CN111798209A

CN111798209A - Engineering project management method based on block chain, electronic equipment and storage medium

Info

Publication number: CN111798209A
Application number: CN202010621476.2A
Authority: CN
Inventors: 程晗蕾; 鲁静; 黄昭慈; 王超; 向智宇
Original assignee: Yuanguang Software Co Ltd
Current assignee: Yuanguang Software Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-10-20

Abstract

The application discloses a block chain-based engineering project management method, electronic equipment and a storage medium, wherein the engineering project management method comprises the following steps: the method comprises the steps that a building node of a block chain obtains electronic data of an engineering project; and storing the electronic data to a project database under the chain, and storing the encrypted value of the electronic data in a distributed manner, so that a management node of the block chain can acquire the electronic data and the encrypted value to perform completion settlement. By the method, the on-chain and off-chain storage architectures of the engineering project data can be established, the credible sharing of the engineering data is effectively realized, and the completion settlement efficiency and the credibility are improved.

Description

Engineering project management method based on block chain, electronic equipment and storage medium

Technical Field

The present application relates to the field of engineering management and blockchain application technologies, and in particular, to a method, an electronic device, and a storage medium for managing an engineering project based on a blockchain.

Background

The implementation of capital construction project is characterized by large project investment, large fund flow, long construction period and wide related range. The completion settlement of the engineering project emphasizes the comprehensive and actual situation that all construction cost of the engineering project from the beginning of construction to the completion delivery is combated, the investment benefit of the construction project is reflected, and the construction experience is summarized.

The completion settlement of the engineering project usually involves a plurality of engineering participants, and because the participants are difficult to be in full cooperation and difficult to be coordinated, the reality and the accuracy of the completion settlement are questioned, and the timeliness of the completion settlement is easily influenced.

Disclosure of Invention

The technical problem that this application mainly solved is: the block chain-based engineering project management method, the electronic equipment and the storage medium are provided, an on-chain and off-chain storage architecture of engineering project data can be established, trusted sharing of the engineering data is effectively achieved, and completion settlement efficiency and the trust are improved.

In order to solve the technical problem, the application adopts a technical scheme that: the project management method based on the block chain comprises the following steps: the method comprises the steps that a building node of a block chain obtains electronic data of an engineering project; and storing the electronic data to a project database under the chain, and storing the encrypted value of the electronic data in a distributed manner, so that a management node of the block chain can acquire the electronic data and the encrypted value to perform completion settlement.

Optionally, the performing distributed storage on the encrypted value of the electronic data comprises: generating identification information of the electronic data at least based on the channel identification of the construction node, the link-down storage address of the electronic data in the link-down engineering database, the encryption value of the electronic data and the identification parameter; and associating the encrypted value of the electronic data with the identification information and then performing distributed storage.

Optionally, the downlink engineering database comprises a cloud database; storing electronic data to an off-chain engineering database includes: the electronic data are stored in a cloud database, and access rights corresponding to the electronic data are configured, so that the management node acquires the electronic data from the cloud database when the management node meets the corresponding access rights.

Optionally, after the building node of the blockchain acquires the electronic data of the engineering project, the method further includes: acquiring historical data of the engineering project to check the validity of the electronic data; when the verification is passed, carrying out digital signature on the electronic data and the encrypted value; storing the electronic data to a linked project database, and storing the encrypted value of the electronic data in a distributed manner, wherein the distributed storage comprises the following steps: and storing the signed electronic data to a linked engineering database, and performing distributed storage on the signed encryption value.

In order to solve the above technical problem, another technical solution adopted by the present application is: the project management method based on the block chain comprises the following steps: acquiring electronic data by a management node of a block chain, and acquiring an encryption value of the electronic data from block chain data; the electronic data is stored in a project database under the block chain by a construction node of the block chain, and the encrypted value is an encrypted value which is obtained by encrypting the electronic data and then performing distributed storage by the construction node; an as-built decision is made based at least on the electronic data and the cryptographic value.

Optionally, the acquiring of the electronic data by the management node of the blockchain includes: inquiring identification information of electronic data in the block chain data; the identification information is generated by the construction node at least based on the channel identification of the construction node, the link-down storage address of the electronic data, the encryption value of the electronic data and the identification parameter; and sending an access request of electronic data corresponding to the identification information to the construction node to request to acquire the electronic data.

Optionally, after querying the identification information of the electronic data in the blockchain data, the method further includes: executing a first intelligent contract of the block chain to judge whether the access authority of the electronic data corresponding to the identification information is met; and if so, executing the step of sending an access request of the electronic data corresponding to the identification information to the construction node.

Optionally, performing an as-built decision based on at least the electronic data and the cryptographic value comprises: acquiring balance asset data of the engineering project; executing a second intelligent contract of the block chain to judge whether the balance asset data is consistent with the residual asset number calculated based on the electronic data corresponding to the encrypted value; and if the current completion settlement report is consistent with the current completion settlement report, forming a completion settlement report of the engineering project, and storing the completion settlement report in a distributed manner.

In order to solve the above technical problem, another technical solution adopted by the present application is: an electronic device is provided that includes a processor, a memory, and communication circuitry, the processor coupling the memory and the communication circuitry; the communication circuit is used for the electronic equipment to communicate with external equipment; the memory is used for storing program instructions; the processor is used for executing program instructions to realize the above engineering project management method based on the block chain.

In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a computer storage medium for storing program instructions executable by a processor for implementing the above-described blockchain-based engineering project management method.

