From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1V1Fwx-0007bR-M9 for bitcoin-development@lists.sourceforge.net; Mon, 22 Jul 2013 13:14:51 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.219.52 as permitted sender) client-ip=209.85.219.52; envelope-from=mh.in.england@gmail.com; helo=mail-oa0-f52.google.com; Received: from mail-oa0-f52.google.com ([209.85.219.52]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1V1Fwu-0007yA-3c for bitcoin-development@lists.sourceforge.net; Mon, 22 Jul 2013 13:14:51 +0000 Received: by mail-oa0-f52.google.com with SMTP id g12so9033148oah.11 for ; Mon, 22 Jul 2013 06:14:42 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.182.230.163 with SMTP id sz3mr20089769obc.81.1374498882495; Mon, 22 Jul 2013 06:14:42 -0700 (PDT) Sender: mh.in.england@gmail.com Received: by 10.76.23.36 with HTTP; Mon, 22 Jul 2013 06:14:42 -0700 (PDT) In-Reply-To: References: Date: Mon, 22 Jul 2013 15:14:42 +0200 X-Google-Sender-Auth: 0EOnOmMkrMO7ZXlqNMj_mPE7mUM Message-ID: From: Mike Hearn To: Jean-Paul Kogelman Content-Type: multipart/alternative; boundary=001a11c2f63aa2ae0904e21975f0 X-Spam-Score: -0.5 (/) 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 1.0 HTML_MESSAGE BODY: HTML included in message 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: 1V1Fwu-0007yA-3c Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet master seed with optional encryption 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: Mon, 22 Jul 2013 13:14:51 -0000 --001a11c2f63aa2ae0904e21975f0 Content-Type: text/plain; charset=UTF-8 This isn't usable for SPV wallets unless it has a birthday in it. Otherwise you either need to scan the entire chain (slow) or find a fully indexed copy of the block chain (expensive, more centralised). Just add a UNIX time as an extra 4 bytes, or if you want to save a few characters then use a uint16 that represents "days since birth of this specification". --001a11c2f63aa2ae0904e21975f0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
This isn't usable for SPV wallets unless it has a birt= hday in it. Otherwise you either need to scan the entire chain (slow) or fi= nd a fully indexed copy of the block chain (expensive, more centralised). J= ust add a UNIX time as an extra 4 bytes, or if you want to save a few chara= cters then use a uint16 that represents "days since birth of this spec= ification".
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