Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1SgDEO-0002Ge-8L for bitcoin-development@lists.sourceforge.net; Sun, 17 Jun 2012 11:01:20 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 74.125.82.53 as permitted sender) client-ip=74.125.82.53; envelope-from=mh.in.england@gmail.com; helo=mail-wg0-f53.google.com; Received: from mail-wg0-f53.google.com ([74.125.82.53]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1SgDEN-0004IX-Fi for bitcoin-development@lists.sourceforge.net; Sun, 17 Jun 2012 11:01:20 +0000 Received: by wgbfm10 with SMTP id fm10so3874116wgb.10 for ; Sun, 17 Jun 2012 04:01:13 -0700 (PDT) MIME-Version: 1.0 Received: by 10.216.143.213 with SMTP id l63mr6547833wej.117.1339930872604; Sun, 17 Jun 2012 04:01:12 -0700 (PDT) Sender: mh.in.england@gmail.com Received: by 10.216.254.232 with HTTP; Sun, 17 Jun 2012 04:01:12 -0700 (PDT) In-Reply-To: <20120616192651.GA13438@vps7135.xlshosting.net> References: <20120616192651.GA13438@vps7135.xlshosting.net> Date: Sun, 17 Jun 2012 13:01:12 +0200 X-Google-Sender-Auth: 49X9qmJb5fPUtd77rfnmh-zAdf4 Message-ID: From: Mike Hearn To: Pieter Wuille Content-Type: text/plain; charset=UTF-8 X-Spam-Score: -1.5 (-) 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 (mh.in.england[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 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: 1SgDEN-0004IX-Fi Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] After compressed pubkeys: hybrid pubkeys 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: Sun, 17 Jun 2012 11:01:20 -0000 > * 0x04 [32-byte X coord] [32-byte Y coord]: uncompressed format > * 0x06 [32-byte X coord] [32-byte Y coord]: hybrid format for even Y coords > * 0x07 [32-byte X coord] [32-byte Y coord]: hybrid format for odd Y coords So what's the actual difference in format? Is there any at all, or it's just the first number that's different?