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http://dx.doi.org/10.9708/jksci.2021.26.12.159

Design and Implementation of a Blockchain System for Storing BIM Files in a Distributed Network Environment  

Seo, Jungwon (Dept. of Computer Science, Sogang University)
Ko, Deokyoon (Noncelab Inc.)
Park, Sooyong (Dept. of Computer Science, Sogang University)
Kim, Seong-jin (Dept. of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology(KICT))
Kim, Bum-Soo (Dept. of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology(KICT))
Kim, Do Young (Dept. of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology(KICT))
Abstract
Building Information Modeling (BIM) data is a digitized construction design by worldwide construction design stands rules. Some research are being conducted to utilize blockchain for safe sharing and trade of BIM data, but there is no way to store BIM data directly in the blockchain due to the size of BIM data and technical limitation of the blockchain. In this paper, we propose a method of storing BIM data by combining a distributed file system and a blockchain. We propose two network overlays for storing BIM data, and we also propose generating the Level of Detail (LOD)-based merkle tree for efficient verification of BIM data. In addition, this paper proposes a system design for distributed storage of BIM data by using blockchain besu client and IPFS client. Our system design has a result that the processing speed stably increased despite the increase in data size.
Keywords
Blockchain; BIM; Distributed File System; IPFS; Data Sharing;
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