A blockchain-based project cost data security and whole-process management method

By constructing event-level cost atomic units and an improved FileDAG structure, the problem of expressing version relationships in engineering cost data management is solved, and the structured organization and consistency control of multi-version data are realized, improving the traceability and reliability of the data.

CN122366871APending Publication Date: 2026-07-10
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-04-23
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies lack the ability to structurally express the evolution process of cost data in engineering cost data management, making it difficult to depict version relationships and change paths. This results in difficulty in ensuring data consistency and the lack of a fine-grained modeling mechanism for differential changes, making it impossible to effectively express and trace differences between versions.

Method used

By constructing event-level cost atomic units and an improved FileDAG structure, combined with version derivation paths, field-level differential modeling, and approval confirmation relationships, the structured organization and evolution path characterization of multi-version data are realized. Furthermore, through a legitimate version screening and path consistency verification mechanism, the accuracy and traceability of data selection are improved.

Benefits of technology

It significantly improves the traceability and structural expression of cost data evolution, realizes unified management and path association of multiple versions of data within the same cost item, enhances the certainty and reliability of data selection, and ensures the secure storage and consistency control of engineering cost data throughout the entire process.

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Abstract

This invention discloses a blockchain-based method for the security and full-process management of engineering cost data, comprising: Step 1: collecting engineering project cost data and performing event decomposition to generate event-level cost atomic units and associating them with cost documents; Step 2: constructing an event-level causal state graph and generating cost item nodes; Step 3: performing content addressing processing on cost documents to generate version nodes and establishing association relationships; Step 4: performing differential calculation on cost documents before and after revision to generate differential nodes; Step 5: establishing version-derived edges and differential-bearing edges based on an improved FileDAG structure and writing them into the approval and confirmation relationship; Step 6: establishing reference-locking edges and determining the current legitimate version node; Step 7: performing consistency verification and writing the data into the blockchain ledger or abnormal branch structure respectively. This invention achieves secure storage and full-process consistency management of engineering cost data.
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