From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B8E4BB08 for ; Thu, 7 Sep 2017 01:29:56 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-qt0-f176.google.com (mail-qt0-f176.google.com [209.85.216.176]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 610C846D for ; Thu, 7 Sep 2017 01:29:56 +0000 (UTC) Received: by mail-qt0-f176.google.com with SMTP id q8so19919344qtb.5 for ; Wed, 06 Sep 2017 18:29:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:reply-to:in-reply-to:references:from:date:message-id :subject:to:cc:content-transfer-encoding; bh=mhPXG9q8CUHrD8eTF/Oshg6JyICOxdalniXO6CSoW+g=; b=QGnLsss7sNMtN1oqC2cpuVtik/fqSwvyHSpy5CB/g4Sx4bNzIvSMnfIWsFBQhdxi0k ZO25n2SLYx4HWqQkkIgHXkG85lIilNCiN2At5S6yeum8k663NcPmoHuqdJvIk6uOSMf7 XHs7POZxjfyzfEeTM7I5QP+w370Dxpwp7HUpdjLrcQNIezK7lOcPs8YIubDGePnKWggR W9UJgTemWyJQmOmjMy/kDdmtwTz4N3STNFf3BNj84BKm47iYmPUxpJL3bbNVYHKx6cvW MVMlOWjiclB9NSdmccDc2tRZeJVYJLy0+HNjhj/M3Lg0pAhgA9X0eInttLMMMetiK633 87UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:reply-to:in-reply-to:references :from:date:message-id:subject:to:cc:content-transfer-encoding; bh=mhPXG9q8CUHrD8eTF/Oshg6JyICOxdalniXO6CSoW+g=; b=gxbVsQ+cgbRW2BX8ut5F+ZH81gXXQDsj7XAZuAjZLFK3pXrdr1q+lEYn83jgbXl/Tj 3plw3nLmmBhZ3eWoy3RqUmMT7+7XBq48T7sTbHJ0lZK9FgdSiSGC0nXG/HLksEOPmM4d 5cgrKYeREZ2UM2d0A5n52k6ZBsZakA2pwmiO3MqicNLLWDev3A5aKGhrDetbMA3d1Srh Ht1VxCJHtiZmAmUDkRppIN1l37wQcAPIuqzn4UvIAV+s5IwQaLGA0JYpZR5PNNaqvAJV jzWRRskvMNWfXvdk/cCaymoCHWytYbrqgUPARxlwM4LdEhnOKvwKxfW7dU6TeG0w29rt 9QIQ== X-Gm-Message-State: AHPjjUgxEDAx8HIKtOoTggMW0Xd5XIzulLN7kD+cBeup2Tpsxgjez1Jd gkblmCiBkXYr4HtKzD0C5PdSEjkVOA== X-Google-Smtp-Source: ADKCNb7eUr8ZDRqzMD7+XVpK545v2ViKukwzUhgLjZtWeZ3b6do/pK62seBTwx3v/ZchwuoGIpGxd3zUmpgWhduMJjo= X-Received: by 10.200.54.136 with SMTP id a8mr1268513qtc.307.1504747795498; Wed, 06 Sep 2017 18:29:55 -0700 (PDT) MIME-Version: 1.0 Received: by 10.12.132.100 with HTTP; Wed, 6 Sep 2017 18:29:55 -0700 (PDT) Reply-To: adam@cypherspace.org In-Reply-To: References: From: Adam Back Date: Thu, 7 Sep 2017 02:29:55 +0100 Message-ID: To: CryptAxe , Bitcoin Protocol Discussion Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=0.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] SF proposal: prohibit unspendable outputs with amount=0 X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Sep 2017 01:29:56 -0000 The pattern used by Felix Weiss' BIP for Confidential Transactions depends on or is tidier with 0-value outputs. Adam On 7 September 2017 at 00:54, CryptAxe via bitcoin-dev wrote: > As long as an unspendable outputs (OP_RETURN outputs for example) with > amount=3D0 are still allowed I don't see it being an issue for anything. > > On Sep 5, 2017 2:52 PM, "Jorge Tim=C3=B3n via bitcoin-dev" > wrote: >> >> This is not a priority, not very important either. >> Right now it is possible to create 0-value outputs that are spendable >> and thus stay in the utxo (potentially forever). Requiring at least 1 >> satoshi per output doesn't really do much against a spam attack to the >> utxo, but I think it would be slightly better than the current >> situation. >> >> Is there any reason or use case to keep allowing spendable outputs >> with null amounts in them? >> >> If not, I'm happy to create a BIP with its code, this should be simple. >> _______________________________________________ >> bitcoin-dev mailing list >> bitcoin-dev@lists.linuxfoundation.org >> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev > > > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev >