Dear Dissemination Committee, We plan to submit a paper (draft attached) as a report to IACR ( https://www.iacr.org/) and arXiv (https://arxiv.org/). Later, we might submit the paper to a suitable conference. If accepted we would like to acknowledge the SPARTA project as it related to our work for T6.5. Please let us know if you have any objections or comments. Title: Privacy-Preserving Contact Tracing: current solutions and open questions Author: Qiang Tang Cheers Qiang (See attached file: ConTrack.pdf) Senior Researcher Luxembourg Institute of Science and Technology & Adjunct Professor East China Normal University, Shanghai, China Website: http://www.tangqiang.eu/