The beneficial effect of this application is:

according to the method, the data storage architecture of the on-chain storage and the off-chain storage is set, after the construction nodes acquire electronic data of the engineering project, the electronic data can be stored in the off-chain engineering database, and the encrypted values of the electronic data are stored in a distributed mode, so that the electronic data of the engineering project can be well stored, and the electronic data are not easy to tamper through the encrypted values of the on-chain certificates, therefore, when the management nodes complete the settlement, the required electronic data can be quickly acquired through accessing the off-chain engineering database, the corresponding encrypted values of the electronic data in the block chain data are acquired through the synchronous block chain data, the authenticity of the electronic data can be verified through the encrypted values, and therefore the efficiency and accuracy of the completion settlement by using the electronic data can be effectively improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an engineering project management system of the present application;

FIG. 2 is a flowchart illustrating a first embodiment of a block chain-based engineering project management method according to the present application;

FIG. 3 is a flowchart illustrating a second embodiment of the method for managing an engineering project based on a blockchain according to the present application;

FIG. 4 is a flowchart illustrating a third embodiment of the method for managing an engineering project based on a blockchain according to the present application;

FIG. 5 is a flowchart illustrating a fourth embodiment of the method for managing an engineering project based on a blockchain according to the present application;

FIG. 6 is a flowchart illustrating a fifth embodiment of the method for managing engineering projects based on block chains according to the present application;

FIG. 7 is a schematic diagram of an embodiment of an electronic device of the present application;

FIG. 8 is a schematic structural diagram of an embodiment of a storage medium according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The inventors of the present application have found, through long-term research: because a large number of participants are involved in the implementation process of the engineering project from construction to completion, a large amount of related data can be generated, the data of the engineering project is managed and stored by each participant respectively, and the data is not only blocked, hard to confirm, hard to verify, hard to inquire and hard to obtain evidence, but also easy to tamper and leak, thereby not only affecting the fairness and reliability of capital settlement of the engineering project, but also reducing the efficiency of completion settlement. To solve these problems, the present application proposes at least the following embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the engineering project management system of the present application. The project management system 100 of the present embodiment includes a plurality of blockchain nodes 101 participating in a blockchain network, a blockchain distributed ledger 110, and a down-link project database 120.

Blockchain nodes 101 may participate in the process of distributed storage of blockchain data, including endorsement, sorting, packing of blocks, consensus, synchronization of blockchain data, and the like. The plurality of blockchain nodes 101 may form a corresponding organization according to the affiliated units or departments, or form a corresponding organization according to the participated blockchain things. The blockchain node 101 may provide a visual interface for implementing information interaction between a user and a blockchain network; or the interaction of the user and the blockchain network is realized indirectly through a client terminal interacting with the blockchain network.

Engineering projects often involve multiple participants and multiple divisions of participants from project construction to project completion that may configure a respective at least one blockchain node 101 to participate in a blockchain network to perform a respective blockchain transaction. For example, the engineering project construction process includes participation of multiple parties, such as a construction party director, an engineering management department, a financial department, a design unit, a construction unit, an audit unit, a construction unit, a supervision unit, and a project responsible party, and each department or unit sets a corresponding block link point 101 to participate in the block link things, and may include a design unit node, a construction unit node, a contract unit node, a construction unit node, a supervision unit node, a financial department node, an audit department node, and a budget department node, and other block link points 101. All unit nodes participating in the block chain network can carry out data endorsement and consensus together, on-chain verification and mutual supervision of engineering project data are achieved, and meanwhile data sharing among multiple main bodies is achieved in business.

In this embodiment, the blockchain node 101 may collect electronic data of the engineering project, and broadcast the electronic data to the blockchain network in a transaction form for distributed storage; the blockchain node 101 may also synchronously store the blockchain distributed ledger 110, and obtain corresponding blockchain data from the blockchain distributed ledger 110.

For example, some of the blockchain nodes 101 in the engineering project construction process may be used as construction nodes for acquiring electronic data generated in the engineering project construction process, encrypting the electronic data, and broadcasting the encrypted electronic data to the blockchain network, and other nodes may participate in sorting, packaging and consensus of the encrypted values of the electronic data to implement distributed storage of the encrypted values. The construction node may store the electronic element corresponding to the electronic data by itself, for example, locally in the construction node, so as to facilitate subsequent inspection. The construction nodes include, for example, design unit nodes, construction unit nodes, contract unit nodes, construction unit nodes, supervision unit nodes, and the like. And a special sequencing node can be arranged in the block chain network and is used for sequencing and packaging the encrypted values to be uplink into blocks, so that the calculation of the node can be effectively concentrated, and the data uplink storage efficiency is improved.

At least some of the block link points 101 during construction of the project may also be used as management nodes, which may perform budget assessment, asset settlement, or completion settlement on the project. The management nodes include, for example, finance department nodes, auditing department nodes, budget department nodes, and the like. The management node may store the blockchain distributed ledger 110 and obtain corresponding blockchain data from the blockchain distributed ledger 110 for accounting. The management node may also obtain corresponding electronic data after obtaining the access authority of the data stored in the construction node, and perform completion settlement based on at least the electronic data and the corresponding encryption value thereof on the block chain.

In this embodiment, the nodes participating in the blockchain network may also be allowed to join the blockchain network to perform data security interaction and access control after being authenticated by the MSP service and the PKI system in advance. For example, a constructor of an engineering project issues bidding announcement on line, determines a winning unit after a bidding, bidding evaluation and scaling meeting, stores an industrial and commercial business license, an asset liability statement, credit investigation, identity information of a responsible person and the like of the winning unit in an enterprise archive management library, links the credit certificate with a corresponding encrypted value, distributes a digital identity certificate for a winning unit node through an MSP service and a CA node, and allows the digital identity certificate to be added into a blockchain network to participate in blockchain related transactions after authentication.

A plurality of channels may also be provided in the blockchain network, and the blockchain node 101 may participate in one or more of the channels, allowing access to the blockchain distributed ledger 110 corresponding to the participating channels. The sorting node in the block chain network can pack the encrypted value of the electronic data into blocks and link the blocks to the block chain to form a system chain of the block chain network, and the private data of the nodes in the channel can form a virtual chain in the channel and is commonly maintained by the block chain nodes 101 participating in the channel. For example, the blockchain distributed ledger 110 may store data of a plurality of engineering projects, each engineering project corresponds to one channel in the blockchain network, and the blockchain node 101 of the participant of each engineering project may participate in the channel to upload the encrypted value of the electronic data or synchronize the blockchain data of the channel, so that data isolation of the plurality of engineering projects may be effectively achieved, and the ordered management and privacy security of the engineering project data are facilitated.

The engineering project management system 100 of this embodiment may further include an internet of things device 102 connected to the block link point 101, including a mobile terminal, a local storage device, a data acquisition device, and the like. The mobile terminal comprises a mobile phone, a notebook, a tablet computer and the like, can be provided with a client program and is used for carrying out data interaction with the block chain link point 101 and realizing information interaction between a user and a block chain network. The local storage device can be used for storing electronic elements of the engineering project and other related data, and standard management of the engineering project data is realized. Each unit in the construction process of the engineering project can be provided with a corresponding local storage device for storing and managing the related data of the respectively generated engineering project. The data acquisition device can be used for acquiring electronic data in the engineering project, for example, the data acquisition device comprises an image acquisition device, and can shoot or scan paper files of the engineering project to form corresponding electronic data or acquire related images of a construction site of the engineering project; further, for example, a measuring device, a positioning device, etc., can each acquire corresponding electronic data. The data collected by the data collection device can be transmitted to the block link point 101 for corresponding processing, or can be transmitted to the block link point 101 after being screened.

