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-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Z1LaX-0001Dq-QH for bitcoin-development@lists.sourceforge.net; Sat, 06 Jun 2015 21:25:09 +0000 X-ACL-Warn: Received: from mail-qg0-f51.google.com ([209.85.192.51]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Z1LaW-0001CK-OE for bitcoin-development@lists.sourceforge.net; Sat, 06 Jun 2015 21:25:09 +0000 Received: by qgg3 with SMTP id 3so15245303qgg.2 for ; Sat, 06 Jun 2015 14:25:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=yRJjXt/2IYw7EbfK/TMaHp8dLtuT37tO8U2YcFrpLJQ=; b=elUZcquc0uiOVltbYOJkKh86TY+Yc6+anXLFicPPNu87WxNXIdnX+Nh+RPPd4JYw+5 dvbSROqfjhdj2Px9FNHfoRKYgGb0ygWjWvmu7BxQ2lRGFvGlmPeFMp385pW335q8k9KK 1P/uylhJdCuJiBr4sgGb9YUI8VeJxL18/FTrf4UTMD1jV4jT05uIvNPR5ETSkWBg6kUO upmIjBxhOlHZSq9poRghac4joJCTj2/1EihZmwgh7WMKkCy/OQxwYHVki5p6brh3FulD CxFOXZq1Jvvxpg9tld4H/KUKnvlzXazK6Vx08BI+EpLu/0/F4JuXyTrCtmDDtcsmI9ht /IgA== X-Gm-Message-State: ALoCoQkHO9r7PslgZXvZfXek+z0/FSenMnvrJgl0n2BVrHJ+EYPlt/JAQK8oPYyyoQWc1Gi/d/wb MIME-Version: 1.0 X-Received: by 10.140.47.71 with SMTP id l65mr11517195qga.5.1433625903286; Sat, 06 Jun 2015 14:25:03 -0700 (PDT) Received: by 10.96.145.9 with HTTP; Sat, 6 Jun 2015 14:25:02 -0700 (PDT) In-Reply-To: References: Date: Sat, 6 Jun 2015 23:25:02 +0200 Message-ID: From: Kalle Rosenbaum To: Bitcoin Dev Content-Type: text/plain; charset=UTF-8 X-Spam-Score: 0.2 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.2 AWL AWL: Adjusted score from AWL reputation of From: address X-Headers-End: 1Z1LaW-0001CK-OE Subject: Re: [Bitcoin-development] BIP for Proof of Payment 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: Sat, 06 Jun 2015 21:25:09 -0000 Thank you all for the feedback. I will change the data structure as follows: * There will be only one output, the "pop output", and no outputs from T will be copied to the PoP. * The pop output will have value 0. * The sequence number of all inputs of the PoP will be set to 0. I chose to set it to 0 for all inputs for simplicity. * The lock_time of the PoP is always set to 499999999. Any comments on this? /Kalle 2015-06-06 19:00 GMT+02:00 Kalle Rosenbaum : > 2015-06-06 18:10 GMT+02:00 Tom Harding : >> On Jun 6, 2015 8:05 AM, "Kalle Rosenbaum" wrote: >> >>> I'm open to changes here. >> >> I suggest: >> >> - Don't include any real outputs. They are redundant because the txid is >> already referenced. > > with the nLocktime solution, the copied outputs are not needed. > >> >> - Start the proof script, which should be invalid, with a magic constant and >> include space for future expansion. This makes PoP's easy to identify and >> extend. > > I did remore the constant (a "PoP" literal ascii encoded string) > because it didn't add much. The recipient will expect a pop, so it > will simply treat it as one. I did add a 2 byte version field to make > it extendable. > >> >> - "Proof of Potential" > > Noted :-) > > Thank you > /Kalle