Description This dataset contains the supplementary materials supporting the empirical evaluation presented in the paper “Adoption of Blockchain for Decentralized Execution Agreements: Empirical Evidence of Usability and Acceptance.” Contents Appendix A – Participant invitation messages (developers and end users) Appendix B – Characterization of participating developers and external users Appendix C – Informed consent forms used in the study Appendix D – Participant characterization questionnaires Appendix E – Developer and end-user evaluation forms SEI Interface Prototype Demonstration (MP4) – Video demonstrating the prototype used in the usability evaluation