This book constitutes the refereed conference proceedings of the 12th International Workshop on
Data Privacy Management DPM 2017 on conjunction with the 22nd European Symposium on Research
in computer Security ESORICS 2017 and the First International Workshop on Cryprocurrencies and
Blockchain Technology (CBT 2017) held in Oslo Norway in September 2017. The DPM Workshop
received 51 submissions from which 16 full papers were selected for presentation. The papers
focus on challenging problems such as translation of high-level buiness goals into system level
privacy policies administration of sensitive identifiers data integration and privacy
engineering. From the CBT Workshop six full papers and four short papers out of 27 submissions
are included. The selected papers cover aspects of identity management smart contracts soft-
and hardforks proof-of-works and proof of stake as well as on network layer aspects and the
application of blockchain technology for secure connect event ticketing.