The engineering project management system 100 of the embodiment also constructs a data storage architecture combining the on-chain storage and the off-chain storage of the engineering project data. Storing on-chain includes storing encrypted values of electronic data of the engineering project to blockchain distributed ledger 110, and storing off-chain includes storing electronic data of the engineering project to off-chain engineering database 120. The encrypted value of the chain certificate can be used for verifying the authenticity and reliability of electronic data under the chain, and the electronic data of the engineering project is prevented from being tampered.

The down-link project database 120 may include a data set of project items stored locally or in a cloud. Each participant of the engineering project may be provided with a separate, down-link engineering database 120 for storing electronic data of the respective created or received engineering project. Or, the downlink engineering database 120 may also be a shared cloud database, and each participant may store respective electronic data in the cloud database, but keep the control authority for the cloud database, which is beneficial to implementing electronic data sharing and can also ensure the privacy and security of the electronic data.

The down-link engineering database 120 may be used to store electronic data for one or more engineering projects. When the off-link engineering database 120 stores electronic data of a plurality of engineering projects, the construction node may store the electronic data in association with the project numbers of the corresponding engineering projects, so as to effectively distinguish the electronic data of each engineering project and avoid data mixing.

The project management system 100 may also be configured with an index database 130 for storing a directory file of electronic data to facilitate retrieval queries of electronic data for a project. The index database 130 may store a directory file related to all electronic data in the down-link project database 120, and update the directory file in time when new electronic data is updated in the down-link project database 120. In some embodiments, the blockchain link point 101 stores the electronic data in the downlink engineering database 120, and filters a portion of the electronic data to be encrypted and then stores the portion of the electronic data in the blockchain distributed ledger 110, so that the index database 130 may store a directory file corresponding to the downlink engineering database 120 and a directory file corresponding to the blockchain distributed ledger 110, respectively.

Based on the data storage architecture in this embodiment, after acquiring the electronic data of the engineering project, the construction node may store the electronic data in the down-link engineering database 120, and perform distributed storage on the encrypted value of the electronic data. Therefore, the electronic data of the engineering project can be well stored, and the electronic data is ensured not to be easily tampered by the encrypted value of the certificate stored on the chain. The management node can quickly obtain the required electronic data by accessing the engineering database 120 under the chain, and obtain the encrypted value of the corresponding electronic data in the block chain data through the synchronous block chain distributed book 110, and the authenticity of the electronic data can be verified by using the encrypted value, so that the efficiency and the accuracy of completion settlement by using the electronic data can be effectively improved.

Referring to fig. 2, fig. 2 is a schematic flowchart of a block chain-based engineering project management method according to a first embodiment of the present application. The embodiment comprises the following steps:

s101: the construction node obtains electronic data of the engineering project.

In this embodiment, the construction nodes include, for example, block link nodes operated by each constructor in the engineering project implementation process, such as construction unit nodes, design unit nodes, contract unit nodes, construction unit nodes, supervision unit nodes, and the like.

Electronic data of an engineering project may include project-related data generated during the construction through completion of the project. For example, during the construction of an engineering project, a large amount of project data, such as approved project entrustment contracts, project construction books, feasibility study reports, project planning licenses, equipment and material purchase orders and invoice certificates, quality assurance reports, acceptance reports, supervision data, etc., are generated, the project data may include electronic data and some paper documents, the construction node may electronize the paper documents, and the electronized data and electronic elements formed by electronizing the paper documents are electronic data of the engineering project.

The construction node may obtain electronic data of the engineering project in one or more ways. For example, the internet of things equipment in the engineering project management system can collect electronic data of an engineering project and transmit the electronic data to the construction node, and the construction node can execute corresponding operation after receiving the electronic data. The construction node can also be provided with a data acquisition unit, and corresponding electronic data can be acquired through the data acquisition unit. The construction node may also receive user-entered electronic data of the engineering project by providing a corresponding data input interface.

S102: the construction node stores the electronic data to an off-chain engineering database.

In this embodiment, the downlink engineering database may include a data set of engineering projects stored locally or in a cloud. The local storage may be a self storage space of the construction node, or a local storage device of a unit to which the construction node belongs. The construction node can store the electronic data in a database of the local storage end, so that the privacy of the electronic data can be effectively protected. And/or the construction node can also store the electronic data to a shared cloud database, so that the data sharing efficiency is improved.

When the building node uploads the electronic data to the shared cloud database, the electronic data can be encrypted to achieve data isolation and access control. For example, after the construction node acquires electronic data of an engineering project, the data is encrypted by an encryption algorithm, the encrypted data obtained after encryption is uploaded to a cloud database, and description information of the encrypted data is configured, so that other block link points can retrieve corresponding encrypted data through the description information, but specific content of the encrypted data cannot be obtained without decryption, and data isolation and access control of the electronic data are achieved.

Optionally, before storing the electronic data, the construction node may also verify the accuracy of the electronic data, such as checking whether the data format of the electronic data is correct, whether the information is complete, whether the information is repeated, and the like. The construction node can store the electronic data to the down-link engineering database after verifying that the electronic data is accurate and correct. If the construction node verifies that the electronic data has errors or unqualified parts, the electronic data can be timely fed back to a user or a data source side so as to be timely corrected or otherwise processed.

When the construction node participates in a plurality of engineering projects, the construction node can associate electronic data of different engineering projects with corresponding project numbers for the electronic data of the plurality of engineering projects, and respectively store the associated electronic data into the linked engineering database. When the electronic data is encrypted and stored, different encryption modes can be adopted for encryption, or different keys are adopted for encryption, so that the electronic data of each engineering project can be isolated, and the privacy and the safety of the data can be protected.

S103: and the construction node performs distributed storage on the encrypted value of the electronic data after encryption.

