From: Richard Moore <me@ricmoo.com>
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Message-Id: <6D3AACE5-D6CD-4785-8A55-F6DF0B94D927@ricmoo.com>
Date: Fri, 10 Jul 2015 12:09:43 -0400
To: bitcoin-dev@lists.linuxfoundation.org
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Subject: [bitcoin-dev] Why not Child-Pays-For-Parent?
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Hey guys,

With all the recent congestion and discussion regarding FSS-RBF, I was =
wondering if there good reasons not to have CPFP as a default policy? Or =
is it?

I was also wondering, with CPFP, should the transaction fee be based on =
total transactions size, or the sum of each transaction=E2=80=99s =
required fee? For example, a third transaction C whose unconfirmed utxo =
from transaction B has an unconfirmed utxo in transaction A (all of =
A=E2=80=99s inputs are confirmed), with each A, B and C being ~300bytes, =
should C=E2=80=99s transaction fee be 0.0001 btc for the ~1kb it is =
about to commit to the blockchain, or 0.0003 btc for the 3 transactions =
it is going to commit.

I tried to test it out a few days ago, sending 0.0008 btc without any =
fee, then that utxo into another transaction w/ 0.0001 btc. It still =
hasn=E2=80=99t confirmed, which could be any of: a) CPFP doesn=E2=80=99t =
have enough hash power, b) the amounts are too small, c) the coins are =
too new, d) the fee should have actually been 0.0002 btc, e) the =
congestion is just too great; or some combination.

Just curious as whatnot=E2=80=A6

Thanks,
RicMoo

=
.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=C2=
=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=
=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8><(((=C2=BA>

Richard Moore ~ Founder
Genetic Mistakes Software inc.
phone: (778) 882-6125
email: ricmoo@geneticmistakes.com <mailto:ricmoo@geneticmistakes.com>
www: http://GeneticMistakes.com <http://geneticmistakes.com/>

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">Hey guys,</div><div class=3D""><br =
class=3D""></div><div class=3D"">With all the recent congestion and =
discussion regarding FSS-RBF, I was wondering if there good reasons not =
to have CPFP as a default policy? Or is it?</div><div class=3D""><br =
class=3D""></div><div class=3D"">I was also wondering, with CPFP, should =
the transaction fee be based on total transactions size, or the sum of =
each transaction=E2=80=99s required fee? For example, a third =
transaction C whose unconfirmed utxo from transaction B has an =
unconfirmed utxo in transaction A (all of A=E2=80=99s inputs are =
confirmed), with each A, B and C being ~300bytes, should C=E2=80=99s =
transaction fee be 0.0001 btc for the ~1kb it is about to commit to the =
blockchain, or 0.0003 btc for the 3 transactions it is going to =
commit.</div><div class=3D""><br class=3D""></div><div class=3D"">I =
tried to test it out a few days ago, sending 0.0008 btc without any fee, =
then that utxo into another transaction w/ 0.0001 btc. It still hasn=E2=80=
=99t confirmed, which could be any of: a) CPFP doesn=E2=80=99t have =
enough hash power, b) the amounts are too small, c) the coins are too =
new, d) the fee should have actually been 0.0002 btc, e) the congestion =
is just too great; or some combination.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Just curious as whatnot=E2=80=A6</div><di=
v class=3D""><br class=3D""></div><div class=3D"">Thanks,</div><div =
class=3D"">RicMoo</div><div class=3D""><br class=3D""></div><div =
apple-content-edited=3D"true" class=3D"">
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; =
font-variant: normal; font-weight: normal; letter-spacing: normal; =
line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; =
text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px;  =
">.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=
=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=
=B8=C2=B8.=C2=B7=C2=B4=C2=AF`=C2=B7.=C2=B8&gt;&lt;(((=C2=BA&gt;<br =
class=3D""><br class=3D"">Richard Moore ~ Founder<br class=3D"">Genetic =
Mistakes Software inc.<br class=3D"">phone: (778) 882-6125<br =
class=3D"">email:&nbsp;<a href=3D"mailto:ricmoo@geneticmistakes.com" =
class=3D"">ricmoo@geneticmistakes.com</a><br class=3D"">www:&nbsp;<a =
href=3D"http://GeneticMistakes.com/" =
class=3D"">http://GeneticMistakes.com</a></span>
</div>
<br class=3D""></body></html>=

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