Folks just wanted to share this with the Bitcoin community, this is an internal publication from Financial Services Agency, Japan and Mitsubishi Research Institute, Inc.
Titled:

Research on privacy and traceability of emerging blockchain based financial transactions

Link in English
https://www.fsa.go.jp/policy/bgin/ResearchPaper_MRI_en.pdf
Link in Japanese
https://www.fsa.go.jp/policy/bgin/ResearchPaper_MRI_ja.pdf


Enjoy - there is a lot there!