In this embodiment, after the construction node acquires the electronic data of the engineering project, the encrypted value of the electronic data may be stored in a distributed manner. The cryptographic value may be a string of fixed length, or it may be a combination of numbers of fixed memory size. After the construction node stores the encrypted value in a distributed manner, the encrypted value stored in the block chain distributed account book can be used for verifying whether the electronic data is tampered.

For example, the construction node may encrypt the electronic data by using a hash encryption algorithm to generate a corresponding hash value, and then distributively store the hash value. Due to the characteristics of the hash encryption algorithm, each electronic data can obtain a unique hash value after being subjected to hash encryption, and once the corresponding original electronic data is tampered, the hash values obtained after the electronic data is encrypted again are different, so that whether the electronic data is tampered or not can be verified by utilizing the hash values.

After the construction node encrypts the electronic data, the encrypted value of the electronic data can be broadcast to the blockchain network, and other blockchain nodes in the blockchain network can package the encrypted value into blocks for distributed storage after verifying that the encrypted value is valid. When a special sorting node is arranged in the block chain network, the construction node can send the encrypted value to the corresponding sorting node, and the sorting node sorts and packages the encrypted value so as to realize distributed storage. Or when the organization to which the construction node belongs is provided with a main node communicating with the sequencing node, the construction node can also send the encrypted value to the main node, and then the encrypted value is sent to the sequencing node by the main node for sequencing and packaging.

Optionally, the construction node may also filter and process the electronic data in advance before storing the electronic data. For example, the construction node may delete duplicate data in the electronic data; alternatively, the construction node may format convert the electronic data to meet format requirements, and the like. The construction node can store the screened electronic data to a linked engineering database and perform distributed storage on the corresponding encrypted value of the electronic data. Alternatively, the construction node may store the complete data under the chain and the encrypted value of the critical data on the chain. For example, the construction node may store both the screened part of the electronic data and the rest of the electronic data in the down-link engineering database, and store an encrypted value obtained by encrypting the screened part of the electronic data in the block chain distributed book.

The construction node carries out distributed storage on the encrypted value of the electronic data after encryption, but not directly carries out distributed storage on massive electronic data of the engineering project, so that the calculated amount of the block chain nodes can be effectively saved, the consensus efficiency of the block chain nodes is improved, the energy loss is reduced, and the storage space of the block chain distributed account book can be greatly saved.

S104: the management node obtains the electronic data and the encrypted value.

In this embodiment, the management node may perform completion settlement or other management work on the engineering project. The management nodes include, for example, finance department nodes, auditing department nodes, budget department nodes, and the like. The management node can obtain electronic data of the engineering project and the corresponding encrypted value. For example, the management node may obtain electronic data for the engineering project from a linked engineering database. Alternatively, the management node may request the construction node for electronic data, and the construction node may send corresponding electronic data to the management node according to the request.

The management node may synchronize the blockchain data in the blockchain distributed ledger and obtain the encrypted value corresponding to the electronic data from the blockchain data. The management node may also retrieve the original electronic data from the down-link database. In some embodiments, when the management node acquires electronic data, the management node may also query a corresponding directory file in the index database in advance, determine relevant information of the required electronic data, determine a manner of acquiring the electronic data based on the relevant information of the electronic data, and then acquire the electronic data in a corresponding manner.

S105: the management node performs an as-built settlement based on at least the electronic data and the encrypted value.

After the management node obtains the electronic data and the corresponding encrypted value, completion settlement can be carried out. In this embodiment, the management node acquiring electronic data may include acquiring electronic data stored by a plurality of construction nodes, for example, electronic data stored by a plurality of construction nodes including a construction unit node, a design unit node, a contract unit node, a construction unit node, a supervision unit node, and the like. Correspondingly, the management node can also obtain the encrypted values corresponding to the plurality of electronic data.

The performing an as-built settlement based on at least the electronic data and the encrypted value by the management node may further include: encrypting the electronic data to obtain a corresponding encrypted value, and comparing the encrypted value with the encrypted value in the block chain distributed account book; if the electronic data are consistent, namely the electronic data are verified to be true and accurate, completion settlement of the corresponding engineering project can be carried out according to the electronic data; if the electronic data are inconsistent, namely the electronic data are tampered, the management node can further check the authenticity of the electronic data or send an inquiry message to a construction node corresponding to the electronic data. The management node executes completion settlement only after confirming that the electronic data is real and effective, so that the effectiveness and accuracy of settlement can be improved.

The management node performs completion settlement, so that on one hand, the actual construction cost and the investment result of the construction project can be correctly reflected; on the other hand, the working effect of investment control can be assessed through the comparative analysis of completion settlement, approximate calculation and budget, and the investment benefit of future construction engineering can be improved. In the embodiment, the encryption value of each electronic data of the project is stored through the block chain distributed type account book, so that the authenticity of the electronic data can be verified, and the accuracy of completion settlement can be effectively improved.

According to the method, the data storage architecture of the on-chain storage and the off-chain storage is set, after the construction nodes acquire the electronic data of the engineering project, the electronic data can be stored in the off-chain engineering database, and the encrypted value of the electronic data is stored in a distributed mode, so that the electronic data of the engineering project can be well stored, the electronic data is not easy to tamper through the encrypted value of the on-chain certificate, therefore, when the completion settlement is carried out by the management nodes, the required electronic data can be quickly acquired through accessing the off-chain engineering database, the corresponding encrypted value of the electronic data in the block chain data is acquired through the synchronous block chain data, the authenticity of the electronic data can be verified through the encrypted value, and the efficiency and the accuracy of the completion settlement by using the electronic data can be effectively improved.

In this embodiment, the sequence of steps S101 to S105 is the description sequence in this embodiment, and is not limited to the sequence of the engineering project management method based on the block chain in the execution process in this embodiment, and on the premise that the method can be implemented, some steps may be executed simultaneously or individually by exchanging the sequence.

Referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of the block chain-based engineering project management method according to the present application. This embodiment is further described on the basis of the first embodiment of the block chain-based engineering project management method of the present application, and the same steps as those in the first embodiment of the block chain-based engineering project management method of the present application are not described herein again. The embodiment comprises the following steps:

s201: the construction node obtains electronic data of the engineering project.

S202: the construction node stores the electronic data to an off-chain engineering database.

In this embodiment, the downlink engineering database may include a cloud database. The building node stores the electronic data to the downlink engineering database and can also store the electronic data to the cloud database and configure access rights corresponding to the electronic data. The construction node uploads the electronic data to the cloud database, so that other nodes can acquire the electronic data from the waybill database when meeting corresponding access rights, access control of the construction node on the uploaded electronic data can be guaranteed, and the possibility that the electronic data is tampered or leaked can be effectively reduced.

