Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 9F4571156 for ; Sat, 12 Sep 2015 18:55:05 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com [209.85.212.182]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id DF40221D for ; Sat, 12 Sep 2015 18:55:04 +0000 (UTC) Received: by wiclk2 with SMTP id lk2so97118629wic.0 for ; Sat, 12 Sep 2015 11:55:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=/WHBQYl5ryvyAg4uzKZHIeRuoDiQvZeM+N2TQd0CiBc=; b=CcFBrVu7EqnpYB4NoxVF18MOo5rqD0QpQledeoCjsyUDOPrGKC8hOzt+6pNTkTDOcL koCqSW0dQRvsaMhuJGrd2DEUQnJLBQuWD42gxbeKLdMVxZwzXfdHc5IxLQh5F995m1wF PVbGtZM3cwueaRVf/SkzjJOSIBFagen/eAMrpy55wAirBso7xIoX+r5WKuoZ83WjBb/O N3hQpq/KXT+64R1tzlnD2yI6P/Zf6Brh4PGj4dl2qeVOnuQnP2msBe5Xjcv58J5kGfY+ VaGssdFJx6VCJq4R55LjuDjZtdZf7zFeRvMwV1CgCphy0HG53oeDYspZHx5QXVXuP8RI dgQw== MIME-Version: 1.0 X-Received: by 10.180.76.232 with SMTP id n8mr9136739wiw.72.1442084103374; Sat, 12 Sep 2015 11:55:03 -0700 (PDT) Sender: dscotese@gmail.com Received: by 10.27.211.132 with HTTP; Sat, 12 Sep 2015 11:55:03 -0700 (PDT) In-Reply-To: References: Date: Sat, 12 Sep 2015 11:55:03 -0700 X-Google-Sender-Auth: -bDRi0S0HktBS6WroV-23O3wZiI Message-ID: From: Dave Scotese To: Vincent Truong Content-Type: multipart/alternative; boundary=f46d043893f9b7cda7051f915e1a X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Bitcoin Dev Subject: Re: [bitcoin-dev] Bitcoin Days Destroyed as block selection heuristic X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Sep 2015 18:55:05 -0000 --f46d043893f9b7cda7051f915e1a Content-Type: text/plain; charset=UTF-8 > > From the Bitcoin wiki page on transaction fees > : > > Transaction priority is calculated as a value-weighted sum of input age, > divided by transaction size in bytes: priority = > sum(input_value_in_base_units * input_age)/size_in_bytes > If I read that correctly, that is directly proportional to BTCDD, so whatever effect concerns you has already been built into the code. On Fri, Sep 11, 2015 at 3:21 PM, Vincent Truong < vincent.truong@procabiak.com> wrote: > Would this alter the way txns will be prioritised in order to try to win? > You would always pick txns with the best BTCDD to maximize your chances of > being the block to build on. > > I see this as potentially being a bad outcome for bitcoin's fungibility. > --f46d043893f9b7cda7051f915e1a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

From = the Bitcoin wiki page on transaction fees:

Transaction priority is calculated as a value-weighted sum of input age, divided by transaction size in bytes: priority =3D sum(input_value_i= n_base_units * input_age)/size_in_bytes

If I read that correctly, tha= t is directly proportional to BTCDD, so whatever effect concerns you has al= ready been built into the code.

On Fri, Sep 11, 20= 15 at 3:21 PM, Vincent Truong <vincent.truong@procabiak.com= > wrote:

Would this alter the way txns will be prioritised in order to t= ry to win? You would always pick txns with the best BTCDD to maximize your = chances of being the block to build on.

I see this as potentially being a bad outcome for bitcoin= 9;s fungibility.


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