From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 59A3FBBE for ; Mon, 6 Nov 2017 23:38:32 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-qk0-f179.google.com (mail-qk0-f179.google.com [209.85.220.179]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id B03E9D4 for ; Mon, 6 Nov 2017 23:38:31 +0000 (UTC) Received: by mail-qk0-f179.google.com with SMTP id a142so4394351qkb.5 for ; Mon, 06 Nov 2017 15:38:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=niftybox-net.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=XMqtcZY7865qJd5GIz6LCUnvJnyyCQwzFuFO2IJUPyY=; b=s9hKGHxNf82SAj0zvXo33jn1tHaW/0XpXhDtzeoa3jDYdkAVtYFs85LlcSeaBDhl4J MuEodIwhXtr8NlKXqocbtpJe4glZSwSJjvgJd7cr4WdSsuMji+IdrrpShTktc567XtMd NGN+QoofGebodKupS/32F+kzgk27MKrDKSD7WkCB1Gu1+6kLWS0Vvi9RZwdgBGU9gCMg u3VJc0CtuCyLZF5F+W7SRMGZo/DSu6wVaC/mHp7xhhzmuaIMJIgwgJDo3iQPCfM9a1NB HGrKJ4SDmtt6acNRUSKWICnb9yOwWqHOfd5JQLtICMnhoBBRU1MYSRwAw7IvHYo6PyzZ qv/A== 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:cc; bh=XMqtcZY7865qJd5GIz6LCUnvJnyyCQwzFuFO2IJUPyY=; b=GL8nVSIuygVsM0h05eVjzo3DWAcZ+C7TYRBL2SEw3Vi8JrQWoG+Ar1qlY7I36Kc5Lw u6sUnG0eaol8JVPtlWGXhj/6vrg4xsmvBdbrEU47S3fCDcKZ8rI2Lmrew7Aes3wIazOZ XBeEedyHAi3iMJ1q7g9+uh3STvjrJ0Gi7zcGEgbJDdVX6nxd2fEZI8Ti4To4dBA9AUk2 6wtDhlWQTYDHK/YS0w9U2BfLDn5BlO5fWduZ0lQYmGTgjYTHPAiSB6FG7jkIrZCaPbRF Hl3qlh4WptKIRwo24I9h0d8CCgV2yqG0NBL64smyRjZK03/egkHPpoEon05XoCiPSpU7 aciQ== X-Gm-Message-State: AJaThX6+QAJEFR128ZMjH6UZbG4/6bTYW7erewmCTYamK+97Sr1LTV3o QhcAiVP7ZGklTQlDu54vPFoxr0WC4E00NBXr5IxEDKNA X-Google-Smtp-Source: ABhQp+TzxN5PETTHgifBF7/JOTjgy5Y14Z38Hgm20R7tjakjaHKyLdcARspL4n2quhmSL1YidIjD7SNAemqHyrdzgPo= X-Received: by 10.55.203.217 with SMTP id u86mr7835754qkl.98.1510011510622; Mon, 06 Nov 2017 15:38:30 -0800 (PST) MIME-Version: 1.0 References: <20171106195000.GA7245@fedora-23-dvm> In-Reply-To: From: Devrandom Date: Mon, 06 Nov 2017 23:38:20 +0000 Message-ID: To: Peter Todd Content-Type: multipart/alternative; boundary="001a1139e258b2a897055d58f38c" X-Spam-Status: No, score=0.5 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HTML_MESSAGE,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Mon, 06 Nov 2017 23:53:58 +0000 Cc: Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] Introducing a POW through a soft-fork X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Nov 2017 23:38:32 -0000 --001a1139e258b2a897055d58f38c Content-Type: text/plain; charset="UTF-8" > > Note how you're basically proposing for the block interval to be decreased, >> which has security implications due to increased orphan rates. >> > > Note that the total transaction rate and block size don't materially > change, so I don't > see why the orphan rate will change. Normal blocks are constrained to have > all of the txs of the aux blocks, so propagation time should stay the > same. Am I missing > something? > Ah, yes, I'm missing that the expected time to find each type of block is halved, so the orphan rate doubles. --001a1139e258b2a897055d58f38c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
=
= Note how you're basically proposing for the block interval to be decrea= sed,
which has security implications due to increased orphan rates.

=
Note that the total transaction rate and block size don't material= ly change, so I don't
see why the orphan rate will change.=C2= =A0 Normal blocks are constrained to have
all of the txs of the a= ux blocks, so propagation time should stay the same.=C2=A0 Am I missing
something?

Ah, yes= , I'm missing that the expected time to find each type of block is halv= ed, so the orphan rate doubles.

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