Return-Path: Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 915BEC0032 for ; Thu, 3 Aug 2023 11:42:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 72F6F41E45 for ; Thu, 3 Aug 2023 11:42:54 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 72F6F41E45 Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm3 header.b=OJQeF+Bp X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -2.6 X-Spam-Level: X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ELCO-joD3dMl for ; Thu, 3 Aug 2023 11:42:49 +0000 (UTC) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) by smtp4.osuosl.org (Postfix) with ESMTPS id 7178341D93 for ; Thu, 3 Aug 2023 11:42:49 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 7178341D93 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 96AD05C0004 for ; Thu, 3 Aug 2023 07:42:46 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Thu, 03 Aug 2023 07:42:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:message-id :mime-version:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1691062966; x=1691149366; bh=iNPgb6TH2Gn3bpUWSgUke5aruVgHsAqB0tP cAJOEMB8=; b=OJQeF+Bp453jmAIl03JhkVKPCHrqLagc3AuJxmquGW6EN33/CJu eMmXwKq5moNiDspC0PxtzaGoJC6pLx+N+BLSQOYpWkwCFkmeZmL/PtWhPG7RcjdM A7rMRqD1G6lgPVyeJIWVsE/QlEeHbDyPvjB7HZpqsjal81UjM+sw3cSiDJbFxBZt ywgSV6T6QTRWZV5pNpBY/o7D6qEu0nzYybvuIZU4TkBQh3tMHmRtStL4o41EToiP 7kVBYuYyiAD3pybn+ftVi8FuR3I0bCn/M05wPexSb1x6DAN/9tkmU81P79wUHtqS 8iUAwG82JZpvdqyGM0agWBWW86BE1yxgBqg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedviedrkedvgdegudcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepfffhvffukfggtggusehgtderredttd dvnecuhfhrohhmpefrvghtvghrucfvohguugcuoehpvghtvgesphgvthgvrhhtohguugdr ohhrgheqnecuggftrfgrthhtvghrnheptdejhfekhfegjeevhfffheeiveefkedvffeitd ejjefghfdtleffveefhefgvdeinecuffhomhgrihhnpehgihhthhhusgdrtghomhdpsghi thgtohhinhhophhsrdhorhhgpdhpvghtvghrthhouggurdhorhhgnecuvehluhhsthgvrh fuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepphgvthgvsehpvghtvghrthho uggurdhorhhg X-ME-Proxy: Feedback-ID: i525146e8:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA for ; Thu, 3 Aug 2023 07:42:45 -0400 (EDT) Received: by localhost (Postfix, from userid 1000) id 9358C5F823; Thu, 3 Aug 2023 11:42:40 +0000 (UTC) Date: Thu, 3 Aug 2023 11:42:40 +0000 From: Peter Todd To: bitcoin-dev@lists.linuxfoundation.org Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="B+xQ0h5EKrs9LTiF" Content-Disposition: inline Subject: [bitcoin-dev] Pull-req to remove the arbitrary limits on OP_Return outputs X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Aug 2023 11:42:54 -0000 --B+xQ0h5EKrs9LTiF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable https://github.com/bitcoin/bitcoin/pull/28130 Sjors Provoost suggested that I email this mailing list as notice of my int= ent to get a pull-req merged that would remove the arbitrary 80-byte, 1 output / tx, standardness restrictions on OP_Return outputs. His rationale was that removing these standardness restrictions could potentially open up addition= al transaction pinning(1) vectors. Since this is a potential problem with any relaxation of standardness rules, I don't consider this to be an important concern. But consider this email your notice. At least some miners appear to be mining non-bitcoin-core-standard transactions. So with respect to the hash power of those miners these pinni= ng vectors may in fact exist already. # References 1) https://bitcoinops.org/en/topics/transaction-pinning/ --=20 https://petertodd.org 'peter'[:-1]@petertodd.org --B+xQ0h5EKrs9LTiF Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0RcYcKRzsEwFZ3N5Lly11TVRLzcFAmTLkqMACgkQLly11TVR LzeQQw//UyKHulShe6Uqo+5iPqLf/hxsnarvyZNhKlnzllCyFQVkHEnbKf88NN+O QsolIuH3VA2qQSvefR7QytCcaAHl9zd7no2iiB/TE65gykJI7xGE81AJLqL9Iqso kA6Z2fw4XlmvbNwpZoifRjtE1BcV0egs+kI3i1WwmPX2mZNwyl7/TQZ3P0NWjYGI IDlJkH4S9M1ql48fRFEnhKu2ZLNcR1s+SOApLEu6uDIAlZ17Xo9P5SON51fZMIfG 4papWugbhV8PDKe4sNoNpzkyV9JsBu3fUMl70b0rKNAWtl1/bVD86zaocgM7tGXD EKbDQetMLZoVv1I/X22kAfvqDyiVdzwEMtvGsC7gaQj3t0qSHtHx5zyUQ+90jnB6 Li4+pSOmVU18aRhUbnM+PK3P4LA+GeGZkfEdnVfs7HORA95Vh/3jzw3anu5jBheQ 92I/j/m67OgN2BuF7a4yEPmLwremoEwYB+xG4qSpHZmoHfs50ZKQ+rCd+003fs8n bab/H5ToKsLx4uUuGFvGTCrBCExfgv+IXsxzj+H18o0kx/PDmg7+EqLoDuISsWVA iHevsALpu6rsbNBEuW+3KJaXfNvfeBth+dSc9tS2rJJs6G3lgLSB1rYKEk+tvtfC Uco3yVGft5KY5hYCgbdkegS/I5Jb29bfSsjS0Hrb3x4dcWaOVZI= =0ZFa -----END PGP SIGNATURE----- --B+xQ0h5EKrs9LTiF--