Servitization business models can use performance-based contracts to consider 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. 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.

服务化业务模型可以使用基于绩效的合同来考虑整个生命周期成本，而不仅仅是生产成本。然而，由于绩效评估、问责制和财务概念方面的挑战，绩效合同的实际实施受到了限制。作为解决方案，本文提出将数字建筑孪生体与基于区块链的智能合约连接起来，以执行基于性能的数字支付。首先，我们将区块链与数字建筑双胞胎连接起来的技术架构概念化。数字建筑双胞胎实时存储和评估性能数据。区块链通过智能合约确保自动绩效评估和奖励的透明度和可信执行。下一个，我们通过西门子楼宇双平台将以太坊区块链与数字建筑模型和传感器相集成，证明了概念和技术架构的可行性。由此产生的原型是建筑环境中基于性能的智能合约的第一个全栈实现。