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From: Devrandom <c1.bitcoin@niftybox.net>
Date: Mon, 06 Nov 2017 23:38:20 +0000
Message-ID: <CAB0O3SXHyQhqoKtDZacWOUjzKp+3GimGABGToWrvRQgcBRE6EA@mail.gmail.com>
To: Peter Todd <pete@petertodd.org>
Content-Type: multipart/alternative; boundary="001a1139e258b2a897055d58f38c"
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Introducing a POW through a soft-fork
Precedence: list

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>
> 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.

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<div dir=3D"ltr"><div class=3D"gmail_quote"><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
<div dir=3D"ltr"><div class=3D"gmail_quote"><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
Note how you&#39;re basically proposing for the block interval to be decrea=
sed,<br>
which has security implications due to increased orphan rates.<br></blockqu=
ote><div><br></div></div></div><div dir=3D"ltr"><div class=3D"gmail_quote">=
<div>Note that the total transaction rate and block size don&#39;t material=
ly change, so I don&#39;t</div><div>see why the orphan rate will change.=C2=
=A0 Normal blocks are constrained to have</div><div>all of the txs of the a=
ux blocks, so propagation time should stay the same.=C2=A0 Am I missing</di=
v><div>something?</div></div></div></blockquote><div><br></div><div>Ah, yes=
, I&#39;m missing that the expected time to find each type of block is halv=
ed, so the orphan rate doubles.</div><div><br></div></div></div>

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