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| author | Tamas Blummer <tamas@bitsofproof.com> | 2014-04-09 19:50:03 +0200 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2014-04-09 17:50:07 +0000 |
| commit | 26e8e22e66ccae58a6ffc52650a300a02a696422 (patch) | |
| tree | 7b8b7e2fa4ef105c45226ea18ea04be7dab8f1f6 | |
| parent | e28c09d921e1e8b88a05b5b5a5653b1fee9c972c (diff) | |
| download | pi-bitcoindev-26e8e22e66ccae58a6ffc52650a300a02a696422.tar.gz pi-bitcoindev-26e8e22e66ccae58a6ffc52650a300a02a696422.zip | |
Re: [Bitcoin-development] Bitcoind-in-background mode for SPV wallets
| -rw-r--r-- | aa/bc073216dedc6d1f542b518f0f09a6d3728f8f | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/aa/bc073216dedc6d1f542b518f0f09a6d3728f8f b/aa/bc073216dedc6d1f542b518f0f09a6d3728f8f new file mode 100644 index 000000000..e0833dd30 --- /dev/null +++ b/aa/bc073216dedc6d1f542b518f0f09a6d3728f8f @@ -0,0 +1,219 @@ +Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] + helo=mx.sourceforge.net) + by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) + (envelope-from <tamas@bitsofproof.com>) id 1WXwdT-0006fP-RE + for bitcoin-development@lists.sourceforge.net; + Wed, 09 Apr 2014 17:50:07 +0000 +X-ACL-Warn: +Received: from wp059.webpack.hosteurope.de ([80.237.132.66]) + by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) + (Exim 4.76) id 1WXwdS-0007RH-4S + for bitcoin-development@lists.sourceforge.net; + Wed, 09 Apr 2014 17:50:07 +0000 +Received: from [37.143.74.116] (helo=[192.168.2.2]); authenticated + by wp059.webpack.hosteurope.de running ExIM with esmtpsa + (TLS1.0:RSA_AES_128_CBC_SHA1:16) + id 1WXwdL-0000vL-Kl; Wed, 09 Apr 2014 19:49:59 +0200 +Content-Type: multipart/signed; + boundary="Apple-Mail=_23FC7464-7F3D-4716-AAC2-CFCE1C92CD0F"; + protocol="application/pgp-signature"; micalg=pgp-sha1 +Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) +From: Tamas Blummer <tamas@bitsofproof.com> +In-Reply-To: <00b77560-d7ed-4ed4-a4e5-eb1f00467a06@email.android.com> +Date: Wed, 9 Apr 2014 19:50:03 +0200 +Message-Id: <0509477C-89F9-47C7-8820-29ACAD4A4A8E@bitsofproof.com> +References: <CA+s+GJCn9U2kmyMH6w3o+m99NCfO0ws=SccvGBYJv07WVuF=eA@mail.gmail.com> + <CAADm4BCEFCiOpNzUThPPHUamP2256izU8pwD3nerLCxks0wENA@mail.gmail.com> + <CAAS2fgTx40XSLhiygnJMrSbOC=iJ2YMVLNK7-AMt3ifvAHDZUA@mail.gmail.com> + <E9BAD633-3B6A-4A2C-AA06-DB591973DF66@bitsofproof.com> + <53456B99.9010207@monetize.io> + <B2FEC170-7214-4E46-8830-153995870B62@bitsofproof.com> + <00b77560-d7ed-4ed4-a4e5-eb1f00467a06@email.android.com> +To: Peter Todd <pete@petertodd.org> +X-Mailer: Apple Mail (2.1874) +X-bounce-key: webpack.hosteurope.de; tamas@bitsofproof.com; 1397065806; + 63070a6d; +X-Spam-Score: 1.0 (+) +X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. + See http://spamassassin.org/tag/ for more details. + 1.0 HTML_MESSAGE BODY: HTML included in message +X-Headers-End: 1WXwdS-0007RH-4S +Cc: bitcoin-development@lists.sourceforge.net +Subject: Re: [Bitcoin-development] Bitcoind-in-background mode for + SPV wallets +X-BeenThere: bitcoin-development@lists.sourceforge.net +X-Mailman-Version: 2.1.9 +Precedence: list +List-Id: <bitcoin-development.lists.sourceforge.net> +List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe> +List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development> +List-Post: <mailto:bitcoin-development@lists.sourceforge.net> +List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help> +List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe> +X-List-Received-Date: Wed, 09 Apr 2014 17:50:08 -0000 + + +--Apple-Mail=_23FC7464-7F3D-4716-AAC2-CFCE1C92CD0F +Content-Type: multipart/alternative; + boundary="Apple-Mail=_3904231C-30E5-4CED-858C-47877849F81A" + + +--Apple-Mail=_3904231C-30E5-4CED-858C-47877849F81A +Content-Transfer-Encoding: quoted-printable +Content-Type: text/plain; + charset=us-ascii + +Block header has to be available in SPV