We mention this patch, in an updated version of our work (currently under review, and not yet online). This patch goes a substantial way to mitigating one of t

We mention this patch, in an updated version of our work (currently under review, and not yet online). This patch goes a substantial way to mitigating one of the big issues we discuss; the issue is that, in the protocol, separate balances, when used as inputs to the same transaction, are revealed to be controlled by the same individual. As the official client does not allow balances to be selected individually, many of the addresses within a wallet end up being revealed to be controlled by the same individual user, which users do not expect; this patch goes a long way towards fixing that. I still would not assume it is sufficient to guarantee anonymity, with Bitcoin. There may be other forms of information leakage that allow accounts be linked, or linked with a certain degree of confidence, but the fact that it shows key linking to users, will go a long way towards helping users understand that they may have linked accounts without meaning to.