And each electronic data in the cloud database can be configured with corresponding access authority. The access rights include, for example, an identity of an accessible person, an operable manner, a number of times of access, an accessible time limit, and the like. For example, a building node stores an electronic data to a cloud database, and the access right of the electronic data is configured to allow some nodes to download the electronic data within a certain period of time. The construction node is favorable for data isolation in the cloud database by configuring corresponding access authority to the electronic data, and can effectively protect the privacy of the electronic data. The building node can also encrypt the electronic data and upload the electronic data to the cloud database, and other nodes can obtain corresponding access rights through modes of issuing keys and the like.

The construction node configures the corresponding access authority of the electronic data, the access authority configuration can be written into the intelligent contract of the block chain, and other nodes in the block chain network can synchronize the intelligent contract, so that when other block chain nodes access the electronic data in the engineering database under the chain, the access authority can be automatically verified through the intelligent contract, and the authority verification speed can be effectively improved.

In some embodiments, the construction node may also utilize a block chain's pass-through to implement access rights control for electronic data. For example, after storing electronic data, the construction node obtains a data certificate corresponding to the electronic data as an authority control for the electronic data. The construction node can confirm the transfer of the data access right through the transfer data. The construction node can also configure access conditions corresponding to the data permit when transferring the data permit, for example, the access conditions include data access time limit, data operation authority, a data permit transfer mode, a data permit destruction mode and the like, so that access operation to the electronic data is limited, and the access safety of the electronic data is improved.

S203: the construction node configures identification information of the electronic data.

In this embodiment, when the construction node performs distributed storage on the encrypted value of the electronic data, the construction node may also pre-configure the identification information of the electronic data, and perform distributed storage after associating the encrypted value of the electronic data with the identification information. The identification information may be used to identify each piece of electronic data, thereby facilitating efficient differentiation and orderly management of the large amount of electronic data of the engineering project.

For example, the construction node may configure the identification information of the electronic data according to the identification of the construction node, the project number of the project, the uploading time, the uploading frequency, and other related information. Alternatively, the construction node may also generate identification information of the electronic data based on metadata of the electronic data. The metadata may be stored in the down-link engineering database, and may be used to describe related information of the electronic data, such as data name, data type, attribute description, data size, and the like, so as to facilitate quick access to related summary information of the electronic data when accessing the electronic data.

Optionally, the construction node may further generate the identification information of the electronic data based on at least the channel identification to which the construction node belongs, the link-down storage address of the electronic data in the link-down engineering database, the encrypted value of the electronic data, and the identification parameter.

The construction node may participate in one or more channels in the blockchain network. When the building node configures the identification information of the electronic data, the channel to which the building node belongs refers to a channel in which the building node is participating when uploading the encrypted value of the electronic data, the encrypted value of the electronic data is linked and then stored in a virtual chain of the channel, and only the block chain link points participating in the channel can synchronize the block chain data. The construction node can also determine a corresponding channel according to the project number of the project to which the electronic data belongs, and further determine a corresponding channel identifier.

In this embodiment, the encrypted value of the electronic data may include a hash value of the electronic data encrypted by a hash encryption algorithm. After the electronic data is subjected to hash encryption, a hash value with a specific length is generated, the hash value can be used for protecting the privacy and the safety of the electronic data, and the hash value can be used for verifying the authenticity of the electronic data after being stored in a distributed mode.

The identification parameters may include a specific identifier, random parameters, or other related parameters. The identification participation can be used to identify or verify certain attributes of the electronic data. For example, the identification parameter may include a Universally Unique Identifier (UUID) that can ensure spatial and temporal uniqueness of the identification information of the electronic data. For example, the universally unique identifier may ensure uniqueness of the generated identification information by MAC address, timestamp, namespace, random number, pseudorandom number, and the like.

The construction node can generate identification information of the electronic data based on the channel identification of the construction node, the link storage address of the electronic data in the link engineering database, the encryption value of the electronic data and the identification parameter. For example, if the storage address of a certain electronic data is a URL, the Hash value after Hash encryption is a Hash, and the identification parameter is a universally unique identifier UUID, the construction node may configure the identification information of the electronic data as [ channel ]/[ URL ]/[ Hash ]/[ UUID ].

Optionally, the construction node may further encrypt a down-link storage address of the electronic data, so as to further enhance security and privacy of the electronic data. The construction node can also generate identification information of the electronic data based on the channel identification, the storage address under the encryption chain of the electronic data, the hash value and the identification parameter. In some embodiments, after the construction node configures the identification information of the electronic data, the identification information and the storage state information of the electronic data can be updated to an index database of the engineering project management system, which is beneficial to orderly management and quick query of the electronic data.

S204: and the construction node associates the encrypted value of the electronic data with the identification information and then performs distributed storage.

In this embodiment, when the construction node performs distributed storage on the encrypted value of the electronic data, the construction node may perform distributed storage after associating the encrypted value of the electronic data with the identification information. The identification information is stored in a distributed manner with the encrypted value, and can be used for quick query and retrieval of the encrypted value.

Optionally, after the construction node configures the identification information of the electronic data, the identification information may also be associated with the electronic data in the downlink engineering database, so as to facilitate query. The construction node may further associate identification information of the electronic data with access rights of the electronic data for identifying access rights of different electronic data.

S205: the management node inquires the identification information of the electronic data in the block chain data.

In this embodiment, the acquiring of the electronic data by the management node may further include querying identification information of the electronic data in the block chain data, and the acquiring of the corresponding electronic data is requested by sending an access request of the electronic data corresponding to the identification information to the construction node. The management node may synchronize the blockchain data in the blockchain distributed ledger or the blockchain data in the channel, and query the identification information of the electronic data from the blockchain data. Alternatively, the management node may query the identification information of the electronic data from a query interface or the like provided on an application platform of the blockchain or other node. In some embodiments, the engineering project management system is further provided with an index database, and the management node can also quickly query the identification information of the electronic data from the index database.

After the management node queries the identification information in the blockchain data, the encryption value associated with the identification information can be directly obtained from the blockchain data for standby, so that the execution steps of the management node can be effectively saved, and the data obtaining efficiency is improved.

