[Bitcoin-development] determining change addresses using the least significant digits

Jeff Garzik jgarzik at bitpay.com
Fri Feb 6 15:08:50 UTC 2015


Yes.  You can certainly add additional inputs and outputs -- and as such
you can increase privacy and defrag your wallet at the same time.


On Fri, Feb 6, 2015 at 2:11 AM, Wladimir <laanwj at gmail.com> wrote:

> On Wed, Feb 4, 2015 at 2:23 PM, Isidor Zeuner
> <cryptocurrencies at quidecco.de> wrote:
>
> > 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?
>
> Adding/subtracting a randomized offset amount is one way, but there
> have also been more sophisticated ideas to obfuscate the amount, e.g.
> by adding multiple change outputs or even distributing over multiple
> transactions (potentially coinjoined for further privacy).
>
> Mike Hearn had some ideas regarding obfuscation of payment amounts,
> which still make sense, and he wrote about them here:
> https://medium.com/@octskyward/merge-avoidance-7f95a386692f
>
> Wladimir
>
>
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-- 
Jeff Garzik
Bitcoin core developer and open source evangelist
BitPay, Inc.      https://bitpay.com/
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