Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1TiuUt-0000Xa-Iq for bitcoin-development@lists.sourceforge.net; Wed, 12 Dec 2012 22:09:47 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.160.47 as permitted sender) client-ip=209.85.160.47; envelope-from=elombrozo@gmail.com; helo=mail-pb0-f47.google.com; Received: from mail-pb0-f47.google.com ([209.85.160.47]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1TiuUs-0000GH-JY for bitcoin-development@lists.sourceforge.net; Wed, 12 Dec 2012 22:09:47 +0000 Received: by mail-pb0-f47.google.com with SMTP id un1so908255pbc.34 for ; Wed, 12 Dec 2012 14:09:40 -0800 (PST) Received: by 10.69.0.8 with SMTP id au8mr6567195pbd.58.1355350180843; Wed, 12 Dec 2012 14:09:40 -0800 (PST) Received: from [192.168.1.100] (cpe-72-130-140-12.san.res.rr.com. [72.130.140.12]) by mx.google.com with ESMTPS id vx2sm16297226pbc.33.2012.12.12.14.09.39 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 12 Dec 2012 14:09:40 -0800 (PST) From: Eric Lombrozo Content-Type: multipart/alternative; boundary=Apple-Mail-98--914143623 Date: Wed, 12 Dec 2012 14:09:38 -0800 Message-Id: To: Bitcoin Dev Mime-Version: 1.0 (Apple Message framework v1085) X-Mailer: Apple Mail (2.1085) X-Spam-Score: -0.6 (/) 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 1.0 HTML_MESSAGE BODY: HTML included in message -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 X-Headers-End: 1TiuUs-0000GH-JY Subject: [Bitcoin-development] Zero-length scripts 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: Wed, 12 Dec 2012 22:09:47 -0000 --Apple-Mail-98--914143623 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I've noticed a few transactions that have zero-length input and/or = output scripts. There's a couple examples in block = 0000000000000159a27442ee8b7f9ffad0cd799b003eafe007de9fbb47bd6ce7: Txs: cdb553214a51ef8d4393b96a185ebbbc2c84b7014e9497fea8aec1ff990dae35, = af32bb06f12f2ae5fdb7face7cd272be67c923e86b7a66a76ded02d954c2f94d Is there ever a legitimate reason to create a transaction with a = zero-length script? Should the protocol even allow it? -Eric Lombrozo --Apple-Mail-98--914143623 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii I've = noticed a few transactions that have zero-length input and/or output = scripts. There's a couple examples in block 0000000000000159a27442ee8b7f9ffad0cd799b003eafe007de9fbb47bd6ce7: