LAUSR

Digital twins (DT) have been proposed to support and enhance manufacturing processes of the industries. The outcome of adopting DT is so encouraging that it is hoped that more than 50% of the large industries will benefit from DT by the end of 2021. There are different narratives of researchers about DT. This paper presents DT as a novel six dimensional framework. Furthermore, we propose an efficient blockchain for DT, namely twinchain. The twin creation process is a multi-phase multidisciplinary process which urges for auditing, tracking, immutability and accountability. The blockchain technology is envisioned to help for attaining the said goals. Twinchain allows efficient management of DT data w.r.t storage, sharing and authenticity. Another salient feature is that all of the cryptographic schemes used in the construction of twinchain are quantum resilient. The paper also presents a framework for deployment of twinchain for manufacturing of a robot surgical machine.