### Rating (1--4): + 3: Weak Accept -- This paper may have flaws, but I would not argue against it at a major conference ### What did this paper do well? + Presenting interesting statistics showcasing the effectiveness of their work + Introducing new heuristic in tracking/correlating transactions ### Where did this paper fall short? + Some explanations of how bitcoin works may be simplified by an illustration or functions + The second heuristic is not fully robust over time, since bitcoin behaviors change + The explanation of the role of private key in physical bitcoin transaction is not clear. ### What did you learn from reading this paper? + The basics of Bitcoins and bitcoin network statistics + Idiom of use + The effect of popular services on anonymity + Types of transactions (aggregations, folding, splits, peeling) ### What questions do you have about the paper or the area? + How often a user (or identity) changes his/her certificate pair? (this is important because the tagging that the paper used is based on the key that participated in "tagged" transaction.) + Why the research team was not able to "tag" Eligius?