In this embodiment, after querying the identification information of the electronic data, the management node may send an access request of the electronic data corresponding to the identification information to the construction node to request to acquire the electronic data. Alternatively, after querying the identification information, the management node may further determine whether the access right of the corresponding electronic data is satisfied, for example, execute the following step of S206.

S206: the management node executes the first intelligent contract to judge whether the access authority is met.

After inquiring the identification information of the required electronic data, the management node can also execute a first intelligent contract of the block chain to judge whether the access right of the electronic data corresponding to the identification information is met. In this embodiment, the management node accesses the electronic data of the engineering project, including but not limited to downloading, reviewing, modifying, merging, deleting, and the like. The management node executing the first intelligent contract to determine whether the access right is satisfied may include authentication of an identity of the management node and authentication of an operation right.

For example, the management node may execute a first intelligent contract to verify identity validity, and automatically determine whether the management node has the access right of the electronic data required to be accessed through the intelligent contract, such as verifying whether the management node is authenticated, whether the management node participates in an engineering project to which the electronic data belongs, and the like. The management node can further verify operation authority, such as whether the required electronic data operation authority is currently provided, whether the access times exceed standards, whether the access time is effective, and the like.

Optionally, the management node may further execute the first smart contract in the trusted execution environment to perform the determination of the access right. The trusted execution environment can safely process private information, guarantee that the plaintext of the information cannot be leaked out, and meanwhile prove that data is not tampered. The management node executes the first intelligent contract in the trusted execution environment, the plaintext of the first intelligent contract is invisible to the outside, and related data or information in the execution process is also invisible, so that the privacy and the safety of the data can be effectively protected, and the credibility of the execution result can be improved.

In some embodiments, the management node determining whether the corresponding access rights are satisfied may further include determining whether there is a data pass corresponding to the electronic data. Including, for example, determining whether there is a corresponding data pass and determining whether the data access operation is within an operation range defined by the data pass. For example, the management node may query whether the account has the corresponding data permit, or may also determine whether the corresponding data permit is obtained by querying a distribution record of the corresponding data permit in the block chain distributed ledger. After determining that the data corresponding to the data passes the certificate, the management node may further determine whether the data access mode is within the access mode range defined by the data pass. Specifically, the management node may determine whether the data access satisfies an operation range corresponding to the data certificate, such as within an access time limit, within a limited access frequency, and within an operable manner. If the management node determines that the corresponding data permit exists and the data access mode is in the access mode range corresponding to the data permit, the management node can determine that the access right is met. And if the management node does not have the corresponding data permit or the data access mode exceeds the access mode range corresponding to the data permit, determining that the access authority of the party is not satisfied.

In this embodiment, the multiple pieces of electronic data stored in the construction node may be configured with the same access right, for example, allowing the block chain node participating in the engineering project to download the pieces of electronic data. Alternatively, each piece of electronic data may be configured with different access rights, respectively. For example, the construction node may configure access rights for each piece of electronic data and associate identification information for the electronic data. When executing the first intelligent contract to judge the access right, the management node can respectively judge the access right of each required electronic data.

If the management node executes the first intelligent contract to judge that the access right is satisfied, the step of S207 may be continuously executed. If the management node executes the first intelligent contract to judge that the access authority is not met, the management node can feed back a message that the judgment authority does not pass to the user, so that the user can supplement corresponding data in time or investigate and correct the reason why the access authority is not met.

S207: and the management node sends an access request of the electronic data corresponding to the identification information to the construction node to acquire the electronic data.

After judging that the corresponding access authority is met, the management node can send an access request to the construction node to request to acquire corresponding electronic data. For example, when the management node executes the first intelligent contract to judge that the access right is met, the management node may output a corresponding judgment result, and the management node may form an access request for the electronic data based on the identification information and the corresponding judgment result and send the access request to the construction node to request to acquire the corresponding electronic data. The construction node may provide the corresponding electronic data to the management node upon receiving an access request from the management node.

Optionally, the construction node may also verify that its access request is valid before providing the electronic data. For example, the construction node may verify whether the determination result is correct, whether the determination result is within a valid time limit, whether electronic data corresponding to the identification information is valid, whether the data operation is legal, and the like. The construction node can effectively avoid the error of authority verification caused by that the access authority corresponding to the electronic data is modified and the synchronization of the block chain link points is not timely by further verifying the validity of the access request, thereby further improving the safety and validity of electronic data access.

In this embodiment, after the management node sends the access request to the construction node, the construction node may directly send corresponding electronic data to the management node, so that the management node may directly obtain the corresponding electronic data from the construction node. Or, after receiving the access request, the construction node may open the access right of the corresponding electronic data in the downlink engineering database to the management node, so that the management node may obtain the corresponding electronic data from the downlink engineering database.

S208: the management node obtains the encrypted value of the electronic data from the blockchain data.

In this embodiment, the management node may also obtain the encrypted value of the electronic data in the blockchain data directly from the blockchain data when executing step S205. Or, after querying the identification information, the management node may query the encryption value of the electronic data corresponding to the identification information from the blockchain data.

S209: the management node performs an as-built settlement based on at least the electronic data and the encrypted value.

In this embodiment, after obtaining the electronic data and the encrypted value thereof, the management node may perform completion settlement based on at least the electronic data and the encrypted value. The management node may also generate and distributively store an as built resolution report for the engineering project.

For example, S209 may further include: acquiring balance asset data of the engineering project; executing a second intelligent contract of the block chain to judge whether the balance asset data is consistent with the residual asset number calculated based on the electronic data corresponding to the encrypted value; and if the current completion settlement report is consistent with the current completion settlement report, forming a completion settlement report of the engineering project, and storing the completion settlement report in a distributed manner.

The management node can acquire the balance asset data of the engineering project by receiving the balance asset data transmitted by the client or receiving the balance asset data input by the user through a visual interface. For example, a manager of an engineering project may, upon completion of the project, inventory the remaining assets, such as materials and equipment, of the engineering project, obtain balance asset data for the engineering project, and submit the balance asset data to a management node. The management node may automatically trigger an as built resolution on the engineering project upon receipt of the balance asset data.

