From mboxrd@z Thu Jan 1 00:00:00 1970 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 ) id 1UPZsH-0007F4-H4 for bitcoin-development@lists.sourceforge.net; Tue, 09 Apr 2013 14:50:17 +0000 X-ACL-Warn: Received: from mail-vc0-f178.google.com ([209.85.220.178]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1UPZsF-00020W-SN for bitcoin-development@lists.sourceforge.net; Tue, 09 Apr 2013 14:50:17 +0000 Received: by mail-vc0-f178.google.com with SMTP id hv10so1788541vcb.23 for ; Tue, 09 Apr 2013 07:50:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:x-received:x-originating-ip:in-reply-to:references :date:message-id:subject:from:to:cc:content-type:x-gm-message-state; bh=1kkd0joQ80+CKBuj/bn2cuQKiiBChwjUw501EMl0Df8=; b=Kxl5vgBBVKDy127REwLcv8Zh/dyDh35Qw2X21YsyrdWyd953NPasmRJ5MQOQ4EH7fx Z2O3BDEo6xnJWf9h+FMoAxSkcjMcmbczUrD4LXkfA7Zd9gMsbk/m22IMUt4r8rPhC6TI Wm1/6QZYMXKEeXV3oVbNTQCUNmTyDLGPGbr6hps7kOI06iFygVyQoTTUS8MFm7cr9MZV rXg4LwLLiFoYWEHTllNf9MzXFwbHouWtlM7A87tkP5pbT48JN60iWhHl1s6VjEBQbmH8 wbX5UWDqSLznq35JV0ibSjR+71j8XOtTVZyzjbIOR+XTFbwkg/uSZJ2JETULHl9NdOk4 VJxA== MIME-Version: 1.0 X-Received: by 10.220.119.200 with SMTP id a8mr19444047vcr.38.1365519010174; Tue, 09 Apr 2013 07:50:10 -0700 (PDT) Received: by 10.58.169.109 with HTTP; Tue, 9 Apr 2013 07:50:10 -0700 (PDT) X-Originating-IP: [99.43.178.25] In-Reply-To: References: Date: Tue, 9 Apr 2013 10:50:10 -0400 Message-ID: From: Jeff Garzik To: Mike Hearn Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQmLCkH/sZRa2iABxlkSqY7CLAS/B82RG997oMTw9A/bipdRYcN9LhSeLVQvmdSg86dG77Js X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. X-Headers-End: 1UPZsF-00020W-SN Cc: Bitcoin Development Subject: Re: [Bitcoin-development] On-going data spam 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: Tue, 09 Apr 2013 14:50:17 -0000 Well, I'm not fundamentally opposed to a blacklist, but it would have to be done in a VERY open manner. I do think the community would agree that storing big data transactions is not the primary purpose of bitcoin. However, there should be some metrics and heuristics that take care of this problem. Notably the dev consensus (sans you, Mike :)) seems to be that uneconomical outputs should be made non-standard. Here is one approach: Block uneconomic UTXO creation https://github.com/bitcoin/bitcoin/pull/2351 I would like to see at least a stopgap solution to data spam in 0.8.2, as it is a clear and present problem. -- Jeff Garzik exMULTI, Inc. jgarzik@exmulti.com