Digital Building Twins and Blockchain for Performance-Based (Smart) Contracts
arxiv(2021)
摘要
Performance contracts used for servitized business models enable
consideration of overall life-cycle costs rather than just production costs.
However, practical implementation of performance contracts has been limited due
to challenges with performance evaluation, accountability, and financial
concepts. As a solution, this paper proposes the connection of the digital
building twin with blockchain-based smart contracts to execute
performance-based digital payments. First, we conceptualize a technical
architecture to connect blockchain to digital building twins. The digital
building twin stores and evaluates performance data in real-time while the
blockchain ensures transparency and trusted execution of automatic performance
evaluation and rewards through smart contracts. Next, we demonstrate the
feasibility of both the concept and technical architecture by integrating the
Ethereum blockchain with digital building models and sensors via the Siemens
building twin platform. The resulting prototype is the first full-stack
implementation of a performance-based smart contract in the built environment.
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