After the management node acquires the electronic data of the engineering project, the authenticity of the electronic data can be verified in advance by using the corresponding encrypted value in the block chain data, and if the electronic data is correct, the remaining asset data of the engineering project can be calculated based on the electronic data corresponding to the encrypted value. The calculation of the remaining asset data may be performed automatically by a second intelligent contract of the blockchain. When the management node calculates the remaining asset data of the engineering project, the management node may compare the remaining asset data with the balance asset data of the engineering project. If the management node judges that the balance asset data is consistent with the residual asset number calculated based on the electronic data, the electronic data of the engineering project is correct, completion settlement is effective based on the electronic data, and the management node can further form a completion settlement report of the engineering project and store the completion settlement report in a distributed mode.

In this embodiment, the completion settlement report may include two parts, namely, an completion settlement report and an completion settlement instruction, and may specifically include related data such as financial investment, expense condition and settlement analysis. The management node can encrypt the completion settlement report and then perform distributed storage, and data of each participant in the construction process of the engineering project can be traced through chain storage evidence, so that the fairness of completion settlement can be effectively improved, and evidence can be conveniently obtained when problems occur. The management node may also store the completion resolution report to an in-chain engineering database and retain access control to the completion resolution report.

The construction node of the embodiment can effectively protect the privacy and the safety of the electronic data by configuring the access authority of the electronic data; when the management node accesses the electronic data, the authority judgment is automatically carried out by executing the intelligent contract, so that the security of electronic data access can be effectively improved, corresponding identification information is associated when the electronic data are stored in a chain, the ordered management of the electronic data is facilitated, the management node can conveniently and accurately determine the electronic data to be accessed, and the access efficiency is improved; the management node can also perform distributed storage on the completion settlement report, so that the data storage of the engineering project is more complete, and data tracing and evidence obtaining are facilitated.

In this embodiment, the sequence of steps S201 to S209 is a description sequence in this embodiment, and is not limited to the sequence of the engineering project management method based on the block chain in the execution process in this embodiment, and on the premise that the method can be implemented, some steps may be executed simultaneously or individually by exchanging the sequence.

Referring to fig. 4, fig. 4 is a schematic flowchart of a third embodiment of the block chain-based engineering project management method according to the present application. This embodiment is further described on the basis of the first embodiment of the block chain-based engineering project management method of the present application, and the same steps as those in the first embodiment of the block chain-based engineering project management method of the present application are not described herein again. The embodiment comprises the following steps:

s301: the construction node obtains electronic data of the engineering project.

S302: the construction node obtains historical data of the engineering project to check the validity of the electronic data.

In this embodiment, the construction node may obtain historical data of the engineering project, for example, related data of the engineering project including a project contract, a project recommendation, a project feasibility study report, a purchase list, an evaluation report, and the like. The construction node may obtain electronic data of the engineering project in a variety of ways. For example, the construction node may receive historical data of an engineering project acquired by the internet of things device in the engineering project management system; or may also receive user-entered historical data of the engineering project via the data input interface.

The construction node may also obtain historical data of the project, which may be electronic data stored by other construction nodes into the down-link project database, stored in the down-link project database. The process of acquiring the historical data in the linked project database by the construction node may refer to the process of acquiring the electronic data of the project by the management node, which is not described herein again.

After the construction node obtains the historical data of the engineering project, the effectiveness of the electronic data can be checked based on the historical data. For example, the construction node may pull a project contract of the project, check whether acceptance data about the project in the electronic data conforms to relevant regulations in the project contract, and if so, validate the electronic data; for another example, the construction node may pull a purchase list of the engineering project, check whether the asset data in the electronic data is accurate, and if so, validate the electronic data. The construction node can effectively improve the accuracy of the electronic data by checking the validity of the electronic data in advance, reduce the possibility of multiple modification or updating caused by errors of the electronic data and improve the data storage efficiency.

In this embodiment, if the construction node verifies that the electronic data is valid, that is, if the verification passes, the step of S303 may be executed. If the electronic data verified by the construction node is invalid, namely the verification fails, the information of the verification failure can be fed back, so that the user can check and correct the electronic data in time.

S303: and the construction node digitally signs the electronic data and the encrypted value thereof.

In this embodiment, before the construction node stores the electronic data and the encrypted value thereof, the construction node may also perform digital signature on the electronic data and the encrypted value. For example, the construction node obtains a digital certificate distributed by the CA node, which includes a corresponding public key and private key, with which the construction node can digitally sign the electronic data and the encrypted value. The order in which the construction node digitally signs the electronic data and its encrypted value is not limited.

S304: and the construction node stores the signed electronic data to a down-chain engineering database.

In this embodiment, the building node may further store the electronic data after the digital signature in the downlink engineering database. The electronic data is stored after being signed by the construction nodes, so that the tracing and the right confirming of the data are facilitated, and the ordered management of the electronic data is facilitated.

S305: and the construction node performs distributed storage on the signed encryption value.

In this embodiment, the building node may perform distributed storage on the encrypted value of the electronic data, and may further perform distributed storage on the digitally signed encrypted value. When the construction node configures the identification information of the electronic data, the encrypted value after the digital signature can be associated with the identification information and then stored in a distributed mode. The encrypted value of the electronic data is stored after being signed, which is beneficial to tracing the data source.

S306: the management node obtains the electronic data and the encrypted value.

In this embodiment, the management node may obtain the electronic data from the linked engineering database, may also synchronize the blockchain data in the blockchain distributed ledger, and obtain the encryption value corresponding to the electronic data from the blockchain data.

After the management node acquires the electronic data and the encrypted value, whether the digital signatures of the electronic data and the encrypted value are accurate and consistent can be further judged. For example, the construction node performs digital signature on the electronic data and the encrypted value by using a private key, and after the management node acquires the electronic data and the encrypted value, the management node can verify the digital signature by using a public key of the construction node, so as to determine whether sources of the electronic data and the encrypted value are valid and determine whether the electronic data and the encrypted value are tampered.

S307: the management node performs an as-built settlement based on at least the electronic data and the encrypted value.

Before the electronic data of the engineering project are stored, the construction nodes of the embodiment also check by acquiring historical data of the engineering project, so that the accuracy of the electronic data can be effectively improved, the possibility of multiple modification or updating caused by errors of the electronic data is reduced, and the data storage efficiency is improved; the electronic data is stored after being signed by the construction nodes, so that the tracing and the right confirming of the data are facilitated, and the ordered management of the electronic data is facilitated.

