Sorting outputs of a transaction in alphabetic order to protect privacy

Sorting outputs of a transaction in alphabetic order to protect privacy
2020-04-30 12:14 ` Pavol Rusnak
  
From: SatoshiSingh @ 2020-04-29  6:47 UTC (permalink / raw)
  To: bitcoin-dev

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Hi list. I've been a lurker for quite sometime and this is my first post.

The problem I'm addressing is that generally wallet devs construct the tx with the 2nd output being of the sender as change. This helps chain analysers to identity addresses and invade the users privacy.

I'm suggesting to sort the outputs in alphabetic order (or by pure random order) before broadcasting. This way the chain analyser cannot be sure which output is the change output and will improve privacy a little.

Thanks

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2020-04-29  6:47 [bitcoin-dev] Sorting outputs of a transaction in alphabetic order to protect privacy SatoshiSingh

  
From: Pavol Rusnak @ 2020-04-30 12:14 UTC (permalink / raw)
  To: SatoshiSingh, Bitcoin Protocol Discussion

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https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki

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Best Regards / S pozdravom,

Pavol "stick" Rusnak
CTO, SatoshiLabs

On Thu, Apr 30, 2020, 10:21 SatoshiSingh via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> wrote:

> Hi list. I've been a lurker for quite sometime and this is my first post.
>
> The problem I'm addressing is that generally wallet devs construct the tx
> with the 2nd output being of the sender as change. This helps chain
> analysers to identity addresses and invade the users privacy.
>
> I'm suggesting to sort the outputs in alphabetic order (or by pure random
> order) before broadcasting. This way the chain analyser cannot be sure
> which output is the change output and will improve privacy a little.
>
> Thanks_______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists•linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>

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