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| author | Peter Todd <pete@petertodd.org> | 2015-08-27 16:19:13 -0700 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2015-08-27 23:19:24 +0000 |
| commit | 7e31e0f4db1cdd23668d30c1d083d3d4c1bb25d4 (patch) | |
| tree | 969a6182c5691f4a6259dee7aff96a1d6d529979 | |
| parent | b0815b9352f58f81fa36a727cfec674fe178ee38 (diff) | |
| download | pi-bitcoindev-7e31e0f4db1cdd23668d30c1d083d3d4c1bb25d4.tar.gz pi-bitcoindev-7e31e0f4db1cdd23668d30c1d083d3d4c1bb25d4.zip | |
Re: [bitcoin-dev] BIP: Using Median time-past as endpoint for locktime calculations
| -rw-r--r-- | dd/03d809f8da60b5dd25be6b75bd8971f5bea8e2 | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/dd/03d809f8da60b5dd25be6b75bd8971f5bea8e2 b/dd/03d809f8da60b5dd25be6b75bd8971f5bea8e2 new file mode 100644 index 000000000..2687a7545 --- /dev/null +++ b/dd/03d809f8da60b5dd25be6b75bd8971f5bea8e2 @@ -0,0 +1,135 @@ +Return-Path: <pete@petertodd.org> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id D4823F54 + for <bitcoin-dev@lists.linuxfoundation.org>; + Thu, 27 Aug 2015 23:19:24 +0000 (UTC) +X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 +Received: from outmail149055.authsmtp.co.uk (outmail149055.authsmtp.co.uk + [62.13.149.55]) + by smtp1.linuxfoundation.org (Postfix) with ESMTP id 3CB041A5 + for <bitcoin-dev@lists.linuxfoundation.org>; + Thu, 27 Aug 2015 23:19:24 +0000 (UTC) +Received: from mail-c235.authsmtp.com (mail-c235.authsmtp.com [62.13.128.235]) + by punt17.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t7RNJJ9V031684; + Fri, 28 Aug 2015 00:19:19 +0100 (BST) +Received: from muck (us1x.mullvad.net [199.241.145.219]) + (authenticated bits=128) + by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t7RNJDUT051965 + (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); + Fri, 28 Aug 2015 00:19:17 +0100 (BST) +Date: Thu, 27 Aug 2015 16:19:13 -0700 +From: Peter Todd <pete@petertodd.org> +To: Btc Drak <btcdrak@gmail.com> +Message-ID: <20150827231913.GC4125@muck> +MIME-Version: 1.0 +Content-Type: multipart/signed; micalg=pgp-sha256; + protocol="application/pgp-signature"; boundary="qcHopEYAB45HaUaB" +Content-Disposition: inline +In-Reply-To: <CADJgMztcy33cW4=SOfsmANMFCU3Q7pcLqatG9JeJCgEXnpkD+g@mail.gmail.com> + <CADJgMzvfeka5WXyjz8oeTtKUSrfxWBGR7BMujJ-4LL2jrcUuZw@mail.gmail.com> +X-Server-Quench: 0ad80395-4d12-11e5-b398-002590a15da7 +X-AuthReport-Spam: If SPAM / abuse - report it at: + http://www.authsmtp.com/abuse +X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR + bgdMdAoUGUATAgsB AmMbW1ReUVR7WGo7 agNYcwdZY1RPWwB0 + UklAXVdaExppT1gG ZGBkJnwWdwBHcXh1 K0dmX3BbEkQrIU59 + QUdRCGlSZGV9aWFK VV0KdApcbQNKfBpM agF+USdcZitlM3Bw + LAUyIzs2PDMaJClL d0knDGpACXsQHzgz DzUPETQmGwUZRiA+ + agQvMUJUFV1ZP0M+ KVwgX05QPRgIaEVa GEpOHC5cKhEKTi4g EAdTQU8ZFiY1 +X-Authentic-SMTP: 61633532353630.1023:706 +X-AuthFastPath: 0 (Was 255) +X-AuthSMTP-Origin: 199.241.145.219/587 +X-AuthVirus-Status: No virus detected - but ensure you scan with your own + anti-virus system. +X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,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 <bitcoin-dev@lists.linuxfoundation.org> +Subject: Re: [bitcoin-dev] BIP: Using Median time-past as endpoint for + locktime calculations +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Development Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Thu, 27 Aug 2015 23:19:25 -0000 + + +--qcHopEYAB45HaUaB +Content-Type: text/plain; charset=us-ascii +Content-Disposition: inline +Content-Transfer-Encoding: quoted-printable + +On Thu, Aug 27, 2015 at 11:08:32PM +0100, Btc Drak wrote: +> This BIP was assigned number 113. +>=20 +> I have updated the text accordingly and added credits to Gregory Maxwell. +>=20 +> Please see the changes in the pull request: +> https://github.com/bitcoin/bips/pull/182 + +On Thu, Aug 27, 2015 at 11:11:10PM +0100, Btc Drak via bitcoin-dev wrote: +> I have changed BIPS 112 and 113 to reflect this amended deployment +> strategy. I'm beginning to think the issues created by Bitcoin XT are +> so serious it probably deserves converting OPs text into an +> informational BIP. + +I thought we had decided that the masking thing doesn't work as +intended? + +To recap, XT nodes are producing blocks with nVersion=3D0b001...111 + +You're suggesting that we apply a mask of ~0b001...111 then trigger the +soft-fork on nVersion >=3D 0b0...100 =3D=3D 4, with miners producing blocks= + with +nVersion=3D0b0...1000 + +That will work, but it still uses up a version bit. The reason why is +blocks with nVersion=3D0b001...000 - the intended deployment of the +nVersion bits proposal - will be rejected by the nVersion >=3D 4 rule, +hard-forking them off the network. In short, we have in fact "burnt" a +version bit unnecessarily. + +If you're going to accept hard-forking some people off the network, why +not just go with my stateless nVersion bits w/ time-expiration proposal +instead? The only case where it leads to a hard-fork is if a soft-fork +has been rejected by the time the upgrade deadline is reached. It's easy +to set this multiple years into the future, so I think in practice it +won't be a major issue for non-controversial soft-forks. + +Equally, spending the time to implement the original stateful nVersion +bits proposal is possible as well, though higher risk due to the extra +complexity of tracking soft-fork state. + +--=20 +'peter'[:-1]@petertodd.org +000000000000000008ba8215b2b644e33a98a762fd40710bc5e8c7f1b0e78375 + +--qcHopEYAB45HaUaB +Content-Type: application/pgp-signature; name="signature.asc" +Content-Description: Digital signature + +-----BEGIN PGP SIGNATURE----- + +iQGrBAEBCACVBQJV35ruXhSAAAAAABUAQGJsb2NraGFzaEBiaXRjb2luLm9yZzAw +MDAwMDAwMDAwMDAwMDAwOGJhODIxNWIyYjY0NGUzM2E5OGE3NjJmZDQwNzEwYmM1 +ZThjN2YxYjBlNzgzNzUvFIAAAAAAFQARcGthLWFkZHJlc3NAZ251cGcub3JncGV0 +ZUBwZXRlcnRvZC5vcmcACgkQwIXyHOf0udylVQf7BkMS0W0KFSKvTFViZYxxA9c5 +OK2nzQqsUDd1f06QgV/wcEE35dVeNfqZhydFf51dmIqWjvHEUsTvgCmKxFcLpUsa +w9dXK10y/diywNyLXEm3e1C5TaMz5GF99GiYgcAMd7SUDvpIFqQHhzQ3sfQTwKW+ +LEZr9OKmOCm7VsWPrxadpQCaAkNoiPk+OgJFUM9tOxWd876ZzvNoXjE24cXTBQzV +UTXUONMV+DNGD5lkYp14XjS7zg3uAsMB5sKaejJYp33r9YRmbstDjlbOJY6o8Of+ +Dh5wSsoUtsrcm53mUbrd3MsIhSKo3ly33gENNuep2LklgzPgXGXJ+I9wBt8Gtw== +=uzwL +-----END PGP SIGNATURE----- + +--qcHopEYAB45HaUaB-- + |