The COVID-19 pandemic has caused a surge in the use of online delivery services, which rely on user-generated content to promote collaborative consumption. Although Online Food Delivery (OFD) is a popular delivery system in Bangladesh, it has yet to ensure item authenticity, especially with the increasing demand for lightweight commodity delivery services across the country. The authenticity of products, involvement of multiple parties, and fair exchange are all challenging aspects of coast-to-coast services. Therefore, it is necessary for the three entities involved in the supply chain transaction - Seller, Carrier, and Buyer - to establish at least two peer-to-peer operations to ensure reliability and efficiency. To address these limitations and meet consumer expectations, the study proposes a framework for a nationwide on-demand marketplace for lightweight commodity items and a delivery system. Furthermore, transaction details are stored in a Blockchain to ensure the transparency and reliability of the proposed system.

翻译：新冠肺炎疫情导致在线配送服务的使用激增，这些服务依赖用户生成内容来促进协同消费。尽管在线食品配送（OFD）在孟加拉国是一种流行的配送系统，但它尚未能确保商品的真实性，尤其是随着全国范围内对轻量级商品配送服务需求的日益增长。产品的真实性、多方参与以及公平交换都是跨区域服务面临的挑战。因此，供应链交易中涉及的三个实体——卖家、承运商和买家——需要建立至少两个点对点操作，以确保可靠性和效率。为解决这些局限并满足消费者期望，本研究提出一个全国性轻量级商品按需市场及配送系统的框架。此外，交易详情将存储在区块链中，以确保该系统的透明性和可靠性。