The taXchain project, a collaboration between Siemens, Henkel, and KrypC, leverages the Hyperledger Fabric blockchain to streamline EU tax form completion, particularly the Long Term Supplier Declaration (LTSD). By digitizing and securing tax processes, taXchain significantly reduces form completion costs and time, cutting expenses by 75% and processing times from days to minutes. The system allows for flexibility, scalability, and integration with existing systems like SAP, aiming to create a unified, efficient network for multiple companies and forms. Future goals include expanding membership and use cases, ultimately transforming tax processing from a cost burden to a profitable endeavor.

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