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Den 22 jul 2015 17:51 skrev "Thomas Voegtlin via bitcoin-dev" <bitcoin-dev@lists.linuxfoundation.org>:
>
> Hello,
>
> Although Electrum clients connect to several servers in order to fetch
> block headers, they typically request address balances and address
> histories from a single server. This means that the chosen server knows
> that a given set of addresses belong to the same wallet. That is true
> even if Electrum is used over TOR.
>
> There have been various proposals to improve on that, but none of them
> really convinced me so far. One recurrent proposal has been to create
> subsets of wallet addresses, and to send them to separate servers. In my
> opinion, this does not really improve anonymity, because it requires
> trusting more servers.
>
> Here is an idea, inspired by TOR, on which I would like to have some
> feedback: We create an anonymous routing layer between Electrum servers
> and clients.

Why not look at something like Dissent? http://dedis.cs.yale.edu/dissent/

This protocol reduces the impact of Sybil attacks.