Table 2 Formal description of stored content.
From: Research on multi-person collaborative design of BIM drawing based on blockchain
Symbol | Description |
|---|---|
\(Addr_{IPFS}\) | Hash storage address of BIM drawing in IPFS |
\(D_{i}\) | BIM drawing, \(D_{init}\), \(D_{new}\), \(D_{update}\) respectively indicate the initial, newest, and updated BIM drawing |
\(DAI_{record}\) | BIM drawing summary record |
\(DAI\_C_{j}\) | BIM drawing summary related smart contracts, \(DAI\_C_{upload}\), \(DAI\_C_{download}\) respectively indicate BIM drawing summary upload and download smart contract |
\(DDI\) | BIM drawing design information |
\(DDI_{record}\) | BIM drawing design information record |
\(DDI\_C_{k}\) | BIM drawing design information related smart contracts, \(DDI\_C_{upload}\), \(DDI\_C_{download}\) respectively indicate BIM drawing design information upload and download smart contract |
\(DFDI\) | BIM drawing fusion design information |
\(DFDI_{record}\) | BIM drawing fusion design information record |
\(DFDI\_C_{m}\) | The merged BIM drawing design information related smart contracts, \(DFDI\_C_{upload}\), \(DFDI\_C_{download}\) respectively indicate the merged BIM drawing design information upload and download smart contract |
\(H_{n}\) | Hash value, \(H_{D}\), \(H_{DDI}\), \(H_{DFDI}\) respectively indicate the hash value of BIM drawing content, \(DDI\) and \(DFDI\) |
\(Sig_{p}\) | Digital signature, \(Sig_{H\_D}\), \(Sig_{H\_DDI}\) respectively indicate the digital signature of \(H_{D}\) and \(H_{DDI}\) |
