Subject: Re: [Bitcoin-development] A suggestion for reducing the size of the UTXO database

From: Raystonn <[email-masked]>
Date: Sat, 9 May 2015 12:43:55 -0700

If selecting older UTXOs gives higher priority for a lesser (or at least not greater) fee, that is an incentive for a rational user to use the older UTXOs.  Such policy needs to be defended or removed.  It doesn't support privacy or a reduction in UTXOs.

On 9 May 2015 12:33 pm, Jim Phillips <[email-masked]> wrote:

On Sat, May 9, 2015 at 2:25 PM, Raystonn <[email-masked]> wrote:

Lack of privacy is viral.  We shouldn't encourage policy in most wallets that discourages privacy.  It adversely affects privacy across the entire network.

How about this as a happy medium default policy: Rather than select UTXOs based solely on age and limiting the size of the transaction, we select as many UTXOs as possible from as few addresses as possible, prioritizing which addresses to use based on the number of UTXOs it contains (more being preferable) and how old those UTXOs are (in order to reduce the fee)?