On Wed, Feb 04, 2015 at 03:23:23PM +0100, Isidor Zeuner wrote:
> Hi there,
> traditionally, the Bitcoin client strives to hide which output
> addresses are change addresses going back to the payer. However,
> especially with today's dynamically calculated miner fees, this
> may often be ineffective:
> A user sending a payment using the Bitcoin client will usually enter
> the payment amount only up to the number of digits which are
> considered to be significant enough. So, the least significant digits
> will often be zero for the payment. With dynamically calculated miner
> fees, this will often not be the case for the change amount, making it
> easy for an observer to classify the output addresses.
> A possible approach to handle this issue would be to add a randomized
> offset amount to the payment amount. This offset amount can be small
> in comparison to the payment amount.
> Any thoughts?

Have you looked at Armory? IIRC they do this kind of stuff.


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