Documenting the Execution of Semantically Modelled Inter-organisational Workflows on a Distributed Ledger

We present an approach for documenting the execution of inter-organisational workflows on a distributed ledger, with the possibility of adding selectively shared verifiable data to the workflow instances' documentation. On data level, we base our approach on semantic workflow and data modelling, augmented with hashing. As system components, we use a distributed ledger as consensus-based shared database for workflow documentation and data verification, and RESTful APIs for sharing data with different privacy and publicity requirements. We evaluate our approach using a load test based in a real-world logistics setting.