and also in an UTXO only storing = +core node, so why not serve it if bandwith allows. + +Serving any additional information like known peer adresses or known = +full blocks is certainly beneficial and should be offered if at hand. + +Regards, + +Tamas Blummer +http://bitsofproof.com + +On 09.04.2014, at 19:46, Peter Todd <pete@petertodd.org> wrote: + +> Signed PGP part +>=20 +>=20 +> On 9 April 2014 12:27:13 GMT-04:00, Tamas Blummer = +<tamas@bitsofproof.com> wrote: +> >A border router that is not able to serve blocks is still protecting +> >consensus rules, that SPVs do not. +> >If the network would only consist of SPV nodes only then e.g. a +> >majority coalition of miner could increase their reward at will. +> > +> >Archives need a different solution. +>=20 +> Any collective group that has a majority of hashing power will have no = +major issues running enough nodes that follow their rules to make SPV = +insecure anyway. +>=20 +> There's no good reason not to have SPV security nodes distribute block = +chain data, particularly block headers. It helps provide redundancy in = +the network topology and helps provide more resources for full nodes to = +sync up faster. For instance in a network with a large number of partial = +UTXO set nodes if those nodes are forwarding block data to each other = +they can get enough data to become fully fledged full nodes without = +putting all the load on the existing full nodes. This is a good thing. +>=20 +>=20 +>=20 + + +--Apple-Mail=_3904231C-30E5-4CED-858C-47877849F81A +Content-Transfer-Encoding: quoted-printable +Content-Type: text/html; + charset=us-ascii + +<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = +charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = +-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Block = +header has to be available in SPV and also in an UTXO only storing core = +node, so why not serve it if bandwith allows.<br><div = +apple-content-edited=3D"true"><br></div><div = +apple-content-edited=3D"true">Serving any additional information like = +known peer adresses or known full blocks is certainly beneficial and = +should be offered if at hand.</div><div apple-content-edited=3D"true"><br = +style=3D"color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = +font-style: normal; font-variant: normal; font-weight: normal; = +letter-spacing: normal; line-height: normal; text-align: -webkit-auto; = +text-indent: 0px; text-transform: none; white-space: normal; = +word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; widows: = +2;"><span style=3D"color: rgb(0, 0, 0); font-family: Helvetica; = +font-size: 12px; font-style: normal; font-variant: normal; font-weight: = +normal; letter-spacing: normal; line-height: normal; text-align: = +-webkit-auto; text-indent: 0px; text-transform: none; white-space: = +normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; = +widows: 2; float: none; display: inline !important;">Regards,</span><br = +style=3D"color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; = +font-style: normal; font-variant: normal; font-weight: normal; = +letter-spacing: normal; line-height: normal; text-align: -webkit-auto; = +text-indent: 0px; text-transform: none; white-space: normal; = +word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; widows: = +2;"><br style=3D"color: rgb(0, 0, 0); font-family: Helvetica; font-size: = +12px; font-style: normal; font-variant: normal; font-weight: normal; = +letter-spacing: normal; line-height: normal; text-align: -webkit-auto; = +text-indent: 0px; text-transform: none; white-space: normal; = +word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; widows: = +2;"><span style=3D"color: rgb(0, 0, 0); font-family: Helvetica; = +font-size: 12px; font-style: normal; font-variant: normal; font-weight: = +normal; letter-spacing: normal; line-height: normal; text-align: = +-webkit-auto; text-indent: 