Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Z5zNM-00018g-70 for bitcoin-development@lists.sourceforge.net; Fri, 19 Jun 2015 16:42:44 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.192.172 as permitted sender) client-ip=209.85.192.172; envelope-from=elombrozo@gmail.com; helo=mail-pd0-f172.google.com; Received: from mail-pd0-f172.google.com ([209.85.192.172]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Z5zNL-00007Q-Bp for bitcoin-development@lists.sourceforge.net; Fri, 19 Jun 2015 16:42:44 +0000 Received: by pdjn11 with SMTP id n11so94223922pdj.0 for ; Fri, 19 Jun 2015 09:42:37 -0700 (PDT) X-Received: by 10.66.250.131 with SMTP id zc3mr33600041pac.136.1434732157713; Fri, 19 Jun 2015 09:42:37 -0700 (PDT) Received: from [192.168.1.102] (cpe-76-167-237-202.san.res.rr.com. [76.167.237.202]) by mx.google.com with ESMTPSA id ni1sm11747680pdb.32.2015.06.19.09.42.34 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 19 Jun 2015 09:42:36 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Content-Type: multipart/signed; boundary="Apple-Mail=_C8433300-F6CD-4ADA-A3C6-38680EA8D97D"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Pgp-Agent: GPGMail 2.5b6 From: Eric Lombrozo In-Reply-To: <1727885.UUNByX4Jyd@crushinator> Date: Fri, 19 Jun 2015 09:42:33 -0700 Message-Id: <83A7C606-B601-47D2-BE10-2A1412D97514@gmail.com> References: <20150619103959.GA32315@savin.petertodd.org> <04CE3756-B032-464C-8FBD-7ACDD1A3197D@gmail.com> <812d8353e66637ec182da31bc0a9aac1@riseup.net> <1727885.UUNByX4Jyd@crushinator> To: Matt Whitlock X-Mailer: Apple Mail (2.2098) X-Spam-Score: -1.2 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (elombrozo[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.4 AWL AWL: Adjusted score from AWL reputation of From: address X-Headers-End: 1Z5zNL-00007Q-Bp Cc: Bitcoin Dev , justusranvier@riseup.net Subject: Re: [Bitcoin-development] F2Pool has enabled full replace-by-fee X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jun 2015 16:42:44 -0000 --Apple-Mail=_C8433300-F6CD-4ADA-A3C6-38680EA8D97D Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 If we want a non-repudiation mechanism in the protocol, we should = explicitly define one rather than relying on =E2=80=9Cprima facie=E2=80=9D= assumptions. Otherwise, I would recommend not relying on the existence = of a signed transaction as proof of intent to pay=E2=80=A6 > On Jun 19, 2015, at 9:36 AM, Matt Whitlock = wrote: >=20 > On Friday, 19 June 2015, at 3:53 pm, justusranvier@riseup.net wrote: >> I'd also like to note that "prima facie" doesn't mean "always", it = means >> that "the default assumption, unless proven otherwise." >=20 > Why would you automatically assume fraud by default? Shouldn't the = null hypothesis be the default? Without any information one way or = another, you ought to make *no assumption* about the fraudulence or = non-fraudulence of any given double-spend. --Apple-Mail=_C8433300-F6CD-4ADA-A3C6-38680EA8D97D 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 - https://gpgtools.org iQIcBAEBCgAGBQJVhEZ5AAoJEJNAI64YFENUm/UQAKoLMq87ywlMJDyni/HqLcDh UTgY4fSRdK+wYSIWI1rNzV1QIvetUrjwjeXVbpK6sF6iRCS0wHCHqT9b+nJby/Yq dzIsOrBaM0+OpCaYvwbhXV1BQd6sr7q9cNYFaLbElG8/z2ROqW6b5HzVF+X09BAY 5/ngluXP8akFDaAQqJbs5KbdQwZEys+jJYauFEyqfrGO8FfMN53X4LFIt7OytNNC dk4VkSWR4azVUED2NfQt5C8EHVNdhGjnf+266cLR4PsIfXwyNMXyeUgN6f93/9Xn XdnesoX+ZD+m8V6iy28Pd3YLRKW94RdjYx7Py/d8j8o/THihP/iduMkH7jwGAg96 e0TsANCQf3ckGF+QwKbxHXb1dcWH4eHhTzeBssVzxamluRW3IkjFZOInrjmHEi9p fRQUlsG2FRbEoHJ3UMwebL7sp/z+8PMHC9iG+ozhH7jxyJAsr3kihUkRIyOwznYb m3IbYVsIr5S4TUWZ+6wpwACW8rffLLoqmmX4OBgyBaidQpn6XPDer4qw8zyFoE5g 7eZypsLQ7Pi8tjuvbEDMgk+/42IKw2XtGdiiKZuz6Pe36xfvQja0k6VJP//JOnL1 bTmNOIp1Gd+zuP32+dN/cmsW/yaUZ6b/fJlVpN1mxcFvdZj1TYeLARAx1YRnQOhx c2yZ+IjwdHmy8oIwtSpo =jk6y -----END PGP SIGNATURE----- --Apple-Mail=_C8433300-F6CD-4ADA-A3C6-38680EA8D97D--