In this embodiment, the sequence of steps S301 to S307 is the description sequence in this embodiment, and is not limited to the sequence of the engineering project management method based on the block chain in the execution process in this embodiment, and on the premise that the method can be implemented, some steps may be executed simultaneously or individually by exchanging the sequence. This embodiment can be combined with the second embodiment of the block chain-based engineering project management method of the present application.

Referring to fig. 5, fig. 5 is a schematic flowchart of a fourth embodiment of the block chain-based engineering project management method according to the present application. This embodiment uses the construction node as the executive body, includes:

s401: the construction node obtains electronic data of the engineering project.

S402: and storing the electronic data to a project database under the chain, and storing the encrypted value of the electronic data in a distributed manner, so that a management node of the block chain can acquire the electronic data and the encrypted value to perform completion settlement.

In this embodiment, regarding more functions and execution steps of the construction node, reference may be made to the description of the first to third embodiments of the block chain-based engineering project management method in the present application, and details are not repeated herein.

Referring to fig. 6, fig. 6 is a schematic flowchart of a fifth embodiment of the block chain-based engineering project management method according to the present application. The embodiment takes a management node as an execution subject, and includes:

s501: the management node acquires the electronic data and obtains the encryption value of the electronic data from the block chain data.

The electronic data is stored in a project database under the block chain by a construction node of the block chain, and the encrypted value is the encrypted value which is stored in a distributed mode after the construction node encrypts the electronic data.

S502: an as-built decision is made based at least on the electronic data and the cryptographic value.

For more functions and execution steps of the management node in this embodiment, reference may be made to the description of the first to third embodiments of the block chain-based engineering project management method in this application, and details are not described herein again.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of an electronic device according to the present application. The electronic device 70 of the present embodiment includes a processor 71, a memory 72, and a communication circuit 73, and the processor 71 is coupled to the memory 72 and the communication circuit 73.

In this embodiment, the communication circuit 73 is used for the electronic device 70 to communicate with an external device. The memory 72 is used to store program instructions. The processor 71 is configured to execute program instructions to implement the steps of the construction node and/or the management node in the first to fifth embodiments of the block chain-based engineering project management method according to the present application.

In the present embodiment, the processor 71 may also be referred to as a CPU (Central Processing Unit). The processor 71 may be an integrated circuit chip having signal processing capabilities. The processor 71 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

For more implementation procedures, functions, and the like of the electronic device 70 in this embodiment, reference may be made to the description of the first to fifth embodiments of the block chain-based engineering project management method in this application, and details are not repeated here.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a storage medium according to the present application. The storage medium 80 in this embodiment is used to store program instructions 81. The program instructions 81 can be executed by a processor to implement the steps of the first node and/or the second node in the first to fifth embodiments of the block chain based engineering project management method of the present application. Specifically, reference may be made to the description of the first to fifth embodiments of the block chain-based engineering project management method in the present application, which is not described herein again.

The method for managing an engineering project based on a block chain according to the first to fifth embodiments of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium 80 includes: various media capable of storing program codes, such as a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or other devices, such as a mobile terminal including a storage medium.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A project management method based on a block chain is characterized by comprising the following steps:

the construction node of the block chain acquires electronic data of the engineering project;

storing the electronic data to a down-chain engineering database, and storing the encrypted value of the electronic data in a distributed manner, so that a management node of the block chain can acquire the electronic data and the encrypted value to perform completion settlement.

2. The project management method of claim 1,

the performing distributed storage on the encrypted value of the electronic data after encryption comprises:

generating identification information of the electronic data at least based on a channel identification to which the construction node belongs, a link-down storage address of the electronic data in the link-down engineering database, an encrypted value of the electronic data and an identification parameter;

and performing distributed storage after associating the encrypted value of the electronic data with the identification information.

3. The project management method of claim 1, wherein the linked project database comprises a cloud database;

the storing the electronic data to an off-chain engineering database comprises:

and storing the electronic data to a cloud database, and configuring access rights corresponding to the electronic data so that the management node acquires the electronic data from the cloud database when meeting the corresponding access rights.

4. The project management method of claim 1,

after the construction node of the block chain acquires the electronic data of the engineering project, the method further comprises the following steps:

acquiring historical data of the engineering project to check the validity of the electronic data;

when the verification is passed, digitally signing the electronic data and the encrypted value;

the storing the electronic data to a linked project database and the storing the encrypted electronic data in a distributed manner comprises:

and storing the signed electronic data to a linked engineering database, and performing distributed storage on the signed encryption value.

5. A project management method based on a block chain is characterized by comprising the following steps:

the management node of the block chain acquires electronic data and acquires an encryption value of the electronic data from the block chain data; the electronic data is stored in a project database under the block chain by a construction node of the block chain, and the encrypted value is an encrypted value which is obtained by encrypting the electronic data and then performing distributed storage by the construction node;

performing an as-built settlement based on at least the electronic data and the encrypted value.

6. The project management method of claim 5,

the acquiring of the electronic data by the management node of the block chain includes:

inquiring identification information of the electronic data in the block chain data; the identification information is generated by the construction node at least based on the channel identification of the construction node, the link down storage address of the electronic data, the encryption value of the electronic data and the identification parameter;

and sending an access request of electronic data corresponding to the identification information to the construction node to request to acquire the electronic data.

7. The project management method of claim 6,

after the querying the identification information of the electronic data in the blockchain data, the method further comprises:

executing a first intelligent contract of the block chain to judge whether the access authority of the electronic data corresponding to the identification information is met;

and if so, executing the step of sending the access request of the electronic data corresponding to the identification information to the construction node.

8. The project management method of claim 5,

said performing an as-built settlement based on at least said electronic data and said cryptographic value comprises:

acquiring balance asset data of the engineering project;

executing a second intelligent contract of the block chain to judge whether the balance asset data is consistent with the residual asset number calculated based on the electronic data corresponding to the encrypted value;

and if the current completion settlement report is consistent with the completion settlement report, forming the completion settlement report of the engineering project, and storing the completion settlement report in a distributed manner.

9. An electronic device comprising a processor, a memory, and communication circuitry, the processor coupling the memory and the communication circuitry; wherein the content of the first and second substances,

the communication circuit is used for the electronic equipment to communicate with external equipment;

the memory is to store program instructions;

the processor is used for executing the program instructions to realize the engineering project management method according to any one of claims 1 to 8.

10. A computer storage medium for storing program instructions executable by a processor to implement the engineering project management method of any one of claims 1 to 8.