Subject: Re: [bitcoin-dev] feature: Enhance privacy by change obfuscation

From: Damian Williamson <[email-masked]>
Date: Sun, 1 Apr 2018 14:37:13 +0000

I note that Electrum v3.0.6 has an option to use multiple change addresses. It is off by default.

Regards,

Damian Williamson

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From: Eric Voskuil <[email-masked]>
Sent: Monday, 19 March 2018 5:59:28 AM
To: Evan Klitzke; Bitcoin Protocol Discussion
Cc: Damian Williamson
Subject: Re: [bitcoin-dev] feature: Enhance privacy by change obfuscation

> This would be really expensive for the network due to the bloat in UTXO size, a cost everyone has to pay for.

Without commenting on the merits of this proposal, I’d just like to correct this common misperception. There is no necessary additional cost to the network from the count of unspent outputs. This perception arises from an implementation detail of particular node software. There is no requirement for redundant indexing of unspent outputs.

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