| Abstract Scope |
Additive manufacturing (AM) systems increasingly depend on distributed digital workflows where CAD models, process parameters, and manufacturing instructions are exchanged among designers, suppliers, and production facilities. However, the transmission of AM files across distributed networks introduces cybersecurity and data management challenges, including unauthorized changes to files, intellectual property (IP) theft, data tampering, lack of traceability, and insecure access controls. To address these challenges, this paper proposes a blockchain-enabled secure file-sharing framework combining Git, IPFS, and Hyperledger Fabric (HLF). Git manages file versioning and commit metadata, while IPFS provides decentralized content-addressed storage for AM files via unique content identifiers (CIDs). Hyperledger Fabric creates a permissioned blockchain layer for immutable logging, identity verification, and access control using Fabric CA/MSP and chaincodes. The proposed framework enables secure file registration, controlled data sharing, integrity verification, and traceable relationships among distributed manufacturing organizations, thereby improving cybersecurity, transparency, and data integrity in AM environments. |