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-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1YlkBn-00035K-W7 for bitcoin-development@lists.sourceforge.net; Fri, 24 Apr 2015 20:27:08 +0000 Received: from mail-ie0-f169.google.com ([209.85.223.169]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1YlkBm-0005XP-H6 for bitcoin-development@lists.sourceforge.net; Fri, 24 Apr 2015 20:27:07 +0000 Received: by iecrt8 with SMTP id rt8so91895822iec.0 for ; Fri, 24 Apr 2015 13:27:01 -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:date:message-id:subject:from:to :content-type; bh=zdsnHSkLob3T//kGXO7kh53yGRWDOgzI4gLLXqnS9vs=; b=bpL4iP+pcP5wd5lDm6ReD0jyQMf9rreKpJiEoQo20h/eye52pzJpnC1h1FBwgfR59M O1wViBB36Z/qbYpUyBcytrdQlwucPJotJ5R8fZftDgYnThEx7L5JLBSP9ZHIGGo4YOKF ltJXcURU5iE6FI9ARFrHltmXJEV6zO821x5J2mzQFV/1BdR4pYRuZU1z3e2nRv1kGVnN dhRRk6do6L7I/BPe1mgRsmDAfaXfu3gBHGoO/mcniiAqE1GOiKltR2RGRsO1SKpa08om H8UsFUHZsScekphZI6ix6AAIfJDCBCAgm7OcXTODZRk4pi8k92boa/TfOJL4jnL8312L hDJw== X-Gm-Message-State: ALoCoQkbW4L8UqDQle7yPWjSznR4Pl+drcKtkaWO88WcjTsO4X7U4rNT4fGN38dYFqtcq1fJFoIx MIME-Version: 1.0 X-Received: by 10.50.126.105 with SMTP id mx9mr893911igb.21.1429905646627; Fri, 24 Apr 2015 13:00:46 -0700 (PDT) Received: by 10.36.205.135 with HTTP; Fri, 24 Apr 2015 13:00:46 -0700 (PDT) Date: Fri, 24 Apr 2015 22:00:46 +0200 Message-ID: From: Justus Ranvier To: Bitcoin Dev Content-Type: multipart/alternative; boundary=047d7b4145d42148e805147dda99 X-Spam-Score: 1.0 (+) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 1.0 HTML_MESSAGE BODY: HTML included in message X-Headers-End: 1YlkBm-0005XP-H6 Subject: [Bitcoin-development] Reusable payment codes 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: Fri, 24 Apr 2015 20:27:08 -0000 --047d7b4145d42148e805147dda99 Content-Type: text/plain; charset=UTF-8 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 https://github.com/justusranvier/rfc/blob/payment_code/bips/bip-pc01.mediawiki This link contains an RFC for a new type of Bitcoin address called a "payment code" Payment codes are SPV-friendly alternatives to DarkWallet-style stealth addresses which provide useful features such as positively identifying senders to recipients and automatically providing for transaction refunds. Payment codes can be publicly advertised and associated with a real-life identity without causing a loss of financial privacy. Compared to stealth addresses, payment codes require less blockchain data storage. Payment codes require 65 bytes of OP_RETURN data per sender-recipient pair, while stealth addresses require 40 bytes per transaction. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVOqCRAAoJECpf2nDq2eYjluEP/RVJk+miDIihY4ilIvUbKvMd JLLqHr7Q1dlZyMIG/UqVWdoP5hzg/16B+q2iAB9jXozPnrDp0mggBh6rIGroevAa Kqfrs+Rrog1w9auhd67LWORDqav6YIrjTJIxdLxe11IEiq5rWbHPNUEDMzdEmHbz QfTH7KWAP2BasO5ETXcfu6BcccrXZ3XOKLON2h3NGD/cEDizY+uT2k3QN54z+KxG NB9scKbzVvsJwkyBrgbV+As9H3k6PnFsojYgAaE9gkp7D2+ahjzUiOH5rv6TbbYR o2X5MOiTY2/YZEqZPG7IR03ZAgeLVCvXXysjPOfzUKbmTF4w849sm8BuhixzDXHo 2V/HHKoGclIohcODBCWi0tVQXshZt4QkCNJBW5o3nL6Nn2YOp6hmw8YKAHnw3E7h /wIgk5f+NOLl/iIxoAxAdavEj5P6N4ic+OB6MAjnhEilWfBvCIpqWLGNvrtOhEa9 EnPHcgb4ILBu4OionJhsNpJ/O95C0OEypMm25MIS+rQcV4Uxe5IOS2OuT/GreLET n/7Y0mJbqYbLBjVsfS+DNjvsgyJl5AxhcMrdVyXJjSYVcCoRhcoX5Ceidd+YkbHI OMs5f63tM1Rgi/WY4Ct80SD5EbULZuu8j1KJ9HPGuMt081JSBH+L5isiKuazPeO+ SGApMBd4Q89fKzL2djae =Dypr -----END PGP SIGNATURE----- --047d7b4145d42148e805147dda99 Content-Type: text/html; charset=UTF-8

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Hash: SHA1


https://github.com/justusranvier/rfc/blob/payment_code/bips/bip-pc01.mediawiki


This link contains an RFC for a new type of Bitcoin address called a "payment code"


Payment codes are SPV-friendly alternatives to DarkWallet-style stealth addresses which provide useful features such as positively identifying senders to recipients and automatically providing for transaction refunds.


Payment codes can be publicly advertised and associated with a real-life identity without causing a loss of financial privacy.


Compared to stealth addresses, payment codes require less blockchain data storage.


Payment codes require 65 bytes of OP_RETURN data per sender-recipient pair, while stealth addresses require 40 bytes per transaction.


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