampered is guaranteed.
In a preferred embodiment of the present invention, a third party data authority 5 is further operated in each federation chain 2 for providing third party trusted data for each supplier as supplier information stored in the supplier information repository.
Specifically, in this embodiment, in order to better improve the data dimension and data quality of the provider representation, the technical solution directly obtains enterprise data from a trusted third-party data organization 5, and adds the enterprise data into the provider information base, where the third-party data organization may be a main body such as a government, a bank, and a credit investigation institution, but the trusted data of the third party has a complicated source and a different willingness to join the network as a node, and as a pure data provider, it is preferable to link the data in a current mainstream interface docking manner to enrich the enterprise data content. For a large amount of unstructured data in the business process, the safe storage and the quick access of the files are realized by combining an object storage or distributed storage technology. Originally, the design of the alliance chain includes a plurality of organizations (entities such as enterprises, government agencies and groups participating in the blockchain network), and a third-party data agency is also one of roles in the alliance chain, so that the data access mode is consistent with that of other nodes. Only the authority needs to be set, the information needing to be collected can be used as a trigger condition through an intelligent contract of a block chain network, when the condition is triggered, the corresponding third-party data mechanism node sends the information, and other times do not participate in the transaction on the chain. According to software and hardware accessed by the third-party data mechanism, network conditions and service requirements, different access modes can be designed for the data source, and the access modes include but are not limited to common node access, non-common node access, preposed access mode access and the like. According to different functions of the third-party data mechanism, authority configuration can be carried out, so that some nodes can download complete block chain data copies, some nodes can only view partial data of blocks, and some nodes are responsible for generating block accounting. With the increasing complexity of the current block chain system, the division of the node work is more clear, and the role of the node is gradually diversified and corresponds to various different authorities and functions.
In the preferred embodiment of the present invention, the third-party data mechanism 4 employs an interface docking manner to implement data uplink.
In a preferred embodiment of the present invention, the nodes in the backbone network 1 include a consensus node, a billing node, and a light node, wherein,
the consensus node comprises a headquarter node as a tenderer and branch company nodes subordinate to the headquarter node and is used for performing consensus on the application uplink data and distributing the application uplink data to each accounting node after the consensus is successful;
the accounting node is a purchasing platform node of the tenderer and is used for verifying the application uplink data and storing a verification result and the application uplink data;
the light nodes comprise supplier nodes and expert nodes and are used for correspondingly storing corresponding supplier information and subjective scores given by the expert.
Specifically, in this embodiment, the nodes in the main-chain network are divided into three roles: the system comprises a consensus node, a bookkeeping node and a light node, wherein the consensus node mainly comprises a national network headquarters node and each province company node, the core consensus node adopts a PBFT (Practical Byzantine Fault Tolerance) consensus mechanism, and after block consensus and data consistency are achieved by the core consensus node, all applied uplink data are distributed to each bookkeeping node through a P2P network; the accounting node is used for verifying the data and storing the block original data and the execution result. In this embodiment, the accounting node is also a complete data node, that is, has a complete data read-write permission on the chain, stores all information on the chain, but does not participate in network consensus; the light nodes are used as non-complete nodes, management of block header information and self identity information is only synchronized, but in a alliance chain scene, a business system platform is often used as a trusteeship instead, so that technical friction is reduced, and bidding efficiency is improved.
In a preferred embodiment of the present invention, the pre-configured scoring rules in the blockchain network include a first scoring rule and a second scoring rule;
the bid evaluation management module 33 includes:
an expert scoring unit 331 for the expert to give subjective scores according to the bid material and store the subjective scores in the blockchain network;
an objective scoring unit 332 for processing the objective scores of the suppliers according to the bidding materials and the first scoring rule;
and the comprehensive scoring unit 333 is respectively connected with the expert scoring unit 331 and the objective scoring unit 332, and is used for processing the subjective score and the objective score according to a second scoring rule to obtain a comprehensive score of the supplier and storing the comprehensive score to the blockchain network.
In a preferred embodiment of the invention, the scoring rules are configured in an intelligent contract for a blockchain network.
In a preferred embodiment of the present invention, the bidding service platform 3 further includes a supplier management module 35, and the supplier management module 35 includes:
a registration unit 351, configured to register a provider and acquire registration identity information as provider information;
an authentication unit 352 connected to the registration unit 351, configured to authenticate the identity of the registered provider when the registered provider is logged in according to the provider information;
the maintenance unit 353 is connected with the registration unit 351 and is used for the supplier to maintain the supplier information;
the importing unit 354 is configured to import the third-party trusted data as the provider information and store the third-party trusted data in the provider information base.
In a preferred embodiment of the present invention, the supplier management module 35 further includes a risk pre-warning unit 355, configured to acquire and store historical performance of the supplier as supplier information, so as to assess the performance risk of the supplier;
and the bidding management module adds the historical performance behavior into the bidding materials and stores the bidding materials into the blockchain network, so that the scoring rule in the bid evaluation management module comprises the performance risk of the supplier.
Specifically, in this embodiment, technologies such as intelligent contracts, decentralization, data tamper prevention, and data chain extension in a block chain based on a federation chain may be used to manage rights, obligations, and commitments of each party with an intelligent contract, and take actions performed without a commitment into contract assessment to assess the performance risk of a provider, so as to guarantee the rights and interests of a winning-bid provider.
In a preferred embodiment of the present invention, the bidding service platform 3 further includes a system management module 36, which is used to implement account book management, and/or node management, and/or network management, and/or contract management, and/or authority management, and/or digital certificate management for the blockchain network.
