From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 56EE8C016F for ; Thu, 30 Apr 2020 12:21:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 07AC7231AB for ; Thu, 30 Apr 2020 12:21:42 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zruJPXEUYL65 for ; Thu, 30 Apr 2020 12:21:40 +0000 (UTC) X-Greylist: delayed 00:06:59 by SQLgrey-1.7.6 Received: from mail-oi1-f181.google.com (mail-oi1-f181.google.com [209.85.167.181]) by silver.osuosl.org (Postfix) with ESMTPS id BE305204E4 for ; Thu, 30 Apr 2020 12:21:40 +0000 (UTC) Received: by mail-oi1-f181.google.com with SMTP id r66so5024093oie.5 for ; Thu, 30 Apr 2020 05:21:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=satoshilabs.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=vJL4bDfwGc+/PYq2e8SEouTTxVu64+xyoXiSCn0K7bs=; b=SkzcXIJD648U+6z6TAOm7f6IuboDB/zw2+M3mlSvSrX4LRanKvwW6aCw3U9kOwz+B0 4pd1iB5Rp4VT1+q7et3/1hNpI3iBsa+Omxs1QQBvbfBXNdMv/QMK405+miRqsEnqorfA aFrfxnY2FkzKWA7C9gScpSWZs7nYeRRzqwsSE277TkdDQYEbQm8acijeIbztXEDKf1d6 F3GEgoXM/FBEk/ELkVmg1rMasfpcCITLsYLHBGjcGwDiO6/AyE3KVR1dMKIhe30Ic2Lh YMtjB9T0bXZGGkqesSU1Ct1rGztZW2feGiGIddAxGJsbjO5+JspdJEQOxCUQarYNEMQg 2dEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=vJL4bDfwGc+/PYq2e8SEouTTxVu64+xyoXiSCn0K7bs=; b=cD878MAHvw8OJR/w9f7yzoNdxb/5LPUnWyLTnKONqMQHy+SILcziKk8cH8XvetfYCs LYB6EKU+zaXOr6zWXVVpYJ4ey9vdZljXv5abJNYswrKYnDsJHG0Sz6ojNmbvAjr0qMpC TfqJvGWCsgIy0voxuai9Ku5dQNGnma8jWOAUhiESDf0NABAYVP/r8eGRrr8mnA4Y2wFm qzkbktdgChlBJKntGs8QbU5OVPyasAXLJSssJ93pDBdBlFVa/V8TyehoZa62HqS/Q8Hq RsOr3iPwVjq+SXtI1hqySGXkf1+YRotN1tUqe8p+6GyEBdmRd0FlonEAV5YmQkycpEZT Nf8g== X-Gm-Message-State: AGi0Pua0GcJ/MNY5RIqVmHCAxpzfWiqtT0ILk3S8wXF0+hr1iT/yS12R PIj/9Jr5wyHzPpufIg30tXX0aQGbrKuc2gmRo87jhLU4 X-Google-Smtp-Source: APiQypLHzrbww7F3c+ju4TX6fXZRMdZf3xiMQSlu3aiQJ/yatksOPP+6hpLwfT7n5NcYtDyZBSzzkCkGdJb2KA6RmCQ= X-Received: by 2002:aca:908:: with SMTP id 8mr1533128oij.170.1588248880468; Thu, 30 Apr 2020 05:14:40 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Pavol Rusnak Date: Thu, 30 Apr 2020 14:14:28 +0200 Message-ID: To: SatoshiSingh , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary="00000000000055ed5305a48102cb" Subject: Re: [bitcoin-dev] Sorting outputs of a transaction in alphabetic order to protect privacy X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Apr 2020 12:21:42 -0000 --00000000000055ed5305a48102cb Content-Type: text/plain; charset="UTF-8" https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki -- 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 > --00000000000055ed5305a48102cb Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
https://github.com/bitcoin/bips/blob/master/bip-0069.medi= awiki

--
Best Regards= / S pozdravom,

Pavol "stick" Rusnak
CTO, SatoshiLabs

On Thu, Apr 30, 2020, 10:21 SatoshiSingh via bitcoin-dev <bitcoin-dev@lists.linuxfound= ation.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 th= e tx with the 2nd output being of the sender as change. This helps chain an= alysers 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 out= put is the change output and will improve privacy a little.

Thanks__= _____________________________________________
bitcoin-dev mailing list
bitcoin-dev@lists.linuxfoundation.org
https://lists.linuxfoundati= on.org/mailman/listinfo/bitcoin-dev
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