An international standard, GS1 EPCIS, has given data transparency on supply chains and logistics and taken a new turn in the era of the Internet of Things by ratifying the major release of v2.0 in July 2022 with the official support for sensor data and Semantic Web. Oliot EPCIS is an open-source Web information system pursuing full compliance with the data format and service interface requirements ratified in the standard. The paper presents challenges towards a highly scalable EPCIS system and how the proposed system resolves the challenges. We share the quantitative and qualitative evaluation compared to existing open sources.