Christoph Braun, Yanxiu Wuwang, Zhi Wang, Xuyang Hou and Tobias Käfer

The Third International Workshop on Semantics in Dataspaces, co-located with the Extended Semantic Web Conference, June 01, 2025, Portorož, Slovenia, Towards using the Solid Protocol for Data Transport in International Data Spaces (IDS)

Abstract:

With this paper, we contribute to the discussion of the conceptual relationship between the International Data Space (IDS) protocol and the Solid protocol. We propose that the Solid protocol can complement the IDS protocol as its data plane implementation. In an IDS’ data transport process, the actual data is served from Solid Pods under access control. We highlight four different modes of operations for exchanging datasets between two Solid Pods using respective IDS Connectors. Data exchange can be performed (a) through the IDS connectors or directly at the Solid Pods; and (b) by either pulling the data from the data provider or pushing the data to the data consumer. We explore, which access control mechanisms may apply, depending on the mode of operation. We demonstrate practicality with a proof-of-concept implementation