0px; text-transform: none; white-space: = +normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; = +widows: 2; float: none; display: inline !important;">Tamas = +Blummer</span><br style=3D"color: rgb(0, 0, 0); font-family: Helvetica; = +font-size: 12px; font-style: normal; font-variant: normal; font-weight: = +normal; letter-spacing: normal; line-height: normal; text-align: = +-webkit-auto; text-indent: 0px; text-transform: none; white-space: = +normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; = +widows: 2;"><span style=3D"color: rgb(0, 0, 0); font-family: Helvetica; = +font-size: 12px; font-style: normal; font-variant: normal; font-weight: = +normal; letter-spacing: normal; line-height: normal; orphans: auto; = +text-align: start; text-indent: 0px; text-transform: none; white-space: = +normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: = +0px;"><span style=3D"color: rgb(0, 0, 0); font-family: Helvetica; = +font-size: 12px; font-style: normal; font-variant: normal; font-weight: = +normal; letter-spacing: normal; line-height: normal; text-align: = +-webkit-auto; text-indent: 0px; text-transform: none; white-space: = +normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; = +widows: 2; float: none; display: inline !important;"><a = +href=3D"http://bitsofproof.com">http://bitsofproof.com</a></span> +</span></div> +<br><div><div>On 09.04.2014, at 19:46, Peter Todd <<a = +href=3D"mailto:pete@petertodd.org">pete@petertodd.org</a>> = +wrote:</div><br class=3D"Apple-interchange-newline"><blockquote = +type=3D"cite"><fieldset style=3D"padding-top:10px; border:0px; border: = +3px solid #CCC; padding-left: 20px;"><legend = +style=3D"font-weight:bold">Signed PGP part</legend><div = +style=3D"padding-left:3px;"><br><br>On 9 April 2014 12:27:13 GMT-04:00, = +Tamas Blummer <<a = +href=3D"mailto:tamas@bitsofproof.com">tamas@bitsofproof.com</a>> = +wrote:<br>>A border router that is not able to serve blocks is still = +protecting<br>>consensus rules, that SPVs do not.<br>>If the = +network would only consist of SPV nodes only then e.g. a<br>>majority = +coalition of miner could increase their reward at = +will.<br>><br>>Archives need a different solution.<br><br>Any = +collective group that has a majority of hashing power will have no major = +issues running enough nodes that follow their rules to make SPV insecure = +anyway.<br><br>There's no good reason not to have SPV security nodes = +distribute block chain data, particularly block headers. It helps = +provide redundancy in the network topology and helps provide more = +resources for full nodes to sync up faster. For instance in a network = +with a large number of partial UTXO set nodes if those nodes are = +forwarding block data to each other they can get enough data to become = +fully fledged full nodes without putting all the load on the existing = +full nodes.<span class=3D"Apple-converted-space"> </span> This is a = +good = +thing.</div></fieldset><br><br><br></blockquote></div><br></body></html>= + +--Apple-Mail=_3904231C-30E5-4CED-858C-47877849F81A-- + +--Apple-Mail=_23FC7464-7F3D-4716-AAC2-CFCE1C92CD0F +Content-Transfer-Encoding: 7bit +Content-Disposition: attachment; + filename=signature.asc +Content-Type: application/pgp-signature; + name=signature.asc +Content-Description: Message signed with OpenPGP using GPGMail + +-----BEGIN PGP SIGNATURE----- +Comment: GPGTools - http://gpgtools.org + +iQEcBAEBAgAGBQJTRYhLAAoJEPZykcUXcTkcT5sIAKiPzOywyjtZqH1cmcckBezf +zqYmRfMNzY3Lh+H7Tm8eMhccK2UsaHMvrjMK7J5k80qVLKhC0a96O6oFBzUMpM3U +h5TV8kM4q0hi/SQ9gtPj/vFeC1xsbgyJSFWmfiJdOzUjWO5v2dLSgl9Dn+ZQU9Wb +JeJu9cNwqWsdG0xgEILdlLbhTlJ6+LTXRqCPZpC902OecaF0oTUG2A6CBatvqcfN +FN9nH/OHFxKeGCep66N+e01v2up3MN4IrT2jzPeREukGJrX0xMkht5kH9MX9rbC4 +B5DzAEu9xlEbWwd/0lN0+RV5sAIKp1vYREbiAlgC7px6Qn92p0Jk0GpAfIBLpy4= +=5UV9 +-----END PGP SIGNATURE----- + +--Apple-Mail=_23FC7464-7F3D-4716-AAC2-CFCE1C92CD0F-- + + |