In the highly competitive business environment, Supply chain (SC) disruption strongly impacted the manufacturing cost. The poor goods management and bottleneck have muddled the SC. It leads to cross-delivery, wastage of delivery time, burglary, quality and sometimes damages to the essential and precious goods. Only digitisation can be seen as an alternative to neutralise these obstacles from the procurement problems in SC. Security, immutable data, traceability, and transparency are the significant goal of the digital supply chain (DSC), which can only cut down the operational cost and are decisive factors for meeting the customer demand in real-time without disrupting the smooth flow of information. The rising concern towards cross-delivery, delivery delay time, hacking of data, transparency, intermediated and burglary have forced us to integrate blockchain technology (BCT) with the traditional supply chain. This work presents the DSC’s integrated mathematical model, transforming traditional procurement problems into digital procurement. This research paper optimises the procurement cost after adopting and integrating the blockchain (an infancy technology). The proposed model is a Mixed Integer-Linear programming mathematical model that incorporates the block development cost while purchasing, ordering, transporting and holding processes. These four processes are the susceptible stages where leakage can be reported; therefore, an integrated MILP model is proposed to eradicate the leakage from the system and endorse transparency, traceability, and immutable information for DSC. Finally, the model is authenticated and verified over the three different scenarios illustration using the LINGO 10.0 software for digital procurement problems based on the randomly generated datasets.

在竞争激烈的商业环境中，供应链 (SC) 中断严重影响了制造成本。糟糕的货物管理和瓶颈使SC感到困惑。它会导致交叉交付、浪费交付时间、盗窃、质量，有时还会损坏必需品和珍贵商品。只有数字化可以被视为消除这些来自 SC 采购问题的障碍的替代方案。安全性、不可变数据、可追溯性和透明度是数字供应链（DSC）的重要目标，它只能降低运营成本，是实时满足客户需求而不破坏信息畅通的决定性因素. 对交叉交付、交付延迟时间、数据黑客攻击、透明度、中间商和入室盗窃迫使我们将区块链技术（BCT）与传统供应链相结合。这项工作展示了 DSC 的集成数学模型，将传统采购问题转化为数字采购。本研究论文优化了采用和集成区块链（一种初期技术）后的采购成本。所提出的模型是一个混合整数线性规划数学模型，它在购买、订购、运输和持有过程中结合了块开发成本。这四个过程是可以报告泄漏的易受影响的阶段；因此，提出了一个集成的 MILP 模型来消除系统的泄漏，并支持 DSC 的透明度、可追溯性和不可变信息。最后，