In a preferred embodiment of the present invention, the logic architecture of the blockchain network includes an application layer, a service layer and a blockchain bottom layer arranged from top to bottom;
the application layer is used for providing an online tendering and bidding entrance for tenderers and suppliers;
the service layer is used for supporting the realization of the service function of the bidding service platform;
and the block chain bottom layer is used for realizing uplink storage of bidding service data generated in the bidding process.
Specifically, in this embodiment, the blockchain network in the technical solution adopts a mainstream layered architecture design, and is composed of an application layer, a service layer, and a blockchain bottom layer, where the application layer is the layer closest to the user and provides an online entry for internet bidding, and the display mode may be a mainstream interaction mode such as a website, a mobile App, an applet, and the like; the business layer comprises a core business logic for bidding, realizes business functions of supplier management, bid evaluation management and the like, and is exposed to the application layer in a Web API mode, so that data collection and use are completed; the distributed account book sharing technology is realized at the bottom layer of the block chain, the distributed account book sharing technology comprises block chain core modules such as a P2P network, a consensus algorithm, a chain account book, a cryptography algorithm, an intelligent contract and the like, after the writing, debugging, installation and deployment of the intelligent contract related to the service are completed, the intelligent contract is operated on a chain intelligent contract layer, and the service layer completes the calling and execution of the intelligent contract by accessing a block chain service gateway, so that the uplink of bidding service data is realized.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A block chain-based bidding system, comprising:
the block chain network comprises a main chain network and at least one alliance chain accessed to the main chain network, wherein a supplier information base is stored in the main chain network, and the supplier information base stores the pre-acquired supplier information of each supplier;
and the bidding service platform is respectively operated in each alliance chain and comprises:
the bidding management module is used for issuing a bidding file by a bidding party, generating a hash value of the bidding file and storing the hash value into the block chain network;
the bid management module is used for submitting a bid application according to the bid document by each supplier, extracting corresponding supplier information from the supplier information base after obtaining a bid qualification, generating bid materials and storing the bid materials to the block chain network;
the bid evaluation management module is used for providing subjective scores for experts according to the bid materials and storing the subjective scores into the block chain network, and obtaining comprehensive scores of the suppliers by combining with the subjective evaluation according to the bid materials and the rating rules pre-configured in the block chain network and storing the comprehensive scores into the block chain network;
and the scaling management module is used for taking the supplier with the highest comprehensive score in the block chain network as a successful bid party, generating corresponding successful bid notice sheets to be respectively sent to the successful bid party and the tenderer, enabling the successful bid party and the bidder to sign a purchase contract on line, and storing the successful bid notice sheets and the purchase contract to the block chain network.
2. The block chain-based bidding system according to claim 1, wherein each alliance chain further comprises a third party data authority for providing third party trusted data of each of said suppliers as said supplier information to store in said supplier information repository.
3. The system of claim 2, wherein the third-party data entity interfaces to data uplink.
4. The blockchain-based bidding system according to claim 1, wherein the nodes in the backbone network include consensus nodes, accounting nodes, and light nodes, wherein,
the consensus node comprises a headquarter node as the tenderer and branch company nodes subordinate to the headquarter node, and is used for performing consensus on the application uplink data and distributing the application uplink data to each accounting node after the consensus is successful;
the accounting node is a purchasing platform node of the tenderer and is used for verifying the application uplink data and storing a verification result and the application uplink data;
the light nodes comprise supplier nodes and expert nodes and are used for correspondingly storing the corresponding supplier information and the subjective scores given by the expert.
5. The system of claim 1, wherein the pre-configured scoring rules in the blockchain network comprise a first scoring rule and a second scoring rule;
the bid evaluation management module comprises:
the expert scoring unit is used for giving the subjective score according to the bidding materials by the expert and storing the subjective score to the block chain network;
the objective scoring unit is used for processing the bidding materials and the first scoring rule to obtain objective scores of the suppliers;
and the comprehensive scoring unit is respectively connected with the expert scoring unit and the objective scoring unit and is used for processing the subjective score and the objective score according to the second scoring rule to obtain the comprehensive score of the supplier and storing the comprehensive score to the block chain network.
6. The blockchain-based bidding system according to claim 5, wherein the scoring rules are configured in an intelligent contract of the blockchain network.
7. The block chain-based bidding system according to claim 2, wherein the bidding service platform further comprises a supplier management module, the supplier management module comprises:
the registration unit is used for registering the supplier and acquiring registration identity information as the supplier information;
the verification unit is connected with the registration unit and used for verifying the identity of the registered supplier during login according to the supplier information;
the maintenance unit is connected with the registration unit and is used for the supplier to maintain the supplier information;
and the importing unit is used for importing the third-party trusted data as the supplier information and storing the third-party trusted data to the supplier information base.
8. The block chain-based bidding system according to claim 7, wherein the supplier management module further comprises a risk pre-warning unit for obtaining and storing historical performance of the supplier as the supplier information to assess the performance risk of the supplier;
and the bidding management module adds the historical performance behavior to the bidding materials and stores the historical performance behavior to the block chain network, so that the scoring rule in the bidding management module comprises the performance risk of the supplier.
9. The block chain-based bidding system according to claim 1, wherein the bidding service platform further comprises a system management module for implementing ledger management, and/or node management, and/or network management, and/or contract management, and/or authority management, and/or digital certificate management on the block chain network.
10. The blockchain-based bidding system according to claim 1, wherein the logical architecture of the blockchain network comprises an application layer, a business layer and a blockchain bottom layer arranged from top to bottom;
the application layer is used for providing an online bidding entrance for the tenderer and the supplier;
the business layer is used for supporting the realization of business functions of the bidding business platform;
and the block chain bottom layer is used for realizing the uplink storage of bidding service data generated in